PWTR-50110-2RS 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-50110-2RS model number is decoded

the 110 mm outside diameter runs on the track while the 50 mm bore takes the pin or shaft; the 32 mm overall width spreads the Hertzian contact over the outer ring published ratings C 57.2 kN and C0 78 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.73 is typical for sealed double-row full-complement support roller with integral flanges executions fatigue load limit Pu 9.65 kN at 50 mm bore gives a specific load of 1.14 kN per mm; the limiting speed is 1,600 r/min the 32 mm width carries the load at 1.79 kN per mm of roller complement; section height 30.0 mm between bore and track surface determines the outer-ring bending stiffness mass 1700 g over a 110x32 mm envelope works out to 0.483 g per mm² of projected area — a useful figure when sizing the drive inertia for low-speed cam duty at 50 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 is the maintenance-free heavy support roller: the twin-row full complement is sealed on both sides with NBR contact lips, eliminating relubrication and excluding contamination typical applications include cam mechanisms and indexing drives, material handling lift and lower tracks and sheet-metal forming press feeds this size is commonly specified for cam mechanisms and indexing drives and material handling lift and lower tracks, where the 110 mm track diameter and 50 mm bore fit standard cam and rail geometries in sheet-metal forming press feeds the 110 mm outer ring provides the rolling contact while the inner ring bore simplifies mounting; the 1700 g mass is low enough for rapid indexing cycles the sealed twin-row construction is the heaviest support roller option — verify the drive torque can accelerate the roller at the required cam profile rate the 2RS seals limit relubrication; the grease fill must last the design life of the cam mechanism

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• the 2RS seals limit relubrication; the grease fill must last the design life of the cam mechanism
• the sealed twin-row construction is the heaviest support roller option — verify the drive torque can accelerate the roller at the required cam profile rate
• the sealed outer ring cannot be inspected without destroying the seals; plan replacement on a time or cycle basis rather than condition monitoring