RNA69-28-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 RNA69-28-XL model number is decoded

envelope 32×45×30 mm: 32 mm seat is the hardened and ground shaft journal itself — there is no inner ring, with a thin 6.5 mm radial section packed with small-diameter needle rollers C is 45.5 kN and C0 63 kN at the 32 mm seat; the C/C0 ratio of 0.72 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 11.6 kN, the limiting speed 13,600 r/min and the thermal reference speed 7,400 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 1.42 kN/mm and per millimetre of width 1.52 kN/mm — the reason 30 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 135 g, just 0.10 g per mm² of projected 45×30 mm envelope, which keeps unbalanced forces low in fast-actuating linkages the 32 mm bore places this bearing in the medium band, where the 45 mm envelope already carries ratings in the tens of kilonewtons RNA69/28-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 The hardness requirement is unforgiving: below about 58 HRC the 32 mm journal brinels under the 63 kN static rating, and roughness above raceway finish accelerates roller wear -XL means this is an X-life bearing — Schaeffler's upgraded performance level with smoother raceways, so the 45.5 kN C rating and longer nominal life come without an envelope change. Typical applications include gearbox selector and change linkages, planetary gear bearings and copying and printing machine mechanisms, where the 45 mm outside diameter and 45.5 kN dynamic rating match the duty. In gearbox selector and change linkages the unit fits a compact 32 mm seat, and in planetary gear bearings the 135 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for copying and printing machine mechanisms, relying on the 30 mm width and the published 63 kN static rating. Without an inner ring the shaft is the raceway: 58–64 HRC and a ground, polished journal are mandatory, not recommendations. On reciprocating duty ensure the stroke rotates the full needle set, or brinelling occurs at the same roller positions.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Without an inner ring the shaft is the raceway: 58–64 HRC and a ground, polished journal are mandatory, not recommendations.
• On reciprocating duty ensure the stroke rotates the full needle set, or brinelling occurs at the same roller positions.
• 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.