GGB DS Self-lubricating plain bearing in metal polymer with sliding layer

GGB DS Cylindrical bushes

DS Metal-Polymer Self-Lubricating Bearings

CHARACTERISTICS

  • Self-lubricating bushings for operation in mixed film lubrication conditions
  • Sliding layer is machinable (ca. 0.4 mm above bronze sinter layer)
  • Resistant to fretting corrosion damage to the shaft under low amplitude oscillating movements
  • Similar in performance to DX® but with lower friction

availability

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

STRUCTURE AND COMPOSITION

  • Metal-Polymer Composite Bushing Material 
  • Steel back + Porous  Bronze Sinter + POM (modified)

MICROSECTION

 

Sliding layer

POM + Fillers
 

Porous Bronze
Sinter

Steel Back

OPERATING PERFORMANCE
Dry Good
Oil lubricated Very Good
Grease lubricated Very Good
Water lubricated Poor
Process fluid lubricated Poor
For superior performance
Water lubricated

HPM / HPF / DP4-B

Process fluid lubricated DP4 / GAR-FIL / HI-EX 

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

Dynamic

N/mm2

N/mm2

110

45

Operating temperature

Min

Max

°C

°C

- 60

130

Dry      
Maximum sliding speed, U   m/s

1.5

Maximum pU factor

 

N/mm2 x m/s

1.4

Coefficient of friction    

0.15 - 0.30

GREASE LUBRICATED      
Maximum sliding speed, U   m/s

2.5

Maximum pU factor

 

N/mm2 x m/s

2.8

Coefficient of friction    

0.05 - 0.10

OIL LUBRICATED      
Maximum sliding speed, U   m/s

10.0

Maximum pU factor   N/mm2 x m/s

10.0

Coefficient of friction    

0.03 - 0.08

RecommEndationS      
Shaft surface roughness, Ra

 

µm

≤ 0.4

Shaft surface hardness

Normal

For longer service life

HB

HB

> 200

> 350

STRUCTURE AND COMPOSITION

  • Metal-Polymer Composite Material 
  • Steel back + Porous  Bronze Sinter + POM (modified)

MICROSECTION

 

Sliding layer

POM + Fillers
 

Porous Bronze
Sinter

Steel Back

OPERATING PERFORMANCE
Dry Good
Oil lubricated Very Good
Grease lubricated Very Good
Water lubricated Poor
Process fluid lubricated Poor
FOR SUPERIOR PERFORMANCE
Water lubricated

HPM / HPF / DP4-B

Process fluid lubricated DP4 / GAR-FIL / HI-EX 

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

Dynamic

psi

psi

16 000

6 500

Operating temperature

Min

Max

°F

°F

- 80

270

DRY      
Maximum sliding speed, U   fpm

300

Maximum pU factor

 

psi x fpm

40 000

Coefficient of friction    

0.15 - 0.30

GREASE LUBRICATED      
Maximum sliding speed, U   fpm

500

Maximum pU factor

 

psi x fpm

80 000

Coefficient of friction    

0.05 - 0.10

OIL LUBRICATED      
Maximum sliding speed, U   m/s

2 000

Maximum pU factor   MPa x m/s

286 000

Coefficient of friction    

0.03 - 0.08

RECOMMENDATIONS      
Shaft surface roughness, Ra

 

µin

≤ 16

Shaft surface hardness

Normal

For longer service life

HB

HB

> 200

> 350

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