Mitsubishi Electric LY2-3300-B0B User manual

Brand: Mitsubishi Electric

Model: LY2-3300-B0B

Category: Sewing machines

Type: User manual

Mitsubishi Electric LY2-3300-B0B industrial sewing machine offers precise and efficient single-needle lockstitch performance with both upper and lower feed capabilities. Ideal for various sewing applications, it features adjustable stitch length, backstitching, and thread tension controls for customized sewing.

A180E352P03

INSTRUCTION MANUAL

SINGLE-NEEDLE LOCKSTITCH UPPER AND LOWER FEED

INDUSTRIAL SEWING MACHINE

LY2-3300-B0B

MODEL

PRECAUTION BEFORE STARTING OPERATION

1 Safety Precautions

1. Whenturningthepoweron,keepyourhandsandngersawayfromtheareaaround/

undertheneedleandtheareaaroundthepulley.

2 . Thepowermustbeturnedo󰮏whenthemachineisnotused,orwhentheoperator

leaveshis/herseat.

3 . Thepowermustbeturnedo󰮏beforetiltingthemachinehead,installingorremoving

the“V”belt,adjustingthemachine,orreplacingparts.

4 . Avoidplacingngers,hairs,obstacles,etc.nearthepulley,“V”belt,bobbinwinder

wheel,ormotorwhenthemachineisinoperation.Injurycouldresult.

5 . Don’tputngersintothethreadtake-uplevercover,around/undertheneedle,or

pulleywhenthemachineisinoperation.

6 . Ifthebeltcover,thengerguard,and/ortheeyeguardareinstalled,don’toperate

themachinewithoutthesesafetydevices.

2 Precaution before Starting Operation

1. Ifthemachine’soilpanhasanoilsump,neveroperatethemachinewithoutllingoil

init.

2 . Ifthemachineislubricatedbyadropoiler,neveroperatethemachinewithout

lubricating.

3. Whenanewsewingmachineisoperated,verifytherotationaldirectionofthepulley

withthepoweron.

 (Thepulleyshouldrotatecounterclockwisewhenviewedfromthepulley.)

4 . Verifyvoltageand(singleorthree)phaseindicatedonthenameplateofthemotor.

3 Precaution for Operating Conditions

1. Avoidusingthemachineatabnormallyhightemperature(35℃orhigher)orlow

temperature(5℃orlower).Otherwise,machinefailuremayresult.

2 . Avoidusingthemachineindustyconditions.

3 . Avoidusingthemachineinconditionslledwithalotofelectricnoisessuchashigh-

frequencywelders.

INTRODUCTION

　ThankyouverymuchforpurchasingMitsubishiindustrialsewingmachine.

　Pleasereadthisinstructionmanualbeforeoperatingthesewingmachine.Pleasereadalso

“SafetyManual”,“InstructionmanualforMitsubishiLimiservoX”andoperatethesewing

machinecorrectlyandsafely.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

CONTENTS

USAGE PRECAUTION ……………………………………………… 1

1Lubrication …………………………………………………………………………… 1

2Adjustmentoflubricationtotherotatinghook ………………………………… 1

3Periodicalcleaning…………………………………………………………………… 2

4Installationofthebeltcover ……………………………………………………… 2

5Precautiononoperation …………………………………………………………… 2

HOW TO USE ……………………………………………… 3

1Installationoftheneedle …………………………………………………………… 3

2Windingofthebobbinthread……………………………………………………… 3

3Threadingoftheneedlethread…………………………………………………… 4

4Adjustmentoffeed(stitch)lengthandbackstitch……………………………… 4

5Balanceofthreadstension ………………………………………………………… 4

6Adjustmentoftheneedlethreadtension………………………………………… 4

7Adjustmentofthebobbinthreadtension………………………………………… 5

8Adjustmentofthepresserfootpressure………………………………………… 5

9Adjustmentofthefeeddogheight ……………………………………………… 5

:Adjustmentofthefeedfootandthepresserfoot ……………………………… 6

ATohandlethreadatthestartofsewing ………………………………………… 7

SPECIFICATIONS ……………………………………………… 8

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

1 Lubrication

●Pouroiluptothearrowpositionbeforestarting

operation.

　　　　…About3cc

　　　　…5,6drops

　　　　…1,2drops

Foroil,use“PulleySFoil”speciedby

Mitsubishi.

※Refer



PulleySFoil：Specicgravity(15℃ )=0.86(g/cm3)

  ：Viscosity(40℃ )=18.0(mm2/s)

●Whenanewsewingmachineisusedforthe

rsttime,orsewingmachineleftoutofusefor

considerablylongtimeisusedagain,replenisha

suitableamountofoiltotheportionsindicated

byarrowsinthebelowgure.

