NAO17X35X16-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 NAO17X35X16-XL model number is decoded

envelope 17×35×16 mm: 17 mm bore accepts a normal-tolerance machined shaft via the integral inner ring, with a thin 9.0 mm radial section packed with small-diameter needle rollers C is 22.6 kN and C0 25.5 kN at the 17 mm seat; the C/C0 ratio of 0.89 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 35 mm outside diameter the fatigue load limit Cur is 4.25 kN, the limiting speed 19,200 r/min and the thermal reference speed 10,100 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 1.33 kN/mm and per millimetre of width 1.41 kN/mm — the reason 16 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 78 g, just 0.14 g per mm² of projected 35×16 mm envelope, which keeps unbalanced forces low in fast-actuating linkages the 17 mm bore falls in the small band, the workhorse size for gearbox planetary positions, hydraulic pumps and general cam and linkage duty Flangeless NAO bearings tolerate ring displacement during mounting but not misalignment in operation — the 9.0 mm section is too thin to compensate for tilted seats The single needle row fills the thin section, with limiting speed 19,200 r/min and reference speed 10,100 r/min The -XL suffix is the Schaeffler X-life mark: interchangeable envelope with the basic bearing, but higher load capacity and lower running temperature at the 19,200 r/min limit. Typical applications include hydraulic and pneumatic pump eccentrics, copying and printing machine mechanisms and agricultural machine pivots and linkages, where the 35 mm outside diameter and 22.6 kN dynamic rating match the duty. In hydraulic and pneumatic pump eccentrics the unit fits a compact 17 mm seat, and in copying and printing machine mechanisms the 78 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for agricultural machine pivots and linkages, relying on the 16 mm width and the published 25.5 kN static rating. Keep the specified radial clearance; an oversized shaft or heavy interference removes it and the needles bind hot immediately. 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

• Keep the specified radial clearance; an oversized shaft or heavy interference removes it and the needles bind hot immediately.
• 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.
• 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.