Grizzly G4791 Owner's manual

Brand: Grizzly

Model: G4791

Category: Lathes

Type: Owner's manual

MODEL G4791

12" x 39" LARGE

COMBO LATHE/MILL

OWNER'S MANUAL

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WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

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This manual provides critical safety instructions on the proper setup,

operation, maintenance, and service of this machine/tool. Save this

document, refer to it often, and use it to instruct other operators.

Failure to read, understand and follow the instructions in this manual

may result in fire or serious personal injury—including amputation,

electrocution, or death.

The owner of this machine/tool is solely responsible for its safe use.

This responsibility includes but is not limited to proper installation in

a safe environment, personnel training and usage authorization,

proper inspection and maintenance, manual availability and compre-

hension, application of safety devices, cutting/sanding/grinding tool

integrity, and the usage of personal protective equipment.

The manufacturer will not be held liable for injury or property damage

from negligence, improper training, machine modifications or misuse.

3OMEDUSTCREATEDBYPOWERSANDINGSAWINGGRINDINGDRILLINGAND

OTHERCONSTRUCTIONACTIVITIESCONTAINSCHEMICALSKNOWNTOTHE3TATE

OF#ALIFORNIATOCAUSECANCERBIRTHDEFECTSOROTHERREPRODUCTIVE

HARM3OMEEXAMPLESOFTHESECHEMICALSARE

s ,EADFROMLEADBASEDPAINTS

s #RYSTALLINESILICAFROMBRICKSCEMENTANDOTHERMASONRYPRODUCTS

s !RSENICANDCHROMIUMFROMCHEMICALLYTREATEDLUMBER

9OURRISKFROMTHESEEXPOSURESVARIESDEPENDINGONHOWOFTENYOU

DOTHISTYPEOFWORK4OREDUCEYOUREXPOSURETOTHESECHEMICALS

7ORKINAWELLVENTILATEDAREAANDWORKWITHAPPROVEDSAFETYEQUIP

MENTSUCHASTHOSEDUSTMASKSTHATARESPECIALLYDESIGNEDTOFILTER

OUTMICROSCOPICPARTICLES

Table of Contents

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SECTION 6: ACCESSORIES ......................... 50

SECTION 7: MAINTENANCE ......................... 53

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8aZVc^c\EgdiZXi^c\################################## *(

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AVi]ZK"7ZaiIZch^dc^c\############################## +%

SECTION 8: SERVICE ................................... 61

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6Y_jhi^c\<^Wh############################################## +)

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SECTION 9: WIRING ...................................... 70

:aZXig^XVaHV[Zin>chigjXi^dch######################## ,%

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SECTION 10: PARTS ..................................... 74

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WARRANTY AND RETURNS ........................ 93

INTRODUCTION ............................................... 2

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SECTION 1: SAFETY ....................................... 7

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SECTION 2: CIRCUIT REQUIREMENTS ...... 11

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SECTION 3: SETUP ....................................... 12

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SECTION 4: MILL OPERATIONS .................. 20

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SECTION 5: LATHE OPERATIONS .............. 27

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INTRODUCTION

Foreword

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Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901

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Weight............................................................................................................................................................ 1110 lbs.

Width (side-to-side) x Depth (front-to-back) x Height........................................................................... 69 x 25 x 69 in.

Footprint (Length x Width)..................................................................................................................... 56 x 19-1/2 in.

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Type................................................................................................................................................ Wood Crate

Content................................................................................................................................................. Machine

Weight.................................................................................................................................................. 1208 lbs.

Length x Width x Height............................................................................................................. 73 x 33 x 43 in.

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Type................................................................................................................................................... Cardboard

Content............................................................................................................................................... Left Stand

Weight...................................................................................................................................................... 95 lbs.

Length x Width x Height............................................................................................................. 21 x 15 x 29 in.

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Type................................................................................................................................................... Cardboard

Content............................................................................................................................................ Right Stand

Weight...................................................................................................................................................... 88 lbs.

Length x Width x Height............................................................................................................. 21 x 15 x 29 in.

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Minimum Circuit Size........................................................................................................................................ 15 amp

Switch..................................................................................................................................... Push Button, Reversing

Switch Voltage..................................................................................................................................................... 220V

Cord Length............................................................................................................................................................ 6 ft.

Cord Gauge................................................................................................................................................... 14 gauge

Plug Included........................................................................................................................................................... No

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Type.................................................................................................................. TEFC Capacitor Start Induction

Horsepower............................................................................................................................................. 3/4 HP

Voltage....................................................................................................................................................... 220V

Prewired..................................................................................................................................................... 220V

Phase....................................................................................................................................................... Single

Amps........................................................................................................................................................... 5.5A

Speed................................................................................................................................................ 1720 RPM

Cycle......................................................................................................................................................... 60 Hz

Number of Speeds............................................................................................................................................ 1

Power Transfer ................................................................................................................................... Gear/Belt

Bearings.................................................................................................................................................. Sealed

Machine Data Sheet

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Type.................................................................................................................. TEFC Capacitor Start Induction

Horsepower.......................................................................................................................................... 1-1/2 HP

Voltage....................................................................................................................................................... 220V

Prewired..................................................................................................................................................... 220V

Phase....................................................................................................................................................... Single

Amps........................................................................................................................................................... 7.5A

Speed................................................................................................................................................ 1720 RPM

Cycle......................................................................................................................................................... 60 Hz

Number of Speeds............................................................................................................................................ 1

Power Transfer ................................................................................................................................... Gear/Belt

Bearings.................................................................................................................................................. Sealed

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Chuck Type.................................................................................................... 3-Jaw Scroll, 4-Jaw Independent

Chuck Size................................................................................................................................................... 6 in.

Faceplate Size............................................................................................................................................. 8 in.

Tailstock Taper.......................................................................................................................................... MT#3

Tailstock Travel............................................................................................................................................ 3 in.

Tailstock Offset..................................................................................................................................... 15/32 in.

Cross Slide Travel....................................................................................................................................... 9 in.

