NUKRE-52-A 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 NUKRE-52-A model number is decoded

the 52 mm outside diameter runs on the track while the 24 mm stud shank takes the pin or shaft; the 66 mm overall width spreads the Hertzian contact over the outer ring published ratings C 29.7 kN and C0 36 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.82 is typical for full-complement cylindrical-roller cam follower with eccentric collar executions fatigue load limit Pu 4.25 kN at 24 mm stud gives a specific load of 1.24 kN per mm; the limiting speed is 3,200 r/min the 66 mm width carries the load at 0.45 kN per mm of roller complement; section height 14.0 mm between stud and track surface determines the outer-ring bending stiffness mass 470 g over a 52x66 mm envelope works out to 0.137 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-speed cam duty the 24 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 the NUKR prefix names a twin-row cylindrical roller cam follower without cage — maximum load capacity on the 52 mm track diameter, suitable for heavy cam and roller-table duty NUKRE combines the twin-row cylindrical roller capacity with an eccentric collar: rotating the collar on the stud shifts the 52 mm roller centre for fine positioning typical applications include packaging machine timing cams, glass processing line conveyors and linear guide and track systems this size is commonly specified for packaging machine timing cams and glass processing line conveyors, where the 52 mm track diameter and 24 mm stud fit standard cam and rail geometries in linear guide and track systems the 52 mm outer ring provides the rolling contact while the threaded stud simplifies mounting; the 470 g mass is low enough for rapid indexing cycles without flange rings the roller needs lateral guidance from the housing shoulders — running without side support lets the roller walk off the track the open design has no integral sealing; in dusty environments contamination enters directly between the needle rollers and the raceway

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• the needle roller complement is sensitive to misalignment; a bent shaft or angled track creates uneven load distribution and early raceway pitting
• without flange rings the roller needs lateral guidance from the housing shoulders — running without side support lets the roller walk off the track
• the open design has no integral sealing; in dusty environments contamination enters directly between the needle rollers and the raceway