NUTR1747 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 NUTR1747 model number is decoded

envelope 17×47×21 mm: the 47 mm outside diameter is the track-running surface — a thick-walled outer ring over a 17 mm bore — and the 21 mm width sets the contact width on the mating track the catalogue lists C 21.6 kN and C0 31 kN for the NUTR double-row full-complement yoke-type track roller; the C/C0 ratio of 0.70 reflects a rolling-element pack sized for heavy static track loading, and the 15.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 3.9 kN at 17 mm bore, equivalent to 1.27 kN of dynamic rating per millimetre — the limiting speed is 5,500 r/min and, as for HR1 track rollers, no thermal reference speed is published the 17 mm bore takes the mounting pin or shaft; across the 21 mm contact width the dynamic rating works out to 1.03 kN per millimetre of rolling-element complement mass is 220 g, or 0.22 g per mm² of the 47×21 mm track envelope — inertia that the drive must accelerate on every index of the cam at 17 mm pin bore this size balances the 47 mm outside diameter against machineability of the adjacent parts — the most frequently specified band in the HR1 range The 17 mm bore takes the pin; yoke design means the machine lugs support the roller on both sides, which is essential given the 31 kN static rating No thermal reference speed is published — the 5,500 r/min limiting speed is the design ceiling, set by roller and seal kinematics Typical applications include glass and ceramic line conveyors, linear rail and profile track guidance and printing press sheet-transfer grippers, where the 47 mm track diameter and 21.6 kN dynamic rating match the duty. In glass and ceramic line conveyors the unit fits a compact 17 mm seat, and in linear rail and profile track guidance the 220 g mass keeps follower kinetics light. Designers also specify it for printing press sheet-transfer grippers, relying on the 21 mm width and the published 31 kN static rating. 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. Flangeless STO/RSTO/RNA22/NA22 rollers need external axial location; circlips or shoulders must control end float or the roller walks off the track.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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.
• Flangeless STO/RSTO/RNA22/NA22 rollers need external axial location; circlips or shoulders must control end float or the roller walks off the track.
• The crowned outer profile tolerates only small skew; a track that departs by more than the catalogue angle still causes edge loading.