GGB DP11 Low-friction metal-polymer composite plain bearing

GGB DP11 Cylindrical bushes

DP11 Metal-Polymer Anti-Friction Plain Bearings

CHARACTERISTICS

  • Very good wear and anti friction performance over a wide range of loads, speeds and temperatures in dry running conditions
  • Particularly suited to dry applications with high frequency and low amplitude oscillating movements
  • Suitable for linear, oscillating and rotating movements
  • Lead-free material compliant to EVL, WEEE, and RoHS specifications
  • Approved to standard FMVSS 302 - Federal Motor Vehicle Safety Standard concerning the flammability of materials used in the occupant compartments of motor vehicles

availability

Bearing forms made to order: cylindrical bushes, flanged bushes, thrust washers, flanged thrust washers, sliding plates, half-bearings, special shapes obtained by stamping or deep drawing, customized bearing designs

STRUCTURE AND COMPOSITION

  • Metal-Polymer Composite Material 
  • Steel Back + Porous  Bronze Sinter +
  • PTFE + Solid Lubricant + Fillers

MICROSECTION

Sliding layer PTFE
+ Solid Lubricant + Filler

 

Porous Bronze Sinter

Steel Backing

 

OPERATING PERFORMANCE
Dry Very Good
Oil lubricated Good
Grease lubricated Fair
Water lubricated Not recommended
Process fluid lubricated Fair
FOR Superior performance
Grease lubricated DP4 / DX
Water lubricated DP4-B
Process fluid lubricated DP4 / DP31

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

Dynamic

N/mm2

N/mm2

250

140

Operating temperature

Min

Max

°C

°C

- 200

280

Coefficient of linear thermal expansion

Parallel to the surface

10-6/K

11

Normal to the surface 10-6/K 30
Dry      
Maximum sliding speed, U   m/s

2.5

Maximum pU factor

 

N/mm2 x m/s

1.0

Coefficient of friction,    

0.04 - 0.25 *

OIL LUBRICATED      
Maximum sliding speed, U   m/s

5.0

Maximum pU factor   N/mm2 x m/s

10.0

Coefficient of friction    

0.02 - 0.08

RecommEndationS      
Shaft surface roughness, Ra

Dry

µm

0.3 - 0.5

Shaft surface hardness Unhardened acceptable, improved bearing life > 200HB  

* Depending on operating conditions

STRUCTURE AND COMPOSITION

  • Metal-Polymer Composite Material 
  • Steel Back + Porous  Bronze Sinter +
  • PTFE + Solid Lubricant + Fillers

MICROSECTION

 

Sliding layer

PTFE + Solid Lubricant + Filler

 

Porous Bronze Sinter

Steel Backing

 

OPERATING PERFORMANCE
Dry Very Good
Oil lubricated Good
Grease lubricated Fair
Water lubricated Not recommended
Process fluid lubricated Fair
FOR SUPERIOR PERFORMANCE
Grease lubricated DP4 / DX
Water lubricated DP4-B
Process fluid lubricated DP4 / DP31

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

Dynamic

psi

psi

36 000

20 000

Operating temperature

Min

Max

°F

°F

- 328

536

Coefficient of linear thermal expansion

Parallel to the surface

10-6/F

6

Normal to the surface 10-6/F 17
DRY      
Maximum sliding speed, U   fpm

500

Maximum pU factor

 

psi x fpm

29 000

Coefficient of friction    

0.04 - 0.25 *

OIL LUBRICATED      
Maximum sliding speed, U   fpm

1 000

Maximum pU factor   psi x fpm

286 000

Coefficient of friction    

0.02 - 0.08

RECOMMENDATIONS      

Shaft surface roughness, Ra

Dry

Lubricated

µin

µin 

12 - 20

≤ 2 - 16 *

Shaft surface hardness Unhardened acceptable, improved bearing life > 200HB  

* Depending on operating conditions 

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