KRV40-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 KRV40-PP model number is decoded

envelope 18×40×58 mm: the 40 mm outside diameter is the track-running surface — a thick-walled outer ring over a 18 mm stud — and the 58 mm overall stud-and-roller length sets the required bracket clearance the catalogue lists C 14.7 kN and C0 27 kN for the KRV full-complement stud-type cam follower; the C/C0 ratio of 0.54 reflects a rolling-element pack sized for heavy static track loading, and the 11.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 3.55 kN at 18 mm stud, equivalent to 0.82 kN of dynamic rating per millimetre — the limiting speed is 1,400 r/min and, as for HR1 track rollers, no thermal reference speed is published the 18 mm threaded stud clamps directly into the machine bracket; over the roller running width the dynamic rating works out to 0.25 kN per millimetre of rolling-element complement within the 58 mm overall stud length mass is 247 g, or 0.11 g per mm² of the 40×58 mm track envelope — inertia that the drive must accelerate on every index of the cam the 18 mm stud shank falls in the small band, the workhorse size for gearbox planetary positions, hydraulic pumps and general cam and linkage duty The standard stud axis fixes the roller centre; shimming the bracket faces is the way to adjust track preload KRV is the full-complement stud-type cam follower: a cageless needle pack maximises C0 27 kN inside the 40 mm outer ring on the 18 mm stud -PP protection suits cams and rails that are washed down or run in dust; exceeding the 1,400 r/min speed ceiling overheats the lips rather than just accelerating wear. Typical applications include cam drives and indexing tables, printing press sheet-transfer grippers and woodworking machine feed tracks, where the 40 mm track diameter and 14.7 kN dynamic rating match the duty. In cam drives and indexing tables the threaded stud bolts directly to the frame, and in printing press sheet-transfer grippers the 247 g mass keeps follower kinetics light. Designers also specify it for woodworking machine feed tracks, relying on the 58 mm stud length and the published 27 kN static rating. 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.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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.
• 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.