DU Oilless Washer

SF-1 is wall wrapped bushing made of triple layer composites material which be consisted of a steel backing, a sintered porous bronze particles interlayer and calendared with PTFE and mixture as surface layer, It is of low friction coefficient, anti-wear, anti-corrosion and can be used without oil, or only a trace of oil if needed. Moreover, it is of low cost, low vibration and low noise, compacted and light, SF-1 is widely applied in various sliding articles of different kind of machines, such as textile machines, tobacoo machines, hydraulic vechicles, antomobiles, agriculture and forests machinese and soon.

►Possible Application:

Automotive:
McPherson struts and shock absorbers, doors, bonnets and tailgate hinges, steering columns, clutches, gearbox selector fork guides, wiper arms, power steering pumps, pedal bushes, ABS equipment, etc.

Industrial:
Aerospace, agricultural equipment, construction equipment, material handling equipment, forming machines-metal, plastic and rubber, office equipment, medical and scientific equipment, packaging equipment, pneumatic and hydraulic cylinders, pumps and motors, railroad and ramways, textile machinery, valves, etc.

►Physical & Mechanical Properties:

Items	Value	Unit
Thermal Conductivity	40	W/mK
Maximum Operating Temperature Tmax	280	°C
Minimum Operating Temperature Tmin	-200	°C
Compressive Yield Strength	350	N/mm2
Maximum Static Load Psta,max	250	N/mm2
Maximum Dynamic Load Pdyn,max	140	N/mm2
Maximum Sliding Speed V-dry	2.5	m/s
Maximum PV Factor-dry, continuous operation	1.8	N/mm2 * m/s
Maximum PV Factor-dry, intermittent operation	3.5	N/mm2 * m/s
Coefficient of friction f-dry	0.02-0.25
Coefficient of friction f-oil lubricated	0.02-0.12

►Usage Range:
 

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