NUTR45 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 NUTR45 model number is decoded

envelope 45×85×32 mm: the 85 mm outside diameter is the track-running surface — a thick-walled outer ring over a 45 mm bore — and the 32 mm width sets the contact width on the mating track the catalogue lists C 56 kN and C0 85 kN for the NUTR double-row full-complement yoke-type track roller; the C/C0 ratio of 0.66 reflects a rolling-element pack sized for heavy static track loading, and the 20.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 11.7 kN at 45 mm bore, equivalent to 1.24 kN of dynamic rating per millimetre — the limiting speed is 1,400 r/min and, as for HR1 track rollers, no thermal reference speed is published the 45 mm bore takes the mounting pin or shaft; across the 32 mm contact width the dynamic rating works out to 1.75 kN per millimetre of rolling-element complement mass is 883 g, or 0.32 g per mm² of the 85×32 mm track envelope — inertia that the drive must accelerate on every index of the cam 45 mm pin bore marks the medium range: mounting forces and fits become critical, and the 883 g mass calls for proper induction or press tooling rather than hand fitting NUTR is the double-row full-complement yoke roller: two cylindrical roller rows give the highest radial capacity in the 85 mm track-roller envelope, open and relubricatable The open form is relubricated via the inner ring; follow the interval strictly because the packed roller rows trap contaminants Typical applications include woodworking machine feed tracks, cam drives and indexing tables and packaging machine timing mechanisms, where the 85 mm track diameter and 56 kN dynamic rating match the duty. In woodworking machine feed tracks the unit fits a compact 45 mm seat, and in cam drives and indexing tables the 883 g mass keeps follower kinetics light. Designers also specify it for packaging machine timing mechanisms, relying on the 32 mm width and the published 85 kN static rating. Check the mating track hardness and flatness — a soft or scalloped rail fails before the 85 mm outer ring does. 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

• Check the mating track hardness and flatness — a soft or scalloped rail fails before the 85 mm outer ring does.
• 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.
• 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.