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
4.134 Inch \| 105 Millimeter x 6.299 Inch \| 160 Millimeter x 2.047 Inch \| 52 Millimeter TIMKEN 2MMC9121WI DUM Precision Ball Bearings	120 °C	0.43 Hz	140 mm	42 mm
4.134 Inch \| 105 Millimeter x 6.299 Inch \| 160 Millimeter x 2.047 Inch \| 52 Millimeter TIMKEN 2MMC9121WI DUH Precision Ball Bearings	27 mm	7 mm	CN	R37
4.134 Inch \| 105 Millimeter x 6.299 Inch \| 160 Millimeter x 2.047 Inch \| 52 Millimeter TIMKEN 2MMC9121WI DUL Precision Ball Bearings	34.1 mm	85.7 mm	5 mm	2
3.937 Inch \| 100 Millimeter x 5.906 Inch \| 150 Millimeter x 2.835 Inch \| 72 Millimeter TIMKEN 2MMC9120WI TUM Precision Ball Bearings	3.937 Inch \| 100 Mil	Ball	1.1 mm	Metric
3.937 Inch \| 100 Millimeter x 5.906 Inch \| 150 Millimeter x 2.835 Inch \| 72 Millimeter TIMKEN 2MMC9120WI TUH Precision Ball Bearings	Non-Expansion	3600 rpm	Standard	Powder Coat
3.937 Inch \| 100 Millimeter x 5.906 Inch \| 150 Millimeter x 0.945 Inch \| 24 Millimeter TIMKEN 2MMC9120WI SUM Precision Ball Bearings	15 mm	100 °C	117 mm	8 Nm
2.953 Inch \| 75 Millimeter x 4.528 Inch \| 115 Millimeter x 2.362 Inch \| 60 Millimeter TIMKEN 3MMC9115WI TUH Precision Ball Bearings	33.4 mm	30.2 mm	-20 °C	31.85 kN
3.937 Inch \| 100 Millimeter x 5.906 Inch \| 150 Millimeter x 0.945 Inch \| 24 Millimeter TIMKEN 2MMC9120WI SUH Precision Ball Bearings	32 mm	51 mm	54 mm	89 mm
2.953 Inch \| 75 Millimeter x 4.528 Inch \| 115 Millimeter x 0.787 Inch \| 20 Millimeter TIMKEN 3MMC9115WI SUM Precision Ball Bearings	8 Nm	56.3 mm	62 mm	39.7 mm
3.937 Inch \| 100 Millimeter x 5.906 Inch \| 150 Millimeter x 3.78 Inch \| 96 Millimeter TIMKEN 2MMC9120WI QUM Precision Ball Bearings	M14	PA207N-	8 Nm	15.2 kN
2.953 Inch \| 75 Millimeter x 4.528 Inch \| 115 Millimeter x 0.787 Inch \| 20 Millimeter TIMKEN 3MMC9115WI SUL Precision Ball Bearings	32.4 mm	0.59 kg	40 mm	6.65 kN
1.181 Inch \| 30 Millimeter x 2.165 Inch \| 55 Millimeter x 2.047 Inch \| 52 Millimeter TIMKEN 3MMC9106WI QUL Precision Ball Bearings	P206N-	21 mm	165 mm	18 mm