China 6800 Series Open-Zz-2rsdeep Groove Ball Bearings 684 685 686 687688 689 6800 6801 68026803 6804 6805 68066807 6808 6809 6810 Bearing with Great quality

Product Description

 

Product Description

 

Product details

Product name deep groove ball beairng 
Model : 6000  6200 
Bearing Material: 100% Chrome Steel/GCr15
Cage: Steel Cage
Feature: Long Life
Precision Grade P0 P6 P5 P4 P2 are all available
Advantage Well-equipped technology,perfect detection means,high quality and reasonable price
Service OEM Customized Services
Application Machinery
Design We can also manufacture products according to customers samples or pictures.

 

Single-row deep groove ball bearings                        
  d 10
 mm
                           
      B                            
      r                            
    r                              
    øD   ød Z   Z   ZX RU   RD   RS   RS  
          ZZ   ZZ   ZZX 2RU   2RD   2RS   2RS  
      Open       Shielded     Non-contactsealed Extremelycontact sealedlight Contact sealed    
Boundary dimensions Basic load ratings   LimitingGrease speedslub.    (min Oil lub. -1)     Bearing No.       (Refer.)
  (mm)     (kN)                         Mass
d D B r Cr C0r   OpenZ, ZZ  (RD, 2RD)  (RS, 2RS)   Open Open Shielded Sealed       Open type
      min.       RU, 2RU     Z   ZZ 2RU   2RD 2RS (kg)
10 19 5 0.3 1.7 0.84 37 000 43 000 6800 ZZ   0.005
  22 6 0.3 2.7 1.25 34 000 41 000 6900 ZZ   0.01
  26 8 0.3 4.55 1.95 31 000 19 000 36 000 6000 ZZ 2RU   2RS 0.019
  30 9 0.6 5.1 2.4 24 000 16 000 29 000 6200 ZZ 2RU   2RS 0.032
  35 11 0.6 8.1 3.45 22 000 16 000 27 000 6300 ZZ 2RU   2RS 0.053

Bearing model Bore(mm) O.D(mm) Width (mm) Chamfer Load Rating(N) Maximumspeed(rpm) Weight (Kg)
Dynamic Static Grease Oil
685 5 11 3 5 0.715 0.282 46000 54000 0.0571
686 6 13 3.5 5 1.08 0.44 40000 50000 0.0571
687 7 14 3.5 5 1.17 0.51 39000 49000 0.003
688 8 16 4 5 1.33 0.585 37000 45000 0.004
689 9 17 4 5 1.72 0.82 35000 42000 0.004
6800 10 19 5 5 1.83 0.925 33000 40000 0.005
6800W7 10 19 7 7 1.83 0.925 33000 40000 0.006
6801 12 21 5 5 1.92 1.04 32000 38000 0.006
6802 15 24 5 5 2.08 1.26 28000 32000 0.007
6803 17 26 5 5 2.81 1.72 25000 30000 0.008
6804 20 32 7 0.3 4000 2470 21000 25000 0.018
6805 25 37 7 0.3 4300 2950 18000 21000 0.571
6806 30 42 7 0.3 4700 3650 13000 17000 0.026
6807 35 47 7 0.3 4900 4050 11000 15000 0.571
6808 40 52 7 0.3 5100 4400 9000 13000 0.033
6809 45 58 7 0.3 6400 5650 7000 11000 0.04
6810 50 65.5 7 0.3 6600 6050 10000 12000 0.052
6811 55 72 9 0.3 8800 8100 8500 10000 0.084
6812 60 78 10 0.3 11500 10600 8000 9500 0.106
6813 65 85 10 0.6 12000 11500 7500 8500 0.125
6814 70 90 10 0.6 12100 11900 7000 8000 0.135
6815 75 95 10 0.6 12500 12800 6500 7500 0.145
6816 80 100 10 0.6 12700 13300 6000 7000 0.155
6817 85 110 13 1 19300 19800 550 6500 0.265
6818 90 115 13 1 19000 1700 5300 6200 0.28
6819 95 120 13 1 19300 20500 5000 6000 0.298
6820 100 125 13 1 19600 21200 4600 5500 0.311
6821 105 130 13 1 19900 21900 4500 5500 0.325
6822 110 140 16 1 27300 29400 4200 5100 0.51
6824 120 150 16 1 28300 31500 4000 4800 0.549
6826 130 165 18 1.1 37000 41000 3600 4400 0.79
6828 140 175 18 1.1 38200 44400 3400 4000 0.84
6830 150 190 20 1.1 47500 54500 3100 3500 1.15
6832M 160 200 20 1.1 48400 56900 2900 3400 1.23
6834M 170 215 22 1.1 60000 70500 2600 3000 1.86
6836M 180 225 22 1.1 60500 73000 2400 2900 1.98
6838M 190 240 24 1.5 73000 88000 2200 2600 2.53
6840M 200 250 24 1.5 74000 91000 2100 2500 2.67
6844M 220 270 24 1.5 76500 98000 1900 2400 2.9
6848M 240 300 28 2 98500 127000 1800 2100 4.48
☆We reserve the right to change specifications and other information included in this catalogue without notice.

