GGB-DB Maintenance-free cast bronze bearings with solid lubricant inserts

GGB-DB Cylindrical bushes

GGB-DB™ Cast Bronze Bushings with Solid Lubricant Inserts

CHARACTERISTICS

  • Maintenance-free bearing material for heavy duty applications
  • Excellent performance under high loads and intermittent operation
  • Also available with graphite inserts for temperatures above 250°C

availability

Bearing forms made to order: cylindrical bushes, flanged bushes, thrust washers, sliding plates, pintle bearings, half-bearings, axial and radial segment rings, self-aligning spherical bearings, customized bearing designs

STRUCTURE AND COMPOSITION

Cast Bronze Bearings

with Solid Lubricant Inserts

MICROSECTION

Microsection of GGB DB cast bronze plain bearings

1. Sliding layer with running-in-film

2. Solid lubricant inserts

3. Bronze

OPERATING PERFORMANCE
Dry Good
Oil lubricated Good
Grease lubricated Good
Water lubricated Good
Process fluid lubricated Fair

Nothing changes except the name of the GGB bearing material: to better fight against counterfeiting, GGB has changed DB into GGB-DB™. 

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

Dynamic

N/mm2

N/mm2

200

100

Operating temperature

Min

Max

°C

°C

- 50

350

 

Dry      
Maximum sliding speed, U   m/s

0.5

Maximum pU factor

 

N/mm2 x m/s

1.5

Coefficient of friction    

0.05 - 0.18

 

RecommEndationS      
Surface roughness, Ra

 

µm

0.2 - 0.8

Surface hardness   HB

> 200

 

 

STRUCTURE AND COMPOSITION

Cast Bronze Bearings

with Solid Lubricant Inserts

MICROSECTION

Microsection of GGB DB cast bronze plain bearings

1. Sliding layer with running-in-film

2. Solid lubricant inserts

3. Bronze

OPERATING PERFORMANCE
Dry Good
Oil lubricated Good
Grease lubricated Good
Water lubricated Good
Process fluid lubricated Fair

Nothing changes except the name of the GGB bearing material: to better fight against counterfeiting, GGB has changed DB into GGB-DB™.

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

Dynamic

psi

psi

29 000

15 000

Operating temperature

Min

Max

°F

°F

- 60

660

 

DRY      
Maximum sliding speed, U   fpm

100

Maximum pU factor

 

psi x fpm

43 000

Coefficient of friction    

0.05 - 0.18

 

RECOMMENDATIONS      
Surface roughness, Ra

 

µin

8 - 32

Surface hardness   HB

> 200

 
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