NA2210-2RSR bearing: complete specifications & equivalents

Specification table

Source: catalog reference (HR1 2026-09-25) · extracted 2026-09-30

Parameters extracted from the official FAG Rolling Bearings catalogue (HR1 2026-09-25); FAG® is a trademark of Schaeffler Technologies AG & Co. KG, used here for identification only — mpnbase is not an authorized FAG/Schaeffler distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at schaeffler.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 NA2210-2RSR model number is decoded

envelope 50×90×22.7 mm: the 90 mm outside diameter is the track-running surface — a thick-walled outer ring over a 50 mm bore — and the 22.7 mm width sets the contact width on the mating track the catalogue lists C 26 kN and C0 44 kN for the NA22 sealed yoke-type track roller with inner ring; the C/C0 ratio of 0.59 reflects a rolling-element pack sized for heavy static track loading, and the 20.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 5.7 kN at 50 mm bore, equivalent to 0.52 kN of dynamic rating per millimetre — the limiting speed is 650 r/min and, as for HR1 track rollers, no thermal reference speed is published the 50 mm bore takes the mounting pin or shaft; across the 22.7 mm contact width the dynamic rating works out to 1.15 kN per millimetre of rolling-element complement mass is 690 g, or 0.34 g per mm² of the 90×22.7 mm track envelope — inertia that the drive must accelerate on every index of the cam at 50 mm pin bore this is a mainstream industrial size — conveyor drives, winches and medium gearboxes use the 22.7 mm width as a standard mounting space The inner ring means no hard journal is required — machine the pin to normal tolerance, fit the sealed roller, and forget relubrication for the design life Seal drag is part of the torque budget at small sizes, and running above the limiting speed overheats the lips and destroys the grease fill rather than merely shortening life With 2RSR seals the 690 g roller is effectively sealed for life — no relubrication path is provided and none is needed over the design life. Typical applications include woodworking machine feed tracks, cam drives and indexing tables and packaging machine timing mechanisms, where the 90 mm track diameter and 26 kN dynamic rating match the duty. In woodworking machine feed tracks the unit fits a compact 50 mm seat, and in cam drives and indexing tables the 690 g mass keeps follower kinetics light. Designers also specify it for packaging machine timing mechanisms, relying on the 22.7 mm width and the published 44 kN static rating. Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam. Full-complement NATV/NUTR/PWTR rollers make heat and flat-spot easily — slow continuous rotation is fine, stationary load on a turning track is not.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.
• Full-complement NATV/NUTR/PWTR rollers make heat and flat-spot easily — slow continuous rotation is fine, stationary load on a turning track is not.
• Flangeless STO/RSTO/RNA22/NA22 rollers need external axial location; circlips or shoulders must control end float or the roller walks off the track.