Product Parameters

Test Report

         
      Test report
 
Bearing part# 6809ZZ dimensions 45*58*7 QTY to be shipped  52000     pcs
/
Batch # / Purchase order #
  Test standard   Sample size  10      pcs
Test items spec (um) actual value
1 2 3 4 5 6 7 8 9 10
    dimensional accuracy 45MM max. 0 -3 -4 -3 -2 -3 -5 -4 -3 -3 -2
    △dmp min. -10 -8 -6 -7 -5 -6 -8 -7 -7 -8 -6
    Vdp   ≤13 5 2 4 3 3 3 3 4 5 4
    Vdmp ≤8 2 3 3 2 3 2 2 3 3 2
    58MM max. 0 -1 -2 -3 -1 -1 -2 -2 -1 -1 -2
  major items △Dmp min. -11 -10 -9 -11 -10 -9 -9 -10 -8 -9 -10
  VDP ≤16 9 7 8 9 8 7 8 7 8 8
All Items VDmp ≤8 3 4 3 4 4 4 3 3 4 4
    1. crack
2. missing or wrong components
3. surface quality
OK OK OK OK OK OK OK OK OK OK OK
    OK OK OK OK OK OK OK OK OK OK OK
      6–23 16 17 15 18 12 15 14 13 15 16
    △Bs upper tolerance 0                    
    lower tolerance -120                    
    VBs ≤20                    
    △Cs upper tolerance 0                    
    lower tolerance -120                    
 

 

VCs ≤20                    
  Free spin OK OK OK OK OK OK OK OK OK OK OK
  minor items inner ring 1. black skin
2. marking
3. corrosion
4. defect
5. gashmark
6. rivet staking quality
  OK OK OK OK OK OK OK OK OK OK OK
  outer ring   OK OK OK OK OK OK OK OK OK OK OK
    rolling
 element
  OK OK OK OK OK OK OK OK OK OK OK
    retainer   OK OK OK OK OK OK OK OK OK OK OK
    Inspected by:         Inspection Date:2571/4/2

Drawing

Application :
ceiling fan, household range, etc
Bearing for Gear Reducer
Bearing for Fitness Equipment
Bearings for Surveillance
Bearing for Mainipulator
Bearing for floor sweeper

Company Profile

HangZhou JPG bearing & Equipment co ltd

Excellent Manufacturer of
Deep Groove Ball Beairngs
*The domentic  Leading numerical control production equipment ensures the accuracy consisitency and stability  of the products .
*Advanced production equipment and high quality tecnician team ensure the quality of bearing products .
*Advanced automation equipment ensure the quality of products while taking into account the production efficiency .
Leading Equipment

JPG Bearingis a comprehensive manufacture and service providers with world’s leading bearing manufacture process and management technique in china. We are selling all kinds of ball and roller bearings products with international standard and technology level of low noise, high load and long life. Welcome to inquiry!
 

