GGB EP43 Cylindrical bushes

EP™43 Self-Lubricating Engineered Plastic Bearings

CHARACTERISTICS

  • Very good bearing performance in dry working conditions
  • Good performance in lubricated or marginally lubricated applications
  • Corrosion resistant in humid/saline environments
  • Very good price performance ratio for high temperature applications
  • 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
Bearing forms made to order: standard forms in special dimensions, thrust washers, half-bearings, sliding plates, customized bearing designs

STRUCTURE AND COMPOSITION

Engineered Plastic Bearing Material

PPS + Solid Lubricant + Fillers

MICROSECTION

 

 

PPS +

Solid Lubricant  +

Fillers

 

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

83

Operating temperature

Min

Max

°C

°C

- 40

240

Coefficient of linear thermal expansion   10-6/K

45

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

0.22

0.90

3.59

Coefficient of friction    

0.11 - 0.20

Recommendations      
Surface roughness, Ra

 

µm

0.2 - 0.8

Surface hardness   HV

> 200

STRUCTURE AND COMPOSITION

Engineered Plastic Bearing Material

PPS + Solid Lubricant + Fillers

MICROSECTION

 

 

PPS +

Solid Lubricant  +

Fillers

 

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

12 000

Operating temperature

Min

Max

°F

°F

- 40

460

Coefficient of linear thermal expansion   10-6/F

25

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

6 200

25 700

102 000

Coefficient of friction, f  

0.11 - 0.20

RECOMMENDATIONS      
Surface roughness, Ra

 

μin

8 - 32

Surface hardness   HV

> 200

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