Optimum Internal Design Precision Bearings

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Optimum Internal Design Precision Bearings with hydrostatic bearings is presented. In this model the whole system is divided into subsystems. Each of these subsystems is modelled in order to obtain an optimization considering the global criteria of the system. A four-stage multicriterion optimization strategy is applied to solve the problem. On the basis of this strategy, which has a heuristic character, a computer aided optimum design software package for spindle systems for grinding and lathe machine tools is developed. 

 

The optimization problem is formulated with a view to maximizing the load-carrying capacity of hydrostatic journal bearings. Equations governing the performance of multi-recess hydrostatic journal bearings are summarized. Practical design limits and operational constraints are also defined. The optimization process is based on the well known method. Results illustrating the effect of area ratio, axial land width and circumferential land width on load capacity, flow rate and power ration are reported. In conclusion precision bearings with small clearances and low pressure ratios are recommended for applications involving low supply pressures, while bearings with large clearances and pressure ratios close to 0.5 are recommended for applications involving high supply pressures.

 

BARDEN " B7004C.T.P4S" Optimum Internal Design Precision Bearings

2 mm 168 mm
10.8 kg 3 mm

BARDEN " HCB7206C.T.P4S" Optimum Internal Design Precision Bearings

83 mm SKF
N/A 0.025

NTN 【60˚】5629/5629M Optimum Internal Design Precision Bearings

187 mm Timken
114,3 130 mm

10 mm x 22 mm x 6 mm NSK 10BGR19H Optimum Internal Design Precision Bearings

422,275 CX
5,6 mm 82,55

130 mm x 200 mm x 31,5 mm NSK 130BAR10H Optimum Internal Design Precision Bearings

ISO NJ28/600
730 78 mm

NACHI 17TAB04-2NKE Optimum Internal Design Precision Bearings

SF4818 40,000
240x329.500x40 329,500

BARDEN 1840HE Optimum Internal Design Precision Bearings

62 FBJ
22,5 kN 17

NSK 20TAC47X C11 Optimum Internal Design Precision Bearings

120 °C 0.01 kg
1.41 kN 0.3 mm

FAG 234426M.SP Optimum Internal Design Precision Bearings

20 20 mm
0,082 Kg 0,3 mm

FAG 234726M.SP Optimum Internal Design Precision Bearings

Timken 110
46,038 mm 0,8 mm

NSK 260TAC29D+L Optimum Internal Design Precision Bearings

250 58 mm
NACHI 250 mm
1/9