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Stud-type track roller (cam follower) built for heavy radial loads on flat tracks, cams, and guide rails. The thick-walled, crowned outer ring rolls directly against the running surface while a solid threaded stud replaces the conventional inner ring for rigid, bolt-down mounting. Sealed on both sides and relubricatable through the stud, the KR80-PP keeps grease in and contamination out in demanding material-handling and conveyor duty. A reliable replacement support roller for Virtus Equipment and ZERMA America machinery wherever a KR80-PP cam follower is specified.
The KR80-PP Support Roller is a stud-type track roller, commonly known as a cam follower, designed to ride smoothly over flat surfaces, cam profiles, and guide tracks while carrying substantial radial load. Instead of a bored inner ring, it uses a solid threaded steel stud, so the unit bolts directly to your mounting fixture and locks in place with a single outer nut. The thick-walled outer ring carries a crowned running surface that concentrates contact at the center of the track, reducing edge stress and helping the roller track true under load. Sealed on both faces and greaseable through the stud, it arrives ready to mount and ready to run in conveyor systems, feed mechanisms, and other guided-motion applications across Virtus Equipment and ZERMA America equipment.
| Weight | 4.5 lbs |
|---|---|
| Dimensions | 4 × 4 × 5 in |
Technical Specifications:
SKU: 80040286
Type: Stud-type track roller (cam follower)
Outer Ring Diameter: 80 mm
Roller Width: 35 mm
Stud Diameter: 30 mm
Running Surface: Crowned
Internal Design: Needle roller and cage
Sealing: Sealed both sides, relubricatable through the stud
Dynamic Radial Load Capacity: 8,900 lbf
Static Radial Load Capacity: 17,300 lbf
Recommended Mounting Torque: 220 Nm on the outer hex nut
Installation Note: Hold the inner stud socket steady with a key and tighten the outer hex nut to the recommended torque. Never apply tightening torque through the inner socket against the machine wall.
Key Features:
Stud-Type Mounting: Solid threaded stud replaces the inner ring, letting the roller bolt directly to a fixture and lock down with one nut
Thick-Walled Crowned Outer Ring: Rolls directly on tracks and cams while absorbing heavy radial loads, with a crowned profile that keeps contact centered and tracking true
Needle Roller Design: Needle-and-cage assembly delivers high load capacity in a compact envelope
Sealed Both Sides: Integral lip seals retain grease and shield the needle bearing from dust, chips, and debris
Relubrication Through The Stud: Internal channels let you re-grease the bearing directly through the stud core without removing the unit
Ready To Mount: Supplied pre-greased and sealed for fast, low-fuss installation
Applications: Suited to conveyor systems, cam drives, feed and guide mechanisms, and other guided-motion assemblies where a roller must carry heavy radial load while running along a track or cam. A direct-fit support roller for Virtus Equipment and ZERMA America machines specifying a KR80-PP cam follower.
Compatibility: Virtus Equipment and ZERMA America machinery specifying a KR80-PP stud-type track roller. If you are unsure whether this is the correct support roller for your machine, contact us with your model and serial number and we will confirm the fit.
