A good choice for a rider or mechanic replacing a compatible 24 x 37 x 7 mm bottom-bracket bearing and seeking a smooth, lightweight hybrid ceramic option.
The CEMA SRC-JC24377DD is a hybrid ceramic bottom bracket bearing designed around the common 24 x 37 x 7 mm bearing format. It combines a SUJ2 steel bearing ring with G5-grade Si3N4 silicon nitride ceramic balls, giving you a smooth-running bearing designed specifically for bicycle applications.
The updated seal design helps protect the bearing internals while supporting consistent operation, and the supplied lubrication is intended to keep the bearing running smoothly. At 20.8 g, it is a neat replacement option when you are refreshing a compatible bottom bracket and want the characteristics of a hybrid ceramic bearing without moving to a full ceramic race and ball assembly.
Before ordering, measure or check the bearing fitted to your bottom bracket: the critical fit is 24 mm internal diameter, 37 mm external diameter and 7 mm width. This bearing is supplied as an individual bearing, so check whether your bottom bracket requires one or two bearings for a complete replacement.
Hybrid ceramic construction
A SUJ2 bearing ring and Si3N4 ceramic balls provide a smooth-running configuration for bottom-bracket use.
G5 ceramic balls
Highly round G5-grade balls are selected to support smooth operation and precise bearing clearance.
Bicycle-specific SRC design
The SRC range is developed for bicycle applications, including bottom brackets, hubs and chain-tensioner pulleys.
Updated seal design
The new seal design helps support durable operation by protecting the bearing during bicycle use.
Compact 24 x 37 x 7 mm format
A precise replacement size for bottom brackets using a 24 mm axle-side diameter, 37 mm outer diameter and 7 mm bearing width.
Low 20.8 g weight
A lightweight individual bearing for riders and mechanics paying attention to rotating component weight.
Individual replacement bearing
Useful when servicing a bearing rather than replacing the entire bottom bracket assembly; confirm whether your system requires one or two.
General
Dimensions & weight
Materials & construction
Compatibility & use
Hybrid ceramic construction
A SUJ2 bearing ring paired with Si3N4 silicon nitride ceramic balls provides a smooth-running bearing configuration with lower torque for bottom-bracket use.
G5 Si3N4 ceramic balls
Highly round G5-grade silicon nitride ceramic balls are selected to support smooth operation and precise bearing clearance.
New seal design
The updated seal design helps support smooth, durable operation in bicycle applications.
Specialised bicycle SRC bearing design
The SRC range is designed specifically for bicycle applications such as bottom brackets, wheel hubs and chain-tensioner pulleys.
