Precision Ball Bearings

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Super Precision Bearings are designed to meet demanding needs of special applications including high accuracy, high rotational speed and high rigidity. Optimal materials and internal design, give super precision bearings the highest level of accuracy. NSK offers several types of super precision bearing, including the ROBUST series.

Product Features and Benefits:Optimum design - Achieved by computer simulation of temperature rise resulting from ball skid.Long life - Range of material specification including high quality ultra clean steel, extra pure and advanced material SHX patented by NSK. High accuracy - Rolling elements with precision class P2 series available in standard steel and ceramic material. Low Noise - Quieter running high-speed spindle featuring Spinshot II Lubrication System. Extension range of cage material options, available in high speed design including - brass, engineered polymer and phenolic. Optional seals available within the standard ISO envelope. High rotational speed. Minimum friction and heat generation.Controlled rigidity

Bearing Number	Bore Dia	Outer DIa	Width	Size
0.591 Inch \| 15 Millimeter x 1.102 Inch \| 28 Millimeter x 1.102 Inch \| 28 Millimeter TIMKEN 3MMC9302WI QUM Precision Ball Bearings	40 mm	1830 kgf	111.1 mm	Contact with Flinger
0.591 Inch \| 15 Millimeter x 1.102 Inch \| 28 Millimeter x 1.102 Inch \| 28 Millimeter TIMKEN 3MMC9302WI QUL Precision Ball Bearings	2.7500 in	3.1300 in	10.4400 in	Non-Expansion Bearing (Fixed)
0.591 Inch \| 15 Millimeter x 1.102 Inch \| 28 Millimeter x 0.551 Inch \| 14 Millimeter TIMKEN 3MMC9302WI DUM Precision Ball Bearings	20 mm	Steel	14 °	Bronze
0.591 Inch \| 15 Millimeter x 1.102 Inch \| 28 Millimeter x 0.551 Inch \| 14 Millimeter TIMKEN 3MMC9302WI DUL Precision Ball Bearings	1.2500 in	2150 lbf	5.1250 in	1080 lbf
0.472 Inch \| 12 Millimeter x 0.945 Inch \| 24 Millimeter x 0.945 Inch \| 24 Millimeter TIMKEN 3MMC9301WI QUM Precision Ball Bearings	Two-Bolt Base	3.6875 in	1.3750 in	1-15/16 in
0.472 Inch \| 12 Millimeter x 0.945 Inch \| 24 Millimeter x 0.945 Inch \| 24 Millimeter TIMKEN 3MMC9301WI QUL Precision Ball Bearings	35 mm	10300 N	62 mm	Not Rated
5.906 Inch \| 150 Millimeter x 8.858 Inch \| 225 Millimeter x 2.756 Inch \| 70 Millimeter TIMKEN 2MMC9130WI DUH Precision Ball Bearings	1.2500 in	4410 lbf	PBT Thermoplastic	2540 lbf
3.15 Inch \| 80 Millimeter x 4.331 Inch \| 110 Millimeter x 1.26 Inch \| 32 Millimeter TIMKEN 3MMC9316WI DUM Precision Ball Bearings	55 mm	171 mm	95 mm	146 mm
3.15 Inch \| 80 Millimeter x 4.331 Inch \| 110 Millimeter x 1.26 Inch \| 32 Millimeter TIMKEN 3MMC9316WI DUL Precision Ball Bearings	1.4375 in	7980 lbf	4.3750 in	5220 lbf
2.953 Inch \| 75 Millimeter x 4.134 Inch \| 105 Millimeter x 2.52 Inch \| 64 Millimeter TIMKEN 3MMC9315WI QUM Precision Ball Bearings	1.9375 in	Set Screw	Standard Duty	Clearance/Non-Contact
5.512 Inch \| 140 Millimeter x 8.268 Inch \| 210 Millimeter x 3.898 Inch \| 99 Millimeter TIMKEN 2MMC9128WI TUM Precision Ball Bearings	20 mm	1040 lb	42 mm	Ceramic
2.953 Inch \| 75 Millimeter x 4.134 Inch \| 105 Millimeter x 2.52 Inch \| 64 Millimeter TIMKEN 3MMC9315WI QUL Precision Ball Bearings	11/16 in	+10 to +220 °F	7/8 in	50000