32205C bearing: complete specifications & equivalents
The 32205C 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 | 42.5 kN |
| Basic static load rating C0 | 46.5 kN |
| Limiting speed (mechanical) | 7100 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 192 g |
| Manufacturer designation | NTN 32205C |
| 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 | — |
| 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 |
|---|---|---|---|
| 32205C | 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 32205C model number is decoded
In NTN Ball and Roller Bearings CAT.No.2203E, the NTN order number 32205C denotes the heavy-section 32200 family of metric tapered roller bearings, 25 mm bore, 52 mm outside diameter and 19.25 mm assembled width T (0.984 × 2.047 × 0.758 in) to the ISO 355 boundary plan. Reading the designation: the leading five digits follow the ISO 355 metric plan (dimension family plus two-digit bore code), and 32205C resolves to 25 mm bore; the NTN factory mark 4T is stamped on cone and cup but is a brand mark, not a size code, so the catalogue sku is printed without it. The rollers run with their large ends against the cone's integral guide rib; the rib/end-flange contact carries the thrust component and is the reason lubricant must reach the rib face of 32205C, not only the raceway. Grease relubrication at 7,100 r/min limiting speed targets the rib contact; if the drive needs 9,400 r/min it must be arranged for oil lubrication with a defined flow to the large roller ends. Mount the 25 mm-bore cone on the shaft first (induction heat, max 120 °C), fit the cup square in its housing, then set preload or end play; never drive the cup home through the rollers of 32205C.
Typical equipment & failure modes
Common applications
- agricultural implement hubs and ground-tool drives
- small gearbox input shafts with combined load
- scooter and light-powersport wheel and gear positions
- small conveyor pulley shafts
Known failure patterns
- cup creep and housing fretting when the specified outer-ring press fit is not achieved
- rib scoring when axial load is carried beyond the cone rib capacity of the adjusted pair
- preload loss from racewear when one bearing of the paired set is replaced without re-adjusting end play
- cage fatigue when the pair is run continuously near the grease limiting speed without oil cooling
- fretting corrosion on a loose cone seat that creeps under rotating load
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 32205C 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 9,400 r/min oil ceiling.
- Minimum load matters at high speed: an unloaded 32205C at a large fraction of 7,100 r/min lets rollers skid and smear the cone rib; spring-preload lightly loaded pair arrangements.
- On slash-size and T-code bearings confirm the full code on both cone and cup before fitting: the 25 mm bore alone does not identify the cup, and a mismatched cone/cup set has no catalogue rating.
- Back-to-back and face-to-face arrangements react differently to shaft bending: pick the pair orientation for the moment load before locking the 25 mm shoulder geometry, because retrofitting flips the cups.
- The 42.5/46.5 kN ratings here are NTN Ball and Roller Bearings CAT.No.2203E figures for 32205C (ISO 355 5CD); 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 32205C?
32205C 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 42.5 kN, C0 46.5 kN (2203E prints no Pu for this size), grease limiting speed 7,100 r/min, oil speed 9,400 r/min, mass about 192 g. It is an open, separable cone/cup bearing with a pressed-steel cage.
What does the 4T prefix mean on 32205C?
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 (32205C); the lower-case 4t- factory spelling of the code is retained among the search aliases.
How does the 32205C designation encode the 25 mm bore and what is 5CD?
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. 5CD 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 32205C list two speeds, 7,100 and 9,400 r/min?
The lower figure, 7,100 r/min, is the grease-lubricated limiting speed — the mechanical ceiling for the cage, rollers and cone-rib contact. With oil lubrication NTN rates 32205C at 9,400 r/min because oil removes rib-contact heat better. Real limits still depend on preload, oil flow and cooling.
What does the suffix on 32205C mean?
Suffix reading on 32205C: the trailing A/C/D (or E1) letter marks an NTN contact-angle or internal-design revision of the base number, not a seal or clearance code; the suffix is part of the order number and the variants are not interchangeable articles.
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.