2 Adjustment of lubrication to the

rotating hook

Adjustthelubricationamountoftherotatinghook

byturningthescrewⒶ.

USAGE PRECAUTION

Supply the oil to the tank of the bed

Filloiluptothelinewhentheoilwouldcome

bottomlevel.

— 1 —

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

3 Periodical cleaning

1 . Machine

2 . Motor

Removedustfromthemotorltereveryoneortwomonths.(Continuedoperationwiththelter

cloggedwithlintordustmayoverheatthemotor.)

3 . Control Box

Removedustfromtheconnector.(Iftheconnectoriscoveredwithdust,themachinemight

malfunction.)

4 Installation of the belt cover

1 . Installthebeltcoveronthemachinesideforsafety.Refertotheprovidedinstructiondocument

containedinthesamepackage.

2 . Installthebeltcoveronthemotorsideforsafety.

5 Precaution on operation

( 1 ) Whenthepoweristurnedonoro󰮏,keepfootawayfromthepedal.

( 2 ) Itshouldbenotedthatthebrakemaynotworkwhenthepowerisinterruptedorpowerfailure

occursduringsewingmachineoperation.

( 3 ) Sincedustinthecontrolboxmightcausemalfunctionorcontroltroubles,besuretokeepthe

controlboxcovercloseduringoperation.

( 4 ) Donotapplyamultimetertothecontrolcircuitforchecking,otherwisevoltageofmultimeter

mightdamagesemiconductorcomponentsinthecircuit.

USAGE PRECAUTION

● Removethethroatplateandcleanthe

feeddog.Reassemblyshouldbedoneby

screwinginthescrew2-3rotationsbyhand

atrst,thentighteningthemevenlyusinga

long-shaftedscrewdriver.

● Leanthemachineheadandcleanthehook

andremoveanydustand/orlintinsidethe

bobbincase.

— 2 —

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

2 Winding of the bobbin thread

Note: When bobbin thread is wound, keep the presser foot lifted.

　Adjustment ●Tension of wound thread Slackwindingisrecommendedforpolyesterthreadand

nylonthread.

●Conically wound thread Movethethreadguidetowardsmallerdiameterofwound

threadlayer.

●Amount of wound thread Loosenthewindingamountadjustmentscrewtodecrease

threadwindingamountandtightenthescrewtoincrease

threadwindingamount.

1 Installation of the needle

Note: Before installing the needles, be sure to turn o󰮏 the power.

Note：Ifthreadsnappingoccursduringreversesewingwith

polyesterthreads,itmaybeavoidedbyttingtheneedle

withthelonggrooveshiftedtothefrontside.Normally,

avoidttingtheneedlewiththegroovefacingbackward.

BothneedlesDP × 17and

DB × 1canbeused.

Usethetimingmarksas

showninthegure.

HOW TO USE

— 3 —

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

5 Balance of threads tension

6 Adjustment of the needle

thread tension

●Theneedlethreadtensionshouldbeadjusted

onthebasisofthebobbinthreadtension.

●Adjusttheneedlethreadtensionbyturningthe

threadtensionnut.

 Theneedlethreadtensioncanbealsoadjusted

bychangingintensityandmovablerangeof

thethreadtake-upspringincaseofsewingthe

specialfabricandthread.

3 Threading of the needle thread

Withthethreadtake-upleverlocatedattheupper

mostposition,passtheneedlethreadintheorder

showninthefollowinggure.

4 Adjustment of feed (stitch)

length and backstitch

●Adjustmentoffeed(stitch)length…Adjustfeed

lengthbyturningthefeedlengthsettingdial

whiledepressingthereversesewinglever.

●Backstitch…Directionofstitchingcanbe

reversedbydepressingthereversesewing

lever.

A 

B 

C 

Balancedtension

Tighttheneedlethreadtensionor

loosethebobbinthreadtension

Loosetheneedlethreadtensionor

tightthebobbinthreadtension

HOW TO USE

— 4 —

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

7 Adjustment of the bobbin

thread tension

1 . Thebobbinthreadtensioncanbeadjusted

byturningthescrewⒶ.

8 Adjustment of the presser foot

pressure

1 . Adjustthepresserfootpressureaccordingto

thefabricbyturningthepressureadjusting

screw.

2 . Pressureontheboththepresserfootand

thefeedfootcanbeadjusted.(Theadjusting

screwpositionisfactory-adjustedasshownin

thegure.)

3 . Sewingpressureshouldbeadjustedtothe

minimumrequiredstrength.

9 Adjustment of the feed dog

height

1 . Turnthepulleyandstopitattheposition

wherethefeedliftingrockshaftcrank(right)

swingstotheinnermostposition.

2 . LoosenthescrewⒶ.

 Note:Becarefulnottomovethefeedlifting

rockshaftcrank(right)inthelateraldirection.