Main products

1.Taper roller bearing

2.Deep groove ball bearing

3.cylindrical roller bearing

3.spherical roller bearing

4.linear bearing

5.pillow block bearing

6 OEM all knid of famous brand

7. Non-standard bearing

 

Quality Testing

Rigorous Testing
 

Our Advantages

Perfect precision testing equipment ,fullly meet the requirements of bearing R&D and manufacturing .Strict and rigourour quality inspectors strictly abide by product quality standards and strictly control the whole process of products from test to prodution. 

High -ending tessing equipment ,professional operation technicians and rigorous procrssing procedures an the guarantee of quality

with the unremitting purcuit of perfec products ,the company has established the industry’s top testing laboratory ,sound quality control rules,and a well -trained professional testing team.Every process from raw materials of finished products is sticklty tested  to ensure high quality products. Delivere to the customer .
 

Packaging & Shipping

Packaging:
1. Neutral Package: Plastic Bag + Carton + Pallet;
2. Commercial Package: Plastic Bag + Box + Carton + Pallet;
3. As the clients’ requirement.

Delivery:
1. Less than 1000 pcs , we will send by express. ( Door to Door, Convenient ),
or by air transport. ( Fastest and safest, but expensive )
2. More than 1000pcs , we will send by sea. ( Cheapest, safe )

FAQ

FAQ
1. Can I get some samples? 
A: Yes, sample is available for quality check and market test.
 
2. Can we do our logo or brand on the package?
A: Yes, we can do OEM.
 
3. What’s the delivery time?
A: It usually takes about 10-25 working days for production based on specifications for your order and quantity.
 
 
4. What’s your payment terms?
A: We usually accept T/T or L/C at sight as the main payment 
terms, an d other payment can also be negotiated.
 
5. What’s your warranty terms?A: We offer different warranty time for different components, 
please contact us for details
Payment:

1. Less than 1000 pcs , 100% T/T, Western Union in advance.
2. Between 1000-10000pcs, TT, Western Union, MoneyGram.
3. More than 10000pcs , TT, L/C ,Western Union, MoneyGram.
Dealing Process:

Send us inqry———Quotation———–Confirmation for all information———-Proforma Invoice————-Payment———–Shipping goods and documents.
 

Shipping Cost:

Estimated freight per unit.



To be negotiated

###

Contact Angle: 0
Aligning: Non-Aligning Bearing
Separated: Unseparated

###

Samples:
US$ 1/Piece
1 Piece(Min.Order)

|

Order Sample

###

Customization:

###

Product name deep groove ball beairng 
Model : 6000  6200  6300 6800 6900
Bearing Material: 100% Chrome Steel/GCr15
Cage: Steel Cage
Feature: Long Life
Precision Grade P0 P6 P5 P4 P2 are all available
Advantage Well-equipped technology,perfect detection means,high quality and reasonable price
Service OEM Customized Services
Application Machinery
Design We can also manufacture products according to customers samples or pictures.

###

Single-row deep groove ball bearings                        
  d 10
 mm
                           
      B                            
      r                            
    r                              
    øD   ød Z   Z   ZX RU   RD   RS   RS  
          ZZ   ZZ   ZZX 2RU   2RD   2RS   2RS  
      Open       Shielded     Non-contactsealed Extremelycontact sealedlight Contact sealed    
Boundary dimensions Basic load ratings   LimitingGrease speedslub.    (min Oil lub. -1)     Bearing No.       (Refer.)
  (mm)     (kN)                         Mass
d D B r Cr C0r   OpenZ, ZZ  (RD, 2RD)  (RS, 2RS)   Open Open Shielded Sealed       Open type
      min.       RU, 2RU     Z   ZZ 2RU   2RD 2RS (kg)
10 19 5 0.3 1.7 0.84 37 000 43 000 6800 ZZ   0.005
  22 6 0.3 2.7 1.25 34 000 41 000 6900 ZZ   0.01
  26 8 0.3 4.55 1.95 31 000 19 000 36 000 6000 ZZ 2RU   2RS 0.019
  30 9 0.6 5.1 2.4 24 000 16 000 29 000 6200 ZZ 2RU   2RS 0.032
  35 11 0.6 8.1 3.45 22 000 16 000 27 000 6300 ZZ 2RU   2RS 0.053

