KRE-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 KRE-30-PPA model number is decoded

the 30 mm outside diameter runs on the track while the 15 mm stud shank takes the pin or shaft; the 40 mm overall width spreads the Hertzian contact over the outer ring published ratings C 6.44 kN and C0 8 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.81 is typical for cam follower with eccentric collar executions fatigue load limit Pu 0.88 kN at 15 mm stud gives a specific load of 0.43 kN per mm; the limiting speed is 4,800 r/min the 40 mm width carries the load at 0.16 kN per mm of roller complement; section height 7.5 mm between stud and track surface determines the outer-ring bending stiffness mass 93 g over a 30x40 mm envelope works out to 0.077 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-speed cam duty at 15 mm stud this size balances load capacity and envelope compactness — a frequent pick for packaging machines and printing press linkages the KRE designation adds an eccentric collar to the KR stud — rotating the collar shifts the 30 mm outer ring radially, letting the builder take up track clearance PPA denotes the crowned running surface: the 30 mm OD is ground to a large radius rather than straight, reducing edge loading on misaligned cam tracks typical applications include sheet-metal forming press feeds, textile machine cam drives and agricultural equipment cam followers this size is commonly specified for sheet-metal forming press feeds and textile machine cam drives, where the 30 mm track diameter and 15 mm stud fit standard cam and rail geometries in agricultural equipment cam followers the 30 mm outer ring provides the rolling contact while the threaded stud simplifies mounting; the 93 g mass is low enough for rapid indexing cycles mark the collar position before disassembly; reassembly without the original setting loses the preload calibration the eccentric collar is a friction fit on the stud — do not hammer it; use the correct spanner to rotate it to the preload setting

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• do not use the eccentric collar to compensate for gross track misalignment; the adjustment range is typically only 0.5–1.0 mm
• mark the collar position before disassembly; reassembly without the original setting loses the preload calibration
• the eccentric collar is a friction fit on the stud — do not hammer it; use the correct spanner to rotate it to the preload setting