NA69-32-ZW-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 NA69-32-ZW-XL model number is decoded

envelope 32×52×36 mm: 32 mm bore accepts a normal-tolerance machined shaft via the integral inner ring, with a thin 10.0 mm radial section packed with small-diameter needle rollers C is 53 kN and C0 82 kN at the 32 mm seat; the C/C0 ratio of 0.65 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 52 mm outside diameter the fatigue load limit Cur is 15.4 kN, the limiting speed 11,100 r/min and the thermal reference speed 6,100 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 1.66 kN/mm and per millimetre of width 1.47 kN/mm — the reason 36 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 288 g, just 0.15 g per mm² of projected 52×36 mm envelope, which keeps unbalanced forces low in fast-actuating linkages 32 mm bore marks the medium range: mounting forces and fits become critical, and the 288 g mass calls for proper induction or press tooling rather than hand fitting The 10.0 mm section still holds a full needle pack; like all needle bearings it cannot tolerate angular misalignment, so shaft and housing axes must be parallel Cur 15.4 kN, limiting speed 11,100 r/min, reference speed 6,100 r/min — the inner ring adds a few grams (total 288 g) but removes the hardening requirement X-life status (-XL) indicates the current Schaeffler premium execution at 32 mm bore; the 82 kN C0 rating reflects the improved rolling-contact geometry. The -ZW suffix denotes a double-row (zweireihig) needle roller and cage assembly: two roller rows share the 36 mm-wide envelope for higher capacity at the same bore. Typical applications include two-stroke and compressor piston pins, motorcycle and light-vehicle transmissions and rocker arms and valve trains, where the 52 mm outside diameter and 53 kN dynamic rating match the duty. In two-stroke and compressor piston pins the unit fits a compact 32 mm seat, and in motorcycle and light-vehicle transmissions the 288 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for rocker arms and valve trains, relying on the 36 mm width and the published 82 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.