Description
EP-KR80 / EP-KRV80 is the EVER POWER designation for the 80 mm nominal outside-diameter size in the KR/KRV stud type track roller family. It uses a M30x1.5 stud, an outer-ring width of 35 mm and a speed reference of 5,000 rpm. This size is a practical screening point for large machine-tool mechanisms, heavy cam systems and ground-support/industrial handling equipment.
Technical parameters
| Parameter | Value |
|---|---|
| Outside diameter D* | 80 mm |
| Outer-ring width C | 35 mm |
| D1 | 30 mm |
| Stud thread | M30x1.5 |
| Eccentric reference e | 0.5 mm |
| Basic load rating C* | 2,830 |
| Basic load rating C0* | 3,700 |
| Speed reference | 5,000 rpm |
| Mass | 1550 g |
| IKO reference | CF30 |
| WERB KR legacy | NAKD80 |
| WERB KRV legacy | NAKD80V |
Dimensions and mounting interface
At 80 mm outside diameter the family reaches the M30×1.5 stud group. The 63 mm B2 dimension and 100 mm B1 max envelope require a much more deliberate mounting-space check than the small and medium sizes.
| Dimension | Value |
|---|---|
| G1 | 32 mm |
| B max | 37 mm |
| B1 max | 100 mm |
| B2 | 63 mm |
| B3 | 15 mm |
| C1 | 1 mm |
| rs min | 1 mm |
The M30 stud and long axial envelope require deliberate mounting-space planning. Verify B/B1/B2, support thickness and tool clearance together; a correct thread alone cannot confirm that the follower will seat in the required position.
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.
The M30 follower should be treated as a radial track element in a stiff structural system. If the mechanism generates side force, resolve it through guides or a reviewed arrangement instead of accepting edge contact on the outer ring.
For this M30 option, service access is part of the interface. Confirm that the tightening tool can reach the stud at the installed machine position and that adjacent structures do not obstruct removal.
Size-specific selection perspective
Where EP-KR80 / EP-KRV80 fits
EP-KR80 / EP-KRV80 enters the M30×1.5 group, where mounting space and structural support deserve more attention than on the compact sizes. The long B1/B2 envelope means the machine designer should verify wall thickness, thread engagement and access for tightening before finalizing a layout. In heavy cam or machine-tool mechanisms, inspect the stiffness of both the follower support and the mating track because deflection can alter the contact band. When replacing an older unit, record the outside diameter and axial dimensions rather than relying on the common M30 thread. A large follower should be selected from the real radial duty, speed pattern and contact geometry, not from outside diameter as a proxy for capacity.
Start with the M30 interface and the long B1/B2 envelope because those dimensions often control whether the part can be installed. After physical fit, review structural stiffness, track width, shock and speed pattern for the heavy mechanism.
Replacement and cross-reference identification
IKO CF30 and WERB NAKD80 are useful identifiers for this nominal size. The KRV-family legacy row uses NAKD80V. 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-KR80 | CF30 | NAKD80 | Standard KR-family reference; confirm ordered outer-surface and lubrication details. |
| EP-KRV80 | CF30 | NAKD80V | KRV-family reference; confirm sealing/guide configuration for the order. |
| EP-KRE80 / EP-KRVE80 | — | — | Eccentric-family naming when an eccentric arrangement is required; confirm e and the complete interface. |
Selection and installation checks
Confirm D* 80 mm, C 35 mm, M30x1.5 thread, B/B1/B2 geometry and the available shoulder/corner clearance.
Inspect the mating track in the context of machine-tool or heavy cam motion. A displaced contact band, ridge or local impact mark can indicate an alignment or track problem that should be corrected before EP-KR80 / EP-KRV80 is installed.
The speed reference is 5,000 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-KR80 / EP-KRV80 against the real machine interface
Include the old marking, quantity, M30 thread engagement, B1/B2 envelope, support thickness, track width and the heavy mechanism’s speed/cycle. A drawing showing tightening access and adjacent components is strongly useful for this large size.
