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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>Spoofing koyo bearing hazards and extending their life skills Counterfeit koyo bearing hazards and the skills to extend their life
First, the fake koyo bearing hazard <br> According to statistics; at that time, the market share of small manufacturers bearing and shoddy bearings exceeded 60%; in some areas the occupancy rate even exceeded 80%. But the inferior bearing due to its inherent quality defects and lower The precision is very harmful; then it brings a huge loss to the user. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
1. Its immense skill constraints directly affect the precision of these bearings; making this problem an insurmountable flaw; and the precision distance not only directly jeopardizes the components of the machine; it also makes bearing loading and unloading a rather cumbersome task; Can not be installed; can not be unloaded; directly harm the machine, delay work hours.
2, due to the constraints of the bonfire skills of small manufacturers and underground factories; the cylinder bonfire of the inferior bearing is not uniform due to the heating temperature; then it affects the precision of the bearing;
3, due to the constraints of the original data; the hardness of the inferior bearing does not meet the national demand. In the application will show deformation and other conditions; then affect its life; damage other parts of the machine. Especially some high-temperature bearings and high-speed bearings; bearings The hardness directly affects its service life and operational safety.
4, some small manufacturers and illegal processing plants in order to reduce costs; the use of residual steel, Ma Steel, carbon steel and other raw materials; together in the production process to reduce the process; these products in the process of simple problems; even directly make the machine Obsolete.
In order to protect their own rights and interests; consumers in addition to enhance their own legal awareness; also learn to identify, select genuine bearings; and then avoid the formation of equipment can not be corrected.
Second, the new layout of the seal can extend its life <br> If the movable bearing is used in harsh environments; bearing seals and seals are indispensable; because they can avoid the intrusion of dirt; extend the life of the bearing. The rolls are generally supported by four rows of sealed tapered roller bearings. They are subjected to intense impact loads, water and debris intrusion.
Ultra-simple sealed sanitary roller neck developed by NSK Japan. This kind of bearing is under strict smooth condition; the load is improved by 34%; and the reliability is high, the life is long, and it is easy to protect. This function improvement is to optimize the mechanical drawing. The result of selecting new materials and patent sealing skills. Compared with the traditional roller-neck bearing; this sealed roller-neck bearing not only has an additional dynamic load of 34%; and the lifespan has extended by 2.7 times.
The second element of the advancement of super-capacity sealing sanitary roller neck bearing; it is the selection of Super-TF bearing steel developed by NSK. This data deals with the bearing life problem under the condition of pollution or lack of smoothness. Under contaminated working conditions; bearings are susceptible to debris ingress and contamination. NSK's research indicates that bearing life under contaminant or marginal smooth conditions can be improved by improving the microscopic layout of bearing steel. The new seal layout is the main seal and hole. seal.
Negative pressure in the bearing can form water intrusion from the main seal; the layout of the hole seal has a large effect on the negative pressure. Thus, the negative pressure in the down bearing is the fundamental requirement to avoid water ingress. The most useful way is to seal the hole. Do not directly touch the water; save the original function of the hole seal to avoid water and dirt from invading the side of the roll neck. The sealing method uses the external touch instead of the line touch; whether it is the work process; the process is still stopped; the external touch hole seal is It has the characteristics of good sealing. Therefore, the new ultra-capacity sealed sanitary roller neck bearing has higher reliability than the traditional sealed roller neck bearing.
Else; SKF Bearings Italy Seals has recently developed a new generation of oil and grease seals Mud Block. Its optimized depiction of the seal layout can be useful to avoid soil intrusion. The traditional seal layout is a radial seal lip, OD and seat. There is a card tension spring and a fixed sealing ring between the rings. The new layout has a push baffle between the bushing and the sealing ring; the outer surface of the sealing ring and the inner diameter of the bushing are rubber; the inner lip is pre-preserved with waterproof grease Smooth. Depending on working conditions and usage requirements; Mud Block can be made from a variety of elastic materials. These materials include: nitrile, polyacrylate, fluorinated synthetic rubber and so on.
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Counterfeit koyo bearing hazards and the skills to extend their life
Source: China Bearing Network Time: 2014-06-27