NUTR2052 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 NUTR2052 model number is decoded

envelope 20×52×25 mm: the 52 mm outside diameter is the track-running surface — a thick-walled outer ring over a 20 mm bore — and the 25 mm width sets the contact width on the mating track the catalogue lists C 31.5 kN and C0 44.5 kN for the NUTR double-row full-complement yoke-type track roller; the C/C0 ratio of 0.71 reflects a rolling-element pack sized for heavy static track loading, and the 16.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 5.8 kN at 20 mm bore, equivalent to 1.57 kN of dynamic rating per millimetre — the limiting speed is 4,200 r/min and, as for HR1 track rollers, no thermal reference speed is published the 20 mm bore takes the mounting pin or shaft; across the 25 mm contact width the dynamic rating works out to 1.26 kN per millimetre of rolling-element complement mass is 321 g, or 0.25 g per mm² of the 52×25 mm track envelope — inertia that the drive must accelerate on every index of the cam the 20 mm pin bore falls in the small band, the workhorse size for gearbox planetary positions, hydraulic pumps and general cam and linkage duty The open form is relubricated via the inner ring; follow the interval strictly because the packed roller rows trap contaminants Reading NUTR/PWTR: double-row, no cage, cylindrical rollers rather than needles — the pack is built for shock-dominated heavy track duty at 4,200 r/min Typical applications include conveyor transfer and diverting stations, robotic arm linear axes and automotive welding jig rollers, where the 52 mm track diameter and 31.5 kN dynamic rating match the duty. In conveyor transfer and diverting stations the unit fits a compact 20 mm seat, and in robotic arm linear axes the 321 g mass keeps follower kinetics light. Designers also specify it for automotive welding jig rollers, relying on the 25 mm width and the published 44.5 kN static rating. 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.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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.
• Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.