NA-22-6-2RS 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-22-6-2RS model number is decoded

the 19 mm outside diameter runs on the track while the 6 mm bore takes the pin or shaft; the 12 mm overall width spreads the Hertzian contact over the outer ring published ratings C 4.02 kN and C0 3.65 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 1.10 is typical for sealed support roller without flange rings, with inner ring executions fatigue load limit Pu 0.425 kN at 6 mm bore gives a specific load of 0.67 kN per mm; the limiting speed is 7,000 r/min the 12 mm width carries the load at 0.33 kN per mm of roller complement; section height 6.5 mm between bore and track surface determines the outer-ring bending stiffness mass 22 g over a 19x12 mm envelope works out to 0.096 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-high-speed cam duty with a 6 mm bore 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 NA 22..2RS: sealed yoke-type track roller with inner ring — the 2RS suffix means integral contact seals, making it the maintenance-free counterpart of the open STO typical applications include sheet-metal forming press feeds, textile machine cam drives and agricultural equipment cam followers this size is commonly specified for sheet-metal forming press feeds and textile machine cam drives, where the 19 mm track diameter and 6 mm bore fit standard cam and rail geometries in agricultural equipment cam followers the 19 mm outer ring provides the rolling contact while the inner ring bore simplifies mounting; the 22 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

• the contact seals add a small running torque; in low-power cam drives the drag can be significant
• the compact envelope and sealed construction make this size sensitive to over-greasing during manufacture — excess grease churns and overheats at speed
• the seal recesses reduce the effective roller complement width; do not substitute an open STO size without checking the reduced C rating