Description
EP-KR30 / EP-KRV30 is the EVER POWER designation for the 30 mm nominal outside-diameter size in the KR/KRV stud type track roller family. It uses a M12x1.5 stud, an outer-ring width of 14 mm and a speed reference of 14,000 rpm. This size is a practical screening point for packaging machines, printing mechanisms, indexing equipment and automation fixtures.
Technical parameters
| Parameter | Value |
|---|---|
| Outside diameter D* | 30 mm |
| Outer-ring width C | 14 mm |
| D1 | 12 mm |
| Stud thread | M12x1.5 |
| Eccentric reference e | 0.3 mm |
| Basic load rating C* | 590 |
| Basic load rating C0* | 450 |
| Speed reference | 14,000 rpm |
| Mass | 87 g |
| IKO reference | CF12 |
| WERB KR legacy | NAKD30 |
| WERB KRV legacy | NAKD30V |
Dimensions and mounting interface
At 30 mm outside diameter, the series moves into an M12×1.5 stud. The B3 dimension also becomes defined in the dimensional table, so replacement checks should include the complete stud/shoulder geometry.
| Dimension | Value |
|---|---|
| G1 | 13 mm |
| B max | 15.2 mm |
| B1 max | 40.2 mm |
| B2 | 25 mm |
| B3 | 6 mm |
| C1 | 0.6 mm |
| rs min | 0.6 mm |
The M12 stud should be evaluated as part of the complete shoulder assembly. B3 is available for this size, so it can be used with B/B1/B2 to compare the existing mounting stack and avoid an axial-position mismatch.
Construction and configuration choices
The family can use a cylindrical or spherical outer surface depending on design. Confirm the mating-track geometry and edge-contact requirement.
When eccentric adjustment is required, use the KRE / KRVE naming as the enquiry reference and confirm the eccentric value and mounting orientation.
If the mechanism needs a particular KRV sealing arrangement, grease specification, clean-production lubricant or washdown resistance, state it as an ordered requirement.
For indexing mechanisms, keep the principal contact radial to the outer ring and verify that the stud is not being used to correct misalignment. Separate guide components should control unwanted side motion.
Because the 30 mm size begins the M12 group, record the stud shoulder and B3 location during removal. Those measurements help distinguish an interface issue from a simple outside-diameter choice.
Size-specific selection perspective
Where EP-KR30 / EP-KRV30 fits
The 30 mm follower marks the move into the M12×1.5 mounting group and introduces a dimensional combination that is useful for indexing, packaging and general automation. B3 is defined in this part of the range, so the stud/shoulder stack can be checked more completely during retrofit work. Measure wrench access and the thickness of the supporting wall before ordering; those details can prevent an otherwise correct follower from seating properly. On cyclic machinery, also look for a polished or tapered track band that would indicate misalignment. For a new installation, use the published speed figure only as a reference point and evaluate the real load, acceleration, lubrication condition and contact geometry together.
Match the M12 mounting stack—including B3 where relevant—before comparing operating duty. Then consider repeated indexing, track impact and lubrication access so the 30 mm choice reflects the real mechanism rather than only an adjacent nominal size.
Replacement and cross-reference identification
IKO CF12 and WERB NAKD30 are useful identifiers for this nominal size. The KRV-family legacy row uses NAKD30V. Use these references to narrow the search, then verify the physical interface and ordered configuration before treating the parts as interchangeable.
| EP reference | IKO reference | WERB legacy | Replacement note |
|---|---|---|---|
| EP-KR30 | CF12 | NAKD30 | Standard KR-family reference; confirm ordered outer-surface and lubrication details. |
| EP-KRV30 | CF12 | NAKD30V | KRV-family reference; confirm sealing/guide configuration for the order. |
| EP-KRE30 / EP-KRVE30 | — | — | Eccentric-family naming when an eccentric arrangement is required; confirm e and the complete interface. |
Selection and installation checks
Confirm D* 30 mm, C 14 mm, M12x1.5 thread, B/B1/B2 geometry and the available shoulder/corner clearance.
Inspect the mating track in the context of high-cycle cam motion. A displaced contact band, ridge or local impact mark can indicate an alignment or track problem that should be corrected before EP-KR30 / EP-KRV30 is installed.
The speed reference is 14,000 rpm. Real operating suitability still depends on load, lubrication, temperature, contamination and cycle pattern.
State KR/KRV/KRE/KRVE preference, outer-surface geometry, lubricant/sealing requirement and any inspection/documentation needs in the RFQ.
Related sizes
Quote EP-KR30 / EP-KRV30 against the real machine interface
Send quantity, existing marking, M12 thread and B/B1/B2/B3 measurements, cycle pattern and a drawing of the mounting member. Mention shock at cam transitions, dust or lubricant constraints so the ordered configuration can be reviewed.
