KRV-30-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-30-PPA model number is decoded

the 30 mm outside diameter runs on the track while the 12 mm stud shank takes the pin or shaft; the 40 mm overall width spreads the Hertzian contact over the outer ring published ratings C 8.97 kN and C0 14.6 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.61 is typical for full-complement cam follower with needle rollers executions fatigue load limit Pu 1.66 kN at 12 mm stud gives a specific load of 0.75 kN per mm; the limiting speed is 3,200 r/min the 40 mm width carries the load at 0.22 kN per mm of roller complement; section height 9.0 mm between stud and track surface determines the outer-ring bending stiffness mass 91 g over a 30x40 mm envelope works out to 0.076 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-speed cam duty the 12 mm stud shank puts this in the small-to-medium transition where the roller complement is still needle-type but the outer ring is thick enough for moderate shock loads KRV denotes the full-complement cam follower: no cage, the maximum number of needle rollers for the 30 mm envelope, raising C0 to 14.6 kN at the cost of the 3200 r/min speed limit the PPA suffix specifies a crowned (radius) outer-ring running surface instead of the standard cylindrical profile — the crown distributes edge stress when the track is not perfectly aligned 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 30 mm track diameter and 12 mm stud fit standard cam and rail geometries in packaging machine timing cams the 30 mm outer ring provides the rolling contact while the threaded stud simplifies mounting; the 91 g mass is low enough for rapid indexing cycles full-complement needle rollers have no cage to separate them — momentary unloading can let rollers skew and jam in the track the higher static capacity of the full complement does not raise the fatigue life; the dynamic C rating still limits the L10 life

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• the heavy roller pack and full complement make this the highest-inertia cam follower; verify the drive can accelerate the mass at the required cam rate
• full-complement needle rollers have no cage to separate them — momentary unloading can let rollers skew and jam in the track
• the higher static capacity of the full complement does not raise the fatigue life; the dynamic C rating still limits the L10 life