KR72-PP 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 KR72-PP model number is decoded

envelope 24×72×80 mm: the 72 mm outside diameter is the track-running surface — a thick-walled outer ring over a 24 mm stud — and the 80 mm overall stud-and-roller length sets the required bracket clearance the catalogue lists C 28 kN and C0 53 kN for the KR stud-type cam follower with needle roller and cage assembly; the C/C0 ratio of 0.53 reflects a rolling-element pack sized for heavy static track loading, and the 24.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 7.3 kN at 24 mm stud, equivalent to 1.17 kN of dynamic rating per millimetre — the limiting speed is 1,900 r/min and, as for HR1 track rollers, no thermal reference speed is published the 24 mm threaded stud clamps directly into the machine bracket; over the roller running width the dynamic rating works out to 0.35 kN per millimetre of rolling-element complement within the 80 mm overall stud length mass is 1.01 kg (1010 g), or 0.18 g per mm² of the 72×80 mm track envelope — inertia that the drive must accelerate on every index of the cam the 24 mm stud shank falls in the small band, the workhorse size for gearbox planetary positions, hydraulic pumps and general cam and linkage duty Reading KR/KRV/KRE: stud-type needle cam followers with PP lip seals on both sides and a 80 mm overall stud length KR is the stud-type cam follower with a needle roller and cage assembly: the 24 mm threaded stud bolts into the bracket and the 72 mm crowned outer ring follows the cam -PP means sealed both sides with elastomer lips — the roller is greased for life and needs no relubrication fitting in the 80 mm width. Typical applications include packaging machine timing mechanisms, woodworking machine feed tracks and agricultural and textile cam followers, where the 72 mm track diameter and 28 kN dynamic rating match the duty. In packaging machine timing mechanisms the threaded stud bolts directly to the frame, and in woodworking machine feed tracks the 1.01 kg mass is part of the rotor inertia calculation. Designers also specify it for agricultural and textile cam followers, relying on the 80 mm stud length and the published 53 kN static rating. 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. 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

• 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.
• The eccentric collar throw is small (typically around 1 mm); it removes clearance, it cannot repair a grossly misplaced bracket.
• 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.