Carriage Travel.......................................................................................................................................... 35 in.

Compound Travel........................................................................................................................................ 3 in.

No. Of Spindle Speeds..................................................................................................................................... 9

Spindle Speed Range.................................................... 250, 315, 400, 500, 630, 800, 1000, 1250, 1600 RPM

No. Of Longitudinal Feeds.............................................................................................................................. 36

Feed Rate............................................................................................................................. 0.0047 - 0.0095 in.

No. Of Inch Threads....................................................................................................................................... 20

Thread Range Inch........................................................................................................................... 11 - 40 TPI

No. Of Metric Threads.................................................................................................................................... 14

Thread Range Metric...................................................................................................................... 0.5 - 3.0 mm

No. Of Change Gears..................................................................................................................................... 14

Swing Over Bed......................................................................................................................................... 12 in.

Swing Over Saddle................................................................................................................................ 6-7/8 in.

Dist. Between Centers............................................................................................................................... 39 in.

Spindle Bore.......................................................................................................................................... 1-1/2 in.

Lathe Spindle Taper.................................................................................................................................. MT#5

B^aa>c[d

Drill Press Taper........................................................................................................................................ MT#3

Mill Drill Spindle Travel................................................................................................................................ 5 in.

Mill Drill Swing........................................................................................................................................... 21 in.

Dist. Spindle To Work Table................................................................................................................ 14-1/4 in.

Dist. Spindle To Bed............................................................................................................................ 16-1/2 in.

Dist. Spindle To Center Line.................................................................................................................. 8-1/2 in.

Mill Head Vertical Travel........................................................................................................................ 4-7/8 in.

Max Tool Bit Size...................................................................................................................................... 1/2 in.

Drilling Cap For Steel................................................................................................................................ 5/8 in.

Drilling Cap For Cast Iron......................................................................................................................... 5/8 in.

Table Size Length................................................................................................................................ 16-7/8 in.

Table Size Width................................................................................................................................... 7-7/8 in.

Table Size Thickness............................................................................................................................ 1-1/4 in.

Draw Bar Diameter.................................................................................................................................. 12 mm

Draw Bar Length.................................................................................................................................. 13-3/4 in.

Draw Bar TPI.................................................................................................................................... M12 X 1.75

No. Of Mill Drill Speeds.................................................................................................................................... 9

Mill Drill Speed Range................................................. 350, 400, 550, 630, 800, 1000, 1350, 1600, 2000 RPM

"+"

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Bed.................................................................................................................. Hardened and Ground Cast Iron

Headstock............................................................................................................................................ Cast Iron

Body..................................................................................................................................................... Cast Iron

Frame................................................................................................................................................... Cast Iron

Headstock Gears........................................................................................................................................ Steel

Stand.................................................................................................................................................... Cast Iron

Paint......................................................................................................................................................... Epoxy

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Bed Width.............................................................................................................................................. 6-1/8 in.

Floor To Center Height.............................................................................................................................. 43 in.

Lead Screw Diameter........................................................................................................................... 0.950 in.

Lead Screw TPI................................................................................................................................................ 8

Lead Screw Length.................................................................................................................................... 46 in.

Cross Slide Screw Diameter..................................................................................................................... 5/8 in.

Cross Slide Screw TPI.................................................................................................................................... 10

Cross Slide Screw Length......................................................................................................................... 16 in.

Coolant System.............................................................................................................................................. No

Stand............................................................................................................................................................ Yes

Di]ZgHeZX^[^XVi^dch/

Country Of Origin ............................................................................................................................................... China

Warranty ........................................................................................................................................................... 1 Year

Serial Number Location ........................................................................................................................ On Headstock

Customer Assembly & Setup Time .................................................................................................................... 1 hour

;ZVijgZh/

Heavy-Duty Stand with 2 Storage Compartments Included

Hardened and Ground Bedways

T-Slots in Cross Slide

6XXZhhdg^Zh>cXajYZY/

1/2" Drill Chuck with Arbor

2 Dead Centers

4-Way Tool Post

6" 3-Jaw Chuck

8" 4-Jaw Chuck

8" Face Plate

Follow Rest

Steady Rest

Threading Dial

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Safety Instructions for Machinery

For Your Own Safety, Read Instruction

Manual Before Operating this Machine

The purpose of safety symbols is to attract your attention to possible hazardous conditions.

This manual uses a series of symbols and signal words intended to convey the level of impor-

tance of the safety messages. The progression of symbols is described below. Remember that

safety messages by themselves do not eliminate danger and are not a substitute for proper

accident prevention measures.

WEARING PROPER APPAREL. 9d cdi lZVg

Xadi]^c\! VeeVgZa! dg _ZlZagn i]Vi XVc WZXdbZ

ZciVc\aZY ^c bdk^c\ eVgih# 6alVnh i^Z WVX` dg

XdkZgadc\]V^g# LZVgcdc"ha^e[ddilZVg idVkd^Y

VXX^YZciVaha^ehl]^X]XdjaYXVjhZVadhhd[ldg`"

e^ZXZXdcigda#

HEARING PROTECTION. 6alVnh lZVg ]ZVg"

