Bearing the things, is to let you more understand bearing! - bearing knowledge

Bearing is an important component of the modern machinery. Its main function is to support the mechanical rotator, reduce the coefficient of friction in the process of the movement, and guarantee its rotation accuracy. By the frictional properties of motion elements, bearing can be divided into two categories, the rolling bearing and sliding bearing. That is commonly used in rolling bearing is deep groove ball bearings, cylindrical roller bearings, thrust ball bearings. The rolling bearing is standardization, seriation, generally by the outer ring, inner ring, rolling body and keep the frame of four parts. Deep groove ball bearings, deep groove ball bearings mainly bear radial load also can bear radial load and axial load at the same time. When its only bear radial load, the contact Angle is zero. When deep groove ball bearings with larger radial clearance, with the performance of angular contact bearings, can withstand large axial load, deep groove ball bearing friction coefficient is small, the limit rotational speed is high. Deep groove ball bearing is the most representative of the rolling bearing, widely used. Suitable for high speed and high speed running, and very durable, need not often maintenance. These bearing small friction coefficient, high limit speed, simple structure, low manufacture cost, easy to achieve high manufacture precision. Size range and variety in form, used in precision instrument, low noise motors, automobiles, motorcycles and general machinery and other industries, is the most widely used type of bearings in machinery industry. Mainly bear radial load, also can withstand a certain amount of axial load. Cylindrical roller bearings cylindrical roller bearings, roller is the centripetal roller bearing cylindrical roller. Cylindrical roller and race for line contact bearing. Load capacity is big, mainly bear radial load. Roller and ring guard friction small, suitable for high speed rotation. May according to the ring presence of guard, NU, NJ, NUP, N, NF, such as single bearing, and NNU, NN etc. Double row bearings. No guard of cylindrical roller bearing inner ring or outer ring, internal ring and outer ring can be to relative axial movement, so can be used as free end bearing. The one side of the inner ring and outer ring with double guard, on the other side of the ring has a single guard cylindrical roller bearing, can withstand a certain degree of axial load in one direction. General use of stamping steel cage, cage or copper alloy car system entities. But there are also part of the use of polyamide forming keep frame. Thrust ball bearing thrust ball bearing using high-speed operation can inherit the design of the thrust load, with the ball rolling by roll gap shape ring gasket. Because the ring of the seat cushion, therefore, thrust ball bearing is divided into a flat base mat type and self-aligning spherical seat cushion type two kinds. In addition, this kind of bearings can withstand axial load, but can't bear radial load. Thrust ball bearing seat, shaft ring and ball cage components of three parts. Cooperate with axis of said axial circle, cooperate with shell said seat. Thrust ball bearing is only applicable to bear a part of the axial load and low speed, such as crane hook, vertical pumps, vertical centrifuge, jack, low speed reducer, etc. The shaft of the bearing ring, race and rolling elements are separated, can wear &erosive respectively. How to select bearing ( 1) Master mechanical and bearing conditions of use, etc. ; ( 2) Clear the requirement of bearing; ( 3) Select the type of bearing; ( 4) Selected bearing configuration way; ( 5) The selected bearing size; ( 6) The selected bearing specifications; ( 7) The selected bearing installation method.