# Tapered roller bearings, metric (30203 to 32328, ISO 355): bore, OD, T, B, C and chamfer r, 15 to 140 mm (302xx, 303xx, 320xx, 322xx, 323xx, 329xx)

> What are the dimensions of a 30205, 30206, 30207, 32207 or 30305 tapered roller bearing: bore, OD, overall width T, cone width B and cup width C?

- Category: Hardware › Bearings, rails & motion
- Kind: Standard part
- Basis: Koyo (JTEKT) metric tapered roller bearing catalogue rows (J series), agreeing with Timken's 30205 sheet, four AIMS / JTEKT product pages and NSK's HR32205C; CAD at Timken
- Page: https://xemstudio.com/objects/tapered-roller-bearings-metric-iso-355/ · JSON: https://xemstudio.com/api/geometry?object=tapered-roller-bearings-metric-iso-355 · Plain text: https://xemstudio.com/objects/tapered-roller-bearings-metric-iso-355/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part.

## Notes

- Metric single-row tapered roller bearings (ISO 355): a cone (inner ring) with rollers and a cup (outer ring) that come apart. The table gives the boundary dimensions: bore d, outside diameter D, overall (assembled) width T, cone width B, cup width C, and the minimum chamfer sizes r and r1. The bore code is the last two digits times 5 from 04 up (30204 = 20 mm, 30205 = 25 mm, 30206 = 30 mm). Reading the table: at the same bore a 303xx has a larger OD than a 302xx; 322xx and 323xx have the same OD as 302xx and 303xx but are wider (larger T, B and C); 320xx and 329xx are the slimmer, larger-bore-for-OD series.
- Numbers: Koyo (JTEKT) metric tapered roller bearing catalogue pages as printed on AIMS Industrial's PDFs, using the J-series rows (the ISO main dimensions) for 15 to 140 mm bores. Cross-checks that agree: Timken's own 30205 data sheet (25 x 52 x 16.25, B 15, C 13 equal the Koyo 30205JR row); AIMS's JTEKT product pages for 30203JR (17 x 40 x 13.25), 32204JR (20 x 47 x 19.25), 32004JR (20 x 42 x 15) and 32303JR (17 x 47 x 20.25); NSK's HR32205C (25 x 52 x 19.25, B 18) equals the 32205JR row for d, D, T and B.
- Cup width C is the soft number: it is maker- and series-specific. NSK's high-capacity HR32205C has C = 15 where Koyo's 32205JR has C = 16, and Koyo's own 32205XR, 32204XR, 30209XR and 30205XR rows carry a different C from the JR rows (for example 30205XR C = 12, 30205JR C = 13; 30206CR C = 13, 30206JR C = 14). d, D, T and B do not change with the variant in these rows. Use C from the maker of the part you buy before you design a cup shoulder.
- Files: none. A tapered roller bearing's cone and cup are shaped by the raceway angle and rib diameters, which are not boundary dimensions, so a ring envelope would be a made-up shape. For the cone and cup shapes use the maker's CAD pages linked below (Timken's part pages carry 3D and 2D views).
- Left out: the 33xxx and 331xx wide series (rows are in the Koyo pages, not tabulated here), the odd-bore codes written with a slash (320/28, 302/28, 322/32, 303/32), 30304 (Koyo prints only A-series 30304AC / 30304AJR with B = 16 here), T-series and 'TR' special rows, the cup / cone separate part numbers, load ratings, e and Y factors, and all sizes above 140 mm. Rows 30307, 32209 and 32211 are printed with a '-1' suffix and 32907 with '-2' in the Koyo table; the ISO number is used.
- Mating: see the mating features below (shaft and housing tolerance classes from NTN's fit tables). Tapered roller bearings are normally fitted in pairs with the cup and cone set to the bearing clearance or preload your design needs; the maker's own fitting practice (Timken's online Fitting Practice tool) gives class-by-class values.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| bore d (cone seat) | Ø15 to Ø140 in the table (30205 = Ø25) | solid steel shaft; rotating inner ring under normal load: js5 / k5 / m5 / m6 / n6 / p6 / r6 depending on load and shaft size (NTN Table 7.2 (1); the diameter bands are in that table) | press | all |
| bore d, stationary inner ring | same Ø d | shaft class g6 (inner ring must slide) or h6 (need not slide): NTN Table 7.2 (1), same classes in the republished copy | slide | all |
| OD D (cup seat), stationary outer ring | Ø35 to Ø280 in the table (30205 = Ø52) | cast iron or steel housing bore H7 (G7 for large bearings or big temperature difference), H8 for light or ordinary loads: NTN Table 7.2 (3) | slide | all |
| OD D, rotating outer ring or indeterminate load | same Ø D | housing bore K7 / M7 (indeterminate load), N7 or P7 (rotating outer ring, normal to heavy load): NTN Table 7.2 (3) | press | all |
| shoulder chamfers r, r1 | min values per size in the table (30205: r = r1 = 1 mm) | shaft and housing corner radii must be smaller than r / r1 so the ring sits on its face | designed | all |

