NA-2203-2RS 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-2203-2RS model number is decoded

the 40 mm outside diameter runs on the track while the 17 mm bore takes the pin or shaft; the 16 mm overall width spreads the Hertzian contact over the outer ring published ratings C 9.52 kN and C0 13.2 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.72 is typical for sealed support roller without flange rings, with inner ring executions fatigue load limit Pu 1.6 kN at 17 mm bore gives a specific load of 0.56 kN per mm; the limiting speed is 4,500 r/min the 16 mm width carries the load at 0.59 kN per mm of roller complement; section height 11.5 mm between bore and track surface determines the outer-ring bending stiffness mass 110 g over a 40x16 mm envelope works out to 0.172 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-speed cam duty at 17 mm bore this size balances load capacity and envelope compactness — a frequent pick for packaging machines and printing press linkages the NA 22/..2RS designation combines the NA 22 series envelope with two-side rubbing seals; the 16 mm width accommodates the seal recesses while keeping the 40 mm track contact diameter 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 40 mm track diameter and 17 mm bore fit standard cam and rail geometries in printing press roller followers the 40 mm outer ring provides the rolling contact while the inner ring bore simplifies mounting; the 110 g mass is low enough for rapid indexing cycles the compact envelope and sealed construction make this size sensitive to over-greasing during manufacture — excess grease churns and overheats at speed the 2RS seals limit the maximum speed; exceeding the printed limiting speed overheats the NBR lips and destroys the grease fill

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• NBR seals degrade in contact with certain synthetic lubricants and solvents; verify compatibility before exposing the roller to process chemicals
• the compact envelope and sealed construction make this size sensitive to over-greasing during manufacture — excess grease churns and overheats at speed
• the 2RS seals limit the maximum speed; exceeding the printed limiting speed overheats the NBR lips and destroys the grease fill