NA22-6-2RSR 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 NA22-6-2RSR model number is decoded

envelope 6×19×11.8 mm: the 19 mm outside diameter is the track-running surface — a thick-walled outer ring over a 6 mm bore — and the 11.8 mm width sets the contact width on the mating track the catalogue lists C 3.9 kN and C0 3.7 kN for the NA22 sealed yoke-type track roller with inner ring; the C/C0 ratio of 1.05 reflects a rolling-element pack sized for heavy static track loading, and the 6.5 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 0.495 kN at 6 mm bore, equivalent to 0.65 kN of dynamic rating per millimetre — the limiting speed is 9,000 r/min and, as for HR1 track rollers, no thermal reference speed is published the 6 mm bore takes the mounting pin or shaft; across the 11.8 mm contact width the dynamic rating works out to 0.33 kN per millimetre of rolling-element complement mass is 22 g, or 0.10 g per mm² of the 19×11.8 mm track envelope — inertia that the drive must accelerate on every index of the cam 6 mm pin bore and only 22 g: the smallest sizes demand accurate shaft geometry, because the 6.5 mm section leaves no tolerance for a soft or tapered seat NA22 is the sealed yoke-type track roller with inner ring: 2RSR contact seals on both sides and a 6 mm bore for an ordinary mounting pin Typical positions are conveyor diverts, packaging cams and textile machines where 22 g maintenance-free rollers replace plain-bushed followers 2RSR means two side contact seals: the sealed roller excludes contamination without a separate shield arrangement, at the published limiting speed of 9,000 r/min. Typical applications include robotic arm linear axes, agricultural and textile cam followers and conveyor transfer and diverting stations, where the 19 mm track diameter and 3.9 kN dynamic rating match the duty. In robotic arm linear axes the unit fits a compact 6 mm seat, and in agricultural and textile cam followers the 22 g mass keeps follower kinetics light. Designers also specify it for conveyor transfer and diverting stations, relying on the 11.8 mm width and the published 3.7 kN static rating. Flangeless STO/RSTO/RNA22/NA22 rollers need external axial location; circlips or shoulders must control end float or the roller walks off the track. 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.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Flangeless STO/RSTO/RNA22/NA22 rollers need external axial location; circlips or shoulders must control end float or the roller walks off the track.
• 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.
• The crowned outer profile tolerates only small skew; a track that departs by more than the catalogue angle still causes edge loading.