^c\egdiZXi^dcl]ZcdeZgVi^c\dgdWhZgk^^c\ adjY

bVX]^cZgn# :miZcYZY ZmedhjgZ id i]^h cd^hZ

l^i]dji]ZVg^c\ egdiZXi^dc XVc XVjhZeZgbVcZci

]ZVg^c\adhh#

MENTAL ALERTNESS. 7Z bZciVaan VaZgi l]Zc

gjcc^c\ bVX]^cZgn# CZkZg deZgViZ jcYZg i]Z

^c[ajZcXZd[Ygj\hdgVaXd]da!l]Zci^gZY!dgl]Zc

Y^higVXiZY#

OWNER’S MANUAL. GZVY VcY jcYZghiVcY

i]^h dlcZg»h bVcjVa 7:;DG: jh^c\ bVX]^cZ#

JcigV^cZYjhZghXVcWZhZg^djhan]jgi#

EYE PROTECTION.6alVnhlZVg6CH>"VeegdkZY

hV[Zin\aVhhZhdgV[VXZh]^ZaYl]ZcdeZgVi^c\dg

dWhZgk^c\ bVX]^cZgn id gZYjXZ i]Z g^h` d[ ZnZ

^c_jgndgWa^cYcZhh[gdb[an^c\eVgi^XaZh#:kZgnYVn

ZnZ\aVhhZhVgZcdiVeegdkZYhV[Zin\aVhhZh#

HAZARDOUS DUST. 9jhi XgZViZY l]^aZ jh^c\

bVX]^cZgn bVn XVjhZ XVcXZg! W^gi] YZ[ZXih! dg

adc\"iZgb gZhe^gVidgn YVbV\Z# 7Z VlVgZ d[ Yjhi

]VoVgYhVhhdX^ViZYl^i]ZVX]ldg`e^ZXZbViZg^Va!

VcYValVnhlZVgVC>DH="VeegdkZYgZhe^gVidgid

gZYjXZndjgg^h`#

Indicates a potentially hazardous situation which, if not avoided,

MAY result in minor or moderate injury. It may also be used to alert

against unsafe practices.

Indicates a potentially hazardous situation which, if not avoided,

COULD result in death or serious injury.

Indicates an imminently hazardous situation which, if not avoided,

WILL result in death or serious injury.

This symbol is used to alert the user to useful information about

proper operation of the machine.

NOTICE

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For Your Own Safety, Read Instruction

Manual Before Operating this Machine

The purpose of safety symbols is to attract your attention to possible hazardous conditions.

This manual uses a series of symbols and signal words intended to convey the level of impor-

tance of the safety messages. The progression of symbols is described below. Remember that

safety messages by themselves do not eliminate danger and are not a substitute for proper

accident prevention measures.

WEARING PROPER APPAREL. 9d cdi lZVg

Xadi]^c\! VeeVgZa! dg _ZlZagn i]Vi XVc WZXdbZ

ZciVc\aZY ^c bdk^c\ eVgih# 6alVnh i^Z WVX` dg

XdkZgadc\]V^g# LZVgcdc"ha^e[ddilZVg idVkd^Y

VXX^YZciVaha^ehl]^X]XdjaYXVjhZVadhhd[ldg`"

e^ZXZXdcigda#

HEARING PROTECTION. 6alVnh lZVg ]ZVg"

^c\egdiZXi^dcl]ZcdeZgVi^c\dgdWhZgk^^c\ adjY

bVX]^cZgn# :miZcYZY ZmedhjgZ id i]^h cd^hZ

l^i]dji]ZVg^c\ egdiZXi^dc XVc XVjhZeZgbVcZci

]ZVg^c\adhh#

MENTAL ALERTNESS. 7Z bZciVaan VaZgi l]Zc

gjcc^c\ bVX]^cZgn# CZkZg deZgViZ jcYZg i]Z

^c[ajZcXZd[Ygj\hdgVaXd]da!l]Zci^gZY!dgl]Zc

Y^higVXiZY#

OWNER’S MANUAL. GZVY VcY jcYZghiVcY

i]^h dlcZg»h bVcjVa 7:;DG: jh^c\ bVX]^cZ#

JcigV^cZYjhZghXVcWZhZg^djhan]jgi#

EYE PROTECTION.6alVnhlZVg6CH>"VeegdkZY

hV[Zin\aVhhZhdgV[VXZh]^ZaYl]ZcdeZgVi^c\dg

dWhZgk^c\ bVX]^cZgn id gZYjXZ i]Z g^h` d[ ZnZ

^c_jgndgWa^cYcZhh[gdb[an^c\eVgi^XaZh#:kZgnYVn

ZnZ\aVhhZhVgZcdiVeegdkZYhV[Zin\aVhhZh#

HAZARDOUS DUST. 9jhi XgZViZY l]^aZ jh^c\

bVX]^cZgn bVn XVjhZ XVcXZg! W^gi] YZ[ZXih! dg

adc\"iZgb gZhe^gVidgn YVbV\Z# 7Z VlVgZ d[ Yjhi

]VoVgYhVhhdX^ViZYl^i]ZVX]ldg`e^ZXZbViZg^Va!

VcYValVnhlZVgVC>DH="VeegdkZYgZhe^gVidgid

gZYjXZndjgg^h`#

Indicates a potentially hazardous situation which, if not avoided,

MAY result in minor or moderate injury. It may also be used to alert

against unsafe practices.

Indicates a potentially hazardous situation which, if not avoided,

COULD result in death or serious injury.

Indicates an imminently hazardous situation which, if not avoided,

WILL result in death or serious injury.

This symbol is used to alert the user to useful information about

proper operation of the machine.

NOTICE

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Additional Safety Instructions For Mills

