RNAO35X47X16-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 RNAO35X47X16-XL model number is decoded

envelope 35×47×16 mm: 35 mm seat is the hardened and ground shaft journal itself — there is no inner ring, with a thin 6.0 mm radial section packed with small-diameter needle rollers C is 27.5 kN and C0 37.5 kN at the 35 mm seat; the C/C0 ratio of 0.73 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 47 mm outside diameter the fatigue load limit Cur is 6.3 kN, the limiting speed 12,700 r/min and the thermal reference speed 7,500 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 0.79 kN/mm and per millimetre of width 1.72 kN/mm — the reason 16 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 78 g, just 0.10 g per mm² of projected 47×16 mm envelope, which keeps unbalanced forces low in fast-actuating linkages at 35 mm bore this is a mainstream industrial size — conveyor drives, winches and medium gearboxes use the 16 mm width as a standard mounting space The shaft itself is the inner raceway: harden to 58–64 HRC and finish-grind to the catalogue journal tolerance, or the 37.5 kN static rating cannot be used With no ribs the rollers can be arranged very freely in the 16 mm width, giving C 27.5 kN at only 47 mm outside diameter — the most compact radial unit in the HR1 needle section As an X-life (-XL) bearing it benefits from the optimised surface finish that reduces friction and raises the fatigue strength behind the 6.3 kN Cur value. Typical applications include motorcycle and light-vehicle transmissions, connecting-rod small ends and two-stroke and compressor piston pins, where the 47 mm outside diameter and 27.5 kN dynamic rating match the duty. In motorcycle and light-vehicle transmissions the unit fits a compact 35 mm seat, and in connecting-rod small ends the 78 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for two-stroke and compressor piston pins, relying on the 16 mm width and the published 37.5 kN static rating. On reciprocating duty ensure the stroke rotates the full needle set, or brinelling occurs at the same roller positions. Keep the specified radial clearance; an oversized shaft or heavy interference removes it and the needles bind hot immediately.

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.
• Keep the specified radial clearance; an oversized shaft or heavy interference removes it and the needles bind hot immediately.
• Needle bearings are pure-radial units — any thrust must be taken by separate washers or an adjacent bearing, especially on flangeless RNAO/NAO.