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DP4-B

Metal-Polymer Bronze Backed PTFE Plain Bearing
GGB Bronzed backed DP4-B special bush with grooves and notches
DP4-B Plain bearing for maintenance-free operations, with bronze backing
GGB DP4-B Maintenance-free flange washer
GGB DP4-B Plain bearing maintenance free bush with groove
Metal-Polymer Bronze Backed PTFE Plain Bearing

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

 

  • 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
  • Bronze back offers improved corrosion resistance in humid/saline environments
  • Lead-free material compliant to ELV, WEEE, and RoHS specifications
 
AVAILABILITY

Bearing forms available in standard dimensions

  • Cylindrical bushes
  • Flanged bushes
  • Sliding plates

Bearing forms made to order: standard forms in special dimensions, thrust washers, flanged thrust washers, half-bearings, special shapes obtained by stamping or deep drawing, bearings with locating notches, lubricant holes and machined/stamped grooves

Operating performance

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

Composition

  • Metal-Polymer Composite Material
  • Bronze Back + Porous Bronze Sinter +
  • 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 -200 -328 °C °F
    - Max 280 536 °C °F
    Coefficient of Linear Thermal Expansion
    - Parallel to the surface 18 10 10-⁶/K 10-⁶/F
    - Normal to the surface 36 20 10-⁶/K 10-⁶/F
    Dry
    Maximum sliding speed, U 2.5 500 m/s fpm
    Maximum pU factor 1.0 29,000 N/mm² x m/s psi x fpm
    Coefficient of friction, f 0.04-0.25* 0.04-0.25*
    Oil Lubricated
    Maximum sliding speed, U 5.0 1 000 m/s fpm
    Maximum pU factor 10.0 286 000 N/mm² x m/s psi x fpm
    Coefficient of friction, f 0.02 - 0.08 0.02 - 0.08
    Recommendations
    Shaft surface roughness, Ra
    - Dry 0.3 - 0.5 12-20 µm µin
    - Lubricated ≤ 0.05 - 0.4* ≤ 2 - 16* µin µm
    Shaft surface hardness
    - Unhardened acceptable, improved bearing life > 200HB

* Depending on operating conditions

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