1. UNDERSTANDING CONTROLS. BV`Z

hjgZndjjcYZghiVcYi]ZjhZVcYdeZgVi^dc

d[VaaXdcigdah#

2. SAFETY ACCESSORIES. 6alVnh jhZ V

X]^e\jVgY^cVYY^i^dcidndjghV[Zin\aVhhZh

dgjhZV[VXZh]^ZaYl]Zcb^aa^c\idgZYjXZ

i]Zg^h`d[^c_jgn[gdb[an^c\X]^eh#

3. WORK HOLDING. 7Z[dgZ hiVgi^c\ i]Z

bVX]^cZ!WZXZgiV^ci]Zldg`e^ZXZ]VhWZZc

egdeZganXaVbeZYidi]ZiVWaZ#C:K:G]daY

i]Zldg`e^ZXZWn]VcYYjg^c\deZgVi^dc#

4. CHUCK KEY SAFETY. 6alVnh gZbdkZ

X]jX``Zn!YgVlWVglgZcX]!VcYVcnhZgk^XZ

iddah^bbZY^ViZanV[iZgjhZ#

5. SPINDLE SPEEDS. HZaZXi i]Z he^cYaZ

heZZY i]Vi ^h Veegdeg^ViZ [dg i]Z ineZ d[

ldg`VcYbViZg^Va#6aadli]Zb^aaid\V^c[jaa

heZZYWZ[dgZWZ\^cc^c\VXji#

6. POWER DISRUPTION. >c i]Z ZkZci d[ V

adXVa edlZg djiV\Z Yjg^c\ deZgVi^dc! ijgc

OFF Vaa hl^iX]Zh id Vkd^Yedhh^WaZ hjYYZc

bVX]^cZhiVgijedcXZedlZg^hgZhidgZY#

7. STOPPING SPINDLE. 9D CDI hide i]Z

he^cYaZ jh^c\ ndjg ]VcY# 6aadl i]Z he^cYaZ

idhidedc^ihdlc#

8. CLEAN-UP. 9D CDI XaZVg X]^eh Wn ]VcY

dgXdbegZhhZYV^g#JhZVWgjh]dgkVXjjb!

VcY cZkZg XaZVg X]^eh l]^aZ i]Z he^cYaZ ^h

ijgc^c\#

9. BE ATTENTIVE. 9D CDI aZVkZ b^aa gjc"

c^c\jcViiZcYZY[dgVcngZVhdc#

10. MACHINE CARE AND MAINTENANCE.

CZkZg deZgViZ i]Z b^aa l^i] YVbV\ZY dg

ldgc eVgih# BV^ciV^c ndjg b^aa ^c egdeZg

ldg`^c\ XdcY^i^dc# EZg[dgb gdji^cZ ^cheZX"

i^dchVcY bV^ciZcVcXZ egdbeian# Eji VlVn

VY_jhibZciiddahV[iZgjhZ#

11. DISCONNECT POWER.BV`ZhjgZi]Zb^aa

^hijgcZYOFF!Y^hXdccZXiZY[gdb^ihedlZg

hdjgXZVcYVaabdk^c\eVgih]VkZXdbZidV

XdbeaZiZhideWZ[dgZX]Vc\^c\Xjii^c\iddah!

hiVgi^c\Vcn^cheZXi^dc!VY_jhibZci!dgbV^c"

iZcVcXZegdXZYjgZ#

12. AVOIDING ENTANGLEMENT# 9D CDI

lZVgaddhZXadi]^c\!\adkZh!dg_ZlZagnl]Zc

deZgVi^c\b^aa#I^ZWVX`adc\]V^gVcYgdaaje

haZZkZh#

13. TOOL HOLDING. 6alVnh jhZ i]Z egdeZg

Xjii^c\ iddah [dg ndjg deZgVi^dc#BV`Z hjgZ

iddahVgZ]ZaY[^gban^ceaVXZ#

14. CUTTING TOOL INSPECTION. >cheZXi

Yg^aah VcY ZcY b^aah [dg h]VgecZhh! X]^eh!

dg XgVX`h WZ[dgZ ZVX] jhZ# GZeaVXZ Yjaa!

X]^eeZY! dg XgVX`ZY Xjii^c\ iddah ^bbZY^"

ViZan# =VcYaZ cZl Xjii^c\ iddah l^i] XVgZ#

AZVY^c\ ZY\Zh VgZ kZgn h]Vge VcY XVc

XVjhZaVXZgVi^dch#

15. SPINDLE DIRECTION CHANGES. CZkZg

gZkZghZhe^cYaZY^gZXi^dcl]^aZi]Zhe^cYaZ^h

^cbdi^dc#

16. EXPERIENCING DIFFICULTIES. >[ Vi Vcn

i^bZ ndj VgZ ZmeZg^ZcX^c\ Y^[[^Xjai^Zh eZg"

[dgb^c\i]Z^ciZcYZYdeZgVi^dc!hidejh^c\

i]ZbVX]^cZ8dciVXidjgIZX]c^XVaHjeedgi

Vi*,%*)+".++(#

Like all machinery there is potential danger when operating this machine. Accidents are frequent-

ly caused by lack of familiarity or failure to pay attention. Use this mill with respect and caution to

reduce the risk of operator injury. If normal safety precautions are overlooked or ignored, serious

personal injury may occur.

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Additional Safety Instructions for Lathes

No list of safety guidelines can be complete. Every shop environment is different. Always con-

sider safety first, as it applies to your individual working conditions. Use this and other machin-

ery with caution and respect. Failure to do so could result in serious personal injury, damage to

equipment, or poor work results.

1. UNDERSTANDING CONTROLS. BV`Z

hjgZndjjcYZghiVcYi]ZjhZVcYdeZgVi^dc

d[VaaXdcigdah#

2. CLEANING MACHINE: Id Vkd^Y aVXZgV"

i^dch! Yd cdi XaZVg X]^eh Wn ]VcY dg l^i]

XdbegZhhZY V^g# JhZ V Wgjh]! VcY cZkZg

XaZVgX]^ehl]^aZi]ZaVi]Z^hdeZgVi^c\#

3. USING CORRECT TOOLING: 6alVnhhZaZXi

i]Z g^\]i XjiiZg [dg i]Z _dW! VcY bV`Z hjgZ

XjiiZghVgZh]Vge# I]Zg^\]i iddaYZXgZVhZh

higV^cdci]ZaVi]ZXdbedcZcihVcYgZYjXZh

i]Zg^h`d[jchV[ZXjii^c\#

4. ELIMINATING A PROJECTILE HAZARD:

6alVnh gZbdkZ i]Z X]jX` `Zn V[iZg jhZ!

