KR-19-PPSKA 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 KR-19-PPSKA model number is decoded

the 19 mm outside diameter runs on the track while the 8 mm stud shank takes the pin or shaft; the 32 mm overall width spreads the Hertzian contact over the outer ring published ratings C 3.47 kN and C0 3.8 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.91 is typical for cam follower with needle roller and cage executions fatigue load limit Pu 0.415 kN at 8 mm stud gives a specific load of 0.43 kN per mm; the limiting speed is 5,600 r/min the 32 mm width carries the load at 0.11 kN per mm of roller complement; section height 5.5 mm between stud and track surface determines the outer-ring bending stiffness mass 29 g over a 19x32 mm envelope works out to 0.048 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-high-speed cam duty with a 8 mm stud shank this is one of the smallest sizes listed; the reduced section height limits the outer-ring bending stiffness, so track alignment must be held closely reading KR: cam follower with caged needle roller complement; the stud is threaded for the hexagonal nut and the outer ring profile is the track contact reading PPSKA: hex recess plus slot — the small KR stud end can be driven by either tool typical applications include conveyor transfer and diverting rollers, woodworking machinery feed rollers and cam mechanisms and indexing drives this size is commonly specified for conveyor transfer and diverting rollers and woodworking machinery feed rollers, where the 19 mm track diameter and 8 mm stud fit standard cam and rail geometries in cam mechanisms and indexing drives the 19 mm outer ring provides the rolling contact while the threaded stud simplifies mounting; the 29 g mass is low enough for rapid indexing cycles the cage-guided needle rollers are not suited to heavy shock — impact loads can crack the cage and release rollers the stud thread must be torqued to the catalogue value; under-torque lets the follower rotate and wear the bracket hole

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• the stud thread must be torqued to the catalogue value; under-torque lets the follower rotate and wear the bracket hole
• the cage-guided needle rollers are not suited to heavy shock — impact loads can crack the cage and release rollers
• the single-row needle complement is the lightest cam follower option; do not overload it beyond the printed C rating