PWKR80-2RS-XL 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 PWKR80-2RS-XL 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 56 kN and C0 80 kN for the PWKR sealed double-row full-complement stud-type track roller; the C/C0 ratio of 0.70 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 10.8 kN at 30 mm stud, equivalent to 1.87 kN of dynamic rating per millimetre — the limiting speed is 1,800 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 0.56 kN per millimetre of rolling-element complement within the 100 mm overall stud length mass is 1.6 kg (1600 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 the designation: no eccentric collar is fitted — the roller centre is fixed by the stud axis, and the 2RS seals close both sides for a greased-for-life unit PWKR is a double-row full-complement stud-type track roller: two cylindrical roller rows run on a heavy-section threaded stud, ready to bolt straight into a bracket X-life status (-XL) indicates the current Schaeffler premium execution at 30 mm bore; the 80 kN C0 rating reflects the improved rolling-contact geometry. Reading the suffix: 2RS is the FAG/INA code for rubbing lip seals at both faces, making the 30 mm-bore unit greased for life. Typical applications include agricultural and textile cam followers, packaging machine timing mechanisms and robotic arm linear axes, where the 80 mm track diameter and 56 kN dynamic rating match the duty. In agricultural and textile cam followers the threaded stud bolts directly to the frame, and in packaging machine timing mechanisms the 1.6 kg mass is part of the rotor inertia calculation. Designers also specify it for robotic arm linear axes, relying on the 100 mm stud length and the published 80 kN static rating. Use a washer under the nut and a flat square bracket face; the stud head alone cannot spread the clamp load of the heavy double-row executions. 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

• Use a washer under the nut and a flat square bracket face; the stud head alone cannot spread the clamp load of the heavy double-row executions.
• The eccentric collar throw is small (typically around 1 mm); it removes clearance, it cannot repair a grossly misplaced bracket.
• The stud must be fully supported and the nut torqued to the catalogue value; a loose follower wears the bracket hole oval and loosens further.