NKI95-26-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 NKI95-26-XL model number is decoded

envelope 95×125×26 mm: 95 mm bore accepts a normal-tolerance machined shaft via the integral inner ring, with a thin 15.0 mm radial section packed with small-diameter needle rollers C is 89 kN and C0 155 kN at the 95 mm seat; the C/C0 ratio of 0.57 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 125 mm outside diameter the fatigue load limit Cur is 27 kN, the limiting speed 4,400 r/min and the thermal reference speed 2,850 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 0.94 kN/mm and per millimetre of width 3.42 kN/mm — the reason 26 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 816 g, just 0.25 g per mm² of projected 125×26 mm envelope, which keeps unbalanced forces low in fast-actuating linkages at 95 mm bore the 125 mm outside diameter and 26 mm width target rolling stands, construction machinery and heavy gearboxes; the limiting speed drops to 4,400 r/min This is the choice for OEM production on soft shafts: machine the 95 mm seat to the recommended tolerance, fit the bearing, and let the inner ring provide the precision raceway NKI95/26-XL is supplied with a machined inner ring, so it mounts on an ordinary turned and ground shaft of normal tolerance — hardening the journal is not required X-life status (-XL) indicates the current Schaeffler premium execution at 95 mm bore; the 155 kN C0 rating reflects the improved rolling-contact geometry. Typical applications include connecting-rod small ends, textile machine heald and cam shafts and motorcycle and light-vehicle transmissions, where the 125 mm outside diameter and 89 kN dynamic rating match the duty. In connecting-rod small ends the unit fits a compact 95 mm seat, and in textile machine heald and cam shafts the 816 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for motorcycle and light-vehicle transmissions, relying on the 26 mm width and the published 155 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. Open ends draw contamination directly onto the needles; specify sealed or shielded positions in dusty environments rather than relying on grease alone.

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.
• Open ends draw contamination directly onto the needles; specify sealed or shielded positions in dusty environments rather than relying on grease alone.
• Without an inner ring the shaft is the raceway: 58–64 HRC and a ground, polished journal are mandatory, not recommendations.