NUTR4090 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 NUTR4090 model number is decoded

envelope 40×90×32 mm: the 90 mm outside diameter is the track-running surface — a thick-walled outer ring over a 40 mm bore — and the 32 mm width sets the contact width on the mating track the catalogue lists C 66 kN and C0 103 kN for the NUTR double-row full-complement yoke-type track roller; the C/C0 ratio of 0.64 reflects a rolling-element pack sized for heavy static track loading, and the 25.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 14.2 kN at 40 mm bore, equivalent to 1.65 kN of dynamic rating per millimetre — the limiting speed is 1,600 r/min and, as for HR1 track rollers, no thermal reference speed is published the 40 mm bore takes the mounting pin or shaft; across the 32 mm contact width the dynamic rating works out to 2.06 kN per millimetre of rolling-element complement mass is 1.129 kg (1129 g), or 0.39 g per mm² of the 90×32 mm track envelope — inertia that the drive must accelerate on every index of the cam at 40 mm pin bore this is a mainstream industrial size — conveyor drives, winches and medium gearboxes use the 32 mm width as a standard mounting space No thermal reference speed is published — the 1,600 r/min limiting speed is the design ceiling, set by roller and seal kinematics At 1129 g the double-row roller has substantial inertia; the cam drive must accelerate that mass, and a misaligned track concentrates load onto one row Typical applications include printing press sheet-transfer grippers, glass and ceramic line conveyors and cam drives and indexing tables, where the 90 mm track diameter and 66 kN dynamic rating match the duty. In printing press sheet-transfer grippers the unit fits a compact 40 mm seat, and in glass and ceramic line conveyors the 1.129 kg mass is part of the rotor inertia calculation. Designers also specify it for cam drives and indexing tables, relying on the 32 mm width and the published 103 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. Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.

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.
• Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.
• Flangeless STO/RSTO/RNA22/NA22 rollers need external axial location; circlips or shoulders must control end float or the roller walks off the track.