KRV-19-PPA 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 KRV-19-PPA 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 5.28 kN and C0 8 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.66 is typical for full-complement cam follower with needle rollers executions fatigue load limit Pu 0.88 kN at 8 mm stud gives a specific load of 0.66 kN per mm; the limiting speed is 4,000 r/min the 32 mm width carries the load at 0.17 kN per mm of roller complement; section height 5.5 mm between stud and track surface determines the outer-ring bending stiffness mass 31 g over a 19x32 mm envelope works out to 0.051 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-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 KRV removes the cage to maximise the needle roller count in the 19 mm envelope; the result is the highest static capacity of the stud-type needle cam followers, with a corresponding drop in permissible speed PPA changes the outer-ring profile from cylindrical to crowned; the barrel shape lowers edge stress when the cam track is not perfectly parallel to the roller axis typical applications include agricultural equipment cam followers, packaging machine timing cams and glass processing line conveyors this size is commonly specified for agricultural equipment cam followers and packaging machine timing cams, where the 19 mm track diameter and 8 mm stud fit standard cam and rail geometries in glass processing line conveyors the 19 mm outer ring provides the rolling contact while the threaded stud simplifies mounting; the 31 g mass is low enough for rapid indexing cycles in oscillating applications the rollers can brinell if the stroke is too short to rotate the full complement; ensure the motion profile rotates the rollers through at least one full revolution the full complement is sensitive to contamination — any particle that enters the raceway can jam the roller pack and score the track

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• the absence of a cage increases friction torque; check that the cam drive can overcome the drag at low speed
• in oscillating applications the rollers can brinell if the stroke is too short to rotate the full complement; ensure the motion profile rotates the rollers through at least one full revolution
• the full complement is sensitive to contamination — any particle that enters the raceway can jam the roller pack and score the track