## Sizes

| bearing (ISO 355 number) | series | bore d, mm | OD D, mm | overall width T, mm | cone width B, mm | cup width C, mm | r min, mm | r1 min, mm | row as printed in the Koyo table |
|---|---|---|---|---|---|---|---|---|---|
| 30202 | 302xx | 15 | 35 | 11.75 | 11 | 10 | 0.6 | 0.6 | 30202R |
| 30203 | 302xx | 17 | 40 | 13.25 | 12 | 11 | 1 | 1 | 30203JR |
| 30204 | 302xx | 20 | 47 | 15.25 | 14 | 12 | 1 | 1 | 30204JR |
| 30205 | 302xx | 25 | 52 | 16.25 | 15 | 13 | 1 | 1 | 30205JR |
| 30206 | 302xx | 30 | 62 | 17.25 | 16 | 14 | 1 | 1 | 30206JR |
| 30207 | 302xx | 35 | 72 | 18.25 | 17 | 15 | 1.5 | 1.5 | 30207JR |
| 30208 | 302xx | 40 | 80 | 19.75 | 18 | 16 | 1.5 | 1.5 | 30208JR |
| 30209 | 302xx | 45 | 85 | 20.75 | 19 | 16 | 1.5 | 1.5 | 30209JR |
| 30210 | 302xx | 50 | 90 | 21.75 | 20 | 17 | 1.5 | 1.5 | 30210JR |
| 30211 | 302xx | 55 | 100 | 22.75 | 21 | 18 | 2 | 1.5 | 30211JR |
| 30212 | 302xx | 60 | 110 | 23.75 | 22 | 19 | 2 | 1.5 | 30212JR |
| 30213 | 302xx | 65 | 120 | 24.75 | 23 | 20 | 2 | 1.5 | 30213JR |
| 30214 | 302xx | 70 | 125 | 26.25 | 24 | 21 | 2 | 1.5 | 30214JR |
| 30215 | 302xx | 75 | 130 | 27.25 | 25 | 22 | 2 | 1.5 | 30215JR |
| 30216 | 302xx | 80 | 140 | 28.25 | 26 | 22 | 2.5 | 2 | 30216JR |
| 30217 | 302xx | 85 | 150 | 30.5 | 28 | 24 | 2.5 | 2 | 30217JR |
| 30218 | 302xx | 90 | 160 | 32.5 | 30 | 26 | 2.5 | 2 | 30218JR |
| 30219 | 302xx | 95 | 170 | 34.5 | 32 | 27 | 3 | 2.5 | 30219JR |
| 30220 | 302xx | 100 | 180 | 37 | 34 | 29 | 3 | 2.5 | 30220JR |
| 30221 | 302xx | 105 | 190 | 39 | 36 | 30 | 3 | 2.5 | 30221JR |
| 30222 | 302xx | 110 | 200 | 41 | 38 | 32 | 3 | 2.5 | 30222JR |
| 30224 | 302xx | 120 | 215 | 43.5 | 40 | 34 | 3 | 2.5 | 30224JR |
| 30226 | 302xx | 130 | 230 | 43.75 | 40 | 34 | 4 | 3 | 30226JR |
| 30228 | 302xx | 140 | 250 | 45.75 | 42 | 36 | 4 | 3 | 30228JR |
| 30302 | 303xx | 15 | 42 | 14.25 | 13 | 11 | 1 | 1 | 30302JR |
| 30303 | 303xx | 17 | 47 | 15.25 | 14 | 12 | 1 | 1 | 30303JR |
| 30305 | 303xx | 25 | 62 | 18.25 | 17 | 15 | 1.5 | 1.5 | 30305JR |
| 30306 | 303xx | 30 | 72 | 20.75 | 19 | 16 | 1.5 | 1.5 | 30306JR |
| 30307 | 303xx | 35 | 80 | 22.75 | 21 | 18 | 2 | 1.5 | 30307JR-1 |
| 30308 | 303xx | 40 | 90 | 25.25 | 23 | 20 | 2 | 1.5 | 30308JR |
