Shimano SG-8C20 Service Manual - Page 31
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Hub dimensions (Over Locknut Dimension and Axle)
BC3/8 26 TPI
NON TURN WASHER
SPEC
MARKING
FOR REVERSED FORK
END AND FULL
5L
CHAIN CASE
FOR REVERSED FORK
6L
END
FOR STANDARD
7L
FORK END
Specifications
Function Name
Speed
Model No.
Silent Clutch
Gear Change Support Mechanism
Shifting Power Modulator
Driving Efficiency
Brake
Over Locknut Dim. / OLD (mm)
Axle Length (mm)
Gear Ratio
Hub Shell Material
Finish
Weight
Spoke Hole
Spoke Size
Flange Dist. (mm)
Spoke Hole P.C.D (mm)
Flange Diameter (mm)
Flange Width (mm)
Sprocket Teeth
Sprocket Thickness (mm)
Chain
Chain Recommend
Chain Line (mm) 16-23T
Dishing Distance (mm)
Shifting Lever / AI
Cassette Joint / Motor Uni
25.7
66.15
58.3
29.15
6.4
COLOR
SPANNER W:22
BROWN
WHITE
SPANNER W:17
GRAY
Total
1
2
3
4
5
6
7
8
184
132.3
66.15
C.L. 47.85
2.55
C.L. 42.85
29.15
SPEC
STANDARD
(BOTH USE FOR #13, #14)
8
SG-8C20
X
X
X
Standard
Coaster
132.3
184
307%
0.527
0.644
0.748
0.851
1
1.223
1.419
1.615
Aluminum
Painted
1,990g
36H
#13 / #14
58.3
92.6
105.2
3.2
16T,18T,19T,20T,21T,22T,23T
2.3
1/2"X1/8" or 1/2"X3/32"
CN-NX10
42.85 / 47.85
2.55
SB-8S20 / ST-8S20 / SL-8S20
CJ-8S20 / CJ-8S40
X = available
26
DRIVER CAP
JOINT NUT
BC3/8 26 TPI
6.4
NON TURN WASHER
SPEC
MARKING
FOR REVERSED FORK
END AND FULL
5R
CHAIN CASE
FOR REVERSED FORK
6R
END
FOR STANDARD
7R
FORK END
SURFACE TREATMENT
øX
øY
OF HUB SHELL
2.9
3.9
SILVER PAINTING
INTER-8 coaster
COLOR
YELLOW
SILVER
BLACK
31