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
4.134 Inch \| 105 Millimeter x 6.299 Inch \| 160 Millimeter x 3.071 Inch \| 78 Millimeter TIMKEN 3MM9121WI TUH Precision Ball Bearings	Flanged Sleeve	0.65 m/s	5 mm	49 N/mm2;Static 137 N/mm2
4.134 Inch \| 105 Millimeter x 6.299 Inch \| 160 Millimeter x 1.024 Inch \| 26 Millimeter TIMKEN 3MM9121WI SUL Precision Ball Bearings	125 mm	Single Flanged	68 mm	Steel
4.134 Inch \| 105 Millimeter x 6.299 Inch \| 160 Millimeter x 1.024 Inch \| 26 Millimeter TIMKEN 3MM9121WI SUH Precision Ball Bearings	17 mm	1310 kgf	64 mm	680 kgf
4.134 Inch \| 105 Millimeter x 6.299 Inch \| 160 Millimeter x 4.094 Inch \| 104 Millimeter TIMKEN 3MM9121WI QUM Precision Ball Bearings	1.2500 in	4410 lbf	3.5625 in	2540 lbf
4.134 Inch \| 105 Millimeter x 6.299 Inch \| 160 Millimeter x 4.094 Inch \| 104 Millimeter TIMKEN 3MM9121WI QUL Precision Ball Bearings	2.1250 in	Contact with Flinger	6.0000 in	2.189 in
4.134 Inch \| 105 Millimeter x 6.299 Inch \| 160 Millimeter x 4.094 Inch \| 104 Millimeter TIMKEN 3MM9121WI QUH Precision Ball Bearings	1 in	Maximum of +800 °F	1-3/16 in	75000
4.134 Inch \| 105 Millimeter x 6.299 Inch \| 160 Millimeter x 2.047 Inch \| 52 Millimeter TIMKEN 3MM9121WI DUM Precision Ball Bearings	1.3750 in	2150 lbf	5.1250 in	1080 lbf
3.543 Inch \| 90 Millimeter x 4.921 Inch \| 125 Millimeter x 0.709 Inch \| 18 Millimeter TIMKEN 3MMVC9318HX SUL Precision Ball Bearings	80 mm	2150 lbf	233 mm	1080 lbf
3.543 Inch \| 90 Millimeter x 4.921 Inch \| 125 Millimeter x 0.709 Inch \| 18 Millimeter TIMKEN 3MMVC9318HX SUM Precision Ball Bearings	75 mm	6750 kgf	130 mm	4900 kgf
3.543 Inch \| 90 Millimeter x 4.921 Inch \| 125 Millimeter x 1.417 Inch \| 36 Millimeter TIMKEN 3MMVC9318HX DUL Precision Ball Bearings	1.9375 in	Single Concentric Collar	4.0700 in	Non-Expansion Bearing (Fixed)