VcYcZkZglVa`VlVn[gdbi]ZaVi]Zl^i]i]Z

X]jX``Zn^chiVaaZY#

5. SECURING A WORKPIECE: BV`Z hjgZ

i]Zldg`e^ZXZ^hegdeZgan]ZaY^ci]ZX]jX`

WZ[dgZhiVgi^c\i]ZaVi]Z#6ldg`e^ZXZi]gdlc

[gdbi]ZX]jX`XdjaYXVjhZhZkZgZ^c_jgn#

6. AVOIDING OVERLOADS: 6alVnh jhZ i]Z

Veegdeg^ViZ[ZZYVcYheZZYgViZh#

7. AVOIDING ENTANGLEMENT INJURIES:

CZkZg ViiZbei id hadl dg hide i]Z aVi]Z

X]jX` dg [VXZeaViZ Wn ]VcY0 VcY i^Z WVX`

adc\ ]V^g! edcniV^ah! addhZ Xadi]^c\! VcY

haZZkZhhdi]ZnYdcdiYVc\aZ#

8# PREVENTING A CUTTING TOOL/CHUCK

CRASH:6alVnhY^hZc\V\Zi]ZedlZg[ZZY

VcY]Va["cjiV[iZgXdbeaZi^c\V_dW#

9. AVOIDING STARTUP INJURIES: BV`Z

hjgZ i]Z ldg`e^ZXZ! Xjii^c\ idda! VcY idda

edhi]VkZVYZfjViZXaZVgVcXZWZ[dgZhiVgi"

^c\ i]Z aVi]Z# BV`Z hjgZ i]Z he^cYaZ GEB

^h hZi XdggZXian [dg i]Z ldg`e^ZXZ Y^VbZiZg

WZ[dgZhiVgi^c\i]ZaVi]Z#AVg\ZeVgihXVcWZ

Z_ZXiZY[gdbi]ZX]jX`^[i]ZX]jX`heZZY^h

hZiidd]^\]#

10. CHUCK SAFETY: 8]jX`h VgZ hjgeg^h^c\an

]ZVkn VcY Vl`lVgY id ]daY! hd egdiZXi

ndjg ]VcYh VcY i]Z WZYlVnh# 6alVnh jhZ

VX]jX`XgVYaZdge^ZXZd[eanlddYdkZgi]Z

WZYlVnh#

11. WORKPIECE SUPPORT: Hjeedgi V adc\

ldg`e^ZXZ ^[ ^i ZmiZcYh djiWdVgY [gdb i]Z

]ZVYhidX` hd ^i l^aa cdi ldWWaZ k^daZcian

l]Zci]ZaVi]Z^hijgcZYON#>[i]Zldg`e^ZXZ

ZmiZcYh bdgZ i]Vc '#* i^bZh ^ih Y^VbZiZg

[gdb i]Z X]jX`! hjeedgi ^i Wn V XZciZg dg

hiZVYngZhi!dg^ibVnYZ[aZXiVcY[Vaadjid[

i]ZX]jX`l]^aZXjii^c\#

12. MAINTAINING A SAFE WORKPLACE:

CZkZgaZVkZaVi]ZjcViiZcYZYl]^aZ^i^hgjc"

c^c\#

<),.&&'m(.AVg\Z8dbWdAVi]Z$B^aa

"&&"

220V Operation

Full Load Amperage Draw

I]^h bVX]^cZ YgVlh i]Z [daadl^c\ Vbeh jcYZg

bVm^bjbadVY/

B^aaBdidg6be9gVl############################*#*6beh

AVi]ZBdidg6be9gVl######################## ,#*6beh

Power Supply Circuit Requirements

NdjBJHIXdccZXindjgbVX]^cZidV\gdjcYZY

X^gXj^ii]Vi^hgViZY[dgi]ZVbeZgV\Z\^kZcWZadl#

CZkZggZeaVXZVX^gXj^iWgZV`ZgdcVcZm^hi^c\X^g"

Xj^il^i]dcZd[]^\]ZgVbeZgV\Zl^i]djiXdchjai"

^c\ V fjVa^ÃZY ZaZXig^X^Vc id ZchjgZ Xdbea^VcXZ

l^i]l^g^c\ XdYZh#If you are unsure about the

wiring codes in your area or you plan to con-

nect your machine to a shared circuit, consult

a qualified electrician.

B^c^bjb8^gXj^iH^oZ############################# &*6beh

Extension Cords

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 JhZ Vi aZVhi V &) \Vj\Z XdgY i]ViYdZh cdi

ZmXZZY*%[ZZi^caZc\i]

 I]ZZmiZch^dcXdgYbjhiVahd]VkZV\gdjcY

l^gZVcYeaj\e^c#

 6fjVa^[^ZYZaZXig^X^VcBJHIh^oZXdgYhdkZg

*%[ZZiadc\idegZkZcibdidgYVbV\Z#

<gdjcY^c\Egdc\

8jggZci8Vggn^c\Egdc\h

6-15 PLUG

GROUNDED

6-15 RECEPTACLE

SECTION 2: CIRCUIT REQUIREMENTS

Serious personal injury could occur if you

connect the machine to power before com-

pleting the setup process. DO NOT connect

the machine to the power until instructed

later in this manual.

Electrocution or fire could

result if machine is not

grounded and installed in

compliance with electrical

codes. Compliance MUST

be verified by a qualified

electrician!

Power Connection Device

I]ZineZd[eaj\gZfj^gZYidXdccZXindjgbVX]^cZ

idedlZgYZeZcYhdci]ZineZd[hZgk^XZndjXjg"

gZcian ]VkZ dg eaVc id ^chiVaa# LZ gZXdbbZcY

jh^c\i]Zeaj\h]dlc^cFigure 2#

Figure 2.C:B6+"&*eaj\VcYgZXZeiVXaZ#

"&'"

<),.&&'m(.AVg\Z8dbWdAVi]Z$B^aa

Wear safety glasses dur-

ing the entire setup pro-

cess!

This machine presents

serious injury hazards

to untrained users. Read

through this entire manu-

al to become familiar with

the controls and opera-

tions before starting the

machine!

