NA4832-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 NA4832-XL model number is decoded

envelope 160×200×40 mm: 160 mm bore accepts a normal-tolerance machined shaft via the integral inner ring, with a thin 20.0 mm radial section packed with small-diameter needle rollers C is 181 kN and C0 435 kN at the 160 mm seat; the C/C0 ratio of 0.42 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 200 mm outside diameter the fatigue load limit Cur is 67 kN, the limiting speed 2,700 r/min and the thermal reference speed 1,650 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 1.13 kN/mm and per millimetre of width 4.53 kN/mm — the reason 40 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 2.89 kg (2890 g), just 0.36 g per mm² of projected 200×40 mm envelope, which keeps unbalanced forces low in fast-actuating linkages at 160 mm bore this is among the largest catalogue sizes; the 2,700 r/min limiting speed confirms a slow-speed, extreme-load application such as a slewing or rolling-mill position The integral inner ring brings the bore to 160 mm inside the 200×40 mm envelope; removing that ring gives the corresponding RNA/NK execution and a larger shaft for the same housing This is the choice for OEM production on soft shafts: machine the 160 mm seat to the recommended tolerance, fit the bearing, and let the inner ring provide the precision raceway The -XL suffix marks the X-life execution: refined raceway topography and upgraded materials lift the basic ratings versus the non-X-life bearing at the same 160×200×40 mm envelope. Typical applications include two-stroke and compressor piston pins, motorcycle and light-vehicle transmissions and rocker arms and valve trains, where the 200 mm outside diameter and 181 kN dynamic rating match the duty. In two-stroke and compressor piston pins the unit fits a compact 160 mm seat, and in motorcycle and light-vehicle transmissions the 2.89 kg mass is part of the rotor inertia calculation. Designers also specify it for rocker arms and valve trains, relying on the 40 mm width and the published 435 kN static rating. Needle bearings are pure-radial units — any thrust must be taken by separate washers or an adjacent bearing, especially on flangeless RNAO/NAO. Open ends draw contamination directly onto the needles; specify sealed or shielded positions in dusty environments rather than relying on grease alone.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Needle bearings are pure-radial units — any thrust must be taken by separate washers or an adjacent bearing, especially on flangeless RNAO/NAO.
• Open ends draw contamination directly onto the needles; specify sealed or shielded positions in dusty environments rather than relying on grease alone.
• 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.