RPM BB Cartridge 118mm 40–50Nm
What Is It?
The RPM BB Cartridge 118mm is a sealed-cartridge, square-taper bottom bracket designed for bicycles using a compatible JIS square-taper crankset. The 118mm spindle length is commonly paired with a 68mm BSA/English threaded bottom-bracket shell.
Key Features
- 118mm spindle length
- Sealed cartridge bearing design
- JIS square-taper interface
- Designed for 68mm BSA/English threaded shells
- Low-maintenance bearing system
- Suitable for MTB, hybrid, commuter and recreational bikes
-
40–50Nm cup installation torque specification
Specifications
| Specification |
Details |
| Product |
RPM BB Cartridge |
| Spindle Length |
118mm |
| Shell Width |
68mm |
| Interface |
Square Taper – JIS |
| Thread Standard |
BSA / English |
| Bearing Type |
Sealed Cartridge |
| Installation Torque |
40–50Nm |
| Application |
MTB / Hybrid / Commuter / Road |
The 118mm version is listed as a sealed JIS square-taper cartridge for a standard 68mm threaded shell, with 40–50Nm specified for cup installation.
Benefits
-
Low maintenance: Sealed bearings help protect against dirt, water and debris.
-
Smooth rotation: Provides consistent crank movement.
-
Reliable replacement: Suitable for replacing worn cartridge bottom brackets.
-
Square-taper compatibility: Works with compatible traditional JIS cranksets.
-
Durable design: Suitable for everyday MTB, hybrid and commuter use.
-
Straightforward installation: A cartridge design allows quick replacement without individual bearing adjustment.
Best Suited For
Ideal for older MTB bikes, hybrid bicycles, commuters, recreational bikes and road bikes using a JIS square-taper crankset and a 68mm BSA threaded bottom-bracket shell.
Important: The 118mm spindle length is critical for crankset compatibility and chainline. Confirm the spindle length of your existing bottom bracket and the crank manufacturer's recommended length before replacing it.
