KR19-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 KR19-PP model number is decoded

envelope 8×19×32 mm: the 19 mm outside diameter is the track-running surface — a thick-walled outer ring over a 8 mm stud — and the 32 mm overall stud-and-roller length sets the required bracket clearance the catalogue lists C 3.5 kN and C0 4.05 kN for the KR stud-type cam follower with needle roller and cage assembly; the C/C0 ratio of 0.86 reflects a rolling-element pack sized for heavy static track loading, and the 5.5 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 0.55 kN at 8 mm stud, equivalent to 0.44 kN of dynamic rating per millimetre — the limiting speed is 11,000 r/min and, as for HR1 track rollers, no thermal reference speed is published the 8 mm threaded stud clamps directly into the machine bracket; over the roller running width the dynamic rating works out to 0.11 kN per millimetre of rolling-element complement within the 32 mm overall stud length mass is 29 g, or 0.05 g per mm² of the 19×32 mm track envelope — inertia that the drive must accelerate on every index of the cam 8 mm stud shank and only 29 g: the smallest sizes demand accurate shaft geometry, because the 5.5 mm section leaves no tolerance for a soft or tapered seat KR is the stud-type cam follower with a needle roller and cage assembly: the 8 mm threaded stud bolts into the bracket and the 19 mm crowned outer ring follows the cam The stud must be fully supported and torqued against a flat bracket face; an under-supported cantilever stud bends under the 4.05 kN static rating and skews the outer ring -PP means sealed both sides with elastomer lips — the roller is greased for life and needs no relubrication fitting in the 32 mm width. Typical applications include linear rail and profile track guidance, automatic assembly machine carriages and glass and ceramic line conveyors, where the 19 mm track diameter and 3.5 kN dynamic rating match the duty. In linear rail and profile track guidance the threaded stud bolts directly to the frame, and in automatic assembly machine carriages the 29 g mass keeps follower kinetics light. Designers also specify it for glass and ceramic line conveyors, relying on the 32 mm stud length and the published 4.05 kN static rating. 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.

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.
• 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.
• Never hammer the stud or use the hex socket as a press point during mounting; thread or socket damage renders the 32 mm stud unusable.