Shimano SG-8C31 Exploded View

SG-8C31
Shimano
Brand
Shimano
Model
SG-8C31
Type
Exploded View

This manual is also suitable for

Shimano SG-8C31 is an 8-speed internal hub with a coaster brake, designed for smooth and reliable shifting. It features a wide gear range, making it suitable for various riding conditions, from leisurely cruises to challenging climbs. The coaster brake provides easy and intuitive braking, while the internal hub design ensures low maintenance and protection from external elements. With its durable construction and user-friendly operation, the Shimano SG-8C31 is an excellent choice for everyday commuting, recreational riding, and touring.

Shimano SG-8C31 is an 8-speed internal hub with a coaster brake, designed for smooth and reliable shifting. It features a wide gear range, making it suitable for various riding conditions, from leisurely cruises to challenging climbs. The coaster brake provides easy and intuitive braking, while the internal hub design ensures low maintenance and protection from external elements. With its durable construction and user-friendly operation, the Shimano SG-8C31 is an excellent choice for everyday commuting, recreational riding, and touring.

SG-8C22
SG-8C20
Internal Assembly (Axle Length 184 mm)
Internal Assembly (Axle Length 184 mm), Brake Arm Unit, Right Hand Dust Cap A & C
Internal Assembly (Axle Length 184 mm), Brake Arm Unit, Right Hand Dust Cap A & B
Right Hand Dust Cap A w/Seal (A spec.)
Right Hand Dust Cap A w/Seal (B spec.)
Right Hand Dust Cap C (A spec.)
Right Hand Dust Cap B (B spec.)
Brake Arm Unit (3 Serration)
Brake Shoe Unit & Brake Arm Unit
Brake Shoe Unit (3 pcs.)
O-Ring
Stop Ring ( 9.6 mm)
Ring Gear Unit
Carrier Unit
Ring Gear 1
Ring Gear 1 Stop Ring
Ball Retainer O (3/16" x 26)
Hub Axle Unit (Axle Length 184 mm) & Right Hand Cone w/Seal
Clutch Unit
Return Spring A
Driver Unit
Ball Retainer P (3/16" x 13)
Right Hand Cone w/Seal
Driver Plate
Lock Washer
Stop Washer
Right Hand Lock Nut (3.4 mm)
Cap Nut (3/8")
Non-turn Washer 5L (Brown)
Non-turn Washer 6L (White)
Non-turn Washer 7L (Gray)
Left Hand Lock Nut (3 mm)
Stop Nut
Brake Arm Clip Unit (5/8")
Brake Arm Clip Unit (3/4")
Clip Screw (M6 x 16)
Clip Nut
Ball Retainer B (3/16" x 16)
Hub Shell Slide Spring
Sprocket Wheel 16T (Silver)
Sprocket Wheel 18T (Silver)
Sprocket Wheel 19T (Silver)
Sprocket Wheel 20T (Silver)
Sprocket Wheel 21T (Silver)
Sprocket Wheel 22T (Silver)
Sprocket Wheel 23T (Silver)
Snap Ring C
CJ-8S20 Cassette Joint Unit
Driver Cap
CJ-8S20 Cassette Joint
Cassette Joint Fixing Ring
Inner Cable Fixing Bolt Unit
Non-turn Washer 5R (Yellow)
Non-turn Washer 6R (Silver)
Non-turn Washer 7R (Black)
TL-8S30 Carrier Unit Tool
TL-8S20 Right Hand Cone Installation Tool
TL-8S11 Right Hand Cone Removal Tool
Internal Hub Grease (Net. 100g)
WB maintenance oil set
WB maintenance oil (1L)
Bottle
Right Hand Hub Cup
Y-37G
Y-37G
Y-37G
Y-37G
Y-34R
Y-36R
Y-34R
Y-37G
Y-37G
Y-37G
Y-37E
Y-33Y
Y-37G
Y-37G
Y-35P
Y-34R
Y-34R
Y-37G
Y-35P
Y-34R
Y-37G
Y-34R
Y-37J
Y-34R
Y-34R
Y-34R
Y-33Z
Y-314
Y-33M
Y-33M
Y-33M
Y-35P
Y-35P
Y-33F
Y-33F
Y-75M
Y-317
Y-330
Y-35J
Y-322
Y-322
Y-322
Y-322
Y-330
Y-330
Y-330
Y-321
Y-74Y
Y-74Y
Y-74Y
Y-33Z
Y-74Y
Y-33Z
Y-33M
Y-33M
Y-708
Y-708
Y-708
Y-041
Y-002
Y-002
Y-002
Y-34R
98010
98110
98120
98080
98110
07000
0E000
98070
98100
98020
08000
19000
98030
98040
11010
80000
98030
98130
98060
21000
98060
98070
98080
12000
98090
09000
07020
14010
39510
39610
39710
28000
22000
98090
98100
06000
27200
98110
11100
03220
03420
03520
03620
60000
60100
60200
20100
98120
18000
98130
98020
98030
20500
39600
39700
00300
00200
00600
20800
98010
01000
01100
0D000
DESCRIPTION
SHIMANO
CODE NO.
ITEM
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
INTERCHANGE-
ABILITY
A: Same parts.
B: Parts are usable, but differ in materirals, appearance, finish, size, etc.
Absence of mark indicates non-interchangeability.
B
B
A
A
A
A
BB
AA
BB
BB
AA
AA
BB
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
Jun.-2010-2785C
Shimano Inc. I
C
A
B
A specifications:
Right hand dust cap A
Specifications
B specifications:
Right hand dust cap A
Applicable sprockets
Outward
assembling
Inward
assembling
16T – 23T
16T – 23T 20T – 23T
4
5
CJ-8S20
TL-8S30 TL-8S20 TL-8S11
1
2
3
4
5
6
95
mm
Internal Assembly
Internal Hub Grease
(For coaster brake also)
1
2
3
4
5
6
7
8
28
28
29
30
31
32
33 34
35
36
37
38
39
40 41 42
43
44
45
46
47
48
49
50 51
1
8
9
10
11
12
13
14 15 16
17
19 20
21 22
24 25 26 27
18
23
SG-8C31
NEXUS 8-Speed Internal Hub w/Coaster Brake
  • Page 1 1

Shimano SG-8C31 Exploded View

SG-8C31
Shimano
Brand
Shimano
Model
SG-8C31
Type
Exploded View
This manual is also suitable for

Shimano SG-8C31 is an 8-speed internal hub with a coaster brake, designed for smooth and reliable shifting. It features a wide gear range, making it suitable for various riding conditions, from leisurely cruises to challenging climbs. The coaster brake provides easy and intuitive braking, while the internal hub design ensures low maintenance and protection from external elements. With its durable construction and user-friendly operation, the Shimano SG-8C31 is an excellent choice for everyday commuting, recreational riding, and touring.

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