Precision Ball Bearings

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Miniature Precision Ball Bearings for Specialized Industries. Miniature Precision Bearings are identified by having an internal diameter of less than 3/8 inches (9.5 mm) while still containing the same components used in standard radial ball bearings.Higher precision bearings are available in ball bearings, angular contact ball bearing, ball screw support bearings, cylindrical roller bearings, spherical roller bearings and tapered roller bearings. The most common high precision bearing is the angular contact bearing, also referred to as a spindle bearing.

Precision Ball Bearings . Shielded. Sealed. For greater accuracy and higher speeds, these bearings are made to tighter tolerances than standard ball bearings. Shielded bearings dissipate heat more efficiently than sealed bearings. Sealed bearings block out dust and other contaminants better than shielded bearings.

Bearing Number	Bore Dia	Outer DIa	Width	Size
4.331 Inch \| 110 Millimeter x 5.906 Inch \| 150 Millimeter x 1.575 Inch \| 40 Millimeter TIMKEN 2MMC9322WI DUL Precision Ball Bearings	1.5000 in	2150 lbf	5.6719 in	1080 lbf
3.937 Inch \| 100 Millimeter x 5.512 Inch \| 140 Millimeter x 3.15 Inch \| 80 Millimeter TIMKEN 2MMC9320WI QUM Precision Ball Bearings	1.5000 in	5-1/8 in	2.9375 in	4-1/2 in
3.937 Inch \| 100 Millimeter x 5.512 Inch \| 140 Millimeter x 3.15 Inch \| 80 Millimeter TIMKEN 2MMC9320WI QUL Precision Ball Bearings	7/16 in	50000	9/16 in	2000
3.937 Inch \| 100 Millimeter x 5.512 Inch \| 140 Millimeter x 1.575 Inch \| 40 Millimeter TIMKEN 2MMC9320WI DUM Precision Ball Bearings	2.1875 in	Round	Four-Bolt Base	Cast Iron
3.346 Inch \| 85 Millimeter x 4.724 Inch \| 120 Millimeter x 2.835 Inch \| 72 Millimeter TIMKEN 2MMC9317WI QUM Precision Ball Bearings	35 mm	15.3 kN	72 mm	Not Rated
3.543 Inch \| 90 Millimeter x 4.921 Inch \| 125 Millimeter x 1.417 Inch \| 36 Millimeter TIMKEN 2MMC9318WIDUXFS633 Precision Ball Bearings	1.5000 in	2150 lbf	5.6719 in	1080 lbf
3.346 Inch \| 85 Millimeter x 4.724 Inch \| 120 Millimeter x 1.417 Inch \| 36 Millimeter TIMKEN 2MMC9317WI DUM Precision Ball Bearings	35 mm	128.6 mm	63.5 mm	101.6 mm
3.937 Inch \| 100 Millimeter x 5.512 Inch \| 140 Millimeter x 1.575 Inch \| 40 Millimeter TIMKEN 2MMC9320WI DUL Precision Ball Bearings	17 mm	93.7 mm	50.8 mm	88.9 mm
3.543 Inch \| 90 Millimeter x 4.921 Inch \| 125 Millimeter x 2.835 Inch \| 72 Millimeter TIMKEN 2MMC9318WI QUM Precision Ball Bearings	12 mm	2150 lbf	63.5 mm	1080 lbf
3.543 Inch \| 90 Millimeter x 4.921 Inch \| 125 Millimeter x 1.417 Inch \| 36 Millimeter TIMKEN 2MMC9318WI DUM Precision Ball Bearings	85 mm	322 mm	180 mm	270 mm
3.543 Inch \| 90 Millimeter x 4.921 Inch \| 125 Millimeter x 2.835 Inch \| 72 Millimeter TIMKEN 2MMC9318WI QUL Precision Ball Bearings	AIR3	-	-	-
3.543 Inch \| 90 Millimeter x 4.921 Inch \| 125 Millimeter x 1.417 Inch \| 36 Millimeter TIMKEN 2MMC9318WI DUL Precision Ball Bearings	17 mm	8.65 kN	35 mm	4.9 kN