Comparing Two Bearing Operating Costs Of Ball Mill

May 2002, 1 tobearings, change the motor power 350kw

, ball load of 32.5t and other conditions of useremain the same as before, after years of operation, is the use of two kinds of bearings a comparison (annual production of 10 months 300d).

A bearing

1) plain bearings

Sliding bearings of the company (lead-based alloy W) is generally three years pouringone takes 4000 yuan, each lead-based alloys, therefore, bearing wear, the average annual maintenance cost of 1333 yuan. When I first joined the lubricant 120kg each yearfor two oil and run on average every two weeks, added oil 15kg. The oil price of 5 yuan /kg, the annual cost of (120 2 +15 2 10) 5 = 2700.

2) Rolling

The two sets of rolling bearings of the price of 90,000 yuan, the design life of 10 years,Rolling wear planned depreciation cost of 09,000 yuan / year. When I first joined grease60kg, running each month to join 8kg, grease the price of 7 yuan / kg, the annual cost of(60 +8 10) 7 = 980.

2 consumption motor power factor cos = 0.85, 3 records voltage, current data formula p power = uicos,, to calculate the energy consumption shown in Table 1.

An average of three times, Rolling than the sliding bearing energy-saving 4.3kw, 1.3%margin. If the tariff by 0.5 yuan / kwh meter, the difference between the annual electricity bill of 4.3 300 24 0.5 = 15 480 yuan.

3 Conclusion

Bearing wear, depreciation, fuel consumption and power consumption compared to therolling bearing wear and fuel consumption costs than the sliding bearing more than 5947 yuan per year, but of Rolling mill to save electricity than the sliding bearing years 15,480 yuan.

With its high quality products such as Cement rotating dryer, Vibrating screen, China cone crusher, Impact crusher, Sand maker, Henan Hongxing mining machinery Co.Ltd has ascended in the front rank of the world in the exporting of mining equipments.

by: nicole

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