PWKRE35-2RS-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 PWKRE35-2RS-XL model number is decoded

envelope 16×35×52 mm: the 35 mm outside diameter is the track-running surface — a thick-walled outer ring over a 16 mm stud — and the 52 mm overall stud-and-roller length sets the required bracket clearance the catalogue lists C 12.6 kN and C0 14.9 kN for the PWKRE sealed double-row full-complement stud-type track roller with eccentric locking collar; the C/C0 ratio of 0.85 reflects a rolling-element pack sized for heavy static track loading, and the 9.5 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 1.79 kN at 16 mm stud, equivalent to 0.79 kN of dynamic rating per millimetre — the limiting speed is 6,000 r/min and, as for HR1 track rollers, no thermal reference speed is published the 16 mm threaded stud clamps directly into the machine bracket; over the roller running width the dynamic rating works out to 0.24 kN per millimetre of rolling-element complement within the 52 mm overall stud length mass is 177 g, or 0.10 g per mm² of the 35×52 mm track envelope — inertia that the drive must accelerate on every index of the cam with a 16 mm stud shank the 52 mm width and 12.6 kN C rating suit high-cycle industrial machinery rather than instrument duty The stud is drilled for relubrication via the lubricating nipple in the head; the limiting speed is 6,000 r/min and no thermal reference speed is given for track rollers The 16 mm stud clamps into the machine frame with its nut and washer while the 35 mm thick-walled, crowned-profile outer ring runs on the cam; overall length is 52 mm -XL means this is an X-life bearing — Schaeffler's upgraded performance level with smoother raceways, so the 12.6 kN C rating and longer nominal life come without an envelope change. The 2RS suffix fits elastomer contact seals on both sides, retaining the life-long grease fill behind the 35 mm outer ring. Typical applications include robotic arm linear axes, agricultural and textile cam followers and conveyor transfer and diverting stations, where the 35 mm track diameter and 12.6 kN dynamic rating match the duty. In robotic arm linear axes the threaded stud bolts directly to the frame, and in agricultural and textile cam followers the 177 g mass keeps follower kinetics light. Designers also specify it for conveyor transfer and diverting stations, relying on the 52 mm stud length and the published 14.9 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. Full-complement followers trade speed for static capacity — apply the lower limiting speed and expect higher drive torque than a caged KR.

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.
• Full-complement followers trade speed for static capacity — apply the lower limiting speed and expect higher drive torque than a caged KR.
• 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.