Grade and tolerances

ISO 3290-2002

Grade	Variation of ball diameter µm VDWS	Deviation from spherical form µm	Surface roughness µm	Lot diameter variation µm VDWL	Gage interval µm	Allowable ball gage deviation µm	Sub-gage interval µm	Allowable ball sub-gage deviation µm
3	0.08	0.08	0.010	0.13	0.5	+/-5	0.1	+/-0.2
5	0.13	0.13	0.014	0.25	1	+/-5	0.2	+/-0.4
10	0.25	0.25	0.020	0.5	1	+/-9	0.2	+/-0.4
16	0.40	0.40	0.025	0.8	2	+/-10	0.4	+/-0.8
20	0.50	0.50	0.032	1	2	+/-10	0.4	+/-0.8
24	0.60	0.60	0.040	1.2	2	+/-12	0.4	+/-0.8
28	0.70	0.70	0.050	1.4	2	+/-12	0.4	+/-0.4
40	1.00	1.00	0.060	2	4	+/-16	0.8	+/-1.6
60	1.50	1.50	0.080	3	6	+/-18	1.2	+/-2.4
100	2.50	2.50	0.100	5	10	+/-40	2.0	+/-4.0
200	5.00	5.00	0.150	10	15	+/-60	3.0	+/-6.0

ANSI/AFBMA-10.1989

Grade	Allowable ball diameter variation µm VDWS	Allowable deviation from spherical form µm ΔRV	Maximum surface roughness arithmetic average µm Ra	Allowable lot diameter variation µm VDWL	Nominal ball deviation tolerance µm	Allowable ball gage marking µm ΔRS	Container marking increment µm
48	1.2	1.2	0.08	2.4	-	-	-
3	0.08	0.08	0.012	0.13	-	±0.75	0.25
5	0.13	0.13	0.02	0.25	-	+1.25/-1	0.25
10	0.25	0.25	0.025	0.5	-	+1.25/-1	0.25
16	0.4	0.4	0.025	0.8	-	+1.25/-1	0.25
24	0.6	0.6	0.05	1.2	-	±2.5	1.25
100	2.5	2.5	0.125	5	±12.5	-	-
200	5	5	0.2	10	±25	-	-
500	13	13	-	25	±50	-	-
1000	25	25	-	50	±125	-	-

DIN 5401-11.1993 (part one)

Grade	Dw			Tolerances on one ball			Lots tolerances
	Nominal size in mm over up to		Limit deviations µm	Ball dia. variation (µm) VDWS	Deviation from spher. form (µm) tDW	Surface roughness (µm) Ra	Lots dia. variation (µm) VDWL	Gages deviation µm	Gages interals µm	Ball gage tolerances
3	-	12	±5.32	0.08	0.08	0.010	0.13	-5/+5	0.5	0.5
5	-	12	±5.63	0.13	0.13	0.014	0.25	-5/+5	1	1
10	-	25	±9.75	0.25	0.25	0.020	0.5	-9/+9	1	1
16	-	25	±11.4	0.4	0.4	0.025	0.8	-10/+10	2	2
20	-	38	±11.5	0.5	0.5	0.032	1	-10/+10	2	2
28	-	50	±13.7	0.7	0.7	0.050	1.4	-12/+12	2	2
40	-	100	±19	1	1	0.060	2	-16/+16	4	4
100	-	150	±47.5	2.5	2.5	0.125	5	-40/+40	10	10
200	-	150	72.5	5	5	0.200	10	-60/+60	15	15
500	-	25	±75	25	25	-	50*	-50/+50	50	50
500	25	50	±112.5	25	25	-	75*	-75/+75	75	75
500	50	75	±150	25	25	-	100*	-100/+100	100	100
500	75	100	±187.5	32	32	-	125*	-125/+125	125	125
500	100	125	±225	38	38	-	150*	-150/+150	150	150
500	125	150	±262.5	44	44	-	175*	-175/+175	175	175
600	All	All	±200	-	-	-	400*	-	-	-
700	All	All	±1000	-	-	-	2000*	-	-	-

DIN 5401-01.1978

1	2	3	4	5											6	7
Class	Diameter (nominal) mm	Allowance on diameter µm	Tolerance in each grade µm	Mean allowances in each grade (µm)											Permissible geometrical deviation µm	Example of applications
I	Up to 10	±10.25	0.5	-10	...	-1.5	-1	-0.5	0	+0.5	1	+1.5	...	+10	0.25	Ball bearings precision turntables high pressure closures
II	Up to 25	±10.50	1	-10	...	-3	-2	-1	0	+1	+2	+3	...	+10	0.5
III	Up to 25		2	-10	-8	-6	-4	-2	0	+2	+4	+6	+8	+10	1
	25 to 50		3		-12	-9	-6	-3	0	+3	+6	+9	+12		1.5
	50 to 75		4			-12	-8	-4	0	+4	+8	+12			2
	75 to 100		5			-15	-10	-5	0	+5	+10	+15			2.5
	100 to 125		6			-18	-12	-6	0	+6	+12	+18			3
	125 to 150		7			-21	-14	-7	0	+7	+14	+21			3.5
IV	Up to 10	±14	4			-12	-8	-4	0	+4	+8	+12			2	Hub bearings
V	Up to 25	±75	50					-50	0	+50					25	Turables for road vehicles furniture castors, lubricators, sping loaded catches
	25 to 50	±113	75					-75	0	+75					38
	50 to 75	±150	100					-100	0	+100					50
	75 to 100	±188	125					-125	0	+125					63
	100 to 125	±255	150					-150	0	+150					75
	125 to 150	±263	175					-175	0	+175					88
VI		±200	400													Ball mills, mill charges

青岛百克滚珠传动部件有限公司
Qingdao BRBC Balls & Transmission Parts Co., Ltd.

921 Tuanjie Road
Economic and Technological Development Zone
Qingdao, Shandong Province

Tel: (+86-532) 8610 7680
Fax: (+86-532) 8610 7682

Email: contact@brbc.cn

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Although all technical data have been verified with care, BRBC holds no responsibility for any error.

Balls and Rollers Durbal Kordel

Grade and tolerances

ISO 3290-2002

ANSI/AFBMA-10.1989

DIN 5401-11.1993 (part one)

DIN 5401-01.1978

Balls and Rollers

Durbal

Kordel