Skip to main content
Image

HI-EX®

Metal-Polymer Hydrodynamic Composite Bearings
GGB HI-EX high-temperature lubricated lead-free half bearings for hydrodynamic applications
GGB HI-EX high-temperature lubricated metal polymer special cylindrical bush for hydrodynamic bearing applications
GGB HI-EX high-temperature lubricated metal polymer thrust washer for hydrodynamic bearing applications
GGB HI-EX high temperature hydrodynamic special bearings
GGB HI-EX lubricated , high temperature Special bush

Product's benefits

  • Product Material resists Chemicals
    Chemical Resistant
  • Material is suitable for continuous sliding, rotating and oscillating movement
    Suitable for Continuous Sliding, Rotating and Oscillating Movement
  • Quality materials you can rely on
    Quality/Reliability
  • Material performs well under lubricated operation
    Lubricated operation
  • Material offers good wear resistance
    Increased Wear Resistance
  • Material helps extend application's service life
    Extended service life
  • Material allows for extended life cycle
    Extended Component Life Cycle
  • Material operates over wide range of temperature
    Temperature Range

Characteristics

  • Marginally lubricated composite bearing material with good wear resistance under thin film conditions
  • Standard bearings supplied with indents for optimum retention and distribution of the lubricant over the sliding layer
  • Available with non-indented overlay for hydrodynamic applications
  • Rated for high temperature use up to 250°C / 480°F
  • Suitable for use with low viscosity fluids
  • Good chemical resistance
  • Lead-free bearing material compliant to ELV, RoHS and WEEE specifications
  • Tested acc. to ASTM E595/ECSS-Q-ST-70-02C - Outgassing properties of materials used in Spacecraft equipment
 
AVAILABILITY

Bearing forms made to order: cylindrical bushes, thrust washers, sliding plates, half-bearings, special shapes obtained by stamping, bearings with locating notches, lubricant holes and machined grooves, customized bearing designs

Brochure
GGB HI-EX - Metal-Polymer - Superior Bushings for Lubricated Applications
Datasheet
GGB HI-EX - Metal-Polymer Composite Bearing Material

Operating performance

Choose the product I want to compare
HI-EX®
Dry Operation Fair
Lubricated Operation Good
Greased Operation Very Good
Machinable Applicable
RoHS Compliant Compliant
Standard Sizes Not Available
Application Excellence
DX®
Poor
Good
Very Good
Applicable
Compliant
Available
DX®10
Fair
Very Good
Very Good
Applicable
Compliant
Not Available
DP4®
Good
Very Good
Good
Consult with Applications Engineer
Compliant
Available
DP31
Fair
Very Good
Fair
Consult with Applications Engineer
Compliant
Not Available

Composition

  • Metal-Polymer Composite Material
  • Steel Back + Porous Bronze Sinter +
  • PEEK + PTFE + Fillers

Technical specifications

  • General

    BEARING PROPERTIES Value Unit
    Maximum load, p
    - Static 140 20,000 N/mm2 psi
    - Dynamic 140 20,000 N/mm2 psi
    Operating Temperature
    - Min -150 -240 °C °F
    - Max 250 480 °C °F
    Coefficient of thermal Expansion
    - Parallel to the surface 11 6 10-⁶/K 10-⁶/F
    - Normal to the surface 29 17 10-⁶/K 10-⁶/F
    Grease Lubricated
    Maximum sliding speed, U 2.5 500 m/s fpm
    Maximum pU factor 2.8 80,000 N/mm² x m/s psi x fpm
    Coefficient of friction, f 0.08-0.12 0.08-0.12
    Oil Lubricated
    Maximum sliding speed, U 10.0 2,000 m/s fpm
    Facteur pU maximal 10.0 286,000 N/mm² x m/s psi x fpm
    Coefficient de friction, f 0.03-0.08 0.03-0.08
    Recommendations
    Shaft surface roughness, Ra ≤ 0.05 – 0.40 * ≤ 2 - 16 * µm µm
    Shaft surface hardness
    - Normal > 200 > 200 HB HB
    - For longer service life > 350 > 350 HB HB
    For Superior Performance Value
    Dry GAR-MAX / HSG / GAR-FIL / MLG

* Depending on operating conditions

Need advice?

Our experts are ready to help you find the right solution for your specific application.