PWTR4090-2RS-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 PWTR4090-2RS-XL model number is decoded

envelope 40×90×32 mm: the 90 mm outside diameter is the track-running surface — a thick-walled outer ring over a 40 mm bore — and the 32 mm width sets the contact width on the mating track the catalogue lists C 52 kN and C0 77 kN for the PWTR sealed double-row full-complement yoke-type track roller; the C/C0 ratio of 0.68 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 9.8 kN at 40 mm bore, equivalent to 1.30 kN of dynamic rating per millimetre — the limiting speed is 1,500 r/min and, as for HR1 track rollers, no thermal reference speed is published the 40 mm bore takes the mounting pin or shaft; across the 32 mm contact width the dynamic rating works out to 1.63 kN per millimetre of rolling-element complement mass is 1.129 kg (1129 g), or 0.39 g per mm² of the 90×32 mm track envelope — inertia that the drive must accelerate on every index of the cam 40 mm pin bore marks the medium range: mounting forces and fits become critical, and the 1129 g mass calls for proper induction or press tooling rather than hand fitting At 1129 g the double-row roller has substantial inertia; the cam drive must accelerate that mass, and a misaligned track concentrates load onto one row 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 90 mm outer ring X-life status (-XL) indicates the current Schaeffler premium execution at 40 mm bore; the 77 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 40 mm-bore unit greased for life. Typical applications include packaging machine timing mechanisms, woodworking machine feed tracks and agricultural and textile cam followers, where the 90 mm track diameter and 52 kN dynamic rating match the duty. In packaging machine timing mechanisms the unit fits a compact 40 mm seat, and in woodworking machine feed tracks the 1.129 kg mass is part of the rotor inertia calculation. Designers also specify it for agricultural and textile cam followers, relying on the 32 mm width and the published 77 kN static rating. The crowned outer profile tolerates only small skew; a track that departs by more than the catalogue angle still causes edge loading. 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

• The crowned outer profile tolerates only small skew; a track that departs by more than the catalogue angle still causes edge loading.
• Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.
• 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.