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.‍

miniature ball bearings Self-lubricating spherical plain bearings

(2) GE ... CS-2Z type: outer ring of the bearing steel, sintered bronze sliding surface for composite materials; inner ring of hardened bearing steel, hard chrome plated slide; both sides with a dust cover. Able to withstand the same load direction, the radial load at the same time able to withstand the smaller axial load in either direction.

(3) GEEW ... T-type: the Flange Slewing Bearing‍ outer ring of the bearing steel, the sliding surface is a layer of Teflon fabric; inner ring of hardened bearing steel, hard chrome plated slide. Able to withstand the same load direction, the radial load, and can withstand the smaller axial load in either direction.

(4) GE ... F type: outer ring of hardened bearing steel, PTFE sliding surface for glass fiber reinforced plastics additives, inner ring of hardened bearing steel, hard chrome plated slide. Can withstand the constant moderate radial loads.

(5) GE ... F2 type: glass fiber reinforced plastic outer sliding surface of PTFE as additives in glass fiber reinforced plastics; inner ring of Slewing drives‍ miniature ball bearings steel, hard chrome plated slide. Can withstand the constant moderate radial loads.

(6) GE ... FSA-type outer ring of carbon steel, sliding surface as additives by PTFE glass fiber reinforced plastic wafer composed of fixed and fixed to the outer ring; inner ring of hardened bearing steel. For large and extra large bearings. Can withstand large radial loads.

(7) GE ... FIH outer ring of hardened bearing steel; inner ring of steel, sliding surface as additives by PTFE glass fiber reinforced plastic wafer composed of fixed and fixed to the inner ring; double half the outer ring. For large and extra large bearings. Can withstand large radial loads.                                                                                                  Self-lubricating angular bearing‍ contact bearings

GAC ... F-type outer ring of hardened bearing steel; sliding surfaces with Teflon additive for glass fiber reinforced plastics; inner ring of hardened bearing steel, hard chrome plated slide. Can withstand the radial load and an axial direction (joint) load.

Self-lubricating thrust bearings

GX ... F-type seat for hardened bearing steel, PTFE sliding surface as an additive for glass fiber reinforced plastic, shaft ring of hardened bearing steel, hard worm gear speed reducer‍ chrome plated slide. Can withstand axial load in one direction or the combined load (this time from the radial load value not greater than 0.5 times the axial load value).                                                     

flanged ball bearing Self-lubricating rod ends

(1) SI ... C type is CE ... C-type bearings and rod end assembly. Rod ends with female thread, material is carbon steel. Able to withstand the same load direction. In the radial load at the same time able to withstand either direction is less than or equal to 0.2 times the axial load radial loads.

(2) SA ... C type is CE ... C-type Single Row Ball Slewing Bearing‍ bearings and rod end assembly. Rod ends with male thread, material is carbon steel. Able to withstand the same load direction. In the radial load at the same time able to withstand either direction is less than or equal to 0.2 times the axial load radial loads.

(3) SI ... CS-2Z type is GE ... assembly CS-2Z bearing and rod ends. Rod ends with female thread, material is carbon steel. In the radial load at the same time able to withstand either direction is less than or equal to 0.2 times the axial load radial loads.

(4) SA ... CS-2Z type is GE ... slewing bearing‍ assembly CS-2Z flanged ball bearing  and rod ends. Rod ends with male thread, material is carbon steel. Able to withstand the same load direction. In the radial load at the same time able to withstand either direction is less than or equal to 0.2 times the axial load radial loads.

(5) SIB ... C-type rod ends with female thread, material is carbon steel, sintered bronze sliding surface for composite materials; inner ring of hardened bearing steel, hard chrome plated slide. Can withstand the constant radial load.

(6) SAB ... C-type rod ends with male thread, material is carbon steel, sintered bronze sliding surface for composite materials; inner ring of hardened bearing steel, hard chrome plated slide. Can withstand the constant radial load.

(7) SIB ... F-type rod ends with female thread, material is carbon steel, the sliding surface of PTFE as additives in glass fiber reinforced plastics; inner ring of hardened bearing steel, hard chrome plated slide . Can withstand the constant radial load.

