miniature ball bearings Code of composition

Wheel bearings code representation

Bearing Code by simply code and post code form.

Fundamental component code

Fundamental code is Flange Slewing Bearing‍ divided into three parts, the first part of the code structure types and drive types, central rolling diameter (for more than two rows of rolling element bearings for maximum rolling element diameter), heart weight rear rolling circle diameter (for two rows above the rolling bearing body weight for maximum heart rolling circle diameter)

1, structure type code according to the rules in Table 1.

01 four-point contact high precision bearings‍ ball bearings; 02 double Reducing ball bearings; 11 interspersed cylindrical roller bearings; 13 with three-row cylindrical roller bearings.

2, transmission type code according to the rules in Table 2.

0 Toothless; an outer involute cylindrical gear teeth smaller modulus; 2 involute cylindrical gear outer teeth larger modulus; 3 involute cylindrical gear teeth within a smaller modulus; 4 involute cylindrical gears inner teeth larger modulus.

3, the fundamental rules of the code compiled

Fundamental code layout, the structure ship loader bearing‍ type code and transmission type code writing for the front, middle and rear with between. "" Separated.

flanged ball bearing Magnetic bearing system

Magnetic bearing system is composed of the following five components: controller, rotor, solenoids, sensors and power amplifiers. One of the most critical component is the controller. Controller performance largely determine the performance of the slewing rings‍ magnetic bearing system. Control law controller determines the dynamic performance and stiffness of the magnetic bearing system, damping and stability.

The controller is divided into two kinds: Analog controllers and digital controllers. Compared with the digital controller analog controller has the following disadvantages :( a) adjustment inconvenient; (b) it is difficult to implement complex control; (c) can not simultaneously achieve two or more degrees of freedom control; (d) mutual change is poor, that is, different magnetic bearing controller must have a corresponding; large (five) power consumption, large volume and so on.

Magnetic bearing to be widely used, the difference between analog controller to adjust the performance of online say that it is one of the reasons, Single row crossed roller slewing bearing‍ therefore, the direction is the development trend of digital magnetic bearing. At the same time, to achieve intelligent magnetic bearing systems, analog controller is obviously difficult to meet this requirement. Therefore, to improve the magnetic bearing from the performance, reliability, and enhance the flexibility and reduce the volume controller, power, and in the future to network, intelligent direction angles, the controller must implement digitization. The last three decades has been the rapid development of control theory and made widely used.

Magnetic bearings, is a new high-performance bearings. Compared with conventional ball bearings, plain bearings and oil film bearings, magnetic bearings there is no mechanical contact, the rotor can reach very high operating speed, with a small mechanical wear, low energy consumption, low noise, long life, no lubrication, no oil pollution etc., especially for high-speed, vacuum, clean and Taper roller bearings‍ other special environment. It can be widely used in machining, turbo machinery, aerospace, vacuum technology, rotor dynamics identification and other tests in the field, is recognized as a very promising new bearings.

flanged ball bearing Self-lubricating bearings

Joint bearings are widely used in hydraulic engineering, metal forming machine, construction machinery, automation equipment, automotive shock absorbers, irrigation machinery and other industries. Joint flanged ball bearing‍ joint bearing Introduction and high precision bearings‍ classification is spherical plain bearings, the basic type is composed of a spherical sliding spherical contact surface the inner and outer components. Depending on their structure and types, can withstand radial load, axial load, or radial, axial joint load.

Because spherical plain bearings of sliding contact area, the tilt angle is large, but also because most of the plain bearings taken a special process methods, such inch bearing‍ as surface phosphate, zinc, chrome or outside the sliding surface lining, insert pads, such as spraying, Therefore, greater load capacity and impact resistance, and has anti-corrosion, wear resistance, self-aligning, self-lubricating lubrication good or dirt contamination without lubrication characteristics, even dislocation can be installed to work properly. Therefore, joint bearings are widely used for slower swing motion, tilt and rotation movement.

Composition

Plain Bearings mainly by an outer ring and an inner ring. Taper roller bearings‍ The spherical inner and outer spherical outer ring composed of sliding friction.                                                                                                            

high speed bearing Operating Temperature

Joint bearing allowable operating temperature is mainly determined by the pairing of the sliding surface between the bearing material, especially plastic material self-lubricating sliding surfaces high speed bearing‍ joints, its carrying capacity at high temperatures have Excavator Slewing Bearing‍ decreased. When the sliding surface materials such as lubricating plain bearings pairing of steel / steel, the allowable operating temperature depends on the allowable operating temperature lubricant. But for all lubricated and self-lubricating bearing joints is concerned, may, within -30 ℃ ~ + 80 ℃ temperature range of use, and maintain the correct affordability.

Dip

Rolling bearing joints is much greater than the general inclination is adjustable heart, it is suitable for use in less demanding concentricity supporting parts, plain bearings form bearing structure with the inclination of the size, type, seal and bearing varies, self aligning ball bearing‍ generally Spherical plain bearings tilt range is 3 ° ~ 15 °, inclination range of angular contact bearings are 2 ° ~ 3 °, inclination range of thrust bearings are 6 ° ~ 9 °.

