KR-26-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 KR-26-PPA model number is decoded

the 26 mm outside diameter runs on the track while the 10 mm stud shank takes the pin or shaft; the 36 mm overall width spreads the Hertzian contact over the outer ring published ratings C 4.84 kN and C0 6 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 needle roller and cage executions fatigue load limit Pu 0.655 kN at 10 mm stud gives a specific load of 0.48 kN per mm; the limiting speed is 5,300 r/min the 36 mm width carries the load at 0.13 kN per mm of roller complement; section height 8.0 mm between stud and track surface determines the outer-ring bending stiffness mass 57 g over a 26x36 mm envelope works out to 0.061 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-high-speed cam duty with a 10 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 the PPA suffix: crowned outer ring — the track contact is barrel-shaped to tolerate angular misalignment between the roller axis and the track typical applications include glass processing line conveyors, linear guide and track systems and robotic arm track guidance this size is commonly specified for glass processing line conveyors and linear guide and track systems, where the 26 mm track diameter and 10 mm stud fit standard cam and rail geometries in robotic arm track guidance the 26 mm outer ring provides the rolling contact while the threaded stud simplifies mounting; the 57 g mass is low enough for rapid indexing cycles the open design has no integral sealing; in dusty environments contamination enters directly between the needle rollers and the raceway the stud shank must be fully supported by the bracket; a cantilevered stud bends under load and misaligns the roller

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 open design has no integral sealing; in dusty environments contamination enters directly between the needle rollers and the raceway
• the single-row needle complement is the lightest cam follower option; do not overload it beyond the printed C rating