NK35-30-TV-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 NK35-30-TV-XL model number is decoded

envelope 35×45×30 mm: 35 mm seat is the hardened and ground shaft journal itself — there is no inner ring, with a thin 5.0 mm radial section packed with small-diameter needle rollers C is 46 kN and C0 81 kN at the 35 mm seat; the C/C0 ratio of 0.57 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 45 mm outside diameter the fatigue load limit Cur is 15.3 kN, the limiting speed 12,900 r/min and the thermal reference speed 7,100 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 1.31 kN/mm and per millimetre of width 1.53 kN/mm — the reason 30 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 106 g, just 0.08 g per mm² of projected 45×30 mm envelope, which keeps unbalanced forces low in fast-actuating linkages 35 mm bore marks the medium range: mounting forces and fits become critical, and the 106 g mass calls for proper induction or press tooling rather than hand fitting This bearing accepts axial displacement between shaft and housing because the rollers rotate on the free journal; it locates nothing axially and must be flanked by guide faces With Cur 15.3 kN and a 12,900 r/min limiting speed the unit suits pivots, rocker arms, pumps and compact gear trains running on hardened pins X-life status (-XL) indicates the current Schaeffler premium execution at 35 mm bore; the 81 kN C0 rating reflects the improved rolling-contact geometry. With the -TV polyamide cage the rollers are positively separated, so the 35 mm bearing suits continuous rotation rather than the slow oscillating duty where cageless packs are chosen. Typical applications include motorcycle and light-vehicle transmissions, connecting-rod small ends and two-stroke and compressor piston pins, where the 45 mm outside diameter and 46 kN dynamic rating match the duty. In motorcycle and light-vehicle transmissions the unit fits a compact 35 mm seat, and in connecting-rod small ends the 106 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for two-stroke and compressor piston pins, relying on the 30 mm width and the published 81 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. 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.

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.
• 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.
• Needle bearings are pure-radial units — any thrust must be taken by separate washers or an adjacent bearing, especially on flangeless RNAO/NAO.