GGB EP self-lubricating engineered plastic plain bearings

GGB EP Cylindrical bushes

EP™ Self-Lubricating Engineered Plastic Bearings

CHARACTERISTICS

  • Good bearing performance in dry working conditions
  • Good bearing 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
Bearing forms made to order: standard forms in special dimensions, thrust washers, half-bearings, sliding plates, customized bearing designs

STRUCTURE AND COMPOSITION

Thermoplastic compound material 

PA6.6T + Solid Lubricant + Fillers

MICROSECTION

microsection of EP solid-polymer plain bearing

 

 

PA6.6T +

Solid Lubricant  +

Fillers

OPERATING PERFORMANCE
Dry Good
Oil lubricated Good
Grease lubricated Good
Water lubricated Fair
Process fluid lubricated Good after resistance testing
For Superior performance
Water lubricated EP22

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p

Static

Dynamic

N/mm2

N/mm2

80

40

Operating temperature

Min

Max

°C

°C

- 40

140

Coefficient of linear thermal expansion   10-6/K

22

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

0.06

0.24

1.00

Coefficient of friction    

0.15 - 0.30

Recommendations      
Surface roughness, Ra

 

µm

0.2 - 0.8

Surface hardness   HV

> 200

STRUCTURE AND COMPOSITION

Thermoplastic compound material 

PA6.6T + Solid Lubricant + Fillers

MICROSECTION

microsection of EP solid-polymer plain bearing

 

 

 

PA6.6T +

Solid Lubricant  +

Fillers

OPERATING PERFORMANCE
Dry Good
Oil lubricated Good
Grease lubricated Good
Water lubricated Fair
Process fluid lubricated Good after resistance testing
FOR SUPERIOR PERFORMANCE
Water lubricated EP22

BEARING PROPERTIES

GENERAL   Unit Value
Maximum load, p Static psi

12 000

  Dynamic psi 6 000
Operating temperature

Min

Max

°F

°F

- 40

280

Coefficient of linear thermal expansion   10-6/F

12

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

1 700

6 800

28 600

Coefficient of friction, f  

0.15 - 0.30

RECOMMENDATIONS      
Surface roughness, Ra

 

μin

8 - 32

Surface hardness   HV

> 200

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