32205-NTN bearing: complete specifications & equivalents
The 32205-NTN 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 |
|---|---|
| Brand | NTN |
| Bore diameter d | 25 mm |
| Outer diameter D | 52 mm |
| Width B | 19.25 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 46.5 kN |
| Basic static load rating C0 | 47 kN |
| Limiting speed (mechanical) | 7300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 187 g |
| Manufacturer designation | NTN 32205 |
| Standard | ISO 355 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203E |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); NTN® is a trademark of NTN Corporation, used here for identification only — mpnbase is not an authorized NTN distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at ntnglobal.com.
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 | 17 mm |
| Largest outer diameter in 32200-series | 580 mm |
| Width range across 32200-series | 17.25–159 mm |
| Bore position in 32200-series (smallest first) | 3 of 36 |
| Bore above smallest 32200-series size | 8 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32205 | FAG | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
| 32205-SKF | SKF | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
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-NTN model number is decoded
32205 is a metric single-row tapered roller bearing in the NTN 4T programme: a pressed-steel cage guides profiled rollers between a separable cone and cup on the 25×52 mm ISO 355 envelope, with 19.25 mm overall assembled width T. On the NTN nameplate the parts carry 4T plus the bare code, while 2203E orders 32205 by the metric ISO 355 number (ISO series abbreviation 2CD): 25 mm bore, 52 mm OD. NTN grades 4T metric bearings as open bearings without integral seals; at 25 mm bore the application supplies the seals and the grease fill or oil supply to the 2CD ISO 355 assembly. Speed planning uses both catalogue columns: grease 7,300 r/min is the cage/rib mechanical ceiling for 32205, oil 9,800 r/min is available with circulating oil — a 2,500 r/min margin at this size. When pairing 32205 with a second tapered bearing, keep the matched arrangement clean: a single stray grit particle between cup and housing changes preload faster than the adjustment range can correct.
Typical equipment & failure modes
Common applications
- light-vehicle differential and pinion shafts
- agricultural implement hubs and ground-tool drives
- small gearbox input shafts with combined load
- scooter and light-powersport wheel and gear positions
Known failure patterns
- cone-raceway spalling at the large rib when preload is set too high for the lubricant film
- smearing on the roller large ends and cone rib after a dry start with preload but no oil film
- flaking on one cone only when a back-to-back / face-to-face pair is loaded unevenly by a bent shaft
- cage damage from a mounting blow delivered through the roller complement instead of the ring face
- indentation of the raceways by hard particles in unsealed open arrangements
Selection pitfalls — read before you substitute
- At 25 mm bore the thin section and small rollers are adjustment-sensitive: a quarter-turn of the locknut moves end play by more than on large bearings, so set the 32205 pair with a dial indicator rather than by feel.
- The heavy-section 32200 family at 25 mm bore (52×19.25 mm assembled) carries more capacity than the lighter 320/329 sections but generates more preload heat; confirm oil availability before running near the 9,800 r/min oil ceiling.
- Open 32205 units have no seals: a wheel-hub or gearbox application needs external sealing or the 7,300 r/min grease figure is meaningless once water reaches the cone rib.
- The U/UTG/X/C/CA/D suffix variants of a base number share the bore but not the article: ordering 32205 by size alone can deliver the wrong contact-angle execution for a pinion position.
- The 13.5 mm section leaves little room for an oversized shaft fillet; check the mounting-chamfer table for 32205 or the ring will bottom out on the radius instead of the shoulder face.
- The 46.5/47 kN ratings here are NTN Ball and Roller Bearings CAT.No.2203E figures for 32205 (ISO 355 2CD); internal geometry legitimately differs between manufacturers, so re-verify ratings, adjustment and suffix before substituting another make on a rated drive.
Frequently asked questions
What are the dimensions and catalogue ratings of NTN 32205?
32205 is a metric 4T tapered roller bearing to ISO 355: 25 mm bore, 52 mm outside diameter and 19.25 mm assembled width T (0.984 × 2.047 × 0.758 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 46.5 kN, C0 47 kN (2203E prints no Pu for this size), grease limiting speed 7,300 r/min, oil speed 9,800 r/min, mass about 187 g. It is an open, separable cone/cup bearing with a pressed-steel cage.
What does the 4T prefix mean on 32205?
4T is NTN's tapered roller bearing brand mark, stamped on the cone and cup in the factory. It identifies the NTN 4T programme and is not a dimension, so the catalogue and this page list the bare ISO 355 number (32205); the lower-case 4t- factory spelling of the code is retained among the search aliases.
How does the 32205 designation encode the 25 mm bore and what is 2CD?
last two digits 05 are the ISO bore code, ×5 = 25 mm (codes 00–03 use the 10/12/15/17 exception table). The 52 mm OD and 19.25 mm assembled T follow the ISO 355 dimension-series plan. 2CD is the maker-neutral ISO 355 abbreviation for this dimension series (the same code other manufacturers print); 4T is NTN's own brand mark.
Why does 32205 list two speeds, 7,300 and 9,800 r/min?
The lower figure, 7,300 r/min, is the grease-lubricated limiting speed — the mechanical ceiling for the cage, rollers and cone-rib contact. With oil lubrication NTN rates 32205 at 9,800 r/min because oil removes rib-contact heat better. Real limits still depend on preload, oil flow and cooling.
What does the suffix on 32205 mean?
It is the basic open 4T execution — steel cage, adjusted mounting, no seal or feature suffix. NTN uses U for the uprated design, UTG for ULTAGE large-bearing specs, X for the ISO boundary section, and C/CA/D/A for contact-angle or internal-design variants; all are separate order numbers.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203E on 2026-10-01. Read our editorial & correction policy.