RNA6914-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 RNA6914-ZW-XL model number is decoded

envelope 80×100×54 mm: 80 mm seat is the hardened and ground shaft journal itself — there is no inner ring, with a thin 10.0 mm radial section packed with small-diameter needle rollers C is 145 kN and C0 265 kN at the 80 mm seat; the C/C0 ratio of 0.55 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 100 mm outside diameter the fatigue load limit Cur is 48 kN, the limiting speed 5,700 r/min and the thermal reference speed 3,450 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 1.81 kN/mm and per millimetre of width 2.69 kN/mm — the reason 54 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 857 g, just 0.16 g per mm² of projected 100×54 mm envelope, which keeps unbalanced forces low in fast-actuating linkages with a 80 mm bore this is a heavy-industrial bearing: 857 g of stiff ring and roller set, specified where rigidity matters more than speed RNA6914-ZW-XL has no inner ring: the needle rollers run directly on the shaft journal, so the seat must be hardened (58–64 HRC) and ground to bearing raceway quality Omitting the inner ring frees radial space — at a 80 mm shaft the outer diameter is only 100 mm and the width 54 mm, yet C is 145 kN 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 80×100×54 mm envelope. Reading -ZW: two needle rows instead of one; the load is spread over the 54 mm width while the outside diameter stays a compact 100 mm. Typical applications include hydraulic and pneumatic pump eccentrics, copying and printing machine mechanisms and agricultural machine pivots and linkages, where the 100 mm outside diameter and 145 kN dynamic rating match the duty. In hydraulic and pneumatic pump eccentrics the unit fits a compact 80 mm seat, and in copying and printing machine mechanisms the 857 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for agricultural machine pivots and linkages, relying on the 54 mm width and the published 265 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. Without an inner ring the shaft is the raceway: 58–64 HRC and a ground, polished journal are mandatory, not recommendations.

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.
• Without an inner ring the shaft is the raceway: 58–64 HRC and a ground, polished journal are mandatory, not recommendations.
• Needle bearings are pure-radial units — any thrust must be taken by separate washers or an adjacent bearing, especially on flangeless RNAO/NAO.