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the article citations: time:2014-12-16 11:01:14
1, selection of clearance: user when buying deep groove ball bearings generally just let us know in what type, grade, rarely for deep groove ball bearing clearance request, business people must ask use conditions of deep groove ball bearings, deep groove ball bearings of the speed, temperature, tolerance is directly related to the choice of deep groove ball bearing clearance. generally under 3500 rpm speed motor mostly adopts cm clearance, such as high temperature and high speed motor, require the use of relatively large clearance. clearance after assembly will rise because of the inner hole and cylindrical reduction and lead to reduce, the reduction of clearance = interference quantity x 60% (except the deep groove ball bearing chamber is aluminum). such as deep groove ball bearing clearance is 0.01 mm, before assembly interference when assembling the amount of 0.01 mm, is deep groove ball bearing assembly after the clearance is 0.004 mm. deep groove ball bearings in zero clearance in theory when the noise and life are the best state, but in actual operation considering the problems such as temperature, deep groove ball bearing in the assembly after the clearance of 0.002 mm to 0.004 mm is better.
2, the choice of grease: the choice of grease is generally based on the speed of the deep groove ball bearing, heat resistance, noise requirements and choose starting torque, etc, require business personnel to the performance of a variety of oils and fats to be understood.
3, the choice of deep groove ball bearing seal type: lubrication can be divided into oil lubrication and grease lubrication. lubrication deep groove ball bearings are generally choose form deep groove ball bearings, grease lubrication is generally selected deep groove ball bearing dust cover or seal rubber seals. dust cover suitable for high temperature or the use of good parts, seal two points contact seal and non-contact seal and contact seal dustproof performance is good but the starting torque, the sealing type starting torque is small, but there is no contact sealing performance is good.
humanistic in the deep groove ball bearings, auto motor home appliances deep groove ball bearings, deep groove ball bearings, care motor has carried on the deep groove ball bearing industry specialization manufacturing, make the deep groove ball bearing noise and life to achieve the best state.
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