GGB HPM cylindrical bearings are Self-lubricating filament wound bushings for hydropower applications

GGB HPM Cylindrical bushes

HPM Fiber Reinforced Composite Hydro Bearings

CHARACTERISTICS

  • Designed for hydropower applications
  • High load capacity
  • Excellent shock and edge loading capacity
  • Low friction, superior wear rate and bearing life
  • Excellent corrosion resistance
  • Dimensionally stable - very low water absorption, low swelling
  • Environmentally friendly

availability

Bearing forms made to order: cylindrical bushes with non-standard dimensions, customized bearing designs

STRUCTURE AND COMPOSITION

Fiber and Epoxy Resin Composite Material 

Continuous wound PTFE and high-strength fibers encapsulated in an internally lubricated, high temperature filled epoxy resin sliding layer + continuous wound fiberglass encapsulated in a high temperature epoxy resin

MICROSECTION

 

 

Sliding layer

 

 

 

Backing

 

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

GAR-FIL / HPF

Grease lubricated

DX / DX10

Process fluid lubricated

GAR-FIL / HPF

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

Dynamic

N/mm2

N/mm2

210

140

Operating temperature

Min

Max

°C

°C

- 195

160

Dry      
Maximum sliding speed, U   m/s

0.13

Maximum pU factor

 

N/mm2 x m/s

1.23

Coefficient of friction    

0.03 - 0.12 *

Recommendations      
Shaft surface roughness, Ra

 

µm

0.2 - 0.8

Shaft surface hardness

Normal

For longer service life

HB

HB

> 180

> 480

* Depending on operating conditions

STRUCTURE AND COMPOSITION

Fiber and Epoxy Resin Composite Material 

Continuous wound PTFE and high-strength fibers encapsulated in an internally lubricated, high temperature filled epoxy resin sliding layer + continuous wound fiberglass encapsulated in a high temperature epoxy resin

MICROSECTION

 

 

Sliding layer

 

 

 

Backing

 

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

GAR-FIL / HPF

Grease lubricated

DX / DX10

Process fluid lubricated

GAR-FIL / HPF

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

Dynamic

psi

psi

30 000

20 000

Operating temperature

Min

Max

°F

°F

- 320

320

DRY      
Maximum sliding speed, U   fpm

25

Maximum pU factor

 

psi x fpm

35 000

Coefficient of friction    

0.03 - 0.12 *

GREASE LUBRICATED      
Coefficient of friction  

 

0.03 - 0.12 *

RECOMMENDATIONS      
Shaft surface roughness, Ra

 

µin

8 - 32

Shaft surface hardness

Normal

For longer service life

HB

HB

> 180

> 480

* Depending on operating conditions 

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