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DUT - Gear Pump Bushings

SB-BU
Material Specifications
 
SB-DU bushings
Metric Sizes 
 
SB-DU bushings
Inch Sizes
     

 

  SB-DU bushes, PTFE lined, steel backing, self-lubricating dry bearings  

PTFE / Fibre + Bronze + Steel Backing + Copper Plating / Tin-Plating
Sintered PTFE and Bronze on Steel Backing, surface with copper-plating or tin-platin

Features
Suitable for dry running with a low coefficient of friction, low wear rate, good sliding characteristics, the transfer film created will protect the mating metal surface. Suitable for rotary and oscillating movement, high chemical resistance, lower absorption of water and reduced swelling. Also performs well with lubrication.


Structures

1. PTFE/Fibre mixture thickness 0.01~0.03mm, provides an excellent initial transfer film, which effectively coats the mating surfaces of the bearing assembly, forming an oxide type solid lubricant film.
2. Sintered bronze powder thickness 0.20-0.35mm, provides Max. thermal conductivity away from the bearing surface, also serves as a reservoir for the PTFE-Fibre mixture.
3. Low-carbon steel, gives exceptionally high load carrying capacity, excellent heat dissipation.
4. Copper/Tin plating thickness 0.002mm, provides good corrosion resistance.


Technical Data

 Physical and Mechanical Properties

 

 Usage

 Thermal Conductivity λ

40

W/mK

  dry

good

 Maximum Operating Temperature Tmax

280

°C

  oil lubricated

good

 Minimum Operating Temperature Tmin

-200

°C

  grease lubricated

fair

 Compressive Yield Strength σc

350

N/mm2

  water lubricated

fair

 Maximum Static Load Psta,max

250

N/mm2

  process fluid lubricated

fair

 Maximum Dynamic Load Pdyn,max

140

N/mm2

 

 Maximum Sliding Speed V-dry

2.5

m/s

 Maximum PV Factor-dry, continuous operation

1.8

N/mm2 * m/s

 Maximum PV Factor-dry, intermittent operation

3.5

N/mm2 * m/s

 Coefficient of friction f-dry

0.02-0.25

-

 Coefficient of friction f-oil lubricated

0.02-0.12

-

 


Typical Applications

This material meets the demanding criteria for long life and trouble-free performance with or without lubrication.
Automotive: tractors, combines, crop sprayers, earthmovers, graders and other construction, auto machines, specific uses in power steering cylinders, steering gear thrust washers, disc brakes, calipers and pistons, shock absorbers, governor linkage, windshield wiper motor, tilt gear assemblies...
Business machines: photocopy machines, typewriters, mail sorters, postage meter systems, computer terminal printers and peripheral equipment, automatic printing devices, mail processing machinery...
Hydraulics and valves: pumps including gear, rotary, water, axial piston, and other types, ball, butterfly, poppet steam, and other valves and valve trunnions...
Home appliances: tape recorders, refrigerators, air conditioners, cleaners, polishers, sewing machines, ovens, dishwashers, clothes washing machines...And materials handling, marine engine, packaging, textile equipment, tools...etc.


Other Standard SB-DU Shapes

   

 


 SB-DU Bearings & SB-DU bushings (SF-1 series) 

     
0608DU
6x8x8 mm
  1615DU
16x18x10 mm
  1815DU
18x20x15 mm
  3020DU
30x34x20 mm
             
1625DU   2525DU   3030DU  
1625DU
16x18x25 mm
  2525DU
25x28x25 mm
  3030DU
30x34x30 mm
  3240DU
32x36x40 mm
             
4525DU   5030DU   5050DU   5535DU
4525DU
45x50x25 mm
  5030DU
50x55x30 mm
  5050DU
50x55x50 mm
  5535DU
55x60x35 mm
             
5560DU   6040DU   6525DU   7015DU
5560DU
55x60x60 mm
  6040DU
60x65x40 mm
  6525DU
65x70x25 mm
  7015DU
70x75x15 mm
             
7040DU   7060DU   7540DU   7570DU
7040DU
70x75x40 mm
  7060DU
70x75x60 mm
  7540DU
75x80x40 mm
  7570DU
75x80x70 mm
             
8040DU      
8040DU
80x85x40 mm
  9030DU
90x95x30 mm
  9550DU
95x100x50 mm
  11060DU
110x115x60 mm
             
    90100DU   14DU12
26070DU
260x265x70 mm
  30080DU
300x305x80 mm
  90100DU
90x95x100 mm
  14DU12
7/8 x 1 x 0.75 inch
             
     
48DU72
3 x 3-3/16 x 4.5 inch
  1720DU
17x19x20 mm
  2008DU
20x23x8 mm
  2023DU
20x23x23 mm
             
     
2020DU
20x23x20 mm
  3015DU
30x34x15 mm
  25289.5DU
25x28x9.5 mm
  384238DU | Gear Pump Bush
38x42x38 mm
             
     
BB2820DU
28x31xF38x20 mm
  DU rings
 
  BS80DU
81.25x120x85x109.75 mm
  40DU40
2-1/2 x 2-11/16 x 2-1/2 inch
             
     
1220DU
12x14x10 mm
  2020DU
20x23x20 mm
  3025DU
30x34x25 mm
  5050DU
50x55x50 mm
             
           
6535DU
65x70x35 mm
           

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1215DU  1220DU  1225DU  1310DU  1320DU  1405DU  1410DU  1412DU  1415DU  1420DU  1425DU  1510DU  1512DU  1515DU  1520DU  1525DU  1610DU  1612DU  1615DU  1620DU  1625DU  1720DU  1810DU  1815DU  1820DU  1825DU  2010DU  2015DU  2020DU  2025DU  2030DU  2215DU  2220DU  2225DU  2230DU  2415DU  2420DU  2425DU  2430DU  2515DU  2520DU  2525DU  2530DU  2550DU  2815DU  2820DU  2825DU  3010DU  3015DU  3020DU  3025DU  3030DU  3040DU  3220DU  3230DU  3240DU  3520DU  3530DU  3535DU  3540DU  3550DU  3720DU  4020DU  4030DU  4040DU  4050DU  4520DU  4530DU  4540DU  4545DU  4550DU  5020DU  5030DU  5040DU  5050DU  5060DU  5520DU  5525DU  5530DU  5540DU  5550DU  5555DU  5560DU  6020DU  6030DU  6040DU  6050DU  6060DU  6070DU  6530DU  6550DU  6570DU  7040DU  7070DU  7560DU  7580DU  8040DU  8060DU  8080DU  80100DU  8530DU  8560DU  85100DU  9060DU  90100DU  9560DU  95100DU  10050DU  10060DU  100115DU
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