RNAO65X85X30-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 RNAO65X85X30-XL model number is decoded

envelope 65×85×30 mm: 65 mm seat is the hardened and ground shaft journal itself — there is no inner ring, with a thin 10.0 mm radial section packed with small-diameter needle rollers C is 64 kN and C0 123 kN at the 65 mm seat; the C/C0 ratio of 0.52 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 85 mm outside diameter the fatigue load limit Cur is 21.5 kN, the limiting speed 7,100 r/min and the thermal reference speed 4,550 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 0.98 kN/mm and per millimetre of width 2.13 kN/mm — the reason 30 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 464 g, just 0.18 g per mm² of projected 85×30 mm envelope, which keeps unbalanced forces low in fast-actuating linkages with a 65 mm bore this is a heavy-industrial bearing: 464 g of stiff ring and roller set, specified where rigidity matters more than speed With no ribs the rollers can be arranged very freely in the 30 mm width, giving C 64 kN at only 85 mm outside diameter — the most compact radial unit in the HR1 needle section RNAO marks the flangeless needle bearing without inner ring: neither race carries ribs, so the 65 mm hardened shaft journal and the housing faces provide all axial guidance -XL means this is an X-life bearing — Schaeffler's upgraded performance level with smoother raceways, so the 64 kN C rating and longer nominal life come without an envelope change. Typical applications include motorcycle and light-vehicle transmissions, connecting-rod small ends and two-stroke and compressor piston pins, where the 85 mm outside diameter and 64 kN dynamic rating match the duty. In motorcycle and light-vehicle transmissions the unit fits a compact 65 mm seat, and in connecting-rod small ends the 464 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for two-stroke and compressor piston pins, relying on the 30 mm width and the published 123 kN static rating. On reciprocating duty ensure the stroke rotates the full needle set, or brinelling occurs at the same roller positions. Needle bearings are pure-radial units — any thrust must be taken by separate washers or an adjacent bearing, especially on flangeless RNAO/NAO.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On reciprocating duty ensure the stroke rotates the full needle set, or brinelling occurs at the same roller positions.
• Needle bearings are pure-radial units — any thrust must be taken by separate washers or an adjacent bearing, especially on flangeless RNAO/NAO.
• Without an inner ring the shaft is the raceway: 58–64 HRC and a ground, polished journal are mandatory, not recommendations.