###

Bearing model Bore(mm) O.D(mm) Width (mm) Chamfer Load Rating(N) Maximumspeed(rpm) Weight (Kg)
Dynamic Static Grease Oil
685 5 11 3 5 0.715 0.282 46000 54000 0.0024
686 6 13 3.5 5 1.08 0.44 40000 50000 0.0027
687 7 14 3.5 5 1.17 0.51 39000 49000 0.003
688 8 16 4 5 1.33 0.585 37000 45000 0.004
689 9 17 4 5 1.72 0.82 35000 42000 0.004
6800 10 19 5 5 1.83 0.925 33000 40000 0.005
6800W7 10 19 7 7 1.83 0.925 33000 40000 0.006
6801 12 21 5 5 1.92 1.04 32000 38000 0.006
6802 15 24 5 5 2.08 1.26 28000 32000 0.007
6803 17 26 5 5 2.81 1.72 25000 30000 0.008
6804 20 32 7 0.3 4000 2470 21000 25000 0.018
6805 25 37 7 0.3 4300 2950 18000 21000 0.022
6806 30 42 7 0.3 4700 3650 13000 17000 0.026
6807 35 47 7 0.3 4900 4050 11000 15000 0.029
6808 40 52 7 0.3 5100 4400 9000 13000 0.033
6809 45 58 7 0.3 6400 5650 7000 11000 0.04
6810 50 65.5 7 0.3 6600 6050 10000 12000 0.052
6811 55 72 9 0.3 8800 8100 8500 10000 0.084
6812 60 78 10 0.3 11500 10600 8000 9500 0.106
6813 65 85 10 0.6 12000 11500 7500 8500 0.125
6814 70 90 10 0.6 12100 11900 7000 8000 0.135
6815 75 95 10 0.6 12500 12800 6500 7500 0.145
6816 80 100 10 0.6 12700 13300 6000 7000 0.155
6817 85 110 13 1 19300 19800 550 6500 0.265
6818 90 115 13 1 19000 1700 5300 6200 0.28
6819 95 120 13 1 19300 20500 5000 6000 0.298
6820 100 125 13 1 19600 21200 4600 5500 0.311
6821 105 130 13 1 19900 21900 4500 5500 0.325
6822 110 140 16 1 27300 29400 4200 5100 0.51
6824 120 150 16 1 28300 31500 4000 4800 0.549
6826 130 165 18 1.1 37000 41000 3600 4400 0.79
6828 140 175 18 1.1 38200 44400 3400 4000 0.84
6830 150 190 20 1.1 47500 54500 3100 3500 1.15
6832M 160 200 20 1.1 48400 56900 2900 3400 1.23
6834M 170 215 22 1.1 60000 70500 2600 3000 1.86
6836M 180 225 22 1.1 60500 73000 2400 2900 1.98
6838M 190 240 24 1.5 73000 88000 2200 2600 2.53
6840M 200 250 24 1.5 74000 91000 2100 2500 2.67
6844M 220 270 24 1.5 76500 98000 1900 2400 2.9
6848M 240 300 28 2 98500 127000 1800 2100 4.48
We reserve the right to change specifications and other information included in this catalogue without notice.

