Metal-Polymer Anti-Friction Plain Bearings

Product Detail

Metal-Polymer Anti-Friction Plain Bearings







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 particularly in marginally lubricated applications

• Suitable for linear, oscillating and rotating movements

• 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



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