Track Roller Bearings There are two pairs of symmetry
Roller bearings
Roller bearings are in two inner raceway and raceway for the spherical outer ring, assembled with drum-shaped roller bearings.
Roller bearings with two rows of rollers, the main bear a load, but also can withstand any direction of the axial load. Has a high radial load capacity, especially for heavy duty or vibration load work, but can not withstand the pure axial load. This type of bearing outer ring raceway is spherical, so its performance is good, can compensate for coaxial error.
Roller bearings have two symmetrical spherical roller, the outer ring has a common spherical roller, the inner ring with two bearing axis tilt angle of the raceway, with good performance, when the shaft bending or installation of different Heart when the bearing can still be used normally, with the bearing size of different series, the general allowable angle of 1 to 2.5 degrees, the type of bearing capacity is greater, in addition to radial load bearing can withstand two-way Of the axial load, with good impact resistance, in general, roller bearings allow the work of the lower speed.
Double row tapered roller bearings Roller bearings are divided into two types: symmetrical spherical roller and asymmetrical spherical roller. The asymmetrical roller bearing is an early product, mainly for the mainframe maintenance service. Design of the host is rarely used when the symmetrical roller bearings, the internal structure of a comprehensive improvement in the design and optimization parameters, compared with the early production of roller bearings, can withstand greater axial load, the bearing operating temperature is low , It can be adapted to the requirements of higher speed, according to the inner ring with or without the use of the cage can be divided into C-type and CA-type two, C-type bearing is characterized by no inner ring and steel plate stamping to maintain Frame, CA-type bearing characteristics are both sides of the inner ring with ribs and the use of vehicle solid cage In order to improve the bearing lubrication, to provide users with outer ring with annular oil groove and three oil hole roller bearings , To bearing post code / W33 said, according to the user's request can also be used with the inner ring oil hole roller bearings, in order to facilitate the customer handling and replacement of bearings, but also provide the hole with a tapered roller bearing, The hole taper is 1:12 After the code-named K said, in order to meet the requirements of special users can also provide the hole taper of 1:30 of the bearing, after the code-named K30 hole with a tapered bearing with a lock nut can be directly mounted on the tapered shaft Neck, but also with the adapter sleeve or withdrawal sleeve will be installed in the cylindrical journal.
Thrust bearings are divided into two parts. Tight ring and shaft sleeve tight, live ring support in the bearing seat. Ferrule and rolling body is usually made of high strength, good wear resistance of the rolling bearing steel manufacturing, quenching surface hardness should reach HRC60 ~ 65. Cage made of soft steel stamping can also be made of copper alloy cloth bakelite or plastic manufacturing.
