曲柄组 (1x10速)

ZEE_M640_m

FC-M640

ZEE_M640_m

FC-M640

曲柄组 (1x10速)

  • FEATURE
    • FC-M640 68/73mm中轴
    • FC-M645 83mm中轴
    • 压入式中轴兼容
    • 34T/36T/38T
    BENEFIT
    • 强劲的厚壁二片式曲柄臂结构
    • 强劲的钢轴
    • 钢制脚踏螺纹
    • 可选规格
    • 重量: ‌906g (FC-M640, 36T, 170mm, 不含保护盖) 938g (FC-M645, 36T, 170mm, 不含保护盖)

相关技术

产品规格

型号 FC-M640
系列 ZEE M640 系列
Color Series color, -
Average weight 828 g (38T) 817 g (36T) 807 g (34T)
2-piece crank construction X
Chain line (mm) 50.4
Chain ring combination 38, 36, 34T (FC-M640/M645 chainring)
Compatible BB type_Outboard X
Compatible BB type Outboard
Compatible chain HG-X 10 速
Crank Arm Length 165, 170, 175
Crank fixing bolt included X
Crank arm length (mm)_165.0 X
Crank arm length (mm)_170.0 X
Crank arm length (mm)_175.0 X
Gear arms 4 臂
Optional chain guard_Without chain / bash guard X
Optional Chain Guard Without chain / bash guard
P.C.D. (mm) 104
Rear speeds 10
Recommended BB_Pressfit SM-BB71-41A
Recommended BB_Threaded (E-type) SM-BB52
Recommended BB_Threaded (normal) SM-BB52
Threaded BB shell width_68mm X
Threaded BB shell width_73mm X
Threaded BB Shell Width 68mm, 73mm
Crank arm fixing bolt_With X
Includes Crank Arm Fixing Bolt Yes
Q-factor (mm) 174.7