NUTR-45-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 NUTR-45-A model number is decoded

the 85 mm outside diameter runs on the track while the 45 mm bore takes the pin or shaft; the 32 mm overall width spreads the Hertzian contact over the outer ring published ratings C 58.3 kN and C0 75 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.78 is typical for double-row full-complement support roller, no integral flange executions fatigue load limit Pu 9.3 kN at 45 mm bore gives a specific load of 1.30 kN per mm; the limiting speed is 1,700 r/min the 32 mm width carries the load at 1.82 kN per mm of roller complement; section height 20.0 mm between bore and track surface determines the outer-ring bending stiffness mass 880 g over a 85x32 mm envelope works out to 0.324 g per mm² of projected area — a useful figure when sizing the drive inertia for low-speed cam duty the 45 mm bore places this in the medium band, where cylindrical-roller full-complement designs become available for heavier radial loads NUTR names a double-row full-complement cylindrical roller support roller: two roller sets carry the radial load, giving the highest C 58.3 kN of the 85 mm sizes, but there is no integral flange between the rows the A suffix denotes the improved design: optimised internal geometry and surface finish raise the limiting speed and reduce friction compared with the earlier execution typical applications include paper mill web guide rollers, automatic assembly machine linkages and food processing line track rollers this size is commonly specified for paper mill web guide rollers and automatic assembly machine linkages, where the 85 mm track diameter and 45 mm bore fit standard cam and rail geometries in food processing line track rollers the 85 mm outer ring provides the rolling contact while the inner ring bore simplifies mounting; the 880 g mass is low enough for rapid indexing cycles the heavy section and full complement make this the stiffest support roller — any shaft deflection directly increases edge stress the double-row construction is the widest in the support roller range; verify the track channel width accommodates the full B dimension

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• the two roller rows share the outer ring bending load; a misaligned track concentrates the load on one row and halves the life
• the heavy section and full complement make this the stiffest support roller — any shaft deflection directly increases edge stress
• the double-row construction is the widest in the support roller range; verify the track channel width accommodates the full B dimension