INA sliding bearing used in the damage for the importance of maintenance

Bearing the accurate maintenance is an effective way to reduce early bearing damage, is also the reliable guarantee for extend the service life of INA bearings. Therefore, in the idea in the daily maintenance and repair, must pay attention to the surface of sliding bearing alloy, the back end and the appearance of edge angles in appearance, such as abnormal or half signs of wear and tear on the to really find out the reason, and adopt corresponding measures to improve the bearing working premise, for the prevention of early damage of the sliding bearing in the face. 1, the progress of bearing maintenance and assembly quality improvement of bearing hinge with quality, ensure the INA bearing on the smooth without freckles, positioning bumps intact; Bounce off amount of 0. 5 - 1. 5 mm, this guarantees that after assembly bearing with the aid of its elasticity and bearing hole joint closely; In addition, to pay attention to check the crankshaft journal and bearing assembly processing quality, the strict repair technology standard, prevent the installation is not straight caused by improper loading method and uneven bearing bolt torque or do not conform to the designated, resulting in a bending deformation and the stress concentration, lead to early damage of the bearing. 2, improve the bearing design and manufacturing process design or choose imported bearing, want to consider the heat balance to control the temperature rise of bearing because of INA bearings work in clean condition, because of the lubricating oil liquid internal friction ( The viscosity) Into power and heat caused by sliding bearing temperature rise, lubricating oil. Change, viscosity reduction, gap will soften the babbitt bearing, serious when produce tile burning holding shaft accidents. Therefore, in the structure design, from on the bearing bush ( The bearing area) At the top of the oil into the hole, the lubricating oil from the bearing area introduction; In the middle of the bearing inner surface oil hole as along the longitudinal or transverse groove, conducive to average distribution of the lubricating oil to control the temperature rise on the journal. Correct selection of lubricant standard includes bearing type and size, temperature, speed, load and the desired service life and supplemental lubrication cycle. Initial radial clearance of bearing in the process of into reduced gradually, and pushed into the amount of size decide to cooperate. Prior to installation, therefore, must first measure the initial radial clearance of roller bearing. In the process of INA bearing push, continuously measure the radial clearance, until meet the requirements of radial clearance is reduce the amount and range of the ideal. Due to the temperature by lubrication, rotational speed, load, the influence of the environment. Bearing lubrication effect of lubrication on the fatigue life of rolling bearing, friction and wear, temperature rise, vibration and so on have important influence, not normal lubrication, bearing cannot work. Analyze the failure reasons of bearing show that about 40% of the bearing damage is related to bad lubrication. Therefore, good lubrication of roller bearing is an effective measure to reduce the bearing friction and wear. In addition to this, the sliding bearing lubrication and cooling, sealing, rust and moderate impact of a number of roles, the role of bearing lubrication can be illustrated briefly as follows: a. The contact between two rolling or sliding surface formed between a layer of oil film separates two surface, reduce the friction and wear of contact surface. b。 Using oil lubrication, especially the circulating oil lubrication, oil mist lubrication and oil lubrication, the bearing lubricating oil take most of the internal friction heat, effective heat dissipation effect. c。 Using grease lubrication, can prevent external dust and other foreign body into the INA bearing, sealing effect. d。 Lubricant function to prevent corrosion of metal. e. Extend the fatigue life of roller bearings.