RPM BB Cartridge 3NL 122.5mm Cups 40–50Nm
What Is It?
The RPM BB Cartridge 3NL 122.5mm is a sealed-cartridge square-taper bottom bracket designed to provide smooth, low-maintenance crank rotation on compatible bicycles. The unit includes cups and uses a 122.5mm spindle, with a 40–50Nm installation torque specification. It is currently listed by South African bicycle retailers as an RPM bottom-bracket cartridge at around R245.
Key Features
- RPM 3NL cartridge bottom bracket
- 122.5mm spindle length
- Sealed cartridge bearing design
- Square-taper crank interface
- Cups included
- 40–50Nm installation torque
- Designed as a replacement bottom bracket
- Suitable for everyday MTB, hybrid and recreational bicycles
Specifications
| Specification |
Details |
| Product |
RPM BB Cartridge 3NL |
| Spindle Length |
122.5mm |
| Type |
Cartridge Bottom Bracket |
| Crank Interface |
Square Taper |
| Cups |
Included |
| Installation Torque |
40–50Nm |
| Bearing System |
Sealed Cartridge |
| Brand |
RPM |
| Application |
Bicycle / MTB / Hybrid |
The exact product is listed as “Rpm Bb Cartridge 3Nl 122.5Mm Cups 40-50Nm” by Online Bicycle Shop and Olympic Cycles.
Benefits
-
Low maintenance: Sealed cartridge bearings help protect the bearing system from dirt and moisture.
-
Smooth crank rotation: Provides consistent bearing performance.
-
Durable replacement: Suitable for replacing worn or noisy cartridge bottom brackets.
-
Square-taper compatibility: Works with compatible square-taper cranksets.
-
Complete setup: Cups are included with the cartridge.
-
Reliable everyday performance: Suitable for recreational and general cycling applications.
Best Suited For
Ideal for MTB riders, commuters, hybrid-bike riders, recreational cyclists and older bicycles using a compatible square-taper crankset requiring a 122.5mm bottom-bracket spindle.
Important: Spindle length affects the crank position and chainline. Confirm that 122.5mm is the correct length for your crankset before purchasing. The 40–50Nm figure is the specified installation torque, not the spindle length or bearing specification.