(8) SAB ... F-type rod ends with male thread, thin wall bearings‍ material is carbon steel, PTFE sliding surface with glass fiber reinforced plastic additives; inner ring of hardened bearing steel, hard chrome plated sliding surface. Can withstand the constant radial load.

(9) SQ ... L-type made ​​of special alloy self-lubricating materials, can withstand any smaller radial load and axial load in one direction.‍

high speed bearing Bearing ferrule to production?

1, forging: forging process if the overburnt, overheating, split carbide network will reduce the toughness and strength of ring. So we must strictly control the processing temperature, cyclic heating and cooling after forging conditions (such as spray cooling), especially the larger varieties of high speed bearing‍ ring forging, the temperature over 700 ℃, shall not be piled up display.

2, the heat treatment of heat treatment equipment: close monitoring is an important work in the workshop.

The reliability of monitoring equipment. Must close monitoring of the instrument, thermocouple, temperature control equipment to ensure that important, accurate and reliable measurement data error; to exceed the standard must be promptly replaced, is strictly prohibited to stop the Slewing drives‍ operation.

3, monitoring of grinding process. The finished SUNTHAI bearing ring does not allow to have the existence of grinding burn and grinding cracks, especially with the surface modification of the inner taper no burns. The ferrule if pickling full inspection should be carried out after burn, out products, severe burns can not repair or rework unqualified should be scrapped, does not allow the grinding burn the ferrule into the assembly process.

4, identity management, to the ferrule grinding steel Deep groove ball bearing‍ warehousing, the process must be in strict management, strict distinction between GCR15 and GCR15SIMN two different materials and products.                                             

miniature ball bearings Rolling causes sound generated and maintenance of bearings

Bearing raceway acoustic raceway and its control method is when the operation, the rolling element rolling and making a slippery continuous sound in the raceway surface, is a basic sound unique all bearings are the. Bearings generally sound is rolling road sound with other sounds. The miniature ball bearings‍ bearing seat more rigid, roller acoustic sound pressure level is low. Such as the radial clearance is too small, raceway acoustic sound pressure level and frequency with reduced radial clearance and increased dramatically.

Bearing fatigue failure is a failure surface form, mainly for fatigue crack initiation, propagation and fracture process, long-term effects under the alternating load failures arising under the metal.

1 reasons: low method, whole camshaft bearing accuracy: the provisions bearing accuracy class.

2, reason: the Needle Roller Bearing‍ shaft bending or holes are not concentric method: repair of spindle box

3, reason: the belt too tight: adjust the belt tightness appropriate.

4, reason: poor lubrication method: select the stipulated lubricating material and appropriate cleaning.

5 reasons: low quality, assembly method: improve the assembly quality.

6, reason: shell run method bearing: the replacement of bearings and related components and wear

7, the axial force is too large: cleaning, adjusting seal clearance requirements between 0.2 ~ 0.3mm, correct the impeller balance hole diameter and check static balance value

Method 8: replacement of bearings, bearing damage.

Control of raceway acoustic methods are: the thin wall bearings‍ selection of bearing low noise bearings which waviness small, carefully select the use conditions. Rolling road sound often affects the entire mechanical noise, reduce the raceway can reduce the noise of the whole machine.                                                                                                                     

flanged ball bearing the bearing dust

Use of the bearing noise caused by improper solutions

To solve the dust caused by noise method bearing: cleaning method can improve the bearing, bearing, shaft in the device, hole as well as the matching parts flanged ball bearing‍ all stern Qing Shen clean; two Su light slip foreign agent within three to improve the bearing; seal; four avoid the use of information is not pure or embedded foreign body plastic stick frame.

2, bearing a scar.

To solve the scar caused by the noise of the method of bearing: a device not knocking bearing, the bearing and shaft assembly after loading to avoid bearing installed cable bearing seat; avoided shock vibration bearing corrosion and transport two inventory; three using the high viscosity of grease.

