Optimum Design Precision Bearings

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Optimum 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. An example of designing a grinding machine spindle system is given.

 

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.

 

FAG "— 9201FFT" Optimum Design Precision Bearings

15 CYSD
15,9 mm 35 mm

BARDEN " HCB71908E.T.P4S" Optimum Design Precision Bearings

42,862 mm 76,2 mm
161,925 161,925 mm

FAG "(S)R3H " Optimum Design Precision Bearings

12 ZEN
40 62

BARDEN "108HE " Optimum Design Precision Bearings

0 Inch | 0 Millimete No
31171504 Bearing

12 mm x 32 mm x 10 mm NSK 12BGR02X Optimum Design Precision Bearings

6000 r/min 84 mm
121 mm NU215ECM/HC5C3

17 mm x 40 mm x 12 mm NSK 17BGR02X Optimum Design Precision Bearings

20,9 kN 37 mm
24 mm HK 3024 2RS

BARDEN 1836HC Optimum Design Precision Bearings

50,005 mm 21.43x50.005x17.526
39 kN 50,005

BARDEN 1938HC Optimum Design Precision Bearings

C0 30x62x16
10 RBEC 1

NACHI 20TAB04DF(DB) Optimum Design Precision Bearings

450000 N / Static lo 4,8 mm
5 mm 1,06 kg

BARDEN 234421M.SP Optimum Design Precision Bearings

51 mm 12 mm
SKF 0.81 kN

BARDEN 234722M.SP Optimum Design Precision Bearings

25x62x25 25 mm
17 mm 25

NSK 25TAC62 C10 Optimum Design Precision Bearings

405 mm 192 mm
360 mm NU3172
1/9