RNAO35X47X32-ZW-ASR1-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 RNAO35X47X32-ZW-ASR1-XL model number is decoded

envelope 35×47×32 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 47.5 kN and C0 75 kN at the 35 mm seat; the C/C0 ratio of 0.63 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 12.6 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 1.36 kN/mm and per millimetre of width 1.48 kN/mm — the reason 32 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 156 g, just 0.10 g per mm² of projected 47×32 mm envelope, which keeps unbalanced forces low in fast-actuating linkages the 35 mm bore places this bearing in the medium band, where the 47 mm envelope already carries ratings in the tens of kilonewtons 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 Reading RNAO: O denotes the ribless (open-sided) race design; ZW means two roller rows in the one envelope -XL means this is an X-life bearing — Schaeffler's upgraded performance level with smoother raceways, so the 47.5 kN C rating and longer nominal life come without an envelope change. The -ZW double-row pack explains the high C0 of 75 kN in this thin-section bearing — two rows support the static peak that a single row could not. -ASR1 marks the outer-ring lubrication feature: the annular groove distributes grease to both needle rows of the 32 mm-wide pack. Typical applications include copying and printing machine mechanisms, gearbox selector and change linkages and hydraulic and pneumatic pump eccentrics, where the 47 mm outside diameter and 47.5 kN dynamic rating match the duty. In copying and printing machine mechanisms the unit fits a compact 35 mm seat, and in gearbox selector and change linkages the 156 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for hydraulic and pneumatic pump eccentrics, relying on the 32 mm width and the published 75 kN static rating. Open ends draw contamination directly onto the needles; specify sealed or shielded positions in dusty environments rather than relying on grease alone. 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

• Open ends draw contamination directly onto the needles; specify sealed or shielded positions in dusty environments rather than relying on grease alone.
• On reciprocating duty ensure the stroke rotates the full needle set, or brinelling occurs at the same roller positions.
• 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.