RSTO30 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 RSTO30 model number is decoded

envelope 38×62×19.8 mm: the 62 mm outside diameter is the track-running surface — a thick-walled outer ring over a 38 mm bore — and the 19.8 mm width sets the contact width on the mating track the catalogue lists C 23.1 kN and C0 35.5 kN for the RSTO yoke-type track roller without inner ring, without axial guidance; the C/C0 ratio of 0.65 reflects a rolling-element pack sized for heavy static track loading, and the 12.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 4.8 kN at 38 mm bore, equivalent to 0.61 kN of dynamic rating per millimetre — the limiting speed is 1,300 r/min and, as for HR1 track rollers, no thermal reference speed is published the 38 mm bore takes the mounting pin or shaft; across the 19.8 mm contact width the dynamic rating works out to 1.17 kN per millimetre of rolling-element complement mass is 255 g, or 0.21 g per mm² of the 62×19.8 mm track envelope — inertia that the drive must accelerate on every index of the cam the 38 mm pin bore places this bearing in the medium band, where the 62 mm envelope already carries ratings in the tens of kilonewtons The thick-walled outer ring is the running element — 62 mm outside diameter over a 38 mm pin seat — and is made to roll flat on a mating track rather than inside a housing With C 23.1 kN and C0 35.5 kN the roller accepts track loads directly; the 1,300 r/min limiting speed is the only speed figure HR1 publishes for track rollers Typical applications include packaging machine timing mechanisms, woodworking machine feed tracks and agricultural and textile cam followers, where the 62 mm track diameter and 23.1 kN dynamic rating match the duty. In packaging machine timing mechanisms the unit fits a compact 38 mm seat, and in woodworking machine feed tracks the 255 g mass keeps follower kinetics light. Designers also specify it for agricultural and textile cam followers, relying on the 19.8 mm width and the published 35.5 kN static rating. Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam. Check the mating track hardness and flatness — a soft or scalloped rail fails before the 62 mm outer ring does.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.
• Check the mating track hardness and flatness — a soft or scalloped rail fails before the 62 mm outer ring does.
• Sealed PP/2RSR units are greased for life: never add a grease nipple, and respect the lower limiting speed imposed by the rubbing lips.