NATV-12-PPA 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 NATV-12-PPA model number is decoded

the 32 mm outside diameter runs on the track while the 12 mm bore takes the pin or shaft; the 15 mm overall width spreads the Hertzian contact over the outer ring published ratings C 9.35 kN and C0 15.3 kN already include the bending-stress correction for the unsupported outer ring — the C/C0 ratio of 0.61 is typical for full-complement support roller with flange rings, with inner ring executions fatigue load limit Pu 1.76 kN at 12 mm bore gives a specific load of 0.78 kN per mm; the limiting speed is 3,000 r/min the 15 mm width carries the load at 0.62 kN per mm of roller complement; section height 10.0 mm between bore and track surface determines the outer-ring bending stiffness mass 69 g over a 32x15 mm envelope works out to 0.144 g per mm² of projected area — a useful figure when sizing the drive inertia for medium-speed cam duty at 12 mm bore this size balances load capacity and envelope compactness — a frequent pick for packaging machines and printing press linkages NATV is the full-complement counterpart of NATR: no cage, more needle rollers, higher static capacity C0 15.3 kN, but a lower limiting speed 3000 r/min because of roller-to-roller friction the PPA suffix specifies a crowned (radius) outer-ring running surface instead of the standard cylindrical profile — the crown distributes edge stress when the track is not perfectly aligned typical applications include packaging machine timing cams, glass processing line conveyors and linear guide and track systems this size is commonly specified for packaging machine timing cams and glass processing line conveyors, where the 32 mm track diameter and 12 mm bore fit standard cam and rail geometries in linear guide and track systems the 32 mm outer ring provides the rolling contact while the inner ring bore simplifies mounting; the 69 g mass is low enough for rapid indexing cycles the absence of a cage increases friction torque; check that the cam drive can overcome the drag at low speed in oscillating applications the rollers can brinell if the stroke is too short to rotate the full complement; ensure the motion profile rotates the rollers through at least one full revolution

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• without a cage the rollers can skew under momentary unloading, leading to edge loading and premature raceway pitting
• the absence of a cage increases friction torque; check that the cam drive can overcome the drag at low speed
• the higher static capacity invites overloading; remember the dynamic C rating still governs fatigue life