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DP4®

Metal-Polymer Low Friction Plain Bearings
GGB DP4 antifriction curved with groove design
GGB DP4 Antifriction metal-polymer flange bearing with lead-free material
GGB DP4 Antifriction thrust washer in metal-polymer
GGB DP4 antifriction plain bearings in metal-polymer composite material
GGB DP4 antifriction segment bearings with cross grooves

Product's benefits

  • Material allows for simple assembly
    Simple assembly
  • Material helps reduce total system cost
    Reduced System Cost
  • Materials reduces size and weight
    Reduce size/weight
  • Materials offer quiet operation
    Quiet Operation
  • Material eliminates/reduces maintenance
    Maintenance Free Operation
  • Material performs well under lubricated operation
    Lubricated operation
  • Material operates well in corrosive environments
    Eliminate corrosion
  • Material provides dimensional stability
    Dimensional Stability

Characteristics

  • DP4 low friction bushings offer good wear and low friction performance over a wide range of loads, speeds and temperatures in dry running conditions
  • Very good performance in lubricated applications
  • Good performance in greased applications
  • Suitable for linear, oscillating and rotating movements
  • Lead-free material compliant to ELV, WEEE, and RoHS specifications
  • Approved to standard DIN EN 1797: 2002-02 and ISO 21010: 2004-04 (Cryogenic Vessels – Gas/Material Compatibility) for piping, valves, fittings and other components in both gaseous and liquid oxygen for up to maximum temperature of 60°C and oxygen pressure of 25 bars. Contact GGB for further details.
  • Approved to standard FAR 25.853 and FAR 25.855 - Federal Aviation Regulations – making it suitable for interior aircraft applications 
 
AVAILABILITY

Bearing forms available in standard dimensions

  • Cylindrical bushes
  • Flanged bushes
  • Sliding plates
  • Thrust washers
  • Flanged washers

Metric bearings and imperial bushings made to order: Standard bushing forms in special sizes, half-bushings, stamped/deep drawn shapes, bearings with locating notches, lubricant holes and grooves, customized designs

Operating performance

Choose the product I want to compare
DP4®
Dry Operation Good
Lubricated Operation Very Good
Greased Operation Good
Machinable Consult with Applications Engineer
RoHS Compliant Compliant
Standard Sizes Available
Application Excellence
DU®
Very Good
Good
Fair
Consult with Applications Engineer
Not compliant
Available
DP10
Good
Good
Fair
Consult with Applications Engineer
Compliant
Not Available
DP11
Very Good
Good
Fair
Consult with Applications Engineer
Compliant
Not Available
DP31
Fair
Very Good
Fair
Consult with Applications Engineer
Compliant
Not Available

Composition

  • Metal-Polymer Composite Bushing Material
  • Steel back + Porous  Bronze Sinter +
  • PTFE + Fillers

Technical specifications

  • General

    BEARING PROPERTIES Value Unit
    Maximum load, p
    - Static 250 36,000 N/mm2 psi
    - Dynamic 140 20,000 N/mm2 psi
    Operating Temperature
    - Min -200 -328 °C °F
    - Max 280 536 °C °F
    Coefficient of thermal Expansion
    - Parallel to the surface 6 11 10-⁶/F 10-⁶/K
    - Normal to the surface 17 30 10-⁶/F 10-⁶/K
    Dry
    Maximum sliding speed, U 2.5 500 fpm m/s
    Maximum pU factor 1.0 29,000 psi x fpm N/mm² x m/s
    Coefficient of friction, f 0.04 - 0.25* 0.04 - 0.25*
    Oil Lubricated
    Maximum sliding speed, U 5.0 1,000 fpm m/s
    Maximum pU factor 10.0 286,000 psi x fpm N/mm² x m/s
    Coefficient of friction, f 0.02 - 0.08 0.02 - 0.08
    Recommendations
    Shaft surface roughness, Ra
    - Dry 0.3 - 0.5 12 - 20 μin μm
    - Lubricated ≤ 0.05 - 0.40* ≤ 2 - 16* μm μin
    Shaft surface hardness
    - Unhardened acceptable, improved bearing life > 200 > 200 HB HB
    For Superior Performance Value
    Water Lubricated DP4-B
    * Depending on operating conditions

Client Testimonials

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