Setup Safety

SECTION 3: SETUP

I]Z [daadl^c\ ^iZbh VgZ cZZYZY idXdbeaZiZi]Z

hZijeegdXZhh!WjiVgZcdi^cXajYZYl^i]ndjg

bVX]^cZ/

Description Qty

 6hh^hiVci##################################################### &

 HV[Zin<aVhhZh##################################&:VX]

 BVX]^c^hihEgZX^h^dcAZkZa######################## &

 LgZcX]')bb############################################ &

s E]^aa^ehHXgZlYg^kZg'############################### &

 AjWg^XVcigZ[ZgidPage 54####### 6hCZZYZY

 A^[i^c\HigVehgViZY[dgViaZVhi'%%%aWh#

################################################################### '

s EdlZg A^[i^c\ :fj^ebZci gViZY [dg Vi aZVhi

'%%%aWh##################################### 6hCZZYZY

Items Needed for

Setup

Ndjg bVX]^cZ lVh XVgZ[jaan eVX`V\ZY [dg hV[Z

igVchedgiVi^dc# GZbdkZ i]Z eVX`V\^c\ bViZg^Vah

[gdb VgdjcY ndjg bVX]^cZ VcY ^cheZXi ^i# >[ ndj

Y^hXdkZgi]ZbVX]^cZ^hYVbV\ZY!please imme-

diately call Customer Service at (570) 546-9663

for advice.

HVkZi]ZXdciV^cZghVcYVaaeVX`^c\bViZg^Vah[dg

edhh^WaZ ^cheZXi^dc Wn i]Z XVgg^Zg dg ^ih V\Zci#

Otherwise, filing a freight claim can be difficult.

L]ZcndjVgZXdbeaZiZanhVi^h[^ZYl^i]i]ZXdcY^"

i^dcd[ndjgh]^ebZci!^ckZcidgni]ZXdciZcih#

Unpacking

The Model G4791 is a

heavy machine. Serious

personal injury may occur

if safe moving methods

are not used. To be safe,

get assistance and use

power equipment rated

for at least 2000 lbs. to

move the shipping crate

and remove the machine

from the crate.

NOTICE

The chip pan and cabinet stand center

panel are attached to the inside walls of the

shipping crate. When removing the crate

top and sides, take care not to damage

these parts.

<),.&&'m(.AVg\Z8dbWdAVi]Z$B^aa

"&("

Inventory

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cZcihh]^eeZYl^i]ndjgbVX]^cZ#AVni]ZXdbed"

cZcihdjiid^ckZcidgni]Zb#

Note: If you can't find an item on this list, check

the mounting location on the machine or examine

the packaging materials carefully. Occasionally

we pre-install certain components for shipping

purposes.

Inventory: (Figures 3–4) Qty

A. AVi]Z$B^aacdih]dlc################################ &

B. LgZcX]Zh-$&%bb!&,$&.bb############&:VX]

C. 9g^[i@Zn###################################################### &

D. =ZmLgZcX]Zh(!)!*!+bb##############&:VX]

E. He^cYaZ8Ve################################################ &

F. 9ZVY8ZciZgBI(##################################### &

G. 9ZVY8ZciZgBI*##################################### &

H. 6gWdg7&+"BI(######################################### &

I. 9g^aa8]jX`7&+@Zn#####################&:VX]

J. 8gVc`=VcYaZ############################################# &

K. )"?Vl8]jX`-@Zn####################&:VX]

L. ;VXZeaViZ-############################################### &

M. ("?Vl8]jX`+@Zn####################&:VX]

N. ("?Vl:miZgcVa?VlHZi############################# &

O. 8ZciZgEVcZa7gVX`Zih################################ '

P. Bdjci^c\7daih

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S. HiZVYnGZhi################################################ &

T. ;daadlGZhi################################################# &

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V. 8]^eEVccdih]dlc################################# &

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·E]^aa^eh=ZVYHXgZlh-"('m

¿'######## &+

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[dgi]ZhV`Zd[ZmeZY^ZcXn!gZeaVXZbZcihXVcWZ

dWiV^cZYVindjgadXVa]VgYlVgZhidgZ#

SUFFOCATION HAZARD!

Immediately discard all plas-

tic bags and packing materi-

als to eliminate choking/suf-

focation hazards for children

and animals.

Figure 3.BdYZa<),.&^ckZcidgn6¶B#

;

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"&)"

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Floor Load

GZ[Zgidi]ZMachine Data SheetdcPage 4 [dg

i]Z lZ^\]i VcY [ddieg^ci heZX^[^XVi^dch d[ ndjg

bVX]^cZ# HdbZ gZh^YZci^Va [addgh bVn gZfj^gZ

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bVX]^cZVcYdeZgVidg#

Placement Location

8dch^YZg Zm^hi^c\VcY Vci^X^eViZY cZZYh! h^oZ d[

bViZg^VaidWZegdXZhhZYi]gdj\]ZVX]bVX]^cZ!

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di]ZgbVX]^cZgnl]ZcZhiVWa^h]^c\VadXVi^dc[dg

ndjgcZlbVX]^cZ#HZZFigure 6[dgi]Zb^c^bjb

ldg`^c\XaZVgVcXZh#

Children and visitors may be

seriously injured if unsuper-

vised around this machine.

Lock entrances to the shop

or disable start switch or

power connection to prevent

unsupervised use.

Site Considerations

Figure 6.B^c^bjbldg`^c\XaZVgVcXZh#

.&

)'

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i]^h egdiZXi^kZ XdVi^c\ l^i] V hdakZci XaZVcZg dg

YZ\gZVhZg!hjX]Vhh]dlc^cFigure 5#;dgi]dg"

dj\]XaZVc^c\!hdbZeVgihbjhiWZgZbdkZY#

For optimum performance, clean all moving

parts or sliding contact surfaces.6kd^YX]ad"

g^cZ"WVhZY hdakZcih! hjX] Vh VXZidcZ dg WgV`Z

eVgih XaZVcZg i]Vi bVn YVbV\Z eV^ciZY hjg[VX"

Zh#6alVnh[daadli]Z bVcj[VXijgZg»h ^chigjXi^dch

l]Zcjh^c\VcnineZd[XaZVc^c\egdYjXi#

Clean Up

Gasoline and petroleum

products have low flash

points and can explode

or cause fire if used to

clean machinery. DO

NOT use these products

to clean the machinery.

