NA2201-2RSR 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 NA2201-2RSR model number is decoded

envelope 12×32×13.8 mm: the 32 mm outside diameter is the track-running surface — a thick-walled outer ring over a 12 mm bore — and the 13.8 mm width sets the contact width on the mating track the catalogue lists C 7.5 kN and C0 8.3 kN for the NA22 sealed yoke-type track roller with inner ring; the C/C0 ratio of 0.90 reflects a rolling-element pack sized for heavy static track loading, and the 10.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 1.29 kN at 12 mm bore, equivalent to 0.63 kN of dynamic rating per millimetre — the limiting speed is 4,700 r/min and, as for HR1 track rollers, no thermal reference speed is published the 12 mm bore takes the mounting pin or shaft; across the 13.8 mm contact width the dynamic rating works out to 0.54 kN per millimetre of rolling-element complement mass is 67 g, or 0.15 g per mm² of the 32×13.8 mm track envelope — inertia that the drive must accelerate on every index of the cam at 12 mm pin bore this is one of the smallest HR1 executions — chosen where a 32 mm envelope must carry line-contact loads that no miniature ball bearing could take C 7.5 kN and C0 8.3 kN cover the supported-track bending case; the contact seals set the limiting speed at 4,700 r/min NA22 is the sealed yoke-type track roller with inner ring: 2RSR contact seals on both sides and a 12 mm bore for an ordinary mounting pin 2RSR means two side contact seals: the sealed roller excludes contamination without a separate shield arrangement, at the published limiting speed of 4,700 r/min. Typical applications include agricultural and textile cam followers, packaging machine timing mechanisms and robotic arm linear axes, where the 32 mm track diameter and 7.5 kN dynamic rating match the duty. In agricultural and textile cam followers the unit fits a compact 12 mm seat, and in packaging machine timing mechanisms the 67 g mass keeps follower kinetics light. Designers also specify it for robotic arm linear axes, relying on the 13.8 mm width and the published 8.3 kN static rating. Check the mating track hardness and flatness — a soft or scalloped rail fails before the 32 mm outer ring does. Sealed PP/2RSR units are greased for life: never add a grease nipple, and respect the lower limiting speed imposed by the rubbing lips.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Check the mating track hardness and flatness — a soft or scalloped rail fails before the 32 mm outer ring does.
• Sealed PP/2RSR units are greased for life: never add a grease nipple, and respect the lower limiting speed imposed by the rubbing lips.
• The pin or shaft is part of the bearing system: harden it for RSTO/RNA22 positions, and size its deflection because the roller cannot compensate for a bent pin.