| 30309 | 303xx | 45 | 100 | 27.25 | 25 | 22 | 2 | 1.5 | 30309JR |
| 30310 | 303xx | 50 | 110 | 29.25 | 27 | 23 | 2.5 | 2 | 30310JR |
| 30311 | 303xx | 55 | 120 | 31.5 | 29 | 25 | 2.5 | 2 | 30311JR |
| 30312 | 303xx | 60 | 130 | 33.5 | 31 | 26 | 3 | 2.5 | 30312JR |
| 30313 | 303xx | 65 | 140 | 36 | 33 | 28 | 3 | 2.5 | 30313JR |
| 30314 | 303xx | 70 | 150 | 38 | 35 | 30 | 3 | 2.5 | 30314JR |
| 30315 | 303xx | 75 | 160 | 40 | 37 | 31 | 3 | 2.5 | 30315JR |
| 30316 | 303xx | 80 | 170 | 42.5 | 39 | 33 | 3 | 2.5 | 30316JR |
| 30317 | 303xx | 85 | 180 | 44.5 | 41 | 34 | 4 | 3 | 30317JR |
| 30318 | 303xx | 90 | 190 | 46.5 | 43 | 36 | 4 | 3 | 30318JR |
| 30319 | 303xx | 95 | 200 | 49.5 | 45 | 38 | 4 | 3 | 30319JR |
| 30320 | 303xx | 100 | 215 | 51.5 | 47 | 39 | 4 | 3 | 30320JR |
| 30321 | 303xx | 105 | 225 | 53.5 | 49 | 41 | 4 | 3 | 30321JR |
| 30322 | 303xx | 110 | 240 | 54.5 | 50 | 42 | 4 | 3 | 30322JR |
| 30324 | 303xx | 120 | 260 | 59.5 | 55 | 46 | 4 | 3 | 30324JR |
| 30326 | 303xx | 130 | 280 | 63.75 | 58 | 49 | 5 | 4 | 30326JR |
| 32004 | 320xx | 20 | 42 | 15 | 15 | 12 | 0.6 | 0.6 | 32004JR |
| 32005 | 320xx | 25 | 47 | 15 | 15 | 11.5 | 0.6 | 0.6 | 32005JR |
| 32006 | 320xx | 30 | 55 | 17 | 17 | 13 | 1 | 1 | 32006JR |
| 32007 | 320xx | 35 | 62 | 18 | 18 | 14 | 1 | 1 | 32007JR |
| 32008 | 320xx | 40 | 68 | 19 | 19 | 14.5 | 1 | 1 | 32008JR |
| 32009 | 320xx | 45 | 75 | 20 | 20 | 15.5 | 1 | 1 | 32009JR |
| 32010 | 320xx | 50 | 80 | 20 | 20 | 15.5 | 1 | 1 | 32010JR |
| 32011 | 320xx | 55 | 90 | 23 | 23 | 17.5 | 1.5 | 1.5 | 32011JR |
| 32012 | 320xx | 60 | 95 | 23 | 23 | 17.5 | 1.5 | 1.5 | 32012JR |
| 32013 | 320xx | 65 | 100 | 23 | 23 | 17.5 | 1.5 | 1.5 | 32013JR |
| 32014 | 320xx | 70 | 110 | 25 | 25 | 19 | 1.5 | 1.5 | 32014JR |
| 32015 | 320xx | 75 | 115 | 25 | 25 | 19 | 1.5 | 1.5 | 32015JR |
| 32016 | 320xx | 80 | 125 | 29 | 29 | 22 | 1.5 | 1.5 | 32016JR |
| 32017 | 320xx | 85 | 130 | 29 | 29 | 22 | 1.5 | 1.5 | 32017JR |
| 32018 | 320xx | 90 | 140 | 32 | 32 | 24 | 2 | 1.5 | 32018JR |
| 32019 | 320xx | 95 | 145 | 32 | 32 | 24 | 2 | 1.5 | 32019JR |
| 32020 | 320xx | 100 | 150 | 32 | 32 | 24 | 2 | 1.5 | 32020JR |
| 32021 | 320xx | 105 | 160 | 35 | 35 | 26 | 2.5 | 2 | 32021JR |
