NATR30-PP bearing: complete specifications & equivalents

The NATR30-PP is a ISO 15 radial bearing sized 30 x 62 x 29 mm (bore x OD x width) with 2RS sealing. Verify dimensions against the official catalog before ordering.

Bearing dimension schematic Front view shows outer diameter D and bore d; side section shows width B. D = 62 mm d = 30 B = 29 mm side section front view
Principal dimensions: bore d 30 mm, outer diameter D 62 mm, width B 29 mm. Schematic, not to scale.

Specification table

ParameterValue
Brand FAG
Bore diameter d 30 mm
Outer diameter D 62 mm
Width B 29 mm
Material GCr15
Seal / shield 2RS
Internal clearance CN
Tolerance class P0
Cage steel
Basic dynamic load rating C 23.2 kN
Basic static load rating C0 39.5 kN
Fatigue load limit Pu 5.3 kN
Limiting speed (mechanical) 1300 rpm
Operating temperature -40 to +120 °C
Mass 444 g
Manufacturer designation NATR30-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 & natr-series range

Bore d 1.181 in
Outer diameter D 2.441 in
Width B 1.142 in
ISO bore code —
Radial section height (D−d)/2 16 mm
Smallest bore in natr-series 5 mm
Largest outer diameter in natr-series 90 mm
Width range across natr-series 12–32 mm
Bore position in natr-series (smallest first) 10 of 13
Bore above smallest natr-series size 25 mm

Cross references & equivalents

Equivalent modelBrandMatch levelNote
NATR30 FAG partial
Main dimensions match; tolerances, seals or internal clearance differ.
Same envelope and mounting; open vs -PP sealed execution — the three-stage seal excludes contamination at the cost of a small drag torque and lower limiting speed.

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 NATR30-PP model number is decoded

envelope 30×62×29 mm: the 62 mm outside diameter is the track-running surface — a thick-walled outer ring over a 30 mm bore — and the 29 mm width sets the contact width on the mating track the catalogue lists C 23.2 kN and C0 39.5 kN for the NATR yoke-type track roller with cage and axial guidance; the C/C0 ratio of 0.59 reflects a rolling-element pack sized for heavy static track loading, and the 16.0 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 5.3 kN at 30 mm bore, equivalent to 0.77 kN of dynamic rating per millimetre — the limiting speed is 1,300 r/min and, as for HR1 track rollers, no thermal reference speed is published the 30 mm bore takes the mounting pin or shaft; across the 29 mm contact width the dynamic rating works out to 0.80 kN per millimetre of rolling-element complement mass is 444 g, or 0.25 g per mm² of the 62×29 mm track envelope — inertia that the drive must accelerate on every index of the cam the 30 mm pin bore falls in the small band, the workhorse size for gearbox planetary positions, hydraulic pumps and general cam and linkage duty The cage can be damaged by heavy shock loads even though the rollers would survive — size to C, not just envelope 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 30 mm inner-ring bore The PP seals make this a maintenance-free unit: the 23.2 kN C rating is slightly below the open execution because the seal recesses shorten the effective roller complement. Typical applications include automatic assembly machine carriages, automotive welding jig rollers and linear rail and profile track guidance, where the 62 mm track diameter and 23.2 kN dynamic rating match the duty. In automatic assembly machine carriages the unit fits a compact 30 mm seat, and in automotive welding jig rollers the 444 g mass keeps follower kinetics light. Designers also specify it for linear rail and profile track guidance, relying on the 29 mm width and the published 39.5 kN static rating. The crowned outer profile tolerates only small skew; a track that departs by more than the catalogue angle still causes edge loading. 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

  • cam drives and indexing tables
  • automatic assembly machine carriages
  • woodworking machine feed tracks
  • packaging machine timing mechanisms

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

  • The crowned outer profile tolerates only small skew; a track that departs by more than the catalogue angle still causes edge loading.
  • Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.
  • 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.

Frequently asked questions

What are the dimensions of the NATR30-PP?

The NATR30-PP is a NATR yoke-type track roller with cage and axial guidance with 62 mm outside diameter, 30 mm bore and 29 mm width, envelope 30×62×29 mm. Mass is 444 g.

What does the NATR30-PP designation mean in the FAG/INA HR1 catalogue?

NATR30-PP identifies this NATR yoke-type track roller with cage and axial guidance in the Schaeffler HR1 rolling bearings catalogue. The envelope is 30×62×29 mm and the catalogue ratings are C 23.2 kN, C0 39.5 kN, Cur 5.3 kN.

What is the load capacity of the NATR30-PP?

The basic dynamic load rating C is 23.2 kN and the basic static load rating C0 is 39.5 kN; the fatigue load limit Cur is 5.3 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 NATR30-PP?

HR1 lists a limiting speed of 1,300 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 NATR30-PP?

The track should be flat, harder than the roller contact and clean; the crowned 62 mm outer surface tolerates only small angular error. The inner ring lets the 30 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.