Precision Ball Bearings

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Precision ball bearings are used for high precision applications in a variety of markets, including aerospace, health, machine tool, robotics and general industry.Ball bearings with shields or seals for protection can be lubricated to last for the operating life. Sometimes ball bearings are also called “deep groove ball bearings.

Precision balls are used in critical aeronautical bearings, guidance system balls for space and military applications, precision valves, automotive bearings and other applications where higher precision is necessary. Precision balls are defined by grade: The lower the number of the grade, the more precision to which the ball is manufactured.

Bearing Number	Bore Dia	Outer DIa	Width	Size
5.512 Inch \| 140 Millimeter x 8.268 Inch \| 210 Millimeter x 1.299 Inch \| 33 Millimeter TIMKEN MM9128K Precision Ball Bearings	1400 r/min	2800 r/min	153 kN	66 mm
5.118 Inch \| 130 Millimeter x 7.874 Inch \| 200 Millimeter x 1.299 Inch \| 33 Millimeter TIMKEN MM9126K Precision Ball Bearings	1.00 mm	338000 N	465000 N	84.00 mm
4.724 Inch \| 120 Millimeter x 7.087 Inch \| 180 Millimeter x 1.102 Inch \| 28 Millimeter TIMKEN MM9124K Precision Ball Bearings	180 mm	146 mm	1500 r/min	46.5 kg
1.575 Inch \| 40 Millimeter x 2.677 Inch \| 68 Millimeter x 0.591 Inch \| 15 Millimeter TIMKEN MM9108K Precision Ball Bearings	105 mm	295 mm	88 mm	330
4.331 Inch \| 110 Millimeter x 6.693 Inch \| 170 Millimeter x 1.102 Inch \| 28 Millimeter TIMKEN MM9122K Precision Ball Bearings	127000 N	2600 rpm	3200 rpm	130.000 mm
1.625 Inch \| 41.275 Millimeter x 3.438 Inch \| 87.325 Millimeter x 1.625 Inch \| 41.275 Millimeter TIMKEN MM90EX 150 DU C1 Precision Ball Bearings	1.625 Inch \| 41.275 Millimeter x 3.438 Inch \| 87.325 Millimeter x 1.625 Inch \| 41.275 Millimeter	-	-	-
2.559 Inch \| 65 Millimeter x 3.937 Inch \| 100 Millimeter x 0.709 Inch \| 18 Millimeter TIMKEN MM9113K Precision Ball Bearings	449 mm	444 mm	2.4 mm	4 mm
1.625 Inch \| 41.275 Millimeter x 3.438 Inch \| 87.325 Millimeter x 1.625 Inch \| 41.275 Millimeter TIMKEN MM90EX 250 DU C1 Precision Ball Bearings	2.3	6 mm	112 mm	1.6
1.625 Inch \| 41.275 Millimeter x 3.438 Inch \| 87.325 Millimeter x 1.625 Inch \| 41.275 Millimeter TIMKEN MM90EX 100 DU C1 Precision Ball Bearings	4 41/64 in	1 27/32 in	30 mm, 35 mm	12 1/2 in
1.625 Inch \| 41.275 Millimeter x 3.438 Inch \| 87.325 Millimeter x 1.625 Inch \| 41.275 Millimeter TIMKEN MM90EX 20 DU C1 Precision Ball Bearings	5000 rpm	1.00 mm	31.00 mm	2.00 mm
2.953 Inch \| 75 Millimeter x 4.331 Inch \| 110 Millimeter x 2.362 Inch \| 60 Millimeter TIMKEN MM75BS110 QUH Precision Ball Bearings	146 kN	62.7 kN	6700 r/min	62 mm
2.953 Inch \| 75 Millimeter x 4.331 Inch \| 110 Millimeter x 1.181 Inch \| 30 Millimeter TIMKEN MM75BS110 DUH Precision Ball Bearings	203FFS	0.64 mm	88503	9560 N