KR80-PP bearing: complete specifications & equivalents

Specification table

Source: catalog reference (HR1 2026-09-25) · extracted 2026-09-30

Parameters extracted from the official FAG Rolling Bearings catalogue (HR1 2026-09-25); FAG® is a trademark of Schaeffler Technologies AG & Co. KG, used here for identification only — mpnbase is not an authorized FAG/Schaeffler distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at schaeffler.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the KR80-PP model number is decoded

envelope 30×80×100 mm: the 80 mm outside diameter is the track-running surface — a thick-walled outer ring over a 30 mm stud — and the 100 mm overall stud-and-roller length sets the required bracket clearance the catalogue lists C 38.5 kN and C0 78 kN for the KR stud-type cam follower with needle roller and cage assembly; the C/C0 ratio of 0.49 reflects a rolling-element pack sized for heavy static track loading, and the 25.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 11.2 kN at 30 mm stud, equivalent to 1.28 kN of dynamic rating per millimetre — the limiting speed is 1,300 r/min and, as for HR1 track rollers, no thermal reference speed is published the 30 mm threaded stud clamps directly into the machine bracket; over the roller running width the dynamic rating works out to 0.39 kN per millimetre of rolling-element complement within the 100 mm overall stud length mass is 1.608 kg (1608 g), or 0.20 g per mm² of the 80×100 mm track envelope — inertia that the drive must accelerate on every index of the cam the 30 mm stud shank falls in the small band, the workhorse size for gearbox planetary positions, hydraulic pumps and general cam and linkage duty Reading KR/KRV/KRE: stud-type needle cam followers with PP lip seals on both sides and a 100 mm overall stud length The PP seals make this a maintenance-free unit: the 38.5 kN C rating is slightly below the open execution because the seal recesses shorten the effective roller complement. Typical applications include linear rail and profile track guidance, automatic assembly machine carriages and glass and ceramic line conveyors, where the 80 mm track diameter and 38.5 kN dynamic rating match the duty. In linear rail and profile track guidance the threaded stud bolts directly to the frame, and in automatic assembly machine carriages the 1.608 kg mass is part of the rotor inertia calculation. Designers also specify it for glass and ceramic line conveyors, relying on the 100 mm stud length and the published 78 kN static rating. Full-complement followers trade speed for static capacity — apply the lower limiting speed and expect higher drive torque than a caged KR. The eccentric collar throw is small (typically around 1 mm); it removes clearance, it cannot repair a grossly misplaced bracket.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Full-complement followers trade speed for static capacity — apply the lower limiting speed and expect higher drive torque than a caged KR.
• The eccentric collar throw is small (typically around 1 mm); it removes clearance, it cannot repair a grossly misplaced bracket.
• Never hammer the stud or use the hex socket as a press point during mounting; thread or socket damage renders the 100 mm stud unusable.