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Slewing bearing is a kind of special structure and can bear axial load, radial load and overturning comprehensive load in the large bearing.
In general, slewing bearings with mounting holes, oil holes and sealing device, to meet the different needs of various kinds of working conditions the host; on the other hand, {TodayHot} turntable bearing itself has the characteristics of compact structure, easy installation and convenient guide rotation, easy maintenance and so on, are widely used for hoisting and conveying machinery, metallurgical machinery, mining machinery, construction machinery, port machinery and automatic assembly line and other large rotating device.
RS turntable bearing according to the different forms of the structure can be divided into four point contact ball slewing bearing, double row reducing ball slewing bearing, crossed cylindrical roller slewing bearing and three row cylindrical roller slewing bearings of different structure forms; the all kinds of bearing according to whether with teeth, tooth location can be divided into without gear, external gear and the internal gear.
The slewing bearing can meet the host various load conditions {HotTag} requirements according to the structure characteristics of different. Among them, four point contact ball slewing bearing has higher load capacity, cross cylindrical roller slewing bearings with static load capacity is higher, three row cylindrical roller slewing bearings due to the increased carrying capacity to the bearing height direction, various loads separately by different raceway and roller bearing, so the stress under the same conditions, the diameter of bearings can be greatly reduced, thus can make the host more compact structure, is a kind of slewing bearings with high bearing capacity.
Turntable bearing code representation
A, the code
Bearing code by the basic code and post code.
Two, the basic code
The basic code is divided into three parts, the structure type and transmission type code, central for the rolling body diameter (more than two rows of bearing rolling body is the biggest roller diameter), the rear element center circle diameter (more than two rows of bearing rolling body is the largest diameter rolling circle)
1, structure code as specified in table 1.
01 four point contact ball bearing 02 rows of different diameter ball bearing 11 cross cylindrical roller bearings 13 and three row cylindrical roller bearing
The provisions of the 2, drive type code in table 2.
0 no gear 1 involute cylindrical gear outer teeth small modulus involute cylindrical gear tooth 2 large modulus involute gear tooth 3 small modulus involute gear tooth 4 large modulus 3 basic code compilation rules the basic code layout, structure type codes and transmission pattern code run between the front, middle and rear, with "." separated.