Cam Follower Bearings for Machine Tools and CNC Equipment
cam follower for machine tool guide rail / stud type cam follower CNC
Machine tools use cam followers where a roller has to follow a defined rail or cam while the stud fixes directly into the machine structure. Typical positions include auxiliary guide tracks, indexing mechanisms, automatic tool handling and compact transfer modules. In these areas the important questions are not only nominal load; the roller envelope, stud support, track alignment and repeatability of the mechanism all matter.
EP-KR22, EP-KR30, EP-KR35 and EP-KR40 are useful mid-range references when their dimensions match the existing machine. Choose from the measured interface first, then confirm the actual duty, lubrication access and running-surface profile before ordering.
Typical Mechanisms
Guide and Cam Tracks
Rolling guidance on a machined rail or cam path where the contact band and alignment can be inspected.
Turret and Indexing Mechanisms
Stud-mounted followers in indexing systems where repeatable position depends on the cam, track and mounting rigidity.
Automatic Tool Handling
Tool-change and auxiliary transfer mechanisms that need a compact roller with a directly mounted stud.
Machine Fixtures and Auxiliary Slides
Fixture, inspection and secondary slide mechanisms where a defined envelope and service access are important.
What to Check Before Selecting
| Selection check | Why it matters |
|---|---|
| Roller outside diameter and width | These dimensions set the contact envelope and determine how much of the track is engaged. |
| Stud thread and mounting face | The thread has to fit the machine and the shoulder needs rigid support so the stud is not pulled out of alignment. |
| Track alignment and surface condition | Edge polishing, local wear or a grooved rail can point to an alignment problem that a new bearing alone will not correct. |
| Cycle pattern and lubrication access | Indexing, reversal and limited service access affect how the follower should be lubricated and inspected. |
Recommended Size References
Use EP-KR22 / EP-KR30 / EP-KR35 / EP-KR40 as size references for comparison with a machine drawing or the removed part. They are not automatic replacements; verify D, C, stud diameter, thread and the required outer-ring profile on the product page.
EP-KR22 Cam Follower Bearing | CF10 Metric Stud Type
EP-KR22 stud type cam follower bearing with 22 mm outside diameter, M10 x 1.25 metric stud thread and CF10 cross-reference designation.
View specificationsEP-KR30 Cam Follower Bearing | CF12 Cross Reference | M12 Stud
EP-KR30 stud type cam follower bearing with 30 mm outside diameter, M12 x 1.5 metric stud thread and CF12 cross-reference designation.
View specificationsEP-KR35 Stud Type Cam Follower | CF16 Cross Reference
EP-KR35 stud type cam follower bearing with 35 mm outside diameter, M16 x 1.5 metric stud thread and CF16 cross-reference designation.
View specificationsEP-KR40 Cam Follower Bearing | CF18 Cross Reference | M18 Thread
EP-KR40 stud type cam follower bearing with 40 mm outside diameter, M18 x 1.5 metric stud thread and CF18 cross-reference designation.
View specificationsIntegration and Service in Machine Tools
Before installation, inspect the track as carefully as the follower. A narrow wear band on one side of the old outer ring usually deserves an alignment check. Confirm that the stud seat is square, the mounting face is clean and the roller contacts the intended portion of the cam or guide.
If the machine has a defined clearance, preload, seal, grease or material requirement, include that requirement in the RFQ. Those details are execution-specific and should not be inferred from the KR or CF size code alone.
Application FAQ
Which sizes are useful starting points for CNC and machine-tool mechanisms?
EP-KR22, EP-KR30, EP-KR35 and EP-KR40 cover a practical mid-range of roller and stud sizes, but the actual machine dimensions decide the final model.
Can I order from a CF reference alone?
Use the CF reference to find a candidate row, then compare the roller diameter, width, stud thread and running-surface profile with the machine before ordering.
Discuss this application with EVER POWER
Send the existing model, measured roller diameter and stud thread, quantity, track details and operating notes for a quotation review.