3 . Adjustthefeeddogheightbyswingingthe

feedliftingrockshaftcrank(left)andmoving

thefeedbar.

4 . Afteradjusting,fullytightenthescrewⒶ.

The feed dog height is factory-adjusted to 1.0 mm.

HOW TO USE

— 5 —

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

: Adjustment of the feed foot

and the presser foot

1 .

To change the balance of the alternating

movements between the feed foot and presser foot

(1)

Forexample,toincreasetheriseofthefeed

foot,anddecreasetheriseofthepresserfoot

①Turnthepulleyuntilthepresserfootis

slightlyraisedfromthethroatplate.

②

LoosenthesetscrewⒶ(ontherightside)

locatedonthefeedliftingrockshaftcrank(right).

③Thebuilt-inspringpullsdownthepresser

footuntilitmakescontactwiththethroat

plate.Then,tightenthesetscrewⒶ.

④Thiscompletestheadjustment,i.e.,the

protrusionofthepresserfoothasbeen

decreasedbyasetdistance.And,the

verticalmotionofthefeedfoothasbeen

increasedbythatsamedistance.

(2)

Asacontrarycase( 1 ),todecreasetheriseofthe

feedfoot,andincreasetheriseofthepresserfoot.

 First,turnthepulleyuntilthefeedfootis

slightlyraisedfromthethroatplate.Next,

loosenthescrewⒶ.Finally,tightenthe

screwⒶagain.

 Thisdecreasestheriseofthefeedfoot.

2 . Adjustment of the movement height of the

presser foot and feed foot

Note:Whensewingathinfabric,theupanddown

movementshouldbeadjustedatminimum.

●Toadjust,loosenthescrew,andshiftthe

positionofcrankrodboss.

 Upward →Theupanddownmovement

willincrease.(Max.5mm)

 Downward→Theupanddownmovement

willdecrease.(Min.2mm)

3 .

A gap between the feed foot and the presser foot

Note:

Attheconditionthestitchlengthisatmax.,the

min.gapbetweenthefeedfootandthepresser

footisadjustedtobe5mmasstandard.

●LoosenthescrewⒶ,thenturnthefeed

drivingshaft,sothatthegapⒷcanbe

adjusted.

 Afteradjusting,fullytightenthescrewⒶ.

4 .

Proper timing between the upper and lower feed

Note:Althoughtheupperfeedamount(feedfoot)

adjustthelowerfeedamount(feeddog)

areadjustedby1:1,pleaseadjusttheupper

feedamountincreasinglyordecreasingly,

accordingtothematerialtobesewn.

●Toadjust,loosenthenutandshiftthesquare

blockupanddown.

 Upward →Feedingamountwilldecrease

 Downward→Feedingamountwillincrease

HOW TO USE

— 6 —

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

A To handle thread at the start of

sewing

1 . In the case of open sewing:

Whentheneedlethreadisnotheldbythe

presserfootduringsewing,theendofthe

needlethreadisstitchedontothereverseside

ofthecloth,thusenhancingasewingnish.

Slowlystarttotakeupafewstitchesatthe

beginningsoastopreventtheneedlethread

frombeingo󰮏outoftheneedle.

2 . When the needle thread is held by the

presser foot:

Theendoftheneedlethreadremainsonthe

surfaceofthecloth.

Tostitchinthisway,itispreferabletopull

outthesewnfabrictotheothersideofthe

presserfootattheendofsewing.

HOW TO USE

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From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

LY2-3300-B0B Specications

Model

Specications LY2-3300-B0B

Application Heavymaterial

Max.sewingspeed(rpm) 2,000

Stitchlength(mm) 0to8

Needlebarstroke(mm) 35.0

Threadtake-upleverstroke(mm) 73.0

Alternatingmovement(mm) 2.0to5.0(feedfoot)

Feeddogheight(mm) 1.0

Presserfootstroke(mm)

Hand 6.0

Knee 13.0

Needle DP × 17#22(DB× 1#22)

Hook(verticalrotatinghook) Large

Lubricationsystem Manuallubrication(Thehookissupplied

withoilautomaticallyfromthetank)

Beddimensions(mm) 475 ×178

Note:●Thebobbinshouldbeofhighqualityfreefromdeformation.

 ●Somematerialsand/orsewingconditionsmayrequirespecicationsotherthanthoselisted

above.

 ●Thesespecicationsaresubjecttochangeformachineimprovement.

SPECIFICATIONS

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From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

Printed in Japan

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

Mitsubishi Electric LY2-3300-B0B User manual

Brand: Mitsubishi Electric

Model: LY2-3300-B0B

Category: Sewing machines

Type: User manual

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Mitsubishi Electric LY2-3300-B0B User manual

Mitsubishi Electric LY2-3300-B0B User manual

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