NUTR3580 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 NUTR3580 model number is decoded

envelope 35×80×29 mm: the 80 mm outside diameter is the track-running surface — a thick-walled outer ring over a 35 mm bore — and the 29 mm width sets the contact width on the mating track the catalogue lists C 51 kN and C0 79 kN for the NUTR double-row full-complement yoke-type track roller; the C/C0 ratio of 0.65 reflects a rolling-element pack sized for heavy static track loading, and the 22.5 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 10.5 kN at 35 mm bore, equivalent to 1.46 kN of dynamic rating per millimetre — the limiting speed is 2,100 r/min and, as for HR1 track rollers, no thermal reference speed is published the 35 mm bore takes the mounting pin or shaft; across the 29 mm contact width the dynamic rating works out to 1.76 kN per millimetre of rolling-element complement mass is 836 g, or 0.36 g per mm² of the 80×29 mm track envelope — inertia that the drive must accelerate on every index of the cam the 35 mm pin bore places this bearing in the medium band, where the 80 mm envelope already carries ratings in the tens of kilonewtons Reading NUTR/PWTR: double-row, no cage, cylindrical rollers rather than needles — the pack is built for shock-dominated heavy track duty at 2,100 r/min The open form is relubricated via the inner ring; follow the interval strictly because the packed roller rows trap contaminants Typical applications include automatic assembly machine carriages, automotive welding jig rollers and linear rail and profile track guidance, where the 80 mm track diameter and 51 kN dynamic rating match the duty. In automatic assembly machine carriages the unit fits a compact 35 mm seat, and in automotive welding jig rollers the 836 g mass keeps follower kinetics light. Designers also specify it for linear rail and profile track guidance, relying on the 29 mm width and the published 79 kN static rating. The crowned outer profile tolerates only small skew; a track that departs by more than the catalogue angle still causes edge loading. Sealed PP/2RSR units are greased for life: never add a grease nipple, and respect the lower limiting speed imposed by the rubbing lips.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The crowned outer profile tolerates only small skew; a track that departs by more than the catalogue angle still causes edge loading.
• Sealed PP/2RSR units are greased for life: never add a grease nipple, and respect the lower limiting speed imposed by the rubbing lips.
• 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.