Coordinate

In any case, bearing joints shall be chosen with the occurrence of uneven deformation of the ferrule, with the nature and level of their choice must be determined according to the bearing type, size and other support in the form of working conditions and loads.

Handling

Plain Bearings

Joint bearing handling should follow the principle that the force exerted by the assembly and disassembly can not directly pass through the spherical sliding Taper roller bearings‍ surface. Further, the auxiliary working tools should be used, such as a sleeve, disassembly, etc., the loading force is applied directly to the outside, and uniformly applied to the mating ferrule, auxiliary heating or no-load handling methods.

miniature ball bearings Installation

When assembling the joint bearing series, it is necessary to pay special attention to the location of the outer surface of the split. Consistent with a direct role in order to avoid the cut surfaces, the need to maintain the dividing surface at right angles to the direction of thin wall bearings‍ compliance.

Lubricating

When the applied load and the speed of the swing movement generated by the very hour, to the oil-type spherical plain miniature ball bearings can operate without lubrication conditions. Nevertheless, under normal circumstances have to be jacked up to add grease. Operation during the initial installation, it is recommended lubrication intervals should be moderately reduced.

Circumstances non-oil type joints lubricated bearings can no longer use the following. However, if before the operation adding lithium soap grease, use the Needle Roller Bearing‍ term joint bearing stresses may be more prolonged. If injected into the space around the bearing grease, bearing joints will be more effective protective dust and foreign matter intrusion.                                                                                                                                                        

flanged ball bearing Spherical Plain Bearings

Plain Bearings Classification and Features

(1) GE ... E Type: Single every outer ring, no oil tank. Can withstand the radial load and smaller axial load in either direction.

(2) GE ... ES type: single slit outer ring, with oil tank. Can withstand the radial load and smaller axial load in either direction.

(3) GE ... ES-2RS type, GEEW ... ES-2RS type: single Thrust Ball Bearings‍ slit outer ring, with oil tank, sides with a ring. Can withstand the radial load and smaller axial load in either direction.

(4) GE ... ESN type: single slit outer ring, GE ... XSN type: double-slit outer ring (split outer ring), with oil tank, with snap groove on the outer ring. Can withstand the radial load and smaller axial load in either direction. But by the snap ring axial load to bear, its ability to withstand axial load is reduced.

(5) GE ... HS type: inner ring with oil tank, double half of the outer ring, the wear and tear clearance can be adjusted. Can withstand the radial load and smaller axial load in either direction.

(6) GE ... DE1 type: truck mounted crane bearing‍ inner ring of flanged ball bearing steel, the outer ring of the bearing steel. When the inner assembly extrusion, with oil tank and oil hole. Inside diameter of less than 15mm bearings, no lubrication groove and hole. Can withstand the radial load and smaller axial load in either direction.

(7) GE ... DEM1 type: inner ring of hardened bearing steel, the outer ring of the bearing steel. When assembling extruded inner bearing into the bearing housing, the pressure on the outer ring of the bearing axial end ditch fixed. Can withstand the radial load and smaller axial load in either direction.

(8) GE ... DS type: outer ring fitting groove and lubrication ship loader bearing‍ groove. Limited to large-sized bearing. Can withstand the radial load and any direction of smaller axial load (fitting groove side can not bear axial load).                                                                                                                                                                     

high speed bearing Angular contact bearings

GAC ... S-type inner and outer rings are hardened bearing steel outer ring grooves and hole. Can withstand the radial load and an axial direction (joint) load.

Thrust bearings

GX ... S-type shaft ring and Thin section bearings‍ seat are hardened bearing steel; seat has grooves and hole. Can withstand axial load in one direction or the combined load (radial load value at this time is not greater than 0.5 times the value of the axial load).

Rod ends

(1) SI ... E-type is GE ... E-type high speed bearing‍ and rod end assembly. Rod ends with female thread, material is carbon steel, no oil tank. Able to support radial load and axial load in any one direction is less than or equal to 0.2 times the radial load.

(2) SA ... E-type is GE ... E-type bearings and rod end assembly. Rod ends with male thread, material is carbon steel; no oil tank, can withstand radial load and any direction is less than or equal to 0.2 times the radial load axial load.

(3) SI ... ES type is GE ...  slewing rings ‍ ES type bearings and rod end assembly. Rod ends with female thread, material is carbon steel; slot. Able to support radial load and axial load in any one direction is less than or equal to 0.2 times the radial load.

(4) SA ... ES type is GE ... ES type bearings and rod end assembly. Rod ends with male thread, material is carbon steel; slot. Able to support radial load and axial load in any one direction is less than or equal to 0.2 times the radial load.

(5) SIB ... S-type rod ends with female thread, material is carbon steel; inner ring of hardened bearing steel; slot. Able to support radial load and axial load in any one direction is less than or equal to 0.2 times the radial load.

(6) SAB ... S-type rod ends with male thread, Double Row Ball Slewing Bearing‍ material is carbon steel; inner ring of hardened bearing steel; slot. Able to support radial load and axial load in any one direction is less than or equal to 0.2 times the radial load.

(7) SQ ... type of ball joint rod end bearings, rod ends for carbon steel; ball head for carburizing steel. Can withstand the radial load and smaller axial load in either direction.‍