###

         
      Test report
 
Bearing part# 6809ZZ dimensions 45*58*7 QTY to be shipped  52000     pcs
/
Batch # / Purchase order #
  Test standard   Sample size  10      pcs
Test items spec (um) actual value
1 2 3 4 5 6 7 8 9 10
    dimensional accuracy 45MM max. 0 -3 -4 -3 -2 -3 -5 -4 -3 -3 -2
    △dmp min. -10 -8 -6 -7 -5 -6 -8 -7 -7 -8 -6
    Vdp   ≤13 5 2 4 3 3 3 3 4 5 4
    Vdmp ≤8 2 3 3 2 3 2 2 3 3 2
    58MM max. 0 -1 -2 -3 -1 -1 -2 -2 -1 -1 -2
  major items △Dmp min. -11 -10 -9 -11 -10 -9 -9 -10 -8 -9 -10
  VDP ≤16 9 7 8 9 8 7 8 7 8 8
All Items VDmp ≤8 3 4 3 4 4 4 3 3 4 4
    1. crack
2. missing or wrong components
3. surface quality
OK OK OK OK OK OK OK OK OK OK OK
    OK OK OK OK OK OK OK OK OK OK OK
      6–23 16 17 15 18 12 15 14 13 15 16
    △Bs upper tolerance 0                    
    lower tolerance -120                    
    VBs ≤20                    
    △Cs upper tolerance 0                    
    lower tolerance -120                    
 

 

VCs ≤20                    
  Free spin OK OK OK OK OK OK OK OK OK OK OK
  minor items inner ring 1. black skin
2. marking
3. corrosion
4. defect
5. gashmark
6. rivet staking quality
  OK OK OK OK OK OK OK OK OK OK OK
  outer ring   OK OK OK OK OK OK OK OK OK OK OK
    rolling
 element
  OK OK OK OK OK OK OK OK OK OK OK
    retainer   OK OK OK OK OK OK OK OK OK OK OK
    Inspected by:         Inspection Date:2020/4/2
Shipping Cost:

Estimated freight per unit.



To be negotiated

###

Contact Angle: 0
Aligning: Non-Aligning Bearing
Separated: Unseparated

###

Samples:
US$ 1/Piece
1 Piece(Min.Order)

|

Order Sample

###

Customization:

###

Product name deep groove ball beairng 
Model : 6000  6200  6300 6800 6900
Bearing Material: 100% Chrome Steel/GCr15
Cage: Steel Cage
Feature: Long Life
Precision Grade P0 P6 P5 P4 P2 are all available
Advantage Well-equipped technology,perfect detection means,high quality and reasonable price
Service OEM Customized Services
Application Machinery
Design We can also manufacture products according to customers samples or pictures.

###

Single-row deep groove ball bearings                        
  d 10
 mm
                           
      B                            
      r                            
    r                              
    øD   ød Z   Z   ZX RU   RD   RS   RS  
          ZZ   ZZ   ZZX 2RU   2RD   2RS   2RS  
      Open       Shielded     Non-contactsealed Extremelycontact sealedlight Contact sealed    
Boundary dimensions Basic load ratings   LimitingGrease speedslub.    (min Oil lub. -1)     Bearing No.       (Refer.)
  (mm)     (kN)                         Mass
d D B r Cr C0r   OpenZ, ZZ  (RD, 2RD)  (RS, 2RS)   Open Open Shielded Sealed       Open type
      min.       RU, 2RU     Z   ZZ 2RU   2RD 2RS (kg)
10 19 5 0.3 1.7 0.84 37 000 43 000 6800 ZZ   0.005
  22 6 0.3 2.7 1.25 34 000 41 000 6900 ZZ   0.01
  26 8 0.3 4.55 1.95 31 000 19 000 36 000 6000 ZZ 2RU   2RS 0.019
  30 9 0.6 5.1 2.4 24 000 16 000 29 000 6200 ZZ 2RU   2RS 0.032
  35 11 0.6 8.1 3.45 22 000 16 000 27 000 6300 ZZ 2RU   2RS 0.053

