DP31

Metal Polymer Dry Bearings

DP31

DP31, Dry Bearings, For pump, Steel backing, With lead

DP31 bearings

Metal-polymer-composite material

Steel + porous bronze sinter + PTFE + fluoropolymer + fillers + Pb

Self-lubricating & Maintenance-free

■ Features

1. DP31 Dry Bearings material is excellent wear resistance and low friction performance in lubricated hydraulic applications.
2. DP31 Dry Bearings material is excellent in chemical resistance.
3. DP31 Dry Bearings material is excellent in cavitations and flow erosion resistance.
4. DP31 Dry Bearings material is good fatigue strength.

■ Physical & Mechanical Properties

Items	Value	Unit
Maximum Operating Temperature Tmax	280	°C
Minimum Operating Temperature Tmin	-200	°C
Maximum Static Load Psta,max	250	N/mm2
Maximum Dynamic Load Pdyn,max	140	N/mm2
Maximum Sliding Speed V-oil lubricated	10	m/s
Maximum PV Factor-oil lubricated	10	N/mm2 * m/s
Coefficient of friction f-oil lubricated	0.01-0.05

■ Usage Range

dry	fair
oil lubricated	very good
grease lubricated	fair
water lubricated	fair
process fluid lubricated	good

■ Possible Application

Automotive:
Air conditioning compressors, gearboxes and transmissions, heavy duty struts and shock absorbers, high performance pumps: axial pistons, radial pistons, gears, vanes, etc.

Industrial:
Compressors: scroll and reciprocating; pneumatic and hydraulic cylinders, high performance pumps: axial pistons, radial pistons, gears, vanes, etc.

■ Standard Parts Available

Cylindrical Bush

Flanged Bush

Thrust Washer

Flanged Washer

Strip / Plate

DP31 cylindrical bush