Many cleaning solvents

are toxic if inhaled.

Minimize your risk by only

using these products in a

well ventilated area.

G2544—Solvent Cleaner & Degreaser

6 \gZVi egdYjXi [dg gZbdk^c\ i]Z lVmn h]^ee^c\

\gZVhZ[gdbndjgbVX]^cZYjg^c\XaZVcje#

Figure 5. 8aZVcZg$YZ\gZVhZgVkV^aVWaZ[gdb

<g^ooan#

<),.&&'m(.AVg\Z8dbWdAVi]Z$B^aa

"&*"

Placement &

Assembly

The Model G4791 is a

heavy machine. Serious

personal injury may occur

if safe moving methods

are not used. To be safe,

get assistance and use

power equipment rated

for at least 2000 lbs. to

move the shipping crate

and remove the machine

from the crate.

To move and assemble your mill/lathe:

1. JhZ Z^\]i -"(' m

¿' E]^aa^eh ]ZVY hXgZlh

VcY [aVi lVh]Zgh id ViiVX] i]Z XZciZg eVcZa

WgVX`Zih id i]Z h^YZh d[ i]Z XVW^cZi hiVcYh!

Vhh]dlc^cFigure 7#

 Note: Leave the screws slightly loose for

adjusting the center panel in a later step.

Figure 7.8VW^cZihiVcYXZciZgeVcZaWgVX`Zi

^chiVaaZY&d['#

2. Edh^i^dc i]Z XVW^cZi hiVcYh Veegdm^bViZan

'- VeVgi ^c i]Z egZeVgZY adXVi^dc [dg i]Z

bVX]^cZ#

 Note: Do not mount the cabinet stands to the

floor for now so that they can be aligned with

the chip pan and machine in the following

steps.

3. EaVXZi]ZX]^eeVcdcided[i]ZXVW^cZihVcY

Va^\c i]Z bdjci^c\ ]daZh l^i] i]dhZ ^c i]Z

XVW^cZih#

4. GZbdkZi]ZhiZVYngZhi[gdbi]ZbVX]^cZ#

5. BdkZ i]Z iV^ahidX` VcY XVgg^V\Z id i]Z g^\]i

ZcYd[i]ZWZYlVn#

6. LgVe i]Z a^[i^c\ higVeh jcYZgcZVi] i]Z aZ[i

h^YZd[i]ZWVhZVcYjcYZgi]ZXZciZgd[i]Z

WZYlVn!Vhh]dlc^cFigure 8#

 Note: Place a piece of 2 x 4 between the

right lifting strap and the leadscrew to prevent

the leadscrew from bending, as shown in

Figure 8.

Figure 8.A^[i^c\higVehedh^i^dcZYl^i]V'm)

egdiZXi^c\i]ZaZVYhXgZl#

'm)Hjeedgi

"&+"

<),.&&'m(.AVg\Z8dbWdAVi]Z$B^aa

Mounting to Shop

Floor

7. JhZ V &.bb lgZcX] id jcWdai i]Z bVX]^cZ

[gdbi]Zh]^ee^c\eVaaZi!i]ZcViiVX]i]Za^[i^c\

higVehidi]ZedlZga^[i^c\Zfj^ebZci#

8. L^i]Vhh^hiVcXZidWVaVcXZi]ZadVY!XVgZ[jaan

a^[ii]ZbVX]^cZVcYedh^i^dc^idkZgi]ZXVW^"

cZihiVcYh#

9. >chiVaai]Z[djg

¿-"&(m'

¿)]ZmWdaihi]gdj\]

i]Z bVX]^cZ WVhZ! X]^e eVc! VcY ^cid i]Z

XVW^cZihiVcYhhZZFigure 9#

·>[ndjl^aaWZbdjci^c\i]ZbVX]^cZidi]Z

[addg!aZVkZi]Za^[i^c\higVeh^ceaVXZida^[i

VcY bdkZ i]Z VhhZbWan Yjg^c\ i]Vi egd"

XZhh#

 Note: It may be necessary to slightly re-

position the cabinets and chip pan during this

step.

Figure 9.Bdjci^c\]ZmWdai^chiVaaZY&d[)#

&d[)

10. JhZ i]Z gZbV^c^c\ -"(' m

¿'E]^aa^eh ]ZVY

hXgZlhVcY[aVilVh]Zghid^chiVaai]ZXVW^cZi

hiVcYXZciZgeVcZadci]ZWgVX`Zih!i]Zc[jaan

i^\]iZcVaad[i]ZhXgZlh#

11. JhZVbVX]^c^hihegZX^h^dcaZkZaidbV`ZhjgZ

i]ZWZYlVn^haZkZah^YZ"id"h^YZVcY[gdci"id"

WVX`#>[cZXZhhVgn!eaVXZh]^bhWZilZZci]Z

XVW^cZihiVcYhVcYi]Z[addg#

 Note: Re-check the bedway for levelness

after the first 24 hours, the first two weeks,

then annually after that.

6ai]dj\] cdi gZfj^gZY! lZ gZXdbbZcY i]Vi ndj

bdjci ndjg cZl bVX]^cZ id i]Z [addg# 7ZXVjhZ

i]^h ^h Vc dei^dcVa hiZe VcY [addg bViZg^Vah bVn

kVgn! [addg bdjci^c\ ]VgYlVgZ ^h cdi ^cXajYZY#

<ZcZgVaan! ndj XVc Z^i]Zg Wdai ndjg bVX]^cZ id

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dei^dch VgZ YZhXg^WZY WZadl# L]^X]ZkZg dei^dc

ndjX]ddhZ!^i^hcZXZhhVgnidaZkZandjgbVX]^cZ

l^i]VegZX^h^dcaZkZa#

Bolting to Concrete Floors

6cX]dghijYhVcYaV\h]^ZaYVcX]dghl^i]aV\Wdaih

Figure 10VgZildedejaVgbZi]dYh[dgVcX]dg"

^c\ Vc dW_ZXi id V XdcXgZiZ [addg# LZ hj\\Zhi

ndjgZhZVgX] i]ZbVcndei^dch VcYbZi]dYh[dg

bdjci^c\ndjgbVX]^cZVcYX]ddhZi]ZWZhii]Vi

[^ihndjgheZX^[^XVeea^XVi^dc#

Figure10#Ine^XVa[VhiZcZgh[dgbdjci^c\id

XdcXgZiZ[addgh#

6cX]dgHijY

AV\H]^ZaY6cX]dg

AV\7dai

NOTICE

Anchor studs are stronger and more per-

manent alternatives to lag shield anchors;

however, they will stick out of the floor,

which may cause a tripping hazard if you

decide to move your machine.

