Description
Product Description
KR30 cam follower stud type
EP-KR30 stud type cam follower bearing with 30 mm outside diameter, M12 x 1.5 metric stud thread and CF12 cross-reference designation.
EP-KR30 is the first 30 mm running-diameter row in the table and uses an M12 x 1.5 stud. Its 14 mm roller width and CF12 reference make it a common search target, but the nearly adjacent KR32 row uses the same stud and axial dimensions.
The size row lists B1 max = 40.2 mm, B2 = 25 mm and B3 = 6 mm, with an 87 g mass. These measurements can support identification when a buyer has the machine drawing but the outer-ring marking is no longer legible.
EP-KR30 is listed with D = 30 mm, C = 14 mm, stud diameter 12 mm and M12 x 1.5 thread. The legacy WERB references shown for this row are NAKD30 and NAKD30V.
Key Specifications
EP-KR30 uses the M12 x 1.5 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-KR30 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-KR30 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-KR30 | 30 | 14 | 12 | M12 x 1.5 | 13 | 15.2 | 40.2 | 25 | 6 | 0.6 | 0.6 |
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-KR30 | 0.3 | 590 | 450 | 14000 | 87 | NAKD30 | NAKD30V | CF12 |
Eccentric value e = 0.3 mm belongs to the related KRE/KRVE execution for EP-KR30. 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-KR30 and CF12 to locate the candidate row, then verify the dimensions that matter on this machine. For this size, thread M12 x 1.5, 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-KR30 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.
KR30 Versus KR32 on an M12 Stud
KR30 and KR32 both use the 12 mm stud diameter, M12 x 1.5 thread, C = 14 mm and the same listed axial dimensions. Their principal size distinction is D: 30 mm for KR30 and 32 mm for KR32. Measure the outer ring instead of assuming the shared M12 interface identifies the roller size.
The IKO references provide another clue, with CF12 shown on the KR30 row and CF12-1 on the KR32 row. A suffix can help during a cross-reference search, but a two-millimetre difference at the running diameter can materially change the contact geometry. The caliper measurement remains the safer confirmation.
For KR30, the rating table prints C = 590 and C0 = 450 without a stated unit, and it lists 14,000 rpm as limit speed. The unit omission is carried through rather than guessed. If those rating values are needed for engineering work, request or confirm the unit convention first.
The eccentric entry is e = 0.30 mm for the related KRE/KRVE execution. In an adjustable cam station, note the stud orientation and how clearance is set before removal. That information helps determine whether the replacement needs the standard KR form or an eccentric version instead of simply matching the outer diameter.
Applications for EP-KR30
Machine tools & CNC
Guide tracks, indexing mechanisms and auxiliary slides that use a stud-mounted roller against a defined cam or rail.
Industrial automation
Robot fixtures, transfer units and automated mechanisms where compact mounting and repeated cam motion are common.
Packaging machinery
Feeding, folding and indexing functions driven by cams or profiled tracks.
Conveyor track systems
Guided carriers and transfer mechanisms where the outer ring repeatedly follows a rail.
Precision handling equipment
Inspection, electronics and semiconductor-related mechanisms when the selected size and service conditions match.
Indexing and transfer mechanisms
Rotary or linear indexing assemblies where the stud interface and track geometry must be verified together.
EP-KR30 is often researched for machine-tool, packaging, conveyor and automation mechanisms, but its application fit starts with the 30 mm track diameter and M12 x 1.5 stud. Confirm those two dimensions before comparing duty or industry-specific requirements.
Related Products and Nearby Sizes
Place EP-KR30 and EP-KR32 side by side when the M12 thread is already confirmed. EP-KR26 is also useful as the lower boundary because it remains on M10 and has a smaller 26 mm running diameter.
EP-KR26 Track Roller Bearing | CF10-1 Cross Reference
EP-KR26 stud type cam follower bearing with 26 mm outside diameter, M10 x 1.25 metric stud thread and CF10-1 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-KR32 Cam Follower Needle Roller | CF12-1 Cross Reference
EP-KR32 stud type cam follower bearing with 32 mm outside diameter, M12 x 1.5 metric stud thread and CF12-1 cross-reference designation.
View specificationsFAQ
What IKO reference is shown for EP-KR30?
The cross-reference table shows CF12 on the same size row as EP-KR30. 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-KR30 use?
The listed stud thread for EP-KR30 is M12 x 1.5.
What is the related KRV or eccentric designation?
The paired KRV designation is EP-KRV30. If the machine is designed for eccentric adjustment, the naming convention for the corresponding eccentric executions is EP-KRE30 / EP-KRVE30; the table lists e = 0.3 mm for the size row.
What information should I send for a quote?
For EP-KR30, send the CF12 or existing designation, measured 30 mm D, 14 mm C, M12 x 1.5 thread, quantity, running-surface profile and a track photo. Mention if the machine uses eccentric adjustment so KRE/KRVE can be reviewed separately.
Get a Quote for EP-KR30
For EP-KR30 replacement selection, provide a 30 mm outside-diameter measurement rather than only an M12 thread callout. EP-KR32 shares the same stud thread and many axial dimensions, so the roller diameter is the key separator.
