NATR6 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 NATR6 model number is decoded

envelope 6×19×12 mm: the 19 mm outside diameter is the track-running surface — a thick-walled outer ring over a 6 mm bore — and the 12 mm width sets the contact width on the mating track the catalogue lists C 3.5 kN and C0 4.05 kN for the NATR yoke-type track roller with cage and axial guidance; the C/C0 ratio of 0.86 reflects a rolling-element pack sized for heavy static track loading, and the 6.5 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 0.55 kN at 6 mm bore, equivalent to 0.58 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 6 mm bore takes the mounting pin or shaft; across the 12 mm contact width the dynamic rating works out to 0.29 kN per millimetre of rolling-element complement mass is 20 g, or 0.09 g per mm² of the 19×12 mm track envelope — inertia that the drive must accelerate on every index of the cam 6 mm pin bore and only 20 g: the smallest sizes demand accurate shaft geometry, because the 6.5 mm section leaves no tolerance for a soft or tapered seat At 6 mm bore and 20 g the roller mounts on a standard pin; yoke mounting means the pin, not a stud, carries the clamp load NATR is the caged yoke-type track roller: a needle roller and cage assembly runs inside the rib-guided thick-walled outer ring on the 6 mm inner-ring bore Typical applications include cam drives and indexing tables, printing press sheet-transfer grippers and woodworking machine feed tracks, where the 19 mm track diameter and 3.5 kN dynamic rating match the duty. In cam drives and indexing tables the unit fits a compact 6 mm seat, and in printing press sheet-transfer grippers the 20 g mass keeps follower kinetics light. Designers also specify it for woodworking machine feed tracks, relying on the 12 mm width and the published 4.05 kN static rating. Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam. The crowned outer profile tolerates only small skew; a track that departs by more than the catalogue angle still causes edge loading.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.
• The crowned outer profile tolerates only small skew; a track that departs by more than the catalogue angle still causes edge loading.
• The pin or shaft is part of the bearing system: harden it for RSTO/RNA22 positions, and size its deflection because the roller cannot compensate for a bent pin.