| 32022 | 320xx | 110 | 170 | 38 | 38 | 29 | 2.5 | 2 | 32022JR |
| 32024 | 320xx | 120 | 180 | 38 | 38 | 29 | 2.5 | 2 | 32024JR |
| 32026 | 320xx | 130 | 200 | 45 | 45 | 34 | 2.5 | 2 | 32026JR |
| 32028 | 320xx | 140 | 210 | 45 | 45 | 34 | 2.5 | 2 | 32028JR |
| 32203 | 322xx | 17 | 40 | 17.25 | 16 | 14 | 1 | 1 | 32203JR |
| 32204 | 322xx | 20 | 47 | 19.25 | 18 | 15 | 1 | 1 | 32204JR |
| 32205 | 322xx | 25 | 52 | 19.25 | 18 | 16 | 1 | 1 | 32205JR |
| 32206 | 322xx | 30 | 62 | 21.25 | 20 | 17 | 1 | 1 | 32206JR |
| 32207 | 322xx | 35 | 72 | 24.25 | 23 | 19 | 1.5 | 1.5 | 32207JR |
| 32208 | 322xx | 40 | 80 | 24.75 | 23 | 19 | 1.5 | 1.5 | 32208JR |
| 32209 | 322xx | 45 | 85 | 24.75 | 23 | 19 | 1.5 | 1.5 | 32209JR-1 |
| 32210 | 322xx | 50 | 90 | 24.75 | 23 | 19 | 1.5 | 1.5 | 32210JR |
| 32211 | 322xx | 55 | 100 | 26.75 | 25 | 21 | 2 | 1.5 | 32211JR-1 |
| 32212 | 322xx | 60 | 110 | 29.75 | 28 | 24 | 2 | 1.5 | 32212JR |
| 32213 | 322xx | 65 | 120 | 32.75 | 31 | 27 | 2 | 1.5 | 32213JR |
| 32214 | 322xx | 70 | 125 | 33.25 | 31 | 27 | 2 | 1.5 | 32214JR |
| 32215 | 322xx | 75 | 130 | 33.25 | 31 | 27 | 2 | 1.5 | 32215JR |
| 32216 | 322xx | 80 | 140 | 35.25 | 33 | 28 | 2.5 | 2 | 32216JR |
| 32217 | 322xx | 85 | 150 | 38.5 | 36 | 30 | 2.5 | 2 | 32217JR |
| 32218 | 322xx | 90 | 160 | 42.5 | 40 | 34 | 2.5 | 2 | 32218JR |
| 32219 | 322xx | 95 | 170 | 45.5 | 43 | 37 | 3 | 2.5 | 32219JR |
| 32220 | 322xx | 100 | 180 | 49 | 46 | 39 | 3 | 2.5 | 32220JR |
| 32221 | 322xx | 105 | 190 | 53 | 50 | 43 | 3 | 2.5 | 32221JR |
| 32222 | 322xx | 110 | 200 | 56 | 53 | 46 | 3 | 2.5 | 32222JR |
| 32224 | 322xx | 120 | 215 | 61.5 | 58 | 50 | 3 | 2.5 | 32224JR |
| 32226 | 322xx | 130 | 230 | 67.75 | 64 | 54 | 4 | 3 | 32226JR |
| 32303 | 323xx | 17 | 47 | 20.25 | 19 | 16 | 1 | 1 | 32303JR |
| 32304 | 323xx | 20 | 52 | 22.25 | 21 | 18 | 1.5 | 1.5 | 32304JR |
| 32305 | 323xx | 25 | 62 | 25.25 | 24 | 20 | 1.5 | 1.5 | 32305JR |
| 32306 | 323xx | 30 | 72 | 28.75 | 27 | 23 | 1.5 | 1.5 | 32306JR |
| 32307 | 323xx | 35 | 80 | 32.75 | 31 | 25 | 2 | 1.5 | 32307JR |
| 32308 | 323xx | 40 | 90 | 35.25 | 33 | 27 | 2 | 1.5 | 32308JR |
| 32309 | 323xx | 45 | 100 | 38.25 | 36 | 30 | 2 | 1.5 | 32309JR |
