Imported bearing characteristics of the work and common materials

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Imported bearing is widely used mechanical support. Its function is guaranteed to bearing have enough life conditions, to support shaft and shaft parts, and with stand relative rotation, such as swing motion, rotate vice fric tion between reduce as far as possible, to get a higher transmission efficiency. Commonly used imported bearing has formulated the national standard, it is the use of rolling friction principle design in the professional chemical plant batch production standard. In the mechanical design according to the working conditions by the appropriate import bearing type and model for composite structure design.sealed bearings
Compared with sliding bearing, import bearing has the following advantages: (1) application design simple, products have been standardized, and the professional manufacturer for mass production, with excellent compatibility and generality. (2) starting moment of friction is low, less power consumption, import bearing efficiency (0.98-0.99) than mixed lubrication bearing high. (3) load, speed and working temperature to adapt to a wide range, working conditions of small change on bearing pe rformance the impact is not big. (4) most types of bearing can also withstand radial and axial load, axial size smaller. (5) easy to lubrication, maintenance and maintenance.bearing suppliers
Imported bearing also has the following disadvantages: (1) most import bearing radial size large. (2) in high speed and heavy load conditions work, life is short. (3) vibration and noise larger.
1, imported bearing structure: bearing generally is by the inner ring and outer race, rolling element and cage composition. Inner ring into journal (in the thrust bearing of called shaft ring), with a tight, Outer into stand or parts of bearing hole, usually with a loose. Internal and external ring on the raceway, when the internal and external ring relative rotation, rolling element will be along the groove rolling. Rolling element is the realization of rolling friction rolling element, in addition to the "rotation " outside, still around the axis of revolution. Shape is spherical, cylinder, cone column, needle, drum, etc. Cage s role is the rolling body evenly spaced. In order to adapt to some use requirement, some bearing can no inner ring or no outer race, or with dust, seals and other structure. 2, commonly used material: rolling body and internal and external ring material requirement has high hardness and contact fatigue strength, good abrasion resistance and impact toughness. General use chromium alloy steel manufacturing, commonly used materials have GCr15, GCr15SiMn, GCr6, GCr9, etc., the heat treatment of hardness can reach HRC61-65. Cage general use mild steel plate stamping and become, high-speed bearing is used more non-ferrous metal (such as brass) or plastic cage.roller ball bearings