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DP31

Metal-Polymer Hydrodynamic Composite Bearings
DP31 lead-free special bearings in metal-polymer
GGB DP31 Lead-free flange bearing in metal-polymer composite material
GGB DP31 Lead-free special cylindrical bearing in metal-polymer composite material
GGB DP31 Lead-free flanged washer in metal-polymer composite material
GGB DP31 Lead-free sliding plates in metal-polymer composite material

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 offers good wear resistance
    Increased Wear Resistance
  • Material provides dimensional stability
    Dimensional Stability

Characteristics

  • Excellent low friction and wear resistance performance in lubricated applications
  • Excellent flow erosion and cavitation resistance
  • Very good fatigue strength
  • Lead-free material compliant to ELV, WEEE, and RoHS specifications
 
AVAILABILITY

Bearing forms made to order: cylindrical bushes, flanged bushes, thrust washers, flanged thrust washers, sliding plates, half-bearings, bearings with locating notches, lubricant holes and machined/stamped grooves, customized bearing designs

Brochure
GGB DP31 - Metal-Polymer - Hydrodynamic Plain Bearings for Lubricated Applications
Datasheet
GGB DP31 - Metal-Polymer Composite Bearing Material

Operating performance

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DP31
Dry Operation Fair
Lubricated Operation Very Good
Greased Operation Fair
Machinable Consult with Applications Engineer
RoHS Compliant Compliant
Standard Sizes Not Available
Application Excellence
DU®
Very Good
Good
Fair
Consult with Applications Engineer
Not compliant
Available
DP4®
Good
Very Good
Good
Consult with Applications Engineer
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

Composition

  • Metal-Polymer Composite Material 
  • Steel Back + Porous  Bronze Sinter +
  • PTFE + Fluoropolymer + 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 linear thermal expansion
    - Parallel to the surface 11 6 10-⁶/K 10-⁶/F
    - Normal to the surface 30 17 10-⁶/K 10-⁶/F
    Oil Lubricated
    Maximum sliding speed, U 10.0 2 000 m/s fpm
    Maximum pU factor 10.0 286 000 N/mm² x m/s psi x fpm
    Coefficient of friction, f 0.01 - 0.05 0.01 - 0.05
    Recommendations
    Shaft surface roughness, Ra
    - Lubricated ≤ 0.05 - 0.4 * ≤ 2 - 16 * µm µin
    Shaft surface hardness
    - Unhardened acceptable, improved bearing life > 200HB
    For Superior Performance Value
    Dry DP4 / DP11
    Grease lubricated DP4 / DX
    Water Lubricated DP4-B
    * Depending on operating conditions

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