RNA4832-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 RNA4832-XL model number is decoded

envelope 175×200×40 mm: 175 mm seat is the hardened and ground shaft journal itself — there is no inner ring, with a thin 12.5 mm radial section packed with small-diameter needle rollers C is 181 kN and C0 435 kN at the 175 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 1,700 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 1.03 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 1.7 kg (1700 g), just 0.21 g per mm² of projected 200×40 mm envelope, which keeps unbalanced forces low in fast-actuating linkages the 175 mm bore puts this execution at the top of the HR1 range — the 200 mm outside diameter, 40 mm width and 1.7 kg mass are built for primary-industry load cases The thin 12.5 mm section makes the 1700 g bearing sensitive to seat geometry — a tapered or lobed journal preloads part of the needle set and shows up as local pitting Reading the RNA48 prefix: a machined (not drawn-cup) outer ring with the needle complement; an inner ring from the IR series can be added later if the shaft cannot be hardened As an X-life (-XL) bearing it benefits from the optimised surface finish that reduces friction and raises the fatigue strength behind the 67 kN Cur value. Typical applications include motorcycle and light-vehicle transmissions, connecting-rod small ends and two-stroke and compressor piston pins, where the 200 mm outside diameter and 181 kN dynamic rating match the duty. In motorcycle and light-vehicle transmissions the unit fits a compact 175 mm seat, and in connecting-rod small ends the 1.7 kg mass is part of the rotor inertia calculation. Designers also specify it for two-stroke and compressor piston pins, relying on the 40 mm width and the published 435 kN static rating. Without an inner ring the shaft is the raceway: 58–64 HRC and a ground, polished journal are mandatory, not recommendations. Adding an IR inner ring changes the envelope logic: the same outer assembly then fits a smaller shaft — recheck bore, clearance and ratings when substituting.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Without an inner ring the shaft is the raceway: 58–64 HRC and a ground, polished journal are mandatory, not recommendations.
• Adding an IR inner ring changes the envelope logic: the same outer assembly then fits a smaller shaft — recheck bore, clearance and ratings when substituting.
• Keep the specified radial clearance; an oversized shaft or heavy interference removes it and the needles bind hot immediately.