NA-2210-2RS 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 NA-2210-2RS model number is decoded

the 90 mm outside diameter runs on the track while the 50 mm bore takes the pin or shaft; the 23 mm overall width spreads the Hertzian contact over the outer ring published ratings C 28.1 kN and C0 43 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.65 is typical for sealed support roller without flange rings, with inner ring executions fatigue load limit Pu 5.3 kN at 50 mm bore gives a specific load of 0.56 kN per mm; the limiting speed is 1,600 r/min the 23 mm width carries the load at 1.22 kN per mm of roller complement; section height 20.0 mm between bore and track surface determines the outer-ring bending stiffness mass 690 g over a 90x23 mm envelope works out to 0.333 g per mm² of projected area — a useful figure when sizing the drive inertia for low-speed cam duty the 50 mm bore places this in the medium band, where cylindrical-roller full-complement designs become available for heavier radial loads NA 22..2RS names the sealed support roller: contact seals on both sides retain grease and exclude contamination, at the cost of a lower 1600 r/min limiting speed than the open STO size typical applications include automatic assembly machine linkages, food processing line track rollers and printing press roller followers this size is commonly specified for automatic assembly machine linkages and food processing line track rollers, where the 90 mm track diameter and 50 mm bore fit standard cam and rail geometries in printing press roller followers the 90 mm outer ring provides the rolling contact while the inner ring bore simplifies mounting; the 690 g mass is low enough for rapid indexing cycles sealed rollers are greased for life — adding a relubrication fitting is pointless and can force the seals open the contact seals add a small running torque; in low-power cam drives the drag can be significant

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• the 2RS seals limit the maximum speed; exceeding the printed limiting speed overheats the NBR lips and destroys the grease fill
• sealed rollers are greased for life — adding a relubrication fitting is pointless and can force the seals open
• the contact seals add a small running torque; in low-power cam drives the drag can be significant