What Are Our Concerns About Bearings（47）

Q5:Self-aligning roller bearing inner diameter 260 outer diameter 440 wide 144, what is its model?  

A:Self-aligning roller bearing inner diameter 260mm, outer diameter 440mm, width 144mm.  Its model number is 23152 CAC/W33.  The old model is 3053752.  

It could also be tapered hole self-aligning roller bearings, model number 23152 CACK/W33.  The old model was 3153752.  

Q6:Where are the six types of bearings used?

A:Single row angular contact ball bearing: machine tool spindle, high frequency motor, gas turbine, centrifugal separator, small car front wheel, differential pinion shaft, booster pump, drilling platform, food machinery, dividing head, welding machine, low noise cooling tower, mechanical and electrical equipment, painting equipment, machine tool groove plate, arc welding machine  

Double row angular contact ball bearing, oil pump, roots blower, air compressor, all kinds of transmission, fuel injection pump, printing machinery, planetary reducer, extraction equipment, cycloid reducer, food packaging machinery, electric welding machine, electric, square box, gravity type spray gun, wire stripping machine, axle shaft equipment, chemical machinery, testing analysis.  

Q7:What is the spindle structure?

A:The spindle consists of a non-housing motor, spindle, bearing, spindle unit housing, drive module and cooling device, etc.  The rotor of the motor is integrated with the main shaft by pressing method, and the main shaft is supported by front and rear bearings.  The stator of the motor is mounted in the housing of the spindle unit through a cooling sleeve.  The spindle variable speed is controlled by the spindle drive module, while the temperature rise within the spindle unit is limited by the cooling device.  At the back end of the spindle is equipped with speed and angular displacement sensors, and the inner cone hole and end face of the front end are used to install the cutter.  

Q8:What model is 3201BTNG bearing made in China?

A:Angular contact ball bearing new code 3201 Old code 3056201 inner diameter 12 outer diameter 32 thickness 15.9 belong to six types of bearings  

Q9:What is the bearing type represented by 60210, and what is the inner diameter size?

A:60210 is the old code name of deep groove ball bearing.  The new code name is 6210-Z.  

Inside diameter: 50 mm  

Outer diameter: 90 mm  

Height: 20 mm  

Z: Indicates that one side of the bearing has a metal dust cover and the other side does not.  

Q10:What are the main applications of nine types of bearings?

A：Thrust roller bearing Full load thrust tapered roller bearing: used in rolling mill lowering mechanism.  Example: TTSX000 bidirectional double row thrust tapered roller bearing: steel rolling equipment thrust self-alting roller: example: 29248M and 29244M cement equipment  

Q11:Bearing models the fourth from the right are 1, 2, 3, 7, 8, which type are they?  

A:Class 1 is self-aligning ball bearing  

The second type is self-aligning roller bearing and thrust self-aligning roller bearing  

The third type is tapered roller bearings  

Class 7 are angular contact ball bearings  

Class 8 is thrust cylindrical roller bearings  

Q12:What are the advantages of SKF deep groove ball bearings?

A:Features and uses of deep groove ball bearings: deep groove ball bearings have simple structure, convenient use, and are a kind of bearings with large production volume and wide application range. It is mainly used to bear radial load, but also can bear a certain axial load.  When the radial clearance of the bearing is increased, it has the function of angular contact ball bearing and can bear large axial load.  Compared with other bearings of the same size, such bearings have small friction coefficient and high limit speed.  When the speed is high and the thrust ball bearing is not suitable, this kind of bearing can bear the axial load.  

• 1. Open deep groove ball bearing (60000 type) Note: It is mainly used to bear radial load, but also can bear small axial load. The axial displacement of the shaft is limited within the range of axial clearance, allowing the inner ring to tilt relative to the outer ring.  
• 3. Deep groove ball bearing (60000-Zn type) with dustproof cover on one side and sealing groove on the other outer ring  
• 5. Deep groove ball bearing with one dustproof cover (60000-Z) 6. Deep groove ball bearing with two dustproof covers (60000-2Z) Note:  There is a gap between the dustproof cover and the inner ring of the base type deep groove ball bearing. The limit speed is the same as that of the open deep groove ball bearing. The well-sealed bearing is filled with an appropriate amount of lubricant during assembly, and it is not necessary to clean and add lubricant when installing and using.  
• 7. Deep groove ball bearing with sealing ring on one side (60000-RS type, 60000-RZ type) Note: The same base deep groove ball bearing sealing ring and inner ring retaining edge contact type (rear code %/, (./) and non-contact type (.#, (.#), contact sealing effect is good, but the friction resistance is large, the limit speed is low.  
• 8. Deep groove ball bearings with sealing rings on both sides (60000-2RS type, 60000-2RZ type) Note: Non-contact sealing limit speed is the same as open deep groove ball bearings. Bearings should be filled with appropriate amount of lubricant during assembly and installed without cleaning and adding lubricant.  Deep groove ball bearing with flange outer ring with dust cover (F60000-Z)
• 11. Deep groove ball bearing with flange outer ring with dust cover on both sides (F60000-2Z)

Q13:Where is linear ball bearing used?

A:Structure and application of linear ball bearing  

The structure of the linear ball bearing is provided with a retainer in the outer ring, which is equipped with a plurality of steel balls and moves in an infinite cycle.  The two ends of the retainer are fixed within the spring retainer ring, and a notched window is provided in the linear track where each steel ball works under force.  This part is to make rolling contact between the loaded steel ball and the shaft.  With very low friction coefficient relative movement, so linear motion ball bearings for mechanical equipment, automation equipment, energy saving equipment and other suitable bearings.  Linear motion bearings are now more and more widely used in electronics, machinery, instruments, robots, tool machinery, food machinery, packaging machinery, medical machinery, printing machinery, textile machinery, CNC machine tools, automobiles and other general or special machinery industries.  

Advantages of using linear ball bearings:

•  1.  Because flow contact can minimize the starting friction resistance and dynamic friction resistance, energy can be saved and higher speed can be obtained easily.  
• 2.  The load increases, but the friction coefficient has no sensitive change, so under heavy load, the friction coefficient is very small, and keep the accuracy unchanged for a long time, so that the service life of the machine can be maintained for a long time.  
• 3.  Linear bearing has the advantages of good interchangeability, convenient installation and time-saving, novel mechanical structure, small size and light weight.  
• 4.  Save oil feeding procedures to simplify lubrication and maintenance.  
• 5. Bearings with additional oil seals on both sides are also suitable for places where dust is more or foreign bodies are easy to invade.