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
1.181 Inch \| 30 Millimeter x 2.835 Inch \| 72 Millimeter x 1.181 Inch \| 30 Millimeter TIMKEN MM30BS72 DUM Precision Ball Bearings	200 mm	1:30	138 mm	AH240
1.181 Inch \| 30 Millimeter x 2.835 Inch \| 72 Millimeter x 1.181 Inch \| 30 Millimeter TIMKEN MM30BS72 DUH Precision Ball Bearings	1.7500 in	Contact Seal	Medium Duty	200
1.181 Inch \| 30 Millimeter x 2.441 Inch \| 62 Millimeter x 1.181 Inch \| 30 Millimeter TIMKEN MM30BS62P DFL Precision Ball Bearings	3.9375 in	Non-Expansion Bearing (Fixed)	6.6300 in	Labyrnith non-contacting, non-purging seal with DuPont™ Teflon®
1.969 Inch \| 50 Millimeter x 3.15 Inch \| 80 Millimeter x 1.26 Inch \| 32 Millimeter SKF 7010 CE/P4ADGA Precision Ball Bearings	50 mm	6300 kgf	130.2 mm	3900 kgf
1.772 Inch \| 45 Millimeter x 3.937 Inch \| 100 Millimeter x 0.984 Inch \| 25 Millimeter SKF 6309 Y/C782 Precision Ball Bearings	O1 Tool Steel	±0.001 in	18 in	+0.000/+0.005 in
1.772 Inch \| 45 Millimeter x 3.937 Inch \| 100 Millimeter x 0.984 Inch \| 25 Millimeter SKF 6309 Y/C78 Precision Ball Bearings	2.5000 in	2.9000 in	10.2500 in	Non-Expansion Bearing (Fixed)
1.772 Inch \| 45 Millimeter x 3.937 Inch \| 100 Millimeter x 0.984 Inch \| 25 Millimeter SKF 6309 TC/C782 Precision Ball Bearings	0.8750 in	19300 lbf	2.0000 in	3300 RPM
1.969 Inch \| 50 Millimeter x 5.512 Inch \| 140 Millimeter x 4.252 Inch \| 108 Millimeter TIMKEN MMF550BS140DDQM Precision Ball Bearings	1.8750 in	13900 lbf	5.1250 in	8600 lbf
4 Inch \| 101.6 Millimeter x 5.709 Inch \| 145.009 Millimeter x 1.75 Inch \| 44.45 Millimeter TIMKEN MM9321WI3DUH Precision Ball Bearings	70 mm	29 N/mm2;Static 150 N/mm2	90 mm	Dry 0.50;Periodic lubrication 1.0 m/s
1.575 Inch \| 40 Millimeter x 3.937 Inch \| 100 Millimeter x 1.339 Inch \| 34 Millimeter TIMKEN MMF540BS100PP DM Precision Ball Bearings	1.0000 in	3-57/64 in	1.7656 in	3-31/64 in
1.378 Inch \| 35 Millimeter x 3.543 Inch \| 90 Millimeter x 0.591 Inch \| 15 Millimeter TIMKEN MMF535BS90PP DM Precision Ball Bearings	4.0000 in	Non-Expansion Bearing (Fixed)	6.6300 in	Labyrnith non-contacting, non-purging seal with DuPont™ Teflon®
2.362 Inch \| 60 Millimeter x 5.709 Inch \| 145 Millimeter x 1.772 Inch \| 45 Millimeter TIMKEN MMF560BS145PPDM Precision Ball Bearings	1.1875 in	4410 lbf	3.2500 in	2540 lbf