Description
Product Description
KR13 cam follower bearing
EP-KR13 stud type cam follower bearing with 13 mm outside diameter, M5 x 0.8 metric stud thread and CF5 cross-reference designation.
EP-KR13 is the smallest outside-diameter row in this KR/KRV group. Its 13 mm roller, 9 mm roller width and M5 x 0.8 stud make it useful to check first when the available cam-follower envelope is especially tight.
The size row also lists a 23 mm B1 maximum length and a 16 g mass. Those compact dimensions matter during replacement because a larger follower may clear the track yet still interfere with a bracket, nut or nearby sensor.
EP-KR13 is listed with D = 13 mm, C = 9 mm, stud diameter 5 mm and M5 x 0.8 thread. The legacy WERB references shown for this row are NAKD13 and NAKD13V.
Key Specifications
EP-KR13 uses the M5 x 0.8 stud interface shown above. Its C and C0 entries remain in the rating table without an added load unit because that unit is not printed in the project size table.
Full Dimension Table
Use the drawing for EP-KR13 to locate D, C, the stud diameter, thread and axial lengths before measuring the removed part. Those interfaces are the primary replacement checks; the cross-reference code should agree with the dimensions rather than override them.
The running-surface note for EP-KR13 allows cylindrical or spherical execution depending on design. Confirm which surface profile the machine requires before choosing between the KR and KRV routes.
| Model | D* (mm) | C (mm) | d1 stud (mm) | Thread | G1 (mm) | B max (mm) | B1 max (mm) | B2 (mm) | B3 (mm) | C1 (mm) | rs min (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| EP-KR13 | 13 | 9 | 5 | M5 x 0.8 | 7 | 10 | 23 | 13 | — | 0.5 | 0.3 |
Rating and Cross-Reference Data
| Model | Eccentric e (mm)* | Dynamic C** | Static C0** | Limit speed (rpm) | Mass (g) | WERB old | WERB V old | IKO reference |
|---|---|---|---|---|---|---|---|---|
| EP-KR13 | 0.25 | 280 | 180 | 29000 | 16 | NAKD13 | NAKD13V | CF5 |
Eccentric value e = 0.25 mm belongs to the related KRE/KRVE execution for EP-KR13. The C/C0 columns are reproduced without a unit because none is printed in the table; confirm the unit convention before calculation.
Selection and Replacement Notes
Use EP-KR13 and CF5 to locate the candidate row, then verify the dimensions that matter on this machine. For this size, thread M5 x 0.8, roller diameter and roller width should agree with the removed follower or drawing before running-surface and lubrication details are reviewed.
Inspect the contact band while EP-KR13 is still in the mechanism if access allows. A centred, even band supports the size check; edge polishing or grooving is a reason to examine the rail, bracket and stud alignment instead of assuming a new follower alone will resolve the wear.
Compact Envelope and M5 Stud Check
Start the KR13 review at the mounting hole and stud thread rather than at the CF5 marking alone. A measured M5 x 0.8 thread, 5 mm stud diameter and 13 mm running diameter form a much stronger identification set than any single code. The 9 mm C dimension then confirms how much roller width the cam or rail has to support.
KR16 is the next diameter row, but it moves to a 16 mm roller and M6 x 1 stud while its C dimension becomes 11 mm. That step is important on compact fixtures: a three-millimetre increase at the roller and a different threaded interface can rule out an apparently similar part before the machine is dismantled further.
The rating table lists a 29,000 rpm limit-speed value for KR13 and an eccentric value e of 0.25 mm for the related KRE/KRVE execution. Treat those entries as selection references, not as permission to run at a particular duty. Actual load, lubrication, track condition and mounting stiffness still have to be reviewed for the machine.
For a replacement enquiry, a close side photograph is particularly useful at this size because it can show the nut arrangement, the available axial space and whether the outer ring has been running centrally on the track. Pair the photo with D, C and thread measurements so the small envelope can be checked without relying on visual scale.
Applications for EP-KR13
Industrial robots & compact automation
Small cam paths, transfer mechanisms and fixture motion where a compact stud-mounted follower fits the available envelope.
Semiconductor & electronics equipment
Wafer, inspection and precision handling mechanisms where compact geometry and controlled lubrication access matter.
Machine-tool auxiliary mechanisms
Compact indexing, guide and tool-handling functions where the follower interface must match a defined machine drawing.
Packaging and labelling machinery
Light cam-driven feed, timing and indexing stations with frequent cycles.
Inspection and indexing equipment
Repeatable cam or track motion in gauges, test fixtures and small indexing assemblies.
Linear track and transfer modules
Stud-mounted rolling contact along a rail where track alignment and contact width can be inspected.
For EP-KR13, the application cards point to compact mechanisms where packaging space is often as important as the industry name. Use them to frame the enquiry, then confirm the 13 mm roller envelope, M5 mounting thread, contact path and lubrication access on the actual machine.
Related Products and Nearby Sizes
Compare EP-KR13 with EP-KR16 and EP-KR19 only after recording the small mounting interface. The neighboring cards make the diameter and thread steps visible, which helps prevent a larger compact-series follower from being selected just because the housings look alike.
EP-KR13 Cam Follower Bearing | CF5 Cross Reference | Stud Type
EP-KR13 stud type cam follower bearing with 13 mm outside diameter, M5 x 0.8 metric stud thread and CF5 cross-reference designation.
View specificationsEP-KR16 Cam Follower Bearing | CF6 Cross Reference | Needle Roller
EP-KR16 stud type cam follower bearing with 16 mm outside diameter, M6 x 1 metric stud thread and CF6 cross-reference designation.
View specificationsEP-KR19 Stud Type Cam Follower | CF8 Cross Reference
EP-KR19 stud type cam follower bearing with 19 mm outside diameter, M8 x 1.25 metric stud thread and CF8 cross-reference designation.
View specificationsFAQ
What IKO reference is shown for EP-KR13?
The cross-reference table shows CF5 on the same size row as EP-KR13. Use that designation as a cross-reference search aid and verify D, C, stud thread, running-surface profile and any suffix-specific execution before replacement.
What thread does EP-KR13 use?
The listed stud thread for EP-KR13 is M5 x 0.8.
What is the related KRV or eccentric designation?
The paired KRV designation is EP-KRV13. If the machine is designed for eccentric adjustment, the naming convention for the corresponding eccentric executions is EP-KRE13 / EP-KRVE13; the table lists e = 0.25 mm for the size row.
What information should I send for a quote?
For an EP-KR13 enquiry, send the CF5 or existing marking if visible, the measured 13 mm roller diameter, 9 mm roller width, M5 x 0.8 thread confirmation, quantity, a side photo and a short note describing the cam or rail.
Get a Quote for EP-KR13
For EP-KR13 replacement review, include a close side photo and the M5 x 0.8 thread measurement with D and C. Those details are especially useful when the original marking is partly worn or the follower is difficult to scale from a general machine photo.
