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
1.969 Inch \| 50 Millimeter x 3.543 Inch \| 90 Millimeter x 3.15 Inch \| 80 Millimeter TIMKEN 3MM210WI QUH Precision Ball Bearings	0.2500 in	2165 lbs	27 °	Self Lubricating
1.969 Inch \| 50 Millimeter x 3.543 Inch \| 90 Millimeter x 0.787 Inch \| 20 Millimeter TIMKEN 3MM210WI SUM Precision Ball Bearings	60 mm	Without Snap Ring	85 mm	C0
1.969 Inch \| 50 Millimeter x 2.835 Inch \| 72 Millimeter x 0.945 Inch \| 24 Millimeter TIMKEN 3MM9310WI DUL Precision Ball Bearings	70 mm	24.5 (250) Static 49 (500)	75 mm	0.4 m/s
1.969 Inch \| 50 Millimeter x 3.543 Inch \| 90 Millimeter x 0.787 Inch \| 20 Millimeter TIMKEN 3MM210WI SUL Precision Ball Bearings	1.0000 in	2680 lbf	3.0000 in	1420 lbf
1.969 Inch \| 50 Millimeter x 2.835 Inch \| 72 Millimeter x 0.945 Inch \| 24 Millimeter TIMKEN 3MM9310WI DUH Precision Ball Bearings	17 mm	2150 lbf	56 mm	1080 lbf
1.969 Inch \| 50 Millimeter x 3.543 Inch \| 90 Millimeter x 1.575 Inch \| 40 Millimeter TIMKEN 3MM210WI DUL Precision Ball Bearings	2.4375 in	2.7000 in	10.8800 in	Non-Expansion Bearing (Fixed)
1.969 Inch \| 50 Millimeter x 3.543 Inch \| 90 Millimeter x 1.575 Inch \| 40 Millimeter TIMKEN 3MM210WI DUM Precision Ball Bearings	2.5000 in	3.2500 in	10.2500 in	Non-Expansion Bearing (Fixed)
1.772 Inch \| 45 Millimeter x 3.346 Inch \| 85 Millimeter x 0.748 Inch \| 19 Millimeter TIMKEN 3MM209WI SUM Precision Ball Bearings	50 mm	149.2 mm	85.7 mm	117.5 mm
1.772 Inch \| 45 Millimeter x 2.677 Inch \| 68 Millimeter x 1.417 Inch \| 36 Millimeter TIMKEN 3MM9309WI TUM Precision Ball Bearings	0.2500 in	320 lb	.6560 in	Grease
1.772 Inch \| 45 Millimeter x 3.346 Inch \| 85 Millimeter x 0.748 Inch \| 19 Millimeter TIMKEN 3MM209WI SUL Precision Ball Bearings	0.7500 in	Alloy Steel	1.4375 in	52100 Bearing Steel Heat Treated Chrome Plated
1.969 Inch \| 50 Millimeter x 3.543 Inch \| 90 Millimeter x 1.575 Inch \| 40 Millimeter TIMKEN 3MM210WI DUH Precision Ball Bearings	1-3/8 in	Black	Open End Cap	PBT Thermoplastic
1.772 Inch \| 45 Millimeter x 3.346 Inch \| 85 Millimeter x 2.244 Inch \| 57 Millimeter TIMKEN 3MM209WI TUM Precision Ball Bearings	0.3750 in	9570 lb	6 °	957 lb