NATR-5 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 15 support rollers / ch. 16 cam followers) · extracted 2026-09-30

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 15 support rollers / ch. 16 cam followers); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.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 NATR-5 model number is decoded

the 16 mm outside diameter runs on the track while the 5 mm bore takes the pin or shaft; the 12 mm overall width spreads the Hertzian contact over the outer ring published ratings C 3.14 kN and C0 3.2 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.98 is typical for support roller with flange rings, with inner ring executions fatigue load limit Pu 0.345 kN at 5 mm bore gives a specific load of 0.63 kN per mm; the limiting speed is 6,000 r/min the 12 mm width carries the load at 0.26 kN per mm of roller complement; section height 5.5 mm between bore and track surface determines the outer-ring bending stiffness mass 14 g over a 16x12 mm envelope works out to 0.073 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-high-speed cam duty at 5 mm bore this sits in the miniature band of the range, where the compact envelope suits tight cam tracks and light-duty indexing mechanisms NATR adds pressed-on flange rings to the basic support roller; these locate the roller axially and absorb light side thrust, but they are not designed for continuous axial load typical applications include textile machine cam drives, agricultural equipment cam followers and packaging machine timing cams this size is commonly specified for textile machine cam drives and agricultural equipment cam followers, where the 16 mm track diameter and 5 mm bore fit standard cam and rail geometries in packaging machine timing cams the 16 mm outer ring provides the rolling contact while the inner ring bore simplifies mounting; the 14 g mass is low enough for rapid indexing cycles do not use the flange faces as thrust surfaces for external components — the pressed joint is designed for guidance, not for transmitting axial force the cage material is typically polyamide or steel; at temperatures above 100 degC polyamide cages soften and lose guidance function

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• the flange rings are a press fit on the inner ring; excessive axial preload during mounting can shift them and alter the internal clearance
• do not use the flange faces as thrust surfaces for external components — the pressed joint is designed for guidance, not for transmitting axial force
• the cage material is typically polyamide or steel; at temperatures above 100 degC polyamide cages soften and lose guidance function