High precision and low noise Chrome steel balls are available ranging from 1mm to 50mm in diameter for wide applications in automotive, household electric appliances, aviation & space crafts, navigation and precision machinery fields.

​Stainless steel balls, Carbon steel balls, ceramic balls, tungsten carbide balls are also supplied to meet many application challenges more efficiently.
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Specifications

Diameter		Weight per 1000 PCs (kg)	Numbers of balls per KG		Diameter		Weight per 1000 PCs (kg)	Numbers of balls per KG
Inch	mm				Inch	mm
-	0.5	0.00051	1960780		19/32	15.0812	14	71.4
-	0.68	0.00128	781250		5/8	15.875	16.3	61.3
-	0.8	0.00209	478470		-	16	16.69	59.9
-	1	0.00408	245100		21/32	16.6688	18.9	52.9
-	1.2	0.00705	141840		-	17	20.02	50
-	1.3	0.00893	111980		11/16	17.4625	21.7	46.1
-	1.45	0.0124	80645		23/32	18.2562	24.8	40.3
1/16	1.5875	0.016	62350		-	19	27.96	35.77
-	1.75	0.0218	45871		3/4	19.05	28.2	35.5
-	2	0.0326	30700		25/32	19.8438	31.9	31.4
3/32	2.3812	0.055	18182		13/16	20.6375	35.8	27.9
-	2.5	0.0637	15698		-	21	37.75	26.49
-	3	0.11	9091		27/32	21.4313	40.1	24.9
1/8	3.175	0.131	7634		7/8	22.225	44.8	22.3
-	3.5	0.175	5717		-	23	49.59	20.17
5/32	3.9688	0.255	3922		29/32	23.0188	49.8	20.1
-	4	0.261	3831		15/16	23.8125	55.1	18.2
3/16	4.7625	0.441	2268		-	24	56.34	17.75
-	5	0.51	1961		31/32	24.6063	60.8	16.5
13/64	5.1594	0.56	1786		-	25	63.68	15.7
7/32	5.5562	0.699	1431		1	25.4	66.8	15
15/64	5.9531	0.86	1163		1-1/32	26.1938	73.3	13.64
-	6	0.881	1136		1-1/16	26.9875	80.2	12.47
1/4	6.35	1.04	962		1-3/32	27.7812	87.4	11.4
-	6.5	1.119	894		-	28	89.47	11.18
17/64	6.7469	1.25	800		1-1/8	28.575	95.2	10.5
9/32	7.1438	1.49	671		1-3/16	30.1625	112	8.93
5/16	7.9375	2.04	490		1-1/4	31.75	131	7.63
-	8	2.09	478		-	32	133.6	7.49
-	8.5	2.5	400		1-5/16	33.3375	151.1	6.62
11/32	8.7312	2.71	369		-	34	160.2	6.24
-	9	2.97	337		1-3/8	34.925	174	5.75
3/8	9.525	3.52	284		-	35	174.75	5.72
-	10	4.08	245		1-13/32	35.7188	184	5.43
13/32	10.3188	4.48	223		1-7/16	36.5125	198	5.05
-	11	5.42	185		1-15/32	37.3062	216.9	4.61
7/16	11.1125	5.6	179		1-1/2	38.1	225.6	4.43
-	11.5	6.22	161		1-9/16	39.6875	255	3.92
29/64	11.5094	6.22	161		-	40	260.8	3.83
15/32	11.9062	6.88	145		1-5/8	41.275	287	3.48
-	12	7.04	142		-	42	302	3.31
31/64	12.3031	7.6	132		1-11/16	42.8625	321.2	3.11
1/2	12.7	8.35	120		1-3/4	44.45	358.3	2.79
17/32	13.4938	10	100		-	45	371.4	269
-	14	11.18	89		1-7/8	47.625	440.5	2.27
9/16	14.2875	11.9	84		-	48	450.7	2.22
					2	50.8	534.8	1.87

Sizes, grades, tolerences definitions from ABMA

Grade	Sphericity		Dia. Tolerance per Container / Lot		Diameter Tolerance		Max. Surface Finish
					per Shipment
	Inches	MM	Inches	MM	Inches	MM	Arithmetic Average
10	0.00001	0.0002	0.00002	0.0005	0.0001	0.00254	1
15	0.00001	0.0004	0.00003	0.0007	0.0001	0.00254	1
25	0.000025	0.0006	0.00005	0.0013	0.0001	0.00254	2
50	0.00005	0.0013	0.0001	0.0025	0.0002	0.005	3
100	0.0001	0.0025	0.0002	0.005	0.0005	0.0127	5
200	0.0002	0.0051	0.0004	0.0102	0.001	0.0254	8
300	0.0003	0.0076	0.0006	0.0152	0.0015	0.0381	n/a
500	0.0005	0.0127	0.001	0.025	0.002	0.05	n/a
1000	0.001	0.0254	0.002	0.051	0.005	0.127	n/a
2000	n/a	n/a	0.005	0.127	0.005	0.127	n/a
Burnishing	n/a	n/a	n/a	n/a	0.005	0.127	n/a