KRE-72-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-72-PPA model number is decoded

the 72 mm outside diameter runs on the track while the 28 mm stud shank takes the pin or shaft; the 80 mm overall width spreads the Hertzian contact over the outer ring published ratings C 26 kN and C0 48 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.54 is typical for cam follower with eccentric collar executions fatigue load limit Pu 6 kN at 28 mm stud gives a specific load of 0.93 kN per mm; the limiting speed is 2,400 r/min the 80 mm width carries the load at 0.33 kN per mm of roller complement; section height 22.0 mm between stud and track surface determines the outer-ring bending stiffness mass 1050 g over a 72x80 mm envelope works out to 0.182 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-speed cam duty at 28 mm stud 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 KRE provides on-machine adjustment: the eccentric collar allows the roller centre to be shifted radially, compensating for track wear or mounting tolerances without re-boring the bracket 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 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 72 mm track diameter and 28 mm stud fit standard cam and rail geometries in sheet-metal forming press feeds the 72 mm outer ring provides the rolling contact while the threaded stud simplifies mounting; the 1050 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