NK14-16-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 NK14-16-XL model number is decoded

envelope 14×22×16 mm: 14 mm seat is the hardened and ground shaft journal itself — there is no inner ring, with a thin 4.0 mm radial section packed with small-diameter needle rollers C is 11.4 kN and C0 11.5 kN at the 14 mm seat; the C/C0 ratio of 0.99 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 22 mm outside diameter the fatigue load limit Cur is 2.14 kN, the limiting speed 24,600 r/min and the thermal reference speed 18,600 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 0.81 kN/mm and per millimetre of width 0.71 kN/mm — the reason 16 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 20.7 g, just 0.06 g per mm² of projected 22×16 mm envelope, which keeps unbalanced forces low in fast-actuating linkages with a 14 mm bore the 16 mm width and 11.4 kN C rating suit high-cycle industrial machinery rather than instrument duty With Cur 2.14 kN and a 24,600 r/min limiting speed the unit suits pivots, rocker arms, pumps and compact gear trains running on hardened pins The thin 4.0 mm section makes the 20.7 g bearing sensitive to seat geometry — a tapered or lobed journal preloads part of the needle set and shows up as local pitting The -XL suffix marks the X-life execution: refined raceway topography and upgraded materials lift the basic ratings versus the non-X-life bearing at the same 14×22×16 mm envelope. Typical applications include hydraulic and pneumatic pump eccentrics, copying and printing machine mechanisms and agricultural machine pivots and linkages, where the 22 mm outside diameter and 11.4 kN dynamic rating match the duty. In hydraulic and pneumatic pump eccentrics the unit fits a compact 14 mm seat, and in copying and printing machine mechanisms the 20.7 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for agricultural machine pivots and linkages, relying on the 16 mm width and the published 11.5 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. 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

• Open ends draw contamination directly onto the needles; specify sealed or shielded positions in dusty environments rather than relying on grease alone.
• 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.