Selection of the miniature bearing considerations

1, technology choice. Technology choices include miniature bearing type choice, the choice of the diameter size and precision grade of choice, the choice of the miniature bearing clearance and the choice of have special requirements, under normal circumstances this choice in equipment design and manufacturing process selected by engineering and technical personnel, but in actual use, sometimes can not meet the design demand, which has both the bearing itself quality problem, also has a bearing selection error problem. More common problem is to choose the bearing clearance and the choice of type, clearance choice are: standard clearance ( 0 group, generally does not indicate) , ultra small clearance ( 1 set, with 1 g or C1) And small clearance ( Two groups, with 2 g or C2) , large clearance ( 3 groups, with 3 g or C3) , large clearance ( 4, 5, 4 g or C4 or C5, 5 g) Clearance chosen correctly or not, directly affects the service life of bearing, small clearance of bearing is suitable for mechanical equipments � � � smooth running, small load especially impact load conditions, if the machinery and equipment working conditions, irregular beating even operation, especially the impact load, high temperature of the environment, should choose a big clearance. Type selection according to the load bearing on machining accuracy to determine the size and use what type of bearing. Bearing clearance and the choice of type, is a complex technical work, should be under the guidance of experienced technical staff. 2, brand choice. Must first select the product that well-known enterprises, these enterprises have many years of experience in production of bearing, has the excellent bearing processing equipment, strict process standards, a large number of engaged in bearing research, design, processing of senior engineering and technical personnel, they are the production of miniature bearing all influential brands at home and abroad. Such as: wazhou ZWZ, HRB, shaft, luoyang government, without supporting shaft TWB, northwest shaft axis ZHJ NXZ, the far east, daye DYZV, * * *, Sweden, Germany FAG, Japan NSK, NTN, KOYO, etc. These brand bearings generally recognised by the users at home and abroad. 3, advantages and disadvantages to choose. The pros and cons of miniature bearing, main performance in terms of quality, in most cases only after using can identify. However, in the look and feel also has difference, mainly displays in roughness, roughness, noise value, assembly chamfering, maintaining the frame material is different, bearing of packing also has difference. Normal production of bearing in the bearing bearing model number are printed on the outer packing, trademark and enterprise name, address, telephone number, date of packaging, quality certification, quantity, weight, anti-counterfeiting tags, or wrapped in the package there a manufacturer's certificate ( Import and export except bearing) , its content has the bearing model, trademark and enterprise name, address, telephone number, date of packaging, quality standard, inspection chapter, quality certification, inspectors signature, instructions, printed on the bearing bearing models, trademarks, vintage, printed using triangle symmetry. 4, the purchase channel choice. Inferior products in the current bearing the market, under the condition of true and false difficult argument, it is best to choose to have the strength of � � � type bearing distributors as the main supply channel, the seller should possess three conditions: one is a well-known enterprise and brand sales distributor qualifications, to have real and effective sales certificate and agreement; Second, must have enough quantity and specifications of the inventory, the inventory of products must be purified, and direct purchase from the manufacturer; Three is to have a sales professional business, technical service, timely present service when necessary.