###

Bearing model Bore(mm) O.D(mm) Width (mm) Chamfer Load Rating(N) Maximumspeed(rpm) Weight (Kg)
Dynamic Static Grease Oil
685 5 11 3 5 0.715 0.282 46000 54000 0.0024
686 6 13 3.5 5 1.08 0.44 40000 50000 0.0027
687 7 14 3.5 5 1.17 0.51 39000 49000 0.003
688 8 16 4 5 1.33 0.585 37000 45000 0.004
689 9 17 4 5 1.72 0.82 35000 42000 0.004
6800 10 19 5 5 1.83 0.925 33000 40000 0.005
6800W7 10 19 7 7 1.83 0.925 33000 40000 0.006
6801 12 21 5 5 1.92 1.04 32000 38000 0.006
6802 15 24 5 5 2.08 1.26 28000 32000 0.007
6803 17 26 5 5 2.81 1.72 25000 30000 0.008
6804 20 32 7 0.3 4000 2470 21000 25000 0.018
6805 25 37 7 0.3 4300 2950 18000 21000 0.022
6806 30 42 7 0.3 4700 3650 13000 17000 0.026
6807 35 47 7 0.3 4900 4050 11000 15000 0.029
6808 40 52 7 0.3 5100 4400 9000 13000 0.033
6809 45 58 7 0.3 6400 5650 7000 11000 0.04
6810 50 65.5 7 0.3 6600 6050 10000 12000 0.052
6811 55 72 9 0.3 8800 8100 8500 10000 0.084
6812 60 78 10 0.3 11500 10600 8000 9500 0.106
6813 65 85 10 0.6 12000 11500 7500 8500 0.125
6814 70 90 10 0.6 12100 11900 7000 8000 0.135
6815 75 95 10 0.6 12500 12800 6500 7500 0.145
6816 80 100 10 0.6 12700 13300 6000 7000 0.155
6817 85 110 13 1 19300 19800 550 6500 0.265
6818 90 115 13 1 19000 1700 5300 6200 0.28
6819 95 120 13 1 19300 20500 5000 6000 0.298
6820 100 125 13 1 19600 21200 4600 5500 0.311
6821 105 130 13 1 19900 21900 4500 5500 0.325
6822 110 140 16 1 27300 29400 4200 5100 0.51
6824 120 150 16 1 28300 31500 4000 4800 0.549
6826 130 165 18 1.1 37000 41000 3600 4400 0.79
6828 140 175 18 1.1 38200 44400 3400 4000 0.84
6830 150 190 20 1.1 47500 54500 3100 3500 1.15
6832M 160 200 20 1.1 48400 56900 2900 3400 1.23
6834M 170 215 22 1.1 60000 70500 2600 3000 1.86
6836M 180 225 22 1.1 60500 73000 2400 2900 1.98
6838M 190 240 24 1.5 73000 88000 2200 2600 2.53
6840M 200 250 24 1.5 74000 91000 2100 2500 2.67
6844M 220 270 24 1.5 76500 98000 1900 2400 2.9
6848M 240 300 28 2 98500 127000 1800 2100 4.48
We reserve the right to change specifications and other information included in this catalogue without notice.

###

         
      Test report
 
Bearing part# 6809ZZ dimensions 45*58*7 QTY to be shipped  52000     pcs
/
Batch # / Purchase order #
  Test standard   Sample size  10      pcs
Test items spec (um) actual value
1 2 3 4 5 6 7 8 9 10
    dimensional accuracy 45MM max. 0 -3 -4 -3 -2 -3 -5 -4 -3 -3 -2
    △dmp min. -10 -8 -6 -7 -5 -6 -8 -7 -7 -8 -6
    Vdp   ≤13 5 2 4 3 3 3 3 4 5 4
    Vdmp ≤8 2 3 3 2 3 2 2 3 3 2
    58MM max. 0 -1 -2 -3 -1 -1 -2 -2 -1 -1 -2
  major items △Dmp min. -11 -10 -9 -11 -10 -9 -9 -10 -8 -9 -10
  VDP ≤16 9 7 8 9 8 7 8 7 8 8
All Items VDmp ≤8 3 4 3 4 4 4 3 3 4 4
    1. crack
2. missing or wrong components
3. surface quality
OK OK OK OK OK OK OK OK OK OK OK
    OK OK OK OK OK OK OK OK OK OK OK
      6–23 16 17 15 18 12 15 14 13 15 16
    △Bs upper tolerance 0                    
    lower tolerance -120                    
    VBs ≤20                    
    △Cs upper tolerance 0                    
    lower tolerance -120                    
 

 

