Metal-polymer composite bearing with POM material (DX bushing)
1.Part name: SF-2 bushing
2.Material:Steel backing + Sintered bronze + PTFE
3.Appearance:Tin or Copper plated
Boundary Lubrication Bushing SF-2 is composed of three layers:
steel backing, sintered bronze layer and modified POM layer. It
fits well for low speed, high load , normal temperature occasions
with rotational , oscillating or frequent stop-start motion. It can
works long time under boundary lubrication circumstances, if oil or
grease is added, its working life can be prolonged further.
SF-2 It made of high quality low carbon steel backing with
sintering porous bronze in the interlayer and rolled POM&PB
compound on the surface. It can offer the good load capacity and
wear-resistant. The product is applied to vehicle chassis, forging
and pressing machine, metallurgical machinery, and hydraulic
industry and rolling steel industry and so on.
SF-2H It made of high quality low carbon steel backing with
sintering porous bronze in the interlayer and rolled POM compound
on the surface. It can offer the good load capacity and
wear-resistant. The product is applied to vehicle chassis, forging
and pressing machine, metallurgical machinery, and hydraulic
industry and rolling steel industry and so on.
SF-2S
SF-2L It made of high quality low carbon steel backing with
sintering porous bronze in the interlayer and rolled POM compound
on the surface. It can offer the good load capacity and
wear-resistant. The product is applied to vehicle chassis, forging
and pressing machine, metallurgical machinery, and hydraulic
industry and rolling steel industry and so on. SF-2L is with blue
PTFE and SF-2S is with orange