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HPMB®

High Precision Fiber Reinforced Composite Bearing
GGB HPMB self-lubricating filament wound cylindrical bushings
GGB HPMB self-lubricating high precision fibe reinforced composite bearings

Product's benefits

  • Material is suitable for continuous sliding, rotating and oscillating movement
    Suitable for Continuous Sliding, Rotating and Oscillating Movement
  • Material allows for simple assembly
    Simple assembly
  • Material is resistant to shock loads
    Resistant to Shock Loads
  • Material eliminates/reduces maintenance
    Maintenance Free Operation
  • Material performs well under lubricated operation
    Lubricated operation
  • Material withstands high loads
    High Load Capacity
  • Material helps extend application's service life
    Extended service life
  • Material operates well in dry environment
    Dry operation

Characteristics

  • Machinable inner and outer diameters for superior application precision, circularity and cylindricity tolerances
  • Pre-machined high precision HPMB bearings available for immediate installation
  • High precision through easy single point machining of the bearing liner, on-site prior to installation
  • Superior precision achieved with post-installation (inner diameter tolerance IT7 attainable) single point machining of the bearing liner
  • High load capacity
  • Excellent shock and edge loading capacity
  • Low friction with negligible stick-slip
  • Low wear rate for extended bearing life
  • Excellent corrosion resistance
  • Dimensionally stable - very low water absorption, low swelling
  • Environmentally friendly grease-free operation
  • Tested by Powertech Test to evaluate performance of self-lubricated bushings in wicket gate applications
  • Tested acc. to ASTM E595/ECSS-Q-ST-70-02C - Outgassing properties of materials used in Spacecraft equipment
     
AVAILABILITY

Bearing forms made to order: finished cylindrical bushings, pre-machined cylindrical bushings, flanged cylindrical bushings (subject to design review)

Brochure
GGB FRC Range - Fiber Reinforced Composite Bearings - High Load Self-Lubricating Bearings
Datasheet
GGB HPMB - High Precision Fiber Reinforced Composite Bearing Material

Operating performance

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HPMB®
Dry Operation Very Good
Lubricated Operation Fair
Greased Operation Not Recommended
Machinable Applicable
RoHS Compliant Compliant
Standard Sizes Not-applicable
Application Excellence
HPM
Very Good
Fair
Poor
Applicable
Compliant
Not Available
HSG
Very Good
Fair
Fair
Consult with Applications Engineer
Compliant
Available
GAR-MAX®
Very Good
Fair
Fair
Consult with Applications Engineer
Compliant
Available

Structure & Composition

 

  • Fiber and Epoxy Resin Composite Material 
  • Machinable liner composed of continuously wound PTFE and high-strength self-lubricating fibers and high temperature epoxy resin + continuous wound fiberglass backing encapsulated in a high temperature epoxy resin

 

Technical specifications

  • General

    BEARING PROPERTIES Value Unit
    Maximum load, p
    - Static 210 30 000 N/mm2 psi
    - Dynamic 140 20 000 N/mm2 psi
    Operating Temperature
    - Min -196 -320 °C °F
    - Max 163 325 °C °F
    Coefficient of thermal Expansion
    - Normal to the surface 12.6 7.0 10-⁶/k 10-⁶/F
    Dry
    Maximum sliding speed, U 0.13 25 m/s fpm
    Maximum pU factor 1.23 35,000 N/mm² x m/s psi x fpm
    Coefficient of friction 0.03-0.12* 0.03-0.12* μ
    Recommendations
    Shaft surface roughness, Ra 0.2 - 0.8 8-32 µm µin
    Shaft surface hardness
    - Normal > 180 > 180 HB HB
    - For longer service life > 480 > 480 HB HB
    For Superior Performance Value
    Oil Lubricated GAR-FIL/HPF
    Grease Lubricated DX/DX10
    Process Fluid Lubricated GAR-FIL/HPF
    * Depending on operating conditions

HPMB Precision Fiber Reinforced Composite Bearings | GGB Videos

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