PWTR-35-2RS bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 15 support rollers / ch. 16 cam followers) · extracted 2026-09-30

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 15 support rollers / ch. 16 cam followers); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.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 PWTR-35-2RS model number is decoded

the 72 mm outside diameter runs on the track while the 35 mm bore takes the pin or shaft; the 29 mm overall width spreads the Hertzian contact over the outer ring published ratings C 35.8 kN and C0 40.5 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.88 is typical for sealed double-row full-complement support roller with integral flanges executions fatigue load limit Pu 5 kN at 35 mm bore gives a specific load of 1.02 kN per mm; the limiting speed is 2,000 r/min the 29 mm width carries the load at 1.23 kN per mm of roller complement; section height 18.5 mm between bore and track surface determines the outer-ring bending stiffness mass 630 g over a 72x29 mm envelope works out to 0.302 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-speed cam duty at 35 mm bore this size crosses into the range where double-row full-complement executions (NUTR/PWTR/NUKR) offer substantially higher C ratings than the single-row needle designs PWTR denotes the sealed double-row full-complement cylindrical roller support roller: integral flanges and 2RS contact seals make it a greased-for-life unit for dirty or inaccessible positions typical applications include textile machine cam drives, agricultural equipment cam followers and packaging machine timing cams this size is commonly specified for textile machine cam drives and agricultural equipment cam followers, where the 72 mm track diameter and 35 mm bore fit standard cam and rail geometries in packaging machine timing cams the 72 mm outer ring provides the rolling contact while the inner ring bore simplifies mounting; the 630 g mass is low enough for rapid indexing cycles the 2RS seals limit relubrication; the grease fill must last the design life of the cam mechanism the sealed outer ring cannot be inspected without destroying the seals; plan replacement on a time or cycle basis rather than condition monitoring

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• the integral flanges and seals add width; verify the track channel accommodates the full B dimension plus flange protrusion
• the 2RS seals limit relubrication; the grease fill must last the design life of the cam mechanism
• sealed full-complement rollers are the heaviest option — check that the drive can accelerate the mass at the required cam rate