VCs ≤20                    
  Free spin OK OK OK OK OK OK OK OK OK OK OK
  minor items inner ring 1. black skin
2. marking
3. corrosion
4. defect
5. gashmark
6. rivet staking quality
  OK OK OK OK OK OK OK OK OK OK OK
  outer ring   OK OK OK OK OK OK OK OK OK OK OK
    rolling
 element
  OK OK OK OK OK OK OK OK OK OK OK
    retainer   OK OK OK OK OK OK OK OK OK OK OK
    Inspected by:         Inspection Date:2020/4/2

Choosing the Right Ball Bearing for Your Application

When choosing a Ball Bearing, there are several things to consider. These factors include: the size, lubricant type, presence of corrosive agents, stray electrical currents, and more. It can be challenging to choose the right type, size, and type of ball bearing for your application. You should also carefully calculate the loads to determine the right size. Here are some tips for choosing the right Ball Bearing for your application.

Single-row

The single-row ball bearing is one of the most popular types of bearings. The inner and outer ring are designed with raceway grooves that are shaped slightly larger than the balls. This type of bearing has a low torque and can handle high-speed applications with minimal power loss. The radial dimensions of single-row ball bearings also vary, so it is possible to find one that fits your specific application. Besides the above-mentioned advantages, single-row ball bearings are also available with varying grease levels and are widely applicable to applications where the space is limited.
Single-row ball bearings are also called angular-contact ball bearings. Because of their single-row design, they are not separable and can accommodate a high-speed, heavy-duty application. Single-row angular-contact ball bearings can only handle axial load in one direction, and they must be installed in pairs for pure radial loads. Single-row ball bearings are a popular type of rolling bearings and can be used for a wide range of applications.
bearing

Self-aligning

The self-aligning ball bearing was invented by Sven Wingquist, a plant engineer for a textile company in Sweden. While he was responsible for making production as efficient as possible, he soon realized that the machinery he had in place wasn’t working as efficiently as it could. Although ball bearings are great for reducing friction, they were not flexible enough to compensate for misalignments in the machine.
Self-aligning ball bearings have two rows of balls and a common sphered raceway. The inner ring is curved and combines the two rows of balls into one cage. These bearings can tolerate shaft misalignment and compensate for static angular defects. They can be used in simple woodworking machinery, ventilators, and conveying equipment. They are often the preferred choice for applications where shaft alignment is an issue.

Ceramic

A Ceramic ball bearing is a type of high-performance bearing that is available in both full-ceramic and hybrid forms. The main differences between ceramic and steel ball bearings are their construction, lubrication, and mobility. High-quality ceramic ball bearings are durable, and they are ideal for corrosive and high-temperature applications. The material used to create these bearings helps prevent electrolytic corrosion. They are also ideal for reducing the friction and lubrication requirements.
Ceramic balls are harder and less brittle than steel balls, which gives them a higher degree of rigidity. Ceramics also have a higher hardness, with a hardness of Rc75-80 compared to Rc58-64 for steel balls. Their high compressive strength is approximately 5 to 7 times greater than steel. In addition, they have a very low coefficient of friction, which allows them to spin at higher speeds and with less friction. This increases their lifespan and durability, and decreases the energy needed to turn cranks.

Steel

Unlike traditional bearings, steel balls have a relatively uniform hardness. Carbon steel, for instance, is 2.1% carbon by weight. According to the American Iron and Steel Institute, copper content must be no more than 0.40% and manganese content should not be more than 1.65 g/cm3. After carbonizing, steel balls undergo a process called sizing, which improves their roundness geometry and hardness.
The main differences between steel ball bearings and ceramic ball bearings can be traced to their different materials. Ceramic balls are made from zirconium dioxide or silicon nitride. Silicon nitride is harder than steel and resists shocks. The result is increased speed and longer service life. Polyoxymethylene acetal (PMMA) bearing balls are known for their stiffness, strength, and tolerance, but are not as common as steel ball bearings.

