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 \| 19.99 Millimeter x 1.85 Inch \| 46.99 Millimeter x 2.5 Inch \| 63.5 Millimeter TIMKEN MM9306WI 2H QUH Precision Ball Bearings	1.3125 in	2150 lbf	5.1250 in	1080 lbf
0.787 Inch \| 19.99 Millimeter x 1.85 Inch \| 46.99 Millimeter x 1.25 Inch \| 31.75 Millimeter TIMKEN MM9306WI 2H DUH Precision Ball Bearings	1.2500 in	Dual Lip with Slinger	2.4375 in	4-59/64 in
1.181 Inch \| 30 Millimeter x 1.85 Inch \| 47 Millimeter x 0.354 Inch \| 9 Millimeter TIMKEN MM9306K Precision Ball Bearings	0.5000 in	7/8 in	Round	1-11/16 in
0.787 Inch \| 20 Millimeter x 1.457 Inch \| 37 Millimeter x 0.354 Inch \| 9 Millimeter TIMKEN MM9304K Precision Ball Bearings	1.4375 in	5820 lbf	3.9375 in	3460 lbf
0.984 Inch \| 25 Millimeter x 1.654 Inch \| 42 Millimeter x 0.354 Inch \| 9 Millimeter TIMKEN MM9305K Precision Ball Bearings	1.2500 in	2150 lbf	5.1250 in	1080 lbf
1.75 Inch \| 44.45 Millimeter x 3.438 Inch \| 87.325 Millimeter x 1.625 Inch \| 41.275 Millimeter TIMKEN MM92EX 250 DU C1 Precision Ball Bearings	1.4375 in	2 in	Round	1-1/4 in
1.75 Inch \| 44.45 Millimeter x 3.438 Inch \| 87.325 Millimeter x 1.625 Inch \| 41.275 Millimeter TIMKEN MM92EX 150 DU C1 Precision Ball Bearings	Straight Bushing	49 N/mm²	100 mm	3.60 N/mm² - m/s
1.75 Inch \| 44.45 Millimeter x 3.438 Inch \| 87.325 Millimeter x 1.625 Inch \| 41.275 Millimeter TIMKEN MM92EX 20 DU C1 Precision Ball Bearings	1.0000 in	Chrome-Plated Steel	7 °	Steel, PTFE Fabric
5.512 Inch \| 140 Millimeter x 8.268 Inch \| 210 Millimeter x 1.299 Inch \| 33 Millimeter TIMKEN MM9128K Precision Ball Bearings	4.5000 in	Double Sealed	5.0000 in	C0
5.118 Inch \| 130 Millimeter x 7.874 Inch \| 200 Millimeter x 1.299 Inch \| 33 Millimeter TIMKEN MM9126K Precision Ball Bearings	1.5000 in	2150 lbf	5.6719 in	1080 lbf
4.724 Inch \| 120 Millimeter x 7.087 Inch \| 180 Millimeter x 1.102 Inch \| 28 Millimeter TIMKEN MM9124K Precision Ball Bearings	1.2500 in	5820 lbf	PBT Thermoplastic	3460 lbf
1.575 Inch \| 40 Millimeter x 2.677 Inch \| 68 Millimeter x 0.591 Inch \| 15 Millimeter TIMKEN MM9108K Precision Ball Bearings	90 mm	2150 lbf	265 mm	1080 lbf