3, in case of improper bearing lubricant

To solve the lubricant due to improper noise method: improper Full complement cylindrical roller bearings‍ bearing lubricant can be divided into three classes: the wrong lubricant; two lubricant lack; three lubricant aging induration. To choose the appropriate lubricant, lubricant according to the lubrication to add, to regularly replace the lubricant.                                            

high speed bearing Axial bearing

The machine is in operation, the general spindle or drive shaft temperature higher than the adjacent parts of the temperature, so the shaft will heat up elongation. In order to keep the shaft to rotate flexibly, in supporting structure design, while meeting the axial positioning accuracy requirements, but also consider the axial heat free expansion requirements. Axial positioning and axial expansion way is the corresponding.

Adjustment of the bearing high speed bearing‍ clearance is to control the running accuracy of the shaft. The axial position adjusting shaft is in order to meet the specific requirements of some of the gear transmission. For example: in the worm, worm axis must fall in the middle plane worm gear to ensure the correct engagement, so the worm shaft can adjust its position in the axial direction. The bevel gear drive, pitch cone cone vertex two bevel gear must coincide, which required two bevel gear shaft can be axially adjusted.

Ring chain electric hoist dustproof and waterproof

Electric chain hoist Thin section bearings‍ is also called electric chain hoist, hoist is one of the indispensable tool of crane.

Electric hoist chain types are: imported electric chain hoist, super low electric chain hoist, chain electric hoist lifting weight is 0.5t~10t. Electric chain hoist chain is equipped with a chain, the chain electric hoist looks neat appearance, anti rust oil is also equipped with a belt, so as not to use electric chain hoist chain in the chain bag, to prevent rusting of the chain. To extend the service life of the electric hoist.

Ring chain electric hoist is firm and durable, waterproof and dustproof performance is good, the compact forming a small aluminum. But electric chain hoist equipment in order to ensure the safety and Triple row roller slewing bearing‍ own the development of the friction clutch and the upper and lower limit switches, the use of simple and convenient. Electric hoist is also provided with a leakage protection devices and overload protection device, if the maximum gravity is lifting more than electric hoist can bear, electric hoist will automatically cut off power, to avoid the accident which occurs due to overload, not causing harm to use.                           

miniature ball bearings Bearing selection issues to consider

In the choice of the general bearing support to those problems? You can try the following four steps to consider:

How to define the axis position, including radial and axial position is the first thing to consider. General axis adopts double support structure, the radial position of the shaft joint is defined by the two support, centripetal or angular contact bearing supports radial location of each Ying Youqi effect. miniature ball bearings‍ Axial displacement axial displacement axial position may be composed of two supporting the limit in one direction can be limited in two directions by a bearing, in general, the axial positioning in different ways can get different running accuracy. Therefore, the design of supporting structure should be based on the axis of the operation accuracy and working conditions, practical scheme of axial positioning.

At the same time bear radial load and axial load case, supporting often use mounting angular contact bearings and tapered roller bearings are. Angular contact bearings installed in pairs arranged in one of three ways. Two bearing outer ring width end relative installation called back-to-back mounting method. The two support force on bearing span beyond. This arrangement for supporting span large, good steel shaft cantilever, axial thermal elongation, the outer ring is disengaged from the inner trend, so the shaft without jamming, so widely used. Double Row Ball Slewing Bearing‍ But if the pre installed in the shaft when heated, pre tension will be reduced. Two bearing outer ring narrow end relative installation called face to face mounting. The force point two support falls on the supporting span. This arrangement has the advantages of simple structure, installation, debugging convenient and therefore are more widely used, mainly for short axis and the temperature rise is not high, but it should be noted that we must have a spare clearance. The axial clearance also shoulds not be too big, will reduce the running accuracy of the shaft. When the axial load is larger, the need for multiple bearings and bearing, the bearing outer ring worm gear speed reducer‍ width is often used, narrow face relative installation series. Effect of the bearing force are located on the same side of the bearing are arranged in the same direction is also called series. The arrangement of this to the attention of the structure and manufacture to ensure each bearing can be as much as possible uniform load.                                                                                                        

flanged ball bearing Classification, bearing

Basics - bearing classification / composed / selection / installation

Sliding bearing: contact (numerous points of contact); suitable for very high speed, very low (load); shaft is suspended, the oil is very important.

