GGB EP22 high performance engineered plastic cylindrical bushings

GGB EP22 Cylindrical bushes

EP™22 Self-Lubricating Engineered Plastic Bushings

CHARACTERISTICS

  • Good bushing performance in dry working conditions.
  • Very good bushing performance in lubricated or marginally lubricated applications
  • Corrosion resistant in humid/saline environments
  • Very good price performance ratio
  • Very good weight performance ratio
  • Within injection moulding tool feasibility unlimited dimensions and design features
  • Compliant to EVL, WEEE and RoHS specifications

availability

Bearing forms available in standard dimensions
  • Plain cylindrical bushes
  • Plain flanged bushes
EP22 Bearing forms made to order: standard forms in special dimensions, thrust washers, half-bearings, sliding plates, customized bearing designs

STRUCTURE AND COMPOSITION

Engineered Plastic Bushing Material 

PBT + Solid Lubricant

MICROSECTION

 

 

 

PBT +

Solid Lubricant

OPERATING PERFORMANCE
Dry Very Good
Oil lubricated Good
Grease lubricated Good
Water lubricated Very Good
Process fluid lubricated Good after resistance testing

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

N/mm2

50

Operating temperature

Min

Max

°C

°C

- 50

170

Coefficient of linear thermal expansion   10-6/K

90

Dry      
Maximum sliding speed, U   m/s

1.0

Maximum pU factor

for AH/AC  =  5

for AH/AC  = 10

for AH/AC  = 20

N/mm2 x m/s

N/mm2 x m/s

N/mm2 x m/s

0.05

0.10

0.20

Coefficient of friction, f    

0.22 - 0.37

RecommEndations      
Surface roughness, Ra

 

µm

0.1 - 0.5

Surface hardness   HV

> 200

STRUCTURE AND COMPOSITION

Engineered Plastic Bushing Material

PBT + Solid Lubricant

MICROSECTION

 

 

 

PBT +

Solid Lubricant

OPERATING PERFORMANCE
Dry Very Good
Oil lubricated Good
Grease lubricated Good
Water lubricated Very Good
Process fluid lubricated Good after resistance testing

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

psi

7 000

Operating temperature

Min

Max

°F

°F

- 60

340

Coefficient of linear thermal expansion   10-6/F

50

DRY      
Maximum sliding speed, U   fpm

200

Maximum pU factor

for AH/AC  =  5

for AH/AC  = 10

for AH/AC  = 20

psi x fpm

psi x fpm

psi x fpm

1 400

2 800

5 700

Coefficient of friction, f  

0.22 - 0.37

RECOMMENDATIONS      
Surface roughness, Ra

 

μin

4 - 20

Surface hardness   HV

> 200

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