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

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. Rolling bearing of whom had a history of standardization, seriation, general by the outer ring, inner ring, rolling body and adhere to the four local part. Deep groove ball bearings, deep groove ball bearings mainly take radial load can also accept the radial load and axial load. When its only accept radial load, the contact Angle is zero. When deep groove ball bearings with larger radial clearance, with the performance of angular contact bearings, can accept 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, use widely. Suitable for high speed and high speed of operation, and very durable, need not often maintenance. These bearing small friction coefficient, high limit speed, simple structure, form the low, easy to manufacture high accuracy. Way of size range and variety, the application in the fine instrument, low noise motors, automobiles, motorcycles and general machinery and other industries, is the most common type of bearings in machinery industry. Mainly accept radial load, also can accept 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 can be big, mainly take radial load. Roller and ring guard friction small, suitable for high speed rotation. Based on ring presence of rim, can have the 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 axial relative to move, so can be used as a 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 of cylindrical roller bearings, able to accept a certain level of axial load in one direction. Use steel sheet stamping frame, or copper alloy frame system entity adhere to. But there are also a partial use of polyamide forming adhere to. Thrust ball bearing thrust ball bearing and high-speed operation, can accept the design of the thrust load, with the ball rolling by roll gap shape ring gasket. Due to the ring for the seat cushion, thus, thrust ball bearing pad is divided into a flat base and self-aligning spherical seat cushion type two varieties. In addition, this kind of bearing axial load may be accepted, but can't accept radial load. Thrust ball bearing seat, shaft ring and ball stick to three local components. Cooperate with axis of said axial circle, cooperate with shell said seat. Thrust ball bearing is applicable only to accept 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 is separation, can wear &erosive respectively. How to select bearing ( 1) Control the use of machinery installation and bearing conditions, etc. ; ( 2) Know that the request of a 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 device.