NA4822-XL 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 NA4822-XL model number is decoded

envelope 110×140×30 mm: 110 mm bore accepts a normal-tolerance machined shaft via the integral inner ring, with a thin 15.0 mm radial section packed with small-diameter needle rollers C is 106 kN and C0 216 kN at the 110 mm seat; the C/C0 ratio of 0.49 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 140 mm outside diameter the fatigue load limit Cur is 36.5 kN, the limiting speed 3,900 r/min and the thermal reference speed 2,270 r/min; for small needle bearings the reference speed can exceed the kinematic limit, so the lower of the two governs the application dynamic capacity per millimetre of bore is 0.96 kN/mm and per millimetre of width 3.53 kN/mm — the reason 30 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 1.08 kg (1080 g), just 0.26 g per mm² of projected 140×30 mm envelope, which keeps unbalanced forces low in fast-actuating linkages at 110 mm bore the 140 mm outside diameter and 30 mm width target rolling stands, construction machinery and heavy gearboxes; the limiting speed drops to 3,900 r/min Cur 36.5 kN, limiting speed 3,900 r/min, reference speed 2,270 r/min — the inner ring adds a few grams (total 1080 g) but removes the hardening requirement Reading the NA48 prefix: machined-ring needle bearing with inner ring, one roller row, capable of pure radial load at 106 kN C -XL means this is an X-life bearing — Schaeffler's upgraded performance level with smoother raceways, so the 106 kN C rating and longer nominal life come without an envelope change. Typical applications include hydraulic and pneumatic pump eccentrics, copying and printing machine mechanisms and agricultural machine pivots and linkages, where the 140 mm outside diameter and 106 kN dynamic rating match the duty. In hydraulic and pneumatic pump eccentrics the unit fits a compact 110 mm seat, and in copying and printing machine mechanisms the 1.08 kg mass is part of the rotor inertia calculation. Designers also specify it for agricultural machine pivots and linkages, relying on the 30 mm width and the published 216 kN static rating. Keep the specified radial clearance; an oversized shaft or heavy interference removes it and the needles bind hot immediately. Do not press an RNA/NK assembly in through the outer ring when mounting it on a shaft, and vice versa — rolling forces through the wrong ring bruises the raceways.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Keep the specified radial clearance; an oversized shaft or heavy interference removes it and the needles bind hot immediately.
• Do not press an RNA/NK assembly in through the outer ring when mounting it on a shaft, and vice versa — rolling forces through the wrong ring bruises the raceways.
• Open ends draw contamination directly onto the needles; specify sealed or shielded positions in dusty environments rather than relying on grease alone.