Precision Ball Bearings

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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.

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.

Bearing Number	Bore Dia	Outer DIa	Width	Size
3.346 Inch \| 85 Millimeter x 5.118 Inch \| 130 Millimeter x 0.866 Inch \| 22 Millimeter TIMKEN 3MMC9117WI SUM Precision Ball Bearings	48.3 mm	1.22 kg	30 mm	70 mm
4.331 Inch \| 110 Millimeter x 6.693 Inch \| 170 Millimeter x 2.205 Inch \| 56 Millimeter TIMKEN 3MMC9122WI DUH Precision Ball Bearings	115 mm	34 mm	29.7 mm	10 mm
3.346 Inch \| 85 Millimeter x 5.118 Inch \| 130 Millimeter x 0.866 Inch \| 22 Millimeter TIMKEN 3MMC9117WI SUL Precision Ball Bearings	205 Series	Nylon	Setscrew	0.8750 in
3.346 Inch \| 85 Millimeter x 5.118 Inch \| 130 Millimeter x 0.866 Inch \| 22 Millimeter TIMKEN 3MMC9117WI SUH Precision Ball Bearings	Grease Seal (Taper)	37.2 LB	Concentric Clamp Col	782475018505
3.346 Inch \| 85 Millimeter x 5.118 Inch \| 130 Millimeter x 3.465 Inch \| 88 Millimeter TIMKEN 3MMC9117WI QUM Precision Ball Bearings	12 mm	72.5 mm	2	90 mm
3.346 Inch \| 85 Millimeter x 5.118 Inch \| 130 Millimeter x 3.465 Inch \| 88 Millimeter TIMKEN 3MMC9117WI QUL Precision Ball Bearings	76.2 mm	4 mm	25 mm	8.7 mm
3.346 Inch \| 85 Millimeter x 5.118 Inch \| 130 Millimeter x 3.465 Inch \| 88 Millimeter TIMKEN 3MMC9117WI QUH Precision Ball Bearings	13 mm	3.9 kg	22.2 mm	27.8 mm
3.346 Inch \| 85 Millimeter x 5.118 Inch \| 130 Millimeter x 1.732 Inch \| 44 Millimeter TIMKEN 3MMC9117WI DUM Precision Ball Bearings	13.8	15.3 kN	1.1 mm	25.7 kN
3.346 Inch \| 85 Millimeter x 5.118 Inch \| 130 Millimeter x 1.732 Inch \| 44 Millimeter TIMKEN 3MMC9117WI DUH Precision Ball Bearings	48 mm	7.84 kg	140 mm	151 mm
2.953 Inch \| 75 Millimeter x 4.528 Inch \| 115 Millimeter x 2.362 Inch \| 60 Millimeter TIMKEN 3MMC9115WI TUM Precision Ball Bearings	36.4 mm	37 mm	70 mm	48.3 mm
4.331 Inch \| 110 Millimeter x 6.693 Inch \| 170 Millimeter x 4.409 Inch \| 112 Millimeter TIMKEN 2MMC9122WI QUH Precision Ball Bearings	PE206N-	42.9 mm	31.75 mm	UC206-20G2L3
4.331 Inch \| 110 Millimeter x 6.693 Inch \| 170 Millimeter x 2.205 Inch \| 56 Millimeter TIMKEN 2MMC9122WI DUM Precision Ball Bearings	243 mm	6.93 Hz	10.84 Hz	8.16 Hz