Description
Product Description
KR47 stud type cam follower
EP-KR47 stud type cam follower bearing with 47 mm outside diameter, M20 x 1.5 metric stud thread and CF20 cross-reference designation.
EP-KR47 uses a 47 mm outside diameter, 24 mm roller width and M20 x 1.5 stud. It shares much of its listed mounting geometry with KR52, which makes the running diameter the essential check within this M20 pair.
B1 max is shown as 66.1 mm, B2 as 40.5 mm and B3 as 9 mm. The row mass is 386 g, giving another reference when comparing a removed follower with a parts record that may list only approximate weight.
EP-KR47 is listed with D = 47 mm, C = 24 mm, stud diameter 20 mm and M20 x 1.5 thread. The legacy WERB references shown for this row are NAKD47 and NAKD47V.
Key Specifications
EP-KR47 uses the M20 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-KR47 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-KR47 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-KR47 | 47 | 24 | 20 | M20 x 1.5 | 21 | 25.6 | 66.1 | 40.5 | 9 | 0.8 | 1.0 |
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-KR47 | 0.35 | 1630 | 1690 | 7000 | 386 | NAKD47 | NAKD47V | CF20 |
Eccentric value e = 0.35 mm belongs to the related KRE/KRVE execution for EP-KR47. 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-KR47 and CF20 to locate the candidate row, then verify the dimensions that matter on this machine. For this size, thread M20 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-KR47 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.
First M20 Row: Separate KR47 from KR52
KR47 and KR52 both show a 20 mm stud, M20 x 1.5 thread, C = 24 mm and the same principal axial dimensions. The running diameter is what separates the pair: 47 mm for KR47 and 52 mm for KR52. Measure D directly whenever a CF20/CF20-1 suffix is unclear.
CF20 is the IKO reference on the KR47 line, while CF20-1 belongs to the 52 mm row. The suffix is helpful for search and purchasing records, but it should agree with the measured outer ring. A five-millimetre diameter difference can change the cam geometry enough that visual similarity is not a reliable guide.
The KR47 row lists the same C/C0 numbers and 7,000 rpm limit-speed value as KR52. Since the C/C0 unit is absent from the table, this website does not assign one. For load or life calculations, ask for the unit convention and then use the machine’s actual radial load and duty assumptions.
In conveyor or converting equipment, inspect the rail width and the way the stud is supported. A 24 mm wide roller can show a narrow wear band if the rail is undersized or the bracket is skewed. Including that wear pattern in an enquiry helps avoid treating a track problem as a bearing-only issue.
Applications for EP-KR47
Conveyor & material handling
Track-guided carriers, transfer stations and repeated material movement with accessible rail inspection.
Printing & packaging machinery
Cam-driven timing, folding, registration and transfer functions with medium-size follower envelopes.
Machine tools & production equipment
Indexing, guide and fixture mechanisms where rigid stud support and a clean contact band are important.
Indexing tables & cam drives
Repeated cam contact in machinery that cycles between defined positions.
Automation transfer systems
Larger transfer and fixture mechanisms that use stud-mounted rollers on a track.
General industrial track rollers
Rail-following mechanisms where D, C, thread and outer-surface profile are checked from a drawing or removed part.
EP-KR47 is the smaller M20 x 1.5 option in this table. Before applying the conveyor, printing or indexing examples, verify that the machine track is built around a 47 mm running diameter rather than the 52 mm companion row.
Related Products and Nearby Sizes
Keep EP-KR52 next to EP-KR47 during identification because the two rows share the M20 thread and 24 mm roller width. EP-KR40 is the useful lower comparison where the stud changes back to M18.
EP-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 specificationsEP-KR52 Stud Type Track Roller | CF20-1 Cross Reference
EP-KR52 stud type cam follower bearing with 52 mm outside diameter, M20 x 1.5 metric stud thread and CF20-1 cross-reference designation.
View specificationsFAQ
What IKO reference is shown for EP-KR47?
The cross-reference table shows CF20 on the same size row as EP-KR47. 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-KR47 use?
The listed stud thread for EP-KR47 is M20 x 1.5.
What is the related KRV or eccentric designation?
The paired KRV designation is EP-KRV47. If the machine is designed for eccentric adjustment, the naming convention for the corresponding eccentric executions is EP-KRE47 / EP-KRVE47; the table lists e = 0.35 mm for the size row.
What information should I send for a quote?
For EP-KR47, send the CF20 or old designation, confirmed 47 mm D, 24 mm C, M20 x 1.5 thread, quantity, rail width and a photo of the wear band. State if EP-KR52 is also under consideration.
Get a Quote for EP-KR47
An EP-KR47 RFQ should show the 47 mm outside diameter explicitly. The M20 x 1.5 thread and 24 mm width are shared with EP-KR52, so D is the quickest way to keep the same-thread pair separated.
