Dry DU Bushing PTFE Composite Bearing Oilless Bushing Gear Pump Bush

Dry DU Bushing PTFE Composite Bearing Oilless Bushing Gear Pump Bush
Product Details

Dry DU Bushing PTFE Composite Bearing Oilless Bushing Gear Pump Bush

Product Advantages:

1)Good wear and low friction performance over a wide range of loads, speeds and temperatures in dry running conditions.

2)Very good performance in lubricated applications particularly in marginally lubricated applications.

3)Suitable for linear, oscillating and rotating movements.

4)Lead-free material match RoHS specifications.

AVAILABILITY

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

TRUCTURE AND COMPOSITION

Metal-Polymer Composite Material

Steel Back + Porous  Bronze Sinter +

PTFE + Solid Lubricant

MICROSECTION

microsection of metal-polyer anti-friction plain bearing.png

Sliding layer

PTFE + Solid Lubricant

Porous Bronze Sinter

Steel Backing


OPERATING PERFORMANCE

Dry

Good

Oil lubricated

Good

Grease lubricated

Fair

Water lubricated

Not recommended

Process fluid lubricated

Fair

BEARING PROPERTIES

GENERAL


Unit

Value

Maximum load, p

Static

Dynamic

N/mm2

N/mm2

250

140

Operating temperature

Min

Max

°C

°C

- 200

280

Coefficient of linear thermal expansion

Parallel to the surface

10-6/K

11

Normal to the surface

10-6/K

30

DRY




Maximum sliding speed, U


m/s

2.5

Maximum pU factor


N/mm2 x m/s

1.0

Coefficient of friction



0.03 - 0.25 *

OIL LUBRICATED




Maximum sliding speed, U


m/s

5.0

Maximum pU factor


N/mm2 x m/s

10.0

Coefficient of friction



0.02 - 0.08

RECOMMENDATIONS




Shaft surface roughness, Ra

Dry

Lubricated

µm

µm

0.3 - 0.5

≤ 0.05 - 0.4 *

Shaft surface hardness

Unhardened acceptable, improved bearing life > 200HB



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