RNAO8X15X10-TV-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 RNAO8X15X10-TV-XL model number is decoded

envelope 8×15×10 mm: 8 mm seat is the hardened and ground shaft journal itself — there is no inner ring, with a thin 3.5 mm radial section packed with small-diameter needle rollers C is 4.45 kN and C0 4.1 kN at the 8 mm seat; the C/C0 ratio of 1.09 is characteristic of a needle bearing — high static rating relative to dynamic in a compact 15 mm outside diameter the fatigue load limit Cur is 0.7 kN, the limiting speed 32,500 r/min and the thermal reference speed 35,500 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 0.56 kN/mm and per millimetre of width 0.45 kN/mm — the reason 10 mm-wide needle bearings routinely replace much larger ball or roller positions mass is 8 g, just 0.05 g per mm² of projected 15×10 mm envelope, which keeps unbalanced forces low in fast-actuating linkages 8 mm bore and only 8 g: the smallest sizes demand accurate shaft geometry, because the 3.5 mm section leaves no tolerance for a soft or tapered seat The shaft itself is the inner raceway: harden to 58–64 HRC and finish-grind to the catalogue journal tolerance, or the 4.1 kN static rating cannot be used RNAO marks the flangeless needle bearing without inner ring: neither race carries ribs, so the 8 mm hardened shaft journal and the housing faces provide all axial guidance 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 8×15×10 mm envelope. With the -TV polyamide cage the rollers are positively separated, so the 8 mm bearing suits continuous rotation rather than the slow oscillating duty where cageless packs are chosen. Typical applications include connecting-rod small ends, textile machine heald and cam shafts and motorcycle and light-vehicle transmissions, where the 15 mm outside diameter and 4.45 kN dynamic rating match the duty. In connecting-rod small ends the unit fits a compact 8 mm seat, and in textile machine heald and cam shafts the 8 g mass keeps unbalanced forces low in fast linkages. Designers also specify it for motorcycle and light-vehicle transmissions, relying on the 10 mm width and the published 4.1 kN static rating. Keep the specified radial clearance; an oversized shaft or heavy interference removes it and the needles bind hot immediately. 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

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