| 32310 | 323xx | 50 | 110 | 42.25 | 40 | 33 | 2.5 | 2 | 32310JR |
| 32311 | 323xx | 55 | 120 | 45.5 | 43 | 35 | 2.5 | 2 | 32311JR |
| 32312 | 323xx | 60 | 130 | 48.5 | 46 | 37 | 3 | 2.5 | 32312JR |
| 32313 | 323xx | 65 | 140 | 51 | 48 | 39 | 3 | 2.5 | 32313JR |
| 32314 | 323xx | 70 | 150 | 54 | 51 | 42 | 3 | 2.5 | 32314JR |
| 32315 | 323xx | 75 | 160 | 58 | 55 | 45 | 3 | 2.5 | 32315JR |
| 32316 | 323xx | 80 | 170 | 61.5 | 58 | 48 | 3 | 2.5 | 32316JR |
| 32317 | 323xx | 85 | 180 | 63.5 | 60 | 49 | 4 | 3 | 32317JR |
| 32318 | 323xx | 90 | 190 | 67.5 | 64 | 53 | 4 | 3 | 32318JR |
| 32319 | 323xx | 95 | 200 | 71.5 | 67 | 55 | 4 | 3 | 32319JR |
| 32320 | 323xx | 100 | 215 | 77.5 | 73 | 60 | 4 | 3 | 32320JR |
| 32321 | 323xx | 105 | 225 | 81.5 | 77 | 63 | 4 | 3 | 32321JR |
| 32322 | 323xx | 110 | 240 | 84.5 | 80 | 65 | 4 | 3 | 32322JR |
| 32324 | 323xx | 120 | 260 | 90.5 | 86 | 69 | 4 | 3 | 32324JR |
| 32326 | 323xx | 130 | 280 | 98.75 | 93 | 78 | 5 | 4 | 32326 |
| 32907 | 329xx | 35 | 55 | 14 | 14 | 11.5 | 0.6 | 0.6 | 32907JR-2 |
| 32908 | 329xx | 40 | 62 | 15 | 15 | 12 | 0.6 | 0.6 | 32908JR |
| 32909 | 329xx | 45 | 68 | 15 | 15 | 12 | 0.6 | 0.6 | 32909JR |
| 32910 | 329xx | 50 | 72 | 15 | 15 | 12 | 0.6 | 0.6 | 32910JR |
| 32911 | 329xx | 55 | 80 | 17 | 17 | 14 | 1 | 1 | 32911JR |
| 32912 | 329xx | 60 | 85 | 17 | 17 | 14 | 1 | 1 | 32912JR |
| 32913 | 329xx | 65 | 90 | 17 | 17 | 14 | 1 | 1 | 32913JR |
| 32914 | 329xx | 70 | 100 | 20 | 20 | 16 | 1 | 1 | 32914JR |
| 32915 | 329xx | 75 | 105 | 20 | 20 | 16 | 1 | 1 | 32915JR |
| 32916 | 329xx | 80 | 110 | 20 | 20 | 16 | 1 | 1 | 32916JR |
| 32917 | 329xx | 85 | 120 | 23 | 23 | 18 | 1.5 | 1.5 | 32917JR |
| 32918 | 329xx | 90 | 125 | 23 | 23 | 18 | 1.5 | 1.5 | 32918JR |
| 32919 | 329xx | 95 | 130 | 23 | 23 | 18 | 1.5 | 1.5 | 32919JR |
| 32920 | 329xx | 100 | 140 | 25 | 25 | 20 | 1.5 | 1.5 | 32920JR |
| 32921 | 329xx | 105 | 145 | 25 | 25 | 20 | 1.5 | 1.5 | 32921JR |
| 32922 | 329xx | 110 | 150 | 25 | 25 | 20 | 1.5 | 1.5 | 32922JR |
| 32924 | 329xx | 120 | 165 | 29 | 29 | 23 | 1.5 | 1.5 | 32924JR |
| 32926 | 329xx | 130 | 180 | 32 | 32 | 25 | 2 | 1.5 | 32926JR |
| 32928 | 329xx | 140 | 190 | 32 | 32 | 25 | 2 | 1.5 | 32928JR |