<),.&&'m(.AVg\Z8dbWdAVi]Z$B^aa

"&,"

Figure11#BVX]^cZbdjciZmVbeaZ#

Using Machine Mounts

Jh^c\bVX]^cZbdjcih!h]dlc^cFigure 11!\^kZh

i]ZVYkVciV\Zd[[VhiaZkZa^c\VcYk^WgVi^dcgZYjX"

i^dc# I]Z aVg\Z h^oZ d[ i]Z [ddi eVYh Y^hig^WjiZh

i]ZlZ^\]id[i]ZbVX]^cZidgZYjXZhigV^cdci]Z

[addg#

NOTICE

We strongly recommend securing your

machine to the floor if it is hardwired to the

power source. Consult with your electrician

to ensure compliance with local codes.

Check Gearbox Oil

>i^hXg^i^XVai]VindjbV`ZhjgZi]ZgZ^hd^a^ci]Z

aVi]Z\ZVgWdmWZ[dgZegdXZZY^c\l^i]i]ZiZhigjc#

GZ[Zgidi]ZLubrication^chigjXi^dchdcPage 54

[dgbdgZYZiV^ahdcl]^X]ineZd[d^aidjhZ!]dl

bjX]idjhZ!VcYl]ZgZideji^i#

GEARBOXES MUST

BE FILLED WITH OIL!

NO OIL SHIPPED WITH

MACHINE!

Refer to the Lubrication

Section in this Manual

for Recommended

Oil Type.

DcXZ i]Z VhhZbWan ^h XdbeaZiZ! iZhi gjc ndjg

bVX]^cZidbV`ZhjgZ^igjchegdeZgan#

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XdbedcZci YdZh cdi [jcXi^dc Vh ^i h]djaY! hide

jh^c\ i]Z bVX]^cZ ^bbZY^ViZan! i]Zc gZk^Zl i]Z

TroubleshootingdcPage 61#

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IZX]HjeedgiVi*,%*)+".++([dgVhh^hiVcXZ#

To test run the machine:

1. BV`ZhjgZndj]VkZgZVYi]ZhV[Zin^chigjX"

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i]ZbVX]^cZ^hhZijeegdeZgan#

2. GZVY VcY jcYZghiVcY i]Z Basic Controls

hjWhZXi^dchdcPage 20 VcY27#

3. EZg[dgb Vaa ajWg^XVi^dc egdXZYjgZh Vh

^chigjXiZY ^c i]Z Lubrication hjWhZXi^dc dc

Page 54#

4. BV`ZhjgZVaaiddah VcYdW_ZXihjhZYYjg^c\

hZijeVgZXaZVgZYVlVn[gdbi]ZbVX]^cZ#

5. Ejh]i]ZbV^cedlZg:B:G<:C8NhideWji"

idc^c!i]Zcil^hi^iXadX`l^hZhd^iedehdji#

L]Zci]ZWjiidcedehdji!i]Zhl^iX]^hgZhZi

VcYgZVYn[dgdeZgVi^dchZZFigure 12#

Test Run

Figure 12.GZhZii^c\i]ZbV^cedlZg

:B:G<:C8NhideWjiidc#

"&-"

<),.&&'m(.AVg\Z8dbWdAVi]Z$B^aa

Before starting the machine, make sure you

have performed the preceding assembly

and adjustment instructions, and you have

read through the rest of the manual and

are familiar with the various functions and

safety features on this machine. Failure to

follow this warning could result in serious

personal injury or even death!

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aZkZgjeidi]ZY^hZc\V\ZYedh^i^dcidZchjgZ

i]ZXVgg^V\Zl^aacdibdkZjcYZgedlZgl]Zc

i]ZaVi]Z^hgjcc^c\Figure 13#

8. 8dccZXii]ZbVX]^cZidedlZg#

9. EgZhhi]ZbV^cedlZgDCWjiidc·i]ZbV^c

edlZg aVbe h]djaY a^\]i Wji cZ^i]Zg bdidg

h]djaYijgcON#

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VgZdeZgVi^c\XdggZXianWnejh]^c\i]ZDCI

Wjiidc#

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hidei]ZbVX]^cZ#

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XdggZXi^c\ediZci^VaegdWaZbh#

11. EgZhh i]Z bV^c edlZg :B:G<:C8N hide

Wjiidc^c#

12. L>I=DJI gZhZii^c\ i]Z :B:G<:C8N hide

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eaZiZ#EgdXZZYidSpindle Break-In#

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:B:G<:C8N hide Wjiidc ejh]ZY ^c!

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hV[Zin[ZVijgZ^hcdildg`^c\XdggZXian#I]^h

hV[Zin [ZVijgZ bjhi ldg` egdeZgan WZ[dgZ

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IZX]Hjeedgi[dg]Zae#

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Figure 13.;ZZYgViZgVc\ZaZkZgVcYi]Z]Va["

cjiaZkZg^ci]ZcZjigVa$Y^hZc\V\ZYedh^i^dc#

CZjigVa

9^hZc\V\ZY

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Grizzly G4791 Owner's manual

Brand: Grizzly

Model: G4791

Category: Lathes

Type: Owner's manual

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Grizzly G4791 Owner's manual

Grizzly G4791 Owner's manual

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