Deep-Groove Ball Bearing Dimensions

Bore, outside diameter and width of the standard 60, 62 and 63 series deep-groove ball bearings.

The single-row deep-groove ball bearing is the most common bearing in the world, and its outside dimensions are standardized (ISO 15) so one maker’s bearing fits another’s housing. The designation tells you the size: 6205 is a 62-series bearing with bore code 05, a 25 mm bore.

This table lists the boundary dimensions of the three most-used series. Load ratings and speed limits depend on the maker, so take those from the catalog.

The table

35 rows

Designation	Bore d (mm)	Outside diameter D (mm)	Width B (mm)	Mean diameter (mm)
6000	10	26	8	18
6001	12	28	8	20
6002	15	32	9	23.5
6003	17	35	10	26
6004	20	42	12	31
6005	25	47	12	36
6006	30	55	13	42.5
6007	35	62	14	48.5
6008	40	68	15	54
6009	45	75	16	60
6010	50	80	16	65
6200	10	30	9	20
6201	12	32	10	22
6202	15	35	11	25
6203	17	40	12	28.5
6204	20	47	14	33.5
6205	25	52	15	38.5
6206	30	62	16	46
6207	35	72	17	53.5
6208	40	80	18	60
6209	45	85	19	65
6210	50	90	20	70
6211	55	100	21	77.5
6212	60	110	22	85
6300	10	35	11	22.5
6301	12	37	12	24.5
6302	15	42	13	28.5
6303	17	47	14	32
6304	20	52	15	36
6305	25	62	17	43.5
6306	30	72	19	51
6307	35	80	21	57.5
6308	40	90	23	65
6309	45	100	25	72.5
6310	50	110	27	80

Source and notes: ISO 15 boundary dimensions of single-row deep-groove ball bearings, 60, 62 and 63 series (bore codes 00 to 12 map to 10, 12, 15, 17 mm and then 5 x the code). Load ratings depend on the maker: see the catalog.

How to use this table

Find the designation (or filter by bore or outside diameter).
Check the bore against the shaft and the outside diameter against the housing bore.
Check the width against the space available.
Choose the series for the load: 60 is extra light, 62 light and 63 medium.

Worked example: 6205 against 6305

6205: bore 25 mm, outside diameter 52 mm, width 15 mm.
6305 (same bore, heavier series): outside diameter 62 mm, width 17 mm.
Both fit a 25 mm shaft; the 6305 needs a 10 mm larger housing bore and is 2 mm wider, in return for a higher load rating.

Notes and cautions

For bores of 20 mm and above the last two digits of the designation are the bore divided by 5: 06 is 30 mm, 10 is 50 mm. The codes 00 to 03 are special (10, 12, 15 and 17 mm).
Suffixes such as 2RS (rubber seals), ZZ (metal shields) and C3 (extra internal clearance) change the bearing but not these boundary dimensions.

FAQ

What does 6205 mean?

The 6 is the bearing type (single-row deep-groove ball), the 2 is the dimension series (light), and 05 is the bore code, meaning 5 × 5 = 25 mm.

Which series do I need?

Start from the shaft and housing sizes you have, then choose the series that gives the load rating and life you need. Heavier series carry more load in the same bore but need more space.

Sources

ISO 15, Rolling bearings: radial bearings, boundary dimensions, general plan.
ISO 15 boundary dimensions of single-row deep-groove ball bearings, 60, 62 and 63 series (bore codes 00 to 12 map to 10, 12, 15, 17 mm and then 5 x the code). Load ratings depend on the maker: see the catalog.