NKI60-35-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 NKI60-35-XL model number is decoded

envelope 60×82×35 mm: 60 mm bore accepts a normal-tolerance machined shaft via the integral inner ring, with a thin 11.0 mm radial section packed with small-diameter needle rollers C is 70 kN and C0 139 kN at the 60 mm seat; the C/C0 ratio of 0.50 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 82 mm outside diameter the fatigue load limit Cur is 26 kN, the limiting speed 6,800 r/min and the thermal reference speed 4,050 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 1.17 kN/mm and per millimetre of width 2.00 kN/mm — the reason 35 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 553 g, just 0.19 g per mm² of projected 82×35 mm envelope, which keeps unbalanced forces low in fast-actuating linkages the 60 mm bore places this bearing in the medium band, where the 82 mm envelope already carries ratings in the tens of kilonewtons Reading the NKI prefix: machined-ring needle bearing with inner ring, one roller row, capable of pure radial load at 70 kN C Cur 26 kN, limiting speed 6,800 r/min, reference speed 4,050 r/min — the inner ring adds a few grams (total 553 g) but removes the hardening requirement The -XL suffix is the Schaeffler X-life mark: interchangeable envelope with the basic bearing, but higher load capacity and lower running temperature at the 6,800 r/min limit. Typical applications include copying and printing machine mechanisms, gearbox selector and change linkages and hydraulic and pneumatic pump eccentrics, where the 82 mm outside diameter and 70 kN dynamic rating match the duty. In copying and printing machine mechanisms the unit fits a compact 60 mm seat, and in gearbox selector and change linkages the 553 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for hydraulic and pneumatic pump eccentrics, relying on the 35 mm width and the published 139 kN static rating. 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. 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

• 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.
• Keep the specified radial clearance; an oversized shaft or heavy interference removes it and the needles bind hot immediately.
• 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.