RSTO10 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 RSTO10 model number is decoded

envelope 14×30×11.8 mm: the 30 mm outside diameter is the track-running surface — a thick-walled outer ring over a 14 mm bore — and the 11.8 mm width sets the contact width on the mating track the catalogue lists C 8.4 kN and C0 9.5 kN for the RSTO yoke-type track roller without inner ring, without axial guidance; the C/C0 ratio of 0.88 reflects a rolling-element pack sized for heavy static track loading, and the 8.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 1.39 kN at 14 mm bore, equivalent to 0.60 kN of dynamic rating per millimetre — the limiting speed is 5,500 r/min and, as for HR1 track rollers, no thermal reference speed is published the 14 mm bore takes the mounting pin or shaft; across the 11.8 mm contact width the dynamic rating works out to 0.71 kN per millimetre of rolling-element complement mass is 42 g, or 0.12 g per mm² of the 30×11.8 mm track envelope — inertia that the drive must accelerate on every index of the cam at 14 mm pin bore this size balances the 30 mm outside diameter against machineability of the adjacent parts — the most frequently specified band in the HR1 range RSTO is the basic yoke-type track roller without inner ring and without axial guidance: the needle rollers run directly on a hardened, ground mounting pin Typical applications include agricultural and textile cam followers, packaging machine timing mechanisms and robotic arm linear axes, where the 30 mm track diameter and 8.4 kN dynamic rating match the duty. In agricultural and textile cam followers the unit fits a compact 14 mm seat, and in packaging machine timing mechanisms the 42 g mass keeps follower kinetics light. Designers also specify it for robotic arm linear axes, relying on the 11.8 mm width and the published 9.5 kN static rating. Full-complement NATV/NUTR/PWTR rollers make heat and flat-spot easily — slow continuous rotation is fine, stationary load on a turning track is not. The pin or shaft is part of the bearing system: harden it for RSTO/RNA22 positions, and size its deflection because the roller cannot compensate for a bent pin.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Full-complement NATV/NUTR/PWTR rollers make heat and flat-spot easily — slow continuous rotation is fine, stationary load on a turning track is not.
• The pin or shaft is part of the bearing system: harden it for RSTO/RNA22 positions, and size its deflection because the roller cannot compensate for a bent pin.
• Sealed PP/2RSR units are greased for life: never add a grease nipple, and respect the lower limiting speed imposed by the rubbing lips.