KR35 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 KR35 model number is decoded

envelope 16×35×52 mm: the 35 mm outside diameter is the track-running surface — a thick-walled outer ring over a 16 mm stud — and the 52 mm overall stud-and-roller length sets the required bracket clearance the catalogue lists C 9.7 kN and C0 14.5 kN for the KR stud-type cam follower with needle roller and cage assembly; the C/C0 ratio of 0.67 reflects a rolling-element pack sized for heavy static track loading, and the 9.5 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 1.86 kN at 16 mm stud, equivalent to 0.61 kN of dynamic rating per millimetre — the limiting speed is 3,600 r/min and, as for HR1 track rollers, no thermal reference speed is published the 16 mm threaded stud clamps directly into the machine bracket; over the roller running width the dynamic rating works out to 0.19 kN per millimetre of rolling-element complement within the 52 mm overall stud length mass is 173 g, or 0.10 g per mm² of the 35×52 mm track envelope — inertia that the drive must accelerate on every index of the cam with a 16 mm stud shank the 52 mm width and 9.7 kN C rating suit high-cycle industrial machinery rather than instrument duty Reading KR/KRV/KRE: stud-type needle cam followers in the open execution and a 52 mm overall stud length The standard stud axis fixes the roller centre; shimming the bracket faces is the way to adjust track preload Typical applications include conveyor transfer and diverting stations, robotic arm linear axes and automotive welding jig rollers, where the 35 mm track diameter and 9.7 kN dynamic rating match the duty. In conveyor transfer and diverting stations the threaded stud bolts directly to the frame, and in robotic arm linear axes the 173 g mass keeps follower kinetics light. Designers also specify it for automotive welding jig rollers, relying on the 52 mm stud length and the published 14.5 kN static rating. On eccentric KRE/NUKRE/PWKRE units, re-torque after setting the collar — the adjustment changes the effective stud engagement. The eccentric collar throw is small (typically around 1 mm); it removes clearance, it cannot repair a grossly misplaced bracket.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• On eccentric KRE/NUKRE/PWKRE units, re-torque after setting the collar — the adjustment changes the effective stud engagement.
• The eccentric collar throw is small (typically around 1 mm); it removes clearance, it cannot repair a grossly misplaced bracket.
• Use a washer under the nut and a flat square bracket face; the stud head alone cannot spread the clamp load of the heavy double-row executions.