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Precision ground balls from many compounds including Nitrile. High-speed grinding process assures exact tolerances.

Precision ground rubber balls produced by Rubbermill. RubberMill produces precision ground rubber balls to exacting tolerances and stringent rubber compound specifications. After the balls are molded, they are finished by a high-speed, accurate grinding process. The finishing process eliminates the mold parting line and results in a smooth and uniform surface. Additionally, the machining process used on our precision ground balls provides the consistent, close diametrical and spherical dimensions that are required to produce an effective seal. RubberMill stocks many sizes of Nitrile Ground Balls in prepackaged quantities. Please call for a quote on custom size balls and compounds.

Sizes (Diameter)			Tolerances
Inch	Decimal Inch	Millimeters	Diametrical (In.)	Spherical (In.)
3/32	.093	2.36	.003	.003
1/8	.125	3.18	.003	.003
9/64	.140	3.56	.003	.003
5/32	.156	3.96	.003	.003
3/16	.187	4.75	.003	.003
7/32	.218	5.54	.003	.003
1/4	.250	6.35	.003	.003
5/16	.312	7.94	.003	.003
3/8	.375	9.53	.003	.003
7/16	.437	11.11	.004	.005
1/2	.500	12.70	.004	.005
9/16	.562	14.79	.004	.005
Sizes (Diameter)			Tolerances
Inch	Decimal Inch	Millimeters	Diametrical (In.)	Spherical (In.)
5/8	.625	15.88	.004	.005
3/4	.750	19.05	.004	.005
1	1.000	25.40	.004	.005
1 1/8	1.125	28.58	.006	.008
1 1/4	1.250	31.75	.008	.008
1 3/8	1.375	34.93	.008	.008
1 1/2	1.500	38.10	.008	.008
1 5/8	1.625	41.28	.010	.010
2	2.000	50.80	.010	.010

Visit our Design Illustration #46 Ball to specify your ball needs.

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