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
0.787 Inch \| 20 Millimeter x 1.85 Inch \| 47 Millimeter x 2.362 Inch \| 60 Millimeter TIMKEN MM20BS47Q A4256 Precision Ball Bearings	26.4000 in	87.1 in²	3.2100 in	174 lbs
0.787 Inch \| 20 Millimeter x 1.85 Inch \| 47 Millimeter x 1.181 Inch \| 30 Millimeter TIMKEN MM20BS47DUH FS954 Precision Ball Bearings	12 mm	975 kgf	63.5 mm	490 kgf
0.787 Inch \| 20 Millimeter x 1.85 Inch \| 47 Millimeter x 1.181 Inch \| 30 Millimeter TIMKEN MM20BS47DL Precision Ball Bearings	2.1250 in	9700 lbf	3.9370 in	6610 lbf
0.787 Inch \| 20 Millimeter x 1.85 Inch \| 47 Millimeter x 1.181 Inch \| 30 Millimeter TIMKEN MM20BS47 DUH Precision Ball Bearings	130 mm	670000 N	280 mm	Not Rated
1.772 Inch \| 45 Millimeter x 3.346 Inch \| 85 Millimeter x 0.748 Inch \| 19 Millimeter TIMKEN MM209K Precision Ball Bearings	1.2500 in	7530 lbf	4.0000 in	4320 lbf
0.787 Inch \| 20 Millimeter x 1.85 Inch \| 47 Millimeter x 2.362 Inch \| 60 Millimeter TIMKEN MM20BS47 QH Precision Ball Bearings	1.4375 in	5-43/64 in	3.2656 in	4-39/64 in
0.787 Inch \| 20 Millimeter x 1.85 Inch \| 47 Millimeter x 1.181 Inch \| 30 Millimeter TIMKEN MM20BS47 DUHFS637 Precision Ball Bearings	1 in	Maximum of +800 °F	1-1/4 in	75000
0.787 Inch \| 20 Millimeter x 1.85 Inch \| 47 Millimeter x 2.362 Inch \| 60 Millimeter TIMKEN MM20BS47 QUH Precision Ball Bearings	2.7500 in	23400 lbf	7.0000 in	15200 lbf
1.575 Inch \| 40 Millimeter x 3.15 Inch \| 80 Millimeter x 0.709 Inch \| 18 Millimeter TIMKEN MM208PP US2 Precision Ball Bearings	0.9375 in	3150 lbf	PBT Thermoplastic	1780 lbf
1.575 Inch \| 40 Millimeter x 3.15 Inch \| 80 Millimeter x 0.709 Inch \| 18 Millimeter TIMKEN MM208K Precision Ball Bearings	1.0000 in	2150 lbf	3.8906 in	1080 lbf
1.181 Inch \| 30 Millimeter x 2.441 Inch \| 62 Millimeter x 0.63 Inch \| 16 Millimeter TIMKEN MM206K Precision Ball Bearings	55 mm	118000 N	100 mm	8700 rpm
1.378 Inch \| 35 Millimeter x 2.835 Inch \| 72 Millimeter x 0.669 Inch \| 17 Millimeter TIMKEN MM207K SU A3101 Precision Ball Bearings	1 in	17.5 N/mm²	1-1/4 in	0.85 m/s SFPM