NUKRE47 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 NUKRE47 model number is decoded

envelope 20×47×66 mm: the 47 mm outside diameter is the track-running surface — a thick-walled outer ring over a 20 mm stud — and the 66 mm overall stud-and-roller length sets the required bracket clearance the catalogue lists C 28.5 kN and C0 38 kN for the NUKRE double-row full-complement stud-type track roller with eccentric locking collar; the C/C0 ratio of 0.75 reflects a rolling-element pack sized for heavy static track loading, and the 13.5 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 4.95 kN at 20 mm stud, equivalent to 1.43 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 threaded stud clamps directly into the machine bracket; over the roller running width the dynamic rating works out to 0.43 kN per millimetre of rolling-element complement within the 66 mm overall stud length mass is 400 g, or 0.13 g per mm² of the 47×66 mm track envelope — inertia that the drive must accelerate on every index of the cam with a 20 mm stud shank the 66 mm width and 28.5 kN C rating suit high-cycle industrial machinery rather than instrument duty The outer ring is axially guided by the rolling elements against the stud head and thrust washer; the clamping faces must be square so the 400 g roller runs without cantilever bending NUKRE is a double-row full-complement stud-type track roller: two cylindrical roller rows run on a heavy-section threaded stud, ready to bolt straight into a bracket Typical applications include agricultural and textile cam followers, packaging machine timing mechanisms and robotic arm linear axes, where the 47 mm track diameter and 28.5 kN dynamic rating match the duty. In agricultural and textile cam followers the threaded stud bolts directly to the frame, and in packaging machine timing mechanisms the 400 g mass keeps follower kinetics light. Designers also specify it for robotic arm linear axes, relying on the 66 mm stud length and the published 38 kN static rating. Never hammer the stud or use the hex socket as a press point during mounting; thread or socket damage renders the 66 mm stud unusable. Sealed PP/2RS followers are life-lubricated; open KR/NUKR executions need the stud greaseway serviced on a fixed interval.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Never hammer the stud or use the hex socket as a press point during mounting; thread or socket damage renders the 66 mm stud unusable.
• Sealed PP/2RS followers are life-lubricated; open KR/NUKR executions need the stud greaseway serviced on a fixed interval.
• The stud must be fully supported and the nut torqued to the catalogue value; a loose follower wears the bracket hole oval and loosens further.