Rolling bearings: ball bearing: flanged ball bearing‍ point contact: light load speed;

Classification, bearing

Sliding bearing: contact (numerous points of contact); suitable for very high speed, very low (load); shaft is suspended, the oil is very important.

Rolling bearings: ball bearing: point contact: light load speed;

Roller bearings: linear contact: heavy-duty high-speed;

Two, bearing

The outer ring, inner ring, slewing bearing‍ rolling body cage,: bearing retainer

Cage effect:

1, to prevent direct contact between the rolling body to reduce friction and heat generation;

2, the rolling body guide;

3, to provide lubrication space;

In 4, install or Uninstall can avoid a rolling body powder.

Three, the role of bearing

1, to support the shaft and parts on the shaft, to keep the rotating precision of shaft;

2, to reduce friction during rotation and wear;

Four, bearing selection principle

1, ball bearings than the limit speed of roller bearing high, priority should be given to the selection of ball bearing;

2, at high speed to the selection of bearing, ultra light, super light and light series (inner diameter and outer diameter, the smaller, the rolling body is light and small, Liner Motion Bearings‍ centrifugal inertial force is small);

3, cage materials has a great influence on bearing speed, solid cage than stamping cage to allow higher speed;

The speed limit is 4, thrust bearing is very low, when working at high speed, if the axial load is not very big, can use the angular contact ball bearings to bear pure axial force;

5, if the speed exceeds the bearing sample, can be used to improve the tolerance level, increasing the clearance, the circulating cooling method.

Rolling installation and disassembling bearing

Assembling and disassembling bearing, to pay special attention to the following two points:

1, do not allow the rolling body force, so as not to make the raceway and rolling body damage.

2, because the bearing with a tight, assembly and disassembly should use special tools.                                                              ‍

LYHY flanged ball bearing crossed roller bearing properties

the surface roughness effects of corrosion resistance of bearing parts. The rough surface, easy to make the corrosive gas or liquid through the table

The micro valley into the metal inner layer, causing the surface

Corrosion.

5, the surface roughness of the flanged ball bearing‍ sealing performance of bearing. Joint cannot be closely between the rough surface, gas or liquid.

Through the gap leakage between the contact surfaces of the.

6, the surface roughness of bearing parts of the contact stiffness. The contact stiffness is parts with surface under the action of external force, resistance

The ability to contact Other bearing‍ deformation. The machine stiffness in the very great degree

Depending on the components of the contact stiffness between.

Measurement accuracy of 7, effects of cross roller. Parts of the measured surface and a tool for measuring surface roughness will directly

Affect the precision of measurement, especially in precision measurement.

In addition, the surface roughness of the parts of the reali slim bearings‍ coating, thermal conductivity and contact resistance, reflection and radiation performance, liquid

The surface current resistance, conductor and the gas flow distribution etc.

Will have different degrees of influence.                                                                                                                                       ‍

high speed bearing Surface roughness analysis

Surface roughness analysis effect of crossed roller bearing properties

Effect of surface roughness on the performance of cross roller bearings parts is mainly manifested in the following aspects:

1, the surface roughness affect the high speed bearing‍ wear resistance of parts. The surface is rough, with the effective contact area between the surface pressure is smaller, faster, and wear.

2, the surface Double Row Ball Slewing Bearing‍ roughness effects of cross roller bearing ring with the properties of stability. The clearance fit, the surface of the more

Rough, more easy to wear, so the work process of intermediate gap gradually

Increased; the interference fit, the assembly will micro convex peak crowded flat, reduces the effective interference, reduce the

The strength of the bond.

3, the surface roughness of fatigue strength of Thin section bearings‍ bearing parts. There is a big trough surface roughness of parts, they are like sharp

Angular notch and crack, the stress concentration is very sensitive,

Thus affecting the fatigue strength of parts.‍