NSK CF4 Cam Follower Bearing – 4 mm Stud, 12 mm Roller OD
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The NSK CF4 is a small stud type cam follower bearing designed for smooth rolling motion and reliable performance in compact mechanical applications. Cam followers are commonly used as track rollers where the outer ring runs along a guide surface, cam profile, rail, or machine track.
NSK cam followers are designed with a thick outer ring and hardened stud raceway to help withstand shock loads and provide dependable operation in moving mechanical assemblies. NSK’s catalogue describes cam followers as stud type track rollers available in caged or full-complement styles, with sealed versions available for maintenance-free operation.
Specifications
| Specification | Details |
|---|---|
| Brand | NSK |
| Product Type | Cam Follower / Stud Type Track Roller |
| Part Number | CF4 |
| NSK Equivalent Style | FCJ-12 / FCJB-12 style |
| Stud Diameter | 4 mm |
| Roller Outside Diameter | 12 mm |
| Roller Width | 8 mm |
| Thread Size | M4 × 0.7 |
| Bearing Design | Needle roller cam follower |
| Outer Ring | Cylindrical running surface |
| Application | Track roller, cam guide, automation linkage |
NSK’s cam follower table lists the small M4 stud size as 12 mm outside diameter, 8 mm roller width, 4 mm stud diameter, and M4 × 0.7 thread. Common CF4 cam follower listings also identify CF4 as a 4 × 12 × 8 mm cam follower bearing.
Key Features
- Compact cam follower bearing
- 4 mm stud with M4 × 0.7 thread
- 12 mm roller outside diameter
- Suitable for guide tracks and cam mechanisms
- Smooth rolling operation
- Good for automation, machinery, linkages, and small engineering applications
- Heavy outer ring design for track contact