## Where the files are

- JTEKT (Koyo), via AIMS Industrial: [Tapered roller bearings, metric: catalogue pages 366 to 389 selected: d, D, T, B, C, r, r1 for 25 to 140 mm (30xxx, 32xxx, 33xxx)](https://aimsindustrial.com.au/cdn/shop/files/Koyo-Tapered-Roller-Bearings-Metric-Catalogue-Cover-and-Pages-366-to-389-Selected.pdf) — web — Publisher's page; dimensions are facts
- JTEKT (Koyo), via AIMS Industrial: [Tapered roller bearings, metric: catalogue pages 364 to 389 selected (26 pages): the 15 to 25 mm bore rows](https://aimsindustrial.com.au/cdn/shop/files/Koyo-Tapered-Roller-Bearings-Metric-Catalogue-Cover-and-Pages-364-to-389-Selected-26-Pages.pdf) — web — Publisher's page; dimensions are facts
- Timken (data sheet via bearings-online.co.uk): [Part 30205, tapered roller bearings TS metric: d 25, D 52, B 15, C 13, T 16.25, backing diameters](https://www.bearings-online.co.uk/uploads/tinymce/30205-TaperedRollerBearings-TS(TaperedSingle)Metric.pdf) — web — Publisher's page; dimensions are facts
- NSK: [HR32205C: d 25, D 52, T 19.25, B 18, C 15 (high-capacity series; the cup width differs from the standard 32205)](https://www.nsk.com/engineering/hr32205c-trbsr-md.html) — web — Publisher's page; dimensions are facts
- AIMS Industrial (Koyo/JTEKT product page): [30203JR: 17 x 40 x 13.25 mm (page title cross-check)](https://aimsindustrial.com.au/products/tapered-roller-bearing-metric-30200-series) — web — Publisher's page; dimensions are facts
- AIMS Industrial (Koyo/JTEKT product page): [32204JR: 20 x 47 x 19.25 mm (page title cross-check)](https://aimsindustrial.com.au/products/tapered-roller-bearing-metric-32200-series) — web — Publisher's page; dimensions are facts
- AIMS Industrial (Koyo/JTEKT product page): [32004JR: 20 x 42 x 15 mm (page title cross-check)](https://aimsindustrial.com.au/products/tapered-roller-bearing-metric-32000-series) — web — Publisher's page; dimensions are facts
- AIMS Industrial (Koyo/JTEKT product page): [32303JR: 17 x 47 x 20.25 mm (page title cross-check)](https://aimsindustrial.com.au/products/tapered-roller-bearing-metric-32300-series) — web — Publisher's page; dimensions are facts
- Timken (part pages with CAD views): [Timken part page with dimensions and 3D / 2D CAD views for each cone, cup and set (shown here: LM67048 / LM67010)](https://cad.timken.com/item/tapered-roller-bearings-ts-tapered-single-/tapered-roller-bearings-ts-tapered-single-imperi-2/lm67048-lm67010) — web — Publisher's page; dimensions are facts
- NTN: [Rolling bearing catalogue, chapter 7 Bearing fits: Table 7.2 (1) shaft tolerance classes and Table 7.2 (3) housing bore tolerance classes for radial bearings (classes 0, 6X, 6)](https://www.ntnglobal.com/en/products/catalog/pdf/2203E_a07.pdf) — web — Publisher's page; dimensions are facts

