NATV40-PP bearing: complete specifications & equivalents
The NATV40-PP is a ISO 15 radial bearing sized 40 x 80 x 32 mm (bore x OD x width) with 2RS sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | FAG |
| Bore diameter d | 40 mm |
| Outer diameter D | 80 mm |
| Width B | 32 mm |
| Material | GCr15 |
| Seal / shield | 2RS |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 40 kN |
| Basic static load rating C0 | 89 kN |
| Fatigue load limit Pu | 13.2 kN |
| Limiting speed (mechanical) | 650 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 832 g |
| Manufacturer designation | NATV40-PP |
| Standard | ISO 15 |
| Catalog version | HR1 2026-09-25 |
| Last verified | 2026-09-30 |
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.
Dimensions in inches & natv-series range
| Bore d | 1.575 in |
|---|---|
| Outer diameter D | 3.15 in |
| Width B | 1.26 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 20 mm |
| Smallest bore in natv-series | 5 mm |
| Largest outer diameter in natv-series | 90 mm |
| Width range across natv-series | 12–32 mm |
| Bore position in natv-series (smallest first) | 12 of 13 |
| Bore above smallest natv-series size | 35 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NATV40 | ISO 15 | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | ISO 15 boundary-dimension envelope; seal suffix convention varies by brand (2RS / DDU / LLU / 2RSR) — verify seal design and temperature range. Brand-specific OEM equivalents pending multi-source data. |
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 NATV40-PP model number is decoded
envelope 40×80×32 mm: the 80 mm outside diameter is the track-running surface — a thick-walled outer ring over a 40 mm bore — and the 32 mm width sets the contact width on the mating track the catalogue lists C 40 kN and C0 89 kN for the NATV full-complement yoke-type track roller with axial guidance; the C/C0 ratio of 0.45 reflects a rolling-element pack sized for heavy static track loading, and the 20.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 13.2 kN at 40 mm bore, equivalent to 1.00 kN of dynamic rating per millimetre — the limiting speed is 650 r/min and, as for HR1 track rollers, no thermal reference speed is published the 40 mm bore takes the mounting pin or shaft; across the 32 mm contact width the dynamic rating works out to 1.25 kN per millimetre of rolling-element complement mass is 832 g, or 0.33 g per mm² of the 80×32 mm track envelope — inertia that the drive must accelerate on every index of the cam at 40 mm pin bore this is a mainstream industrial size — conveyor drives, winches and medium gearboxes use the 32 mm width as a standard mounting space The cageless rollers can brinell on very short oscillating strokes — the motion must rotate the full pack, not just rock it At 40 mm bore and 832 g the roller mounts on a standard pin; yoke mounting means the pin, not a stud, carries the clamp load Reading -PP: rubbing seals at each face of the 80 mm outer ring; they protect the rolling-element pack in abrasive track environments at the cost of a small drag torque. Typical applications include woodworking machine feed tracks, cam drives and indexing tables and packaging machine timing mechanisms, where the 80 mm track diameter and 40 kN dynamic rating match the duty. In woodworking machine feed tracks the unit fits a compact 40 mm seat, and in cam drives and indexing tables the 832 g mass keeps follower kinetics light. Designers also specify it for packaging machine timing mechanisms, relying on the 32 mm width and the published 89 kN static rating. Sealed PP/2RSR units are greased for life: never add a grease nipple, and respect the lower limiting speed imposed by the rubbing lips. Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.
Typical equipment & failure modes
Common applications
- woodworking machine feed tracks
- linear rail and profile track guidance
- packaging machine timing mechanisms
- agricultural and textile cam followers
Known failure patterns
- outer-ring fatigue cracking across the unsupported track zone under excessive static load
- track-side brinelling when the mating rail is softer than the roller running surface
- flat spots from standing loads or very short oscillating strokes on full-complement rollers
- seal lip failure and grease loss after sustained running above the limiting speed (PP/2RSR executions)
- edge wear from skewed tracks that exceed the crowned-profile correction range
- pin-seat fretting where a hard journal requirement (RSTO/RNA22) was met with a soft pin
- roller walk-off in flangeless STO/RSTO executions with uncontrolled lateral float
- contamination entry through open sides in dusty or wash-down environments
- cage fracture in caged NATR/STO rollers exposed to heavy shock
Selection pitfalls — read before you substitute
- Sealed PP/2RSR units are greased for life: never add a grease nipple, and respect the lower limiting speed imposed by the rubbing lips.
- 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.
Frequently asked questions
What are the dimensions of the NATV40-PP?
The NATV40-PP is a NATV full-complement yoke-type track roller with axial guidance with 80 mm outside diameter, 40 mm bore and 32 mm width, envelope 40×80×32 mm. Mass is 832 g.
What does the NATV40-PP designation mean in the FAG/INA HR1 catalogue?
NATV40-PP identifies this NATV full-complement yoke-type track roller with axial guidance in the Schaeffler HR1 rolling bearings catalogue. The envelope is 40×80×32 mm and the catalogue ratings are C 40 kN, C0 89 kN, Cur 13.2 kN.
What is the load capacity of the NATV40-PP?
The basic dynamic load rating C is 40 kN and the basic static load rating C0 is 89 kN; the fatigue load limit Cur is 13.2 kN. For track rollers these values already cover the thick-walled outer ring bending case on an unsupported track.
What is the maximum speed of the NATV40-PP?
HR1 lists a limiting speed of 650 r/min for track rollers and no thermal reference speed. The crowned thick-walled outer ring and (on stud types) the stud contact make the limiting speed the governing figure.
What must the mating track and pin look like for the NATV40-PP?
The track should be flat, harder than the roller contact and clean; the crowned 80 mm outer surface tolerates only small angular error. The inner ring lets the 40 mm pin run at normal machined tolerance; lateral guidance comes from the adjacent structure on flangeless executions.
Reviewed & verified by the MPN Base engineering desk against source catalog HR1 2026-09-25 on 2026-09-30. Read our editorial & correction policy.