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) — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/tapered-roller-bearings-metric-iso-355/ (sheet CC BY 4.0) 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 Catalog version: 2026-10-20 Sizes: see table below - 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. 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 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - 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) — web — Publisher's page; dimensions are facts — https://aimsindustrial.com.au/cdn/shop/files/Koyo-Tapered-Roller-Bearings-Metric-Catalogue-Cover-and-Pages-366-to-389-Selected.pdf - JTEKT (Koyo), via AIMS Industrial: Tapered roller bearings, metric: catalogue pages 364 to 389 selected (26 pages): the 15 to 25 mm bore rows — web — Publisher's page; dimensions are facts — https://aimsindustrial.com.au/cdn/shop/files/Koyo-Tapered-Roller-Bearings-Metric-Catalogue-Cover-and-Pages-364-to-389-Selected-26-Pages.pdf - 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 — web — Publisher's page; dimensions are facts — https://www.bearings-online.co.uk/uploads/tinymce/30205-TaperedRollerBearings-TS(TaperedSingle)Metric.pdf - NSK: HR32205C: d 25, D 52, T 19.25, B 18, C 15 (high-capacity series; the cup width differs from the standard 32205) — web — Publisher's page; dimensions are facts — https://www.nsk.com/engineering/hr32205c-trbsr-md.html - AIMS Industrial (Koyo/JTEKT product page): 30203JR: 17 x 40 x 13.25 mm (page title cross-check) — web — Publisher's page; dimensions are facts — https://aimsindustrial.com.au/products/tapered-roller-bearing-metric-30200-series - AIMS Industrial (Koyo/JTEKT product page): 32204JR: 20 x 47 x 19.25 mm (page title cross-check) — web — Publisher's page; dimensions are facts — https://aimsindustrial.com.au/products/tapered-roller-bearing-metric-32200-series - AIMS Industrial (Koyo/JTEKT product page): 32004JR: 20 x 42 x 15 mm (page title cross-check) — web — Publisher's page; dimensions are facts — https://aimsindustrial.com.au/products/tapered-roller-bearing-metric-32000-series - AIMS Industrial (Koyo/JTEKT product page): 32303JR: 17 x 47 x 20.25 mm (page title cross-check) — web — Publisher's page; dimensions are facts — https://aimsindustrial.com.au/products/tapered-roller-bearing-metric-32300-series - 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) — web — Publisher's page; dimensions are facts — https://cad.timken.com/item/tapered-roller-bearings-ts-tapered-single-/tapered-roller-bearings-ts-tapered-single-imperi-2/lm67048-lm67010 - 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) — web — Publisher's page; dimensions are facts — https://www.ntnglobal.com/en/products/catalog/pdf/2203E_a07.pdf No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned. API: https://xemstudio.com/api/geometry?object=tapered-roller-bearings-metric-iso-355