NAO30X47X16-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 NAO30X47X16-XL model number is decoded

envelope 30×47×16 mm: 30 mm bore accepts a normal-tolerance machined shaft via the integral inner ring, with a thin 8.5 mm radial section packed with small-diameter needle rollers C is 27.5 kN and C0 37.5 kN at the 30 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 6,900 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 0.92 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 109 g, just 0.14 g per mm² of projected 47×16 mm envelope, which keeps unbalanced forces low in fast-actuating linkages with a 30 mm bore the 16 mm width and 27.5 kN C rating suit high-cycle industrial machinery rather than instrument duty With the inner ring fitted the shaft seat stays at normal bearing-shaft tolerance; C0 is 37.5 kN and Cur 6.3 kN for the 109 g unit X-life status (-XL) indicates the current Schaeffler premium execution at 30 mm bore; the 37.5 kN C0 rating reflects the improved rolling-contact geometry. Typical applications include gearbox selector and change linkages, planetary gear bearings and copying and printing machine mechanisms, where the 47 mm outside diameter and 27.5 kN dynamic rating match the duty. In gearbox selector and change linkages the unit fits a compact 30 mm seat, and in planetary gear bearings the 109 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for copying and printing machine mechanisms, relying on the 16 mm width and the published 37.5 kN static rating. 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. On reciprocating duty ensure the stroke rotates the full needle set, or brinelling occurs at the same roller positions.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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.
• On reciprocating duty ensure the stroke rotates the full needle set, or brinelling occurs at the same roller positions.
• 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.