32205 bearing: complete specifications & equivalents
The 32205 is a ISO 355 radial bearing sized 25 x 52 x 19.25 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Bore diameter d | 25 mm |
| Outer diameter D | 52 mm |
| Width B | 19.25 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) | 160 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 32205 are being backfilled — use the inquiry form for certified values.
Dimensions in inches & 32200-series range
| Bore d | 0.984 in |
|---|---|
| Outer diameter D | 2.047 in |
| Width B | 0.758 in |
| ISO bore code | 05 |
| Radial section height (D−d)/2 | 13.5 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) | 2 of 19 |
| Bore above smallest 32200-series size | 5 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32205 | 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 32205 model number is decoded
In the 32200-series the last two digits of 32205 encode the bore: code 05 = 25 mm (code × 5 from 04 upward). The ISO 355 envelope is 52 mm outside diameter and 19.25 mm total assembly width T over the separable cone and cup — 0.984 × 2.047 × 0.758 in, with a 13.5 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 25 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
- steering knuckles
- small gearbox shafts
- agricultural implement wheels
- passenger-car wheel hubs
- small trailer axles
Known failure patterns
- under-preload end play that lets the rollers skid, producing noise and false brinelling
- water and grit pitting in unsealed hubs where the cup-cone joint acts as a debris entry path
- 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
Selection pitfalls — read before you substitute
- At 25 mm bore the small 32205 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 25 mm shaft) or the wheel runs hot within the first hundred kilometres.
- The 322 medium series at 25 mm bore (52×19.25 mm) gains roller length and load over the 30205 on the same OD; the wider 19.25 mm assembly needs a wider housing shoulder and changes the pinion offset in a differential.
- Check the shoulder geometry for 32205: a generous fillet on the 25 mm shaft looks strong but stops the 19.25 mm ring seating home; use the catalogue corner-relief radius and provide a withdrawal groove so the 13.5 mm-section cup presses flush in the 52 mm housing.
- Never fit 32205 by tightening the adjuster to force the cone up the 25 mm taper — draw the nut to seat the rollers, then back it off; the 19.25 mm total width is set by the cup-cone stack, and pushing beyond it is the common cause of seized ribs.
- Inspect the removed 32205 cone and cup as a pair: pitting on the 52 mm cup with a clean cone usually means seal failure and water ingress, while rib scoring on the 25 mm cone points to wrong preload or lost EP film — the two faults need different corrections.
- Assign fits by which ring rotates: an interference shaft fit for a rotating cone; if the cup rotates instead, reverse the logic — a loose rotating ring creeps and frets its seat.
- A single 32205 takes thrust in ONE direction — the rollers roll toward the rib under load, so reverse thrust unloads the contact. For a wheel or pinion use an opposing 322-series pair adjusted against each other.
Frequently asked questions
What are the dimensions of a 32205 tapered roller bearing?
A 32205 single-row metric tapered roller bearing per ISO 355 has a 25 mm bore, 52 mm outer diameter and 19.25 mm total assembly width (0.984 × 2.047 × 0.758 in), a 13.5 mm radial section and roughly 160 g geometry-based estimated mass; catalogue masses vary with roller and cage design.
How does the 32205 bore code work?
The last two digits of 32205 are bore code 05, giving 05 × 5 = 25 mm bore — the same convention as 6xx ball bearings, starting at code 04 (20 mm). The 52 mm OD and 19.25 mm width come from the ISO 355 diameter and width series, not the bore code alone.
What is the cone and cup of 32205?
Tapered roller bearings are separable: the cone is the inner ring with the tapered rollers and cage, the cup is the outer ring. 32205 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 32205 set?
At fit-up the 25 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 25 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 32205 take axial load in both directions?
A single 32205 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.