PWTR50110-2RS-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 PWTR50110-2RS-XL model number is decoded

envelope 50×110×32 mm: the 110 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 59 kN and C0 95 kN for the PWTR sealed double-row full-complement yoke-type track roller; the C/C0 ratio of 0.62 reflects a rolling-element pack sized for heavy static track loading, and the 30.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 12.3 kN at 50 mm bore, equivalent to 1.18 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 1.84 kN per millimetre of rolling-element complement mass is 1.69 kg (1690 g), or 0.48 g per mm² of the 110×32 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 110 mm envelope already carries ratings in the tens of kilonewtons No thermal reference speed is published — the 1,100 r/min limiting speed is the design ceiling, set by roller and seal kinematics PWTR is the sealed double-row full-complement yoke roller: two cylindrical roller rows, 2RS contact seals both sides and the profiled (crowned) running surface on the 110 mm outer ring The -XL suffix marks the X-life execution: refined raceway topography and upgraded materials lift the basic ratings versus the non-X-life bearing at the same 50×110×32 mm envelope. With 2RS seals the 1690 g roller is effectively sealed for life — no relubrication path is provided and none is needed over the design life. Typical applications include conveyor transfer and diverting stations, robotic arm linear axes and automotive welding jig rollers, where the 110 mm track diameter and 59 kN dynamic rating match the duty. In conveyor transfer and diverting stations the unit fits a compact 50 mm seat, and in robotic arm linear axes the 1.69 kg mass is part of the rotor inertia calculation. Designers also specify it for automotive welding jig rollers, relying on the 32 mm width and the published 95 kN static rating. Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam. The crowned outer profile tolerates only small skew; a track that departs by more than the catalogue angle still causes edge loading.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.
• The crowned outer profile tolerates only small skew; a track that departs by more than the catalogue angle still causes edge loading.
• The pin or shaft is part of the bearing system: harden it for RSTO/RNA22 positions, and size its deflection because the roller cannot compensate for a bent pin.