Plastic

The most popular types of plastic ball bearings are made of polypropylene or PTFE. These bearings are used in applications requiring higher chemical resistance. Polypropylene is a structural polymer that offers excellent physical and chemical properties, including excellent resistance to organic solvents and degreasing agents. Its lightweight, low moisture absorption rate, and good heat resistance make it an excellent choice for high-temperature applications. However, plastic bearings are not without their drawbacks, especially when operating at very high temperatures or under heavy loads.
Compared to metal bearings, plastic ball-bearings do not require lubrication. They also are highly corrosion-resistant, making them an excellent choice for wash-down applications. They are also post-, autoclave-, and gamma sterilizable. Many conventional steel ball-bearings cannot handle the high temperatures of food processing or swimming pools. In addition to high temperature applications, plastic ball bearings are resistant to chemicals, including chlorine.
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Glass

Plastic sliding bearings are molded bearings made of engineering plastic. With self-lubricating modification technology, these bearings can be produced by injection molding of plastic beads. They are widely used in various industries such as office equipment, fitness and automotive equipment. In addition to plastic bearings, glass balls are used in a variety of other applications, including medical equipment. Glass ball bearings have excellent corrosion resistance, excellent mechanical properties, and are electrically insulators.
Plastic ball bearings are made of all-plastic races and cages. These bearings are suitable for applications that are exposed to acids and alkalis. Because they are cheaper than glass balls, plastic ball bearings are popular in chemical-exposed environments. Stainless steel balls are also resistant to heat and corrosion. But the main disadvantage of plastic ball bearings is that they are not as strong as glass balls. So, if weight and noise is your main concern, consider using plastic balls instead.

Miniature

The global miniature ball bearing market is expected to reach US$ 2.39 Billion by 2027, at a CAGR of 7.2%. Growth in the region is attributed to technological advancement and government initiatives. Countries such as India and China are attracting FDIs and emphasizing the establishment of a global manufacturing hub. This is boosting the market for miniature ball bearings. The miniscule ball bearings are manufactured in small quantities and are very small.
Some manufacturers produce miniature ball bearings in different materials and designs. Chrome steel is the most popular material for miniature ball bearings because of its high load capacity, low noise properties, and lower cost. But the cost of stainless steel miniature bearings is low, since the amount of steel used is minimal. Stainless steel miniature bearings are the smallest in size. Therefore, you can choose stainless steel mini ball bearings for high-speed applications.

Angular-contact

Angular-contact ball bearings have three components: a cage, inner ring, and balls. Angular-contact ball bearings can support high axial and radial loads. Various design and manufacturing attributes make angular-contact ball bearings suitable for a variety of applications. Some features of this bearing type include a special lubricant, different cage materials, and different coatings.
The size of an angular-contact ball bearing is determined by the design units: outer ring width, axial load, and radial load. Depending on the type of application, an angular-contact ball bearing may be manufactured in double-row, triple-row, or quadruple-row configurations. Angular contact ball bearings can be classified according to their design units, which range from metric to imperial. A higher ABEC number means tighter tolerances. To determine the tolerance equivalent of a particular bearing, consult a standard Angular-contact ball bearing table.
Angular-contact ball bearings feature high and low-shoulder configurations. They have two-dimensional races that accommodate axial and radial loads. They are available in self-retaining units with solid inner and outer rings, and ball and cage assemblies. Cages made of cast and wrought brass are the most popular, but lightweight phenolic cages are also available. The latter is a better choice because it doesn’t absorb oil and has lower rolling friction.
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Materials

When it comes to the construction of a ball bearing, high-quality raw materials are a crucial component. These materials not only affect the overall quality of a ball bearing, but also influence the cost. That’s why you should pay close attention to raw material quality. In addition to that, raw materials should be tested several times before the manufacturing process to ensure quality. Read on for some information about the different types of materials used to make ball bearings.
Steel is the most common material for ball bearings. Most ball bearings contain stainless steel balls, which are remarkably corrosion-resistant. They are also resistant to saltwater and alkalis. However, stainless steel balls are heavier than plastic ones, and they are also magnetic, which may be a drawback in some applications. If you’re looking for a metal-free option, glass balls are the way to go. They’re sturdy, lightweight, and resistant to a wide range of chemicals.

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editor by czh 2022-11-27