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SG-C3001-7R SG-C3001-7C SG-C3001-7DSG-C3001-7C-DX
SG-C3001-7R
Internal Geared Hub for Roller Brake (7-speed)
• Improved internal gear engagement that allows
for a smoother ride
• New, updated and polished design that
complements the bike
»Aluminum hub shell
• Color options: Black, Silver
SG-C3001-7C
Internal Geared Hub for Coaster Brake (7-speed)
• Improved internal gear engagement that allows
for a smoother ride
• New, updated and polished design that
complements the bike
»Steel hub shell
• Deluxe version (SG-C3001-7C-DX)
• Color options: Black, Silver
SG-C3001-7D
Internal Geared Hub for Disc Brake (7-speed)
• Improved internal gear engagement that allows
for a smoother ride
• New, updated and polished design that
complements the bike
»Aluminum hub shell
• Disc version for sportier-styled bikes
»Disc brake specication for a greater variety of
bikes
• CENTER LOCK
• Color options: Black, Silver
The CENTER LOCK system makes an easy disc brake rotor installation possible with
spline mount and a lock ring.
The lock ring mounting system reduces the total workinghours by shortening
the amount of time of bothinstallation and de-installation. In addition, the
securefixing by the spline mount enhances precision and rigidity while improving
braking efficiency.
TECHNOLOGIES
Disc brake rotor spline
Disc brake rotor
Lock ring
CENTER LOCK System
Coaster Brake
The SHIMANO NEXUS coaster brake is operated by pedaling backward in a similar
way as ordinary types. Its uniqueness is that braking power transmitted to the
wheel directly for the SHIMANO NEXUS internal coaster brake is independent of
the gear shifting mechanism built into the hub. Also it always generates the same
braking force regardless of gear position to actualize comfortable and reliable
riding. It actualizes the braking force to meet the ISO 4210 standard.
Hub shell
Sprocket
Brake shoe
Brake roller Braking cam
Actuator
Equal braking force in each gear
1.5
1.0
2.0
0.5
3-RETNI dna ,7-RETNI ,8-RETNI
Wide-Range Gearing
QUICK
TIP
CAUTION
148%
low-high
difference
244%
low-high
difference
307%
low-high
difference
1st
dn2
dr3 ht4
ht5
ht6 ht7 ht8
0.73(27T)
)T02(00.1
)T51(63.1
)T23(36.0
)T72(47.0
)T42(48.0
)T02(99.0
)T71(51.1
)T51(43.1
)T31(55.1
)T83(35.0
)T13(46.0
)T72(57.0
)T42(58.0
)T02(00.1
)T61(22.1
)T41(24.1
)T21(16.1
INTER-3
7-RETNI
8-RETNI
The table at the left shows the relative gear
ratio when used with a 20T sprocket.
The numbers in parenthesis show the sprocket
size that each gear ratio corresponds to
in a
derailleur system.
Please use a non-turn washer to secure
the hub axle into the dropout of the
frame.