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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? · 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

Also called: 30204 bearing dimensions, 30205 bearing dimensions, 30206 bearing dimensions, 30207 bearing dimensions, 30208 bearing dimensions, 30209 bearing dimensions, 30210 bearing dimensions, 30305 bearing dimensions, 30306 bearing dimensions, 32205 bearing dimensions, 32206 bearing dimensions, 32207 bearing dimensions, 32208 bearing dimensions, taper roller bearing 25x52x16.25, taper roller bearing 30x62x1

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. Mating features

sizes: 131 in table

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.

Tapered roller bearings, metric (30203 to 32328, ISO 355): bore, OD… size chart

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

Mating features

Drawn at the exact size. Open press, slide, run and socket features by your process's clearance (tolerances by process); leave designed gaps and clamp fits 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

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

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
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
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
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
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
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
AIMS Industrial (Koyo/JTEKT product page)	32004JR: 20 x 42 x 15 mm (page title cross-check)	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)	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)	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)	web	Publisher's page; dimensions are facts

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Plain text: sheet.txt · JSON: /api/geometry?object=tapered-roller-bearings-metric-iso-355

Schematic, not to scale.

Fits with

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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.