32207 bearing: complete specifications & equivalents
The 32207 is a ISO 355 radial bearing sized 35 x 72 x 24.25 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Bore diameter d | 35 mm |
| Outer diameter D | 72 mm |
| Width B | 24.25 mm |
| Seal / shield | open |
| Internal clearance | CN available |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Operating temperature | -30 to +120 °C |
| Mass (geometry estimate) | 385 g |
| Standard | ISO 355 |
| Catalog version | iso355-geometry |
| Last verified | 2026-09-24 |
Source: ISO 15 boundary-dimensions standard · extracted 2026-09-24
Standard-interchange bearing: dimensions per ISO 15; CN clearance, P0 tolerance and a stamped-steel cage are catalogue defaults unless the supplier states otherwise, and mass is a geometry-derived estimate. Brand catalogue load ratings and limiting speeds for 32207 are being backfilled — use the inquiry form for certified values.
Dimensions in inches & 32200-series range
| Bore d | 1.378 in |
|---|---|
| Outer diameter D | 2.835 in |
| Width B | 0.955 in |
| ISO bore code | 07 |
| Radial section height (D−d)/2 | 18.5 mm |
| Smallest bore in 32200-series | 20 mm |
| Largest outer diameter in 32200-series | 200 mm |
| Width range across 32200-series | 19–56 mm |
| Bore position in 32200-series (smallest first) | 4 of 19 |
| Bore above smallest 32200-series size | 15 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32207 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) 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 32207 model number is decoded
In the 32200-series the last two digits of 32207 encode the bore: code 07 = 35 mm (code × 5 from 04 upward). The ISO 355 envelope is 72 mm outside diameter and 24.25 mm total assembly width T over the separable cone and cup — 1.378 × 2.835 × 0.955 in, with a 18.5 mm radial section height. Tapered rollers carry combined radial and single-direction axial load; bidirectional thrust needs an opposed pair (X face-to-face or O back-to-back) adjusted at fit-up. With a rotating cone on a 35 mm shaft, typical catalogue practice is a k5 shaft seat with an H7 housing bore, EP lubrication and a defined end-play setting — verify against the load direction and magnitude.
Typical equipment & failure modes
Common applications
- agricultural implement wheels
- passenger-car wheel hubs
- small trailer axles
- light differential pinions
- steering knuckles
Known failure patterns
- false brinelling from vibration while the axle is stationary during transport
- fretting corrosion on a loose shaft seat when the cone is pressed to an interference that relaxes with wear
- cup creep and housing bore fretting when the outer ring is left without its specified press fit
- roller large-end smearing and scoring against the inner-ring guide rib from loss of the EP lubricant film
- raceway spalling at the roller-rib junction after the L10 life or sustained axial overload
Selection pitfalls — read before you substitute
- At 35 mm bore the small 32207 is commonly factory-adjusted in a hub unit; an after-market fit-up must reproduce the specified end play (a typical starting range of 0.02–0.10 mm at the 35 mm shaft) or the wheel runs hot within the first hundred kilometres.
- The 322 medium series at 35 mm bore (72×24.25 mm) gains roller length and load over the 30207 on the same OD; the wider 24.25 mm assembly needs a wider housing shoulder and changes the pinion offset in a differential.
- Before fitting 32207, machine the 35 mm shaft seat and 72 mm housing bore with a relief or small fillet so nothing bridges the bearing chamfer; the 24.25 mm-wide cone and cup only load correctly when the full faces abut, and a large radius pinches the 18.5 mm radial section.
- The 32207 cup drives into the 72 mm housing bore with a sleeve against its outer face only; pressure on the inner ring or cage transfers through the rollers and leaves indentations that become spalls within the 24.25 mm load zone.
- Relubrication for 32207 must reach the rib-roller end contact, not just the 35 mm bore; in a hub repack, work EP grease through the roller set until it exudes at both faces of the 24.25 mm-wide assembly or the sliding rib contact starves first.
- The cone and the cup of 32207 are separable: order and fit them as a matched set; never mix a cone from one manufacturer with another brand's cup — roller geometry and contact angle are not identical across brands.
- Set running clearance (or preload) with the shim pack or adjusting nut at fit-up; a 35 mm-bore 32207 that is too tight overheats and scores the rib, one too loose develops end play and noise — follow the torque-and-untighten procedure.
Frequently asked questions
What are the dimensions of a 32207 tapered roller bearing?
A 32207 single-row metric tapered roller bearing per ISO 355 has a 35 mm bore, 72 mm outer diameter and 24.25 mm total assembly width (1.378 × 2.835 × 0.955 in), a 18.5 mm radial section and roughly 385 g geometry-based estimated mass; catalogue masses vary with roller and cage design.
How does the 32207 bore code work?
The last two digits of 32207 are bore code 07, giving 07 × 5 = 35 mm bore — the same convention as 6xx ball bearings, starting at code 04 (20 mm). The 72 mm OD and 24.25 mm width come from the ISO 355 diameter and width series, not the bore code alone.
What is the cone and cup of 32207?
Tapered roller bearings are separable: the cone is the inner ring with the tapered rollers and cage, the cup is the outer ring. 32207 denotes a matched cone-and-cup set. They are fitted separately — cone pressed on the shaft, cup in the housing — and adjusted against each other.
How is the preload or clearance of 32207 set?
At fit-up the 35 mm-bore cone is tightened against the cup while the hub is rotated, seated, then backed off to the specified end play — a typical starting range of 0.02–0.10 mm for a 35 mm bore — and locked with shims, a locknut or a spacer. Too tight overheats and seizes the rib; too loose causes skid, noise and early wear. Confirm the exact figure in the hub or axle-maker procedure.
Can 32207 take axial load in both directions?
A single 32207 takes thrust in one direction only — the roller large ends bear against the inner-ring rib under load. Bidirectional axial load requires an opposed pair: X (face-to-face) tolerates misalignment slightly better, O (back-to-back) gives a wider load centre and more moment stiffness.
Reviewed & verified by the MPN Base engineering desk against source catalog iso355-geometry on 2026-09-24. Read our editorial & correction policy.