PWTR50-2RS-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 PWTR50-2RS-XL model number is decoded

envelope 50×90×32 mm: the 90 mm outside diameter is the track-running surface — a thick-walled outer ring over a 50 mm bore — and the 32 mm width sets the contact width on the mating track the catalogue lists C 46 kN and C0 67 kN for the PWTR sealed double-row full-complement yoke-type track roller; the C/C0 ratio of 0.69 reflects a rolling-element pack sized for heavy static track loading, and the 20.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 8.7 kN at 50 mm bore, equivalent to 0.92 kN of dynamic rating per millimetre — the limiting speed is 1,100 r/min and, as for HR1 track rollers, no thermal reference speed is published the 50 mm bore takes the mounting pin or shaft; across the 32 mm contact width the dynamic rating works out to 1.44 kN per millimetre of rolling-element complement mass is 950 g, or 0.33 g per mm² of the 90×32 mm track envelope — inertia that the drive must accelerate on every index of the cam the 50 mm pin bore places this bearing in the medium band, where the 90 mm envelope already carries ratings in the tens of kilonewtons At 950 g the double-row roller has substantial inertia; the cam drive must accelerate that mass, and a misaligned track concentrates load onto one row The 2RS seals make the unit greased for life: use it where wash-down, dust or lack of access rules out relubrication X-life status (-XL) indicates the current Schaeffler premium execution at 50 mm bore; the 67 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 50 mm-bore unit greased for life. Typical applications include glass and ceramic line conveyors, linear rail and profile track guidance and printing press sheet-transfer grippers, where the 90 mm track diameter and 46 kN dynamic rating match the duty. In glass and ceramic line conveyors the unit fits a compact 50 mm seat, and in linear rail and profile track guidance the 950 g mass keeps follower kinetics light. Designers also specify it for printing press sheet-transfer grippers, relying on the 32 mm width and the published 67 kN static rating. Flangeless STO/RSTO/RNA22/NA22 rollers need external axial location; circlips or shoulders must control end float or the roller walks off the track. Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Flangeless STO/RSTO/RNA22/NA22 rollers need external axial location; circlips or shoulders must control end float or the roller walks off the track.
• Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.
• Full-complement NATV/NUTR/PWTR rollers make heat and flat-spot easily — slow continuous rotation is fine, stationary load on a turning track is not.