## Questions

**What are the dimensions of a 30205 tapered roller bearing?**

Bore 25, OD 52, overall width T 16.25 mm; cone width B 15, cup width C 13 (Koyo 30205JR and Timken 30205 agree).

**What are the dimensions of a 30206 tapered roller bearing?**

Bore 30, OD 62, T 17.25; cone width B 16, cup width C 14 (Koyo 30206JR).

**What is the difference between a 30205 and a 32205?**

Same 25 mm bore and 52 mm OD, but the 32205 is wider: T 19.25, B 18, C 16 (Koyo 32205JR) against T 16.25, B 15, C 13 for the 30205.

**What is the difference between a 30205 and a 30305?**

The 303xx series has a larger OD for the same bore: 30305 is 25 x 62 x 18.25 (B 17, C 15) against 25 x 52 x 16.25 for the 30205.

**What do T, B and C mean on a tapered roller bearing?**

T is the overall assembled width, B the cone (inner ring) width and C the cup (outer ring) width. C varies slightly between makers and series; d, D, T and B do not.

## Fits with

- [Ball bearings, 683 to 6210 and flanged F6xx (ISO 15)](https://xemstudio.com/objects/ball-bearings-metric/)
- [Deep-groove ball bearings, series 60, 62, 63, 68 and 69: 6000 to 6310 (ISO 15)](https://xemstudio.com/objects/deep-groove-ball-bearings-series/)
- [Tapered roller bearing sets, inch: LM11949 / LM11910, LM12749 / LM12710, L44649 / L44610, LM67048 / LM67010 (Timken): bore, OD, T, B, C and shoulder diameters](https://xemstudio.com/objects/tapered-roller-bearings-inch-lm11949-l44649-lm67048/)
- [Angular contact ball bearings 7200 B and 7300 B (7205B, 7206B, 7305B and more): bore, OD, width, r, r1 + 23 ring-envelope STEP/STL files](https://xemstudio.com/objects/angular-contact-ball-bearings-72xx-73xx-b/)
- [Cylindrical roller bearings NU2xx and NU3xx (NU205, NU206, NU208, NU305, NU310 and more): bore, OD, width, r, Fw + 18 ring-envelope STEP/STL files](https://xemstudio.com/objects/cylindrical-roller-bearings-nu2xx-nu3xx/)
- [Spherical roller bearings 222xx and 223xx (22205, 22206, 22208, 22210, 22308 and more): bore, OD, width, r + 13 ring-envelope STEP/STL files](https://xemstudio.com/objects/spherical-roller-bearings-222xx-223xx/)
- [Thrust ball bearings 51100 series (51100 to 51130): bore, outside diameter, height, housing washer bore + STEP/STL envelopes](https://xemstudio.com/objects/thrust-ball-bearings-51100-series/)
- [Radial shaft seals / oil seals, DIN 3760 and ISO 6194-1 sizes: shaft d × bore D × width b (6 × 16 × 7 to 480 × 530 × 25) + case envelopes](https://xemstudio.com/objects/radial-shaft-seals-din-3760-iso-6194/)
- [Pillow block units UCP204–UCP210, UCF204–UCF210, UCFL204–UCFL209: bore, centre height, bolt spacing, slots](https://xemstudio.com/objects/pillow-block-units-ucp-ucf-ucfl/)