RNAO17X25X13-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 RNAO17X25X13-XL model number is decoded

envelope 17×25×13 mm: 17 mm seat is the hardened and ground shaft journal itself — there is no inner ring, with a thin 4.0 mm radial section packed with small-diameter needle rollers C is 11.7 kN and C0 14.6 kN at the 17 mm seat; the C/C0 ratio of 0.80 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 25 mm outside diameter the fatigue load limit Cur is 2.28 kN, the limiting speed 22,900 r/min and the thermal reference speed 15,200 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 0.69 kN/mm and per millimetre of width 0.90 kN/mm — the reason 13 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 22 g, just 0.07 g per mm² of projected 25×13 mm envelope, which keeps unbalanced forces low in fast-actuating linkages at 17 mm bore this size balances the 25 mm outside diameter against machineability of the adjacent parts — the most frequently specified band in the HR1 range Flangeless races make this bearing purely radial — adjacent thrust washers or shoulders must locate the assembly axially and keep the rollers from walking off the journal The shaft itself is the inner raceway: harden to 58–64 HRC and finish-grind to the catalogue journal tolerance, or the 14.6 kN static rating cannot be used X-life status (-XL) indicates the current Schaeffler premium execution at 17 mm bore; the 14.6 kN C0 rating reflects the improved rolling-contact geometry. Typical applications include copying and printing machine mechanisms, gearbox selector and change linkages and hydraulic and pneumatic pump eccentrics, where the 25 mm outside diameter and 11.7 kN dynamic rating match the duty. In copying and printing machine mechanisms the unit fits a compact 17 mm seat, and in gearbox selector and change linkages the 22 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for hydraulic and pneumatic pump eccentrics, relying on the 13 mm width and the published 14.6 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.
• Open ends draw contamination directly onto the needles; specify sealed or shielded positions in dusty environments rather than relying on grease alone.