Cam Follower Bearings for Printing Presses and Packaging Machinery
cam follower printing press / track roller packaging machine
Printing, packaging and converting machines use cams to coordinate feeding, folding, sealing, registration, indexing and transfer functions. These mechanisms often reverse and accelerate repeatedly, and long frames or changeover assemblies can introduce alignment errors that are not obvious while the machine is stopped.
EP-KR30, EP-KR35, EP-KR40 and EP-KR47 are useful medium-size references when their dimensions match the machine. The KR/KRV specification notes that the outer running surface can be cylindrical or spherical depending on design. Match the actual profile on the machine rather than assuming a profile from the family code alone.
Typical Mechanisms
Rotary Cam Drives
Rolling followers in cam systems that coordinate repeated motion through a machine cycle.
Folding and Forming Stations
Cam-driven motion in packaging modules where accurate timing and consistent track contact are important.
Feeder and Registration Mechanisms
Indexing and register functions that cycle repeatedly and may be sensitive to track wear or mounting movement.
Printing and Converting Transfer
Guided transfer mechanisms around presses, converting lines and packaging machinery.
What to Check Before Selecting
| Selection check | Why it matters |
|---|---|
| Cam profile and contact width | Narrow or worn tracks can concentrate contact near one edge of the outer ring. |
| Cycle and reversal pattern | Repeated acceleration and reversal make consistent lubrication and a rigid stud seat important. |
| Outer-ring running-surface profile | Cylindrical or spherical surfaces should be specified to match the machine design. |
| Noise, vibration and track condition | Track finish, alignment and looseness can dominate the behaviour of the mechanism even when the bearing size is correct. |
Recommended Size References
EP-KR30 / EP-KR35 / EP-KR40 / EP-KR47 are useful model references for medium-size printing and packaging mechanisms. Confirm D, C, thread and the required running-surface profile before using the cross-reference as an ordering decision.
EP-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 specificationsEP-KR47 Cam Follower Bearing | CF20 Cross Reference
EP-KR47 stud type cam follower bearing with 47 mm outside diameter, M20 x 1.5 metric stud thread and CF20 cross-reference designation.
View specificationsCam Profile, Changeover and Service Checks
Inspect the contact pattern on the removed follower. A narrow or off-centre polish band can indicate a cam-alignment issue, track wear or frame movement. Correcting only the bearing may not remove the cause of the uneven contact.
If the machine requires a spherical running surface to accommodate its geometry, state that profile explicitly in the RFQ. The catalogue allows cylindrical or spherical outer surfaces depending on design, but it does not provide a universal misalignment angle that should be assumed for every execution.
Application FAQ
Should I choose KR or KRV from the application name alone?
No. Confirm the actual dimensions and running-surface profile required by the machine. The supplied specification notes that cylindrical or spherical surfaces depend on design.
Which sizes are useful starting points for packaging machinery?
EP-KR30, EP-KR35, EP-KR40 and EP-KR47 cover a useful medium-size range. Use the machine drawing or measured follower to decide the final size.
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.