NA6907-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 NA6907-ZW-XL model number is decoded

envelope 35×55×36 mm: 35 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 54 kN and C0 86 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 55 mm outside diameter the fatigue load limit Cur is 16.2 kN, the limiting speed 10,700 r/min and the thermal reference speed 5,900 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 1.54 kN/mm and per millimetre of width 1.50 kN/mm — the reason 36 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 310 g, just 0.16 g per mm² of projected 55×36 mm envelope, which keeps unbalanced forces low in fast-actuating linkages at 35 mm bore this is a mainstream industrial size — conveyor drives, winches and medium gearboxes use the 36 mm width as a standard mounting space The inner ring is separable, so the outer-ring/roller assembly can be pressed into the housing first; the 86 kN C0 rating still assumes full rigid support under both rings Reading the NA69 prefix: machined-ring needle bearing with inner ring, two roller rows, capable of pure radial load at 54 kN C X-life status (-XL) indicates the current Schaeffler premium execution at 35 mm bore; the 86 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 planetary gear bearings, small electric motor accessory drives and gearbox selector and change linkages, where the 55 mm outside diameter and 54 kN dynamic rating match the duty. In planetary gear bearings the unit fits a compact 35 mm seat, and in small electric motor accessory drives the 310 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for gearbox selector and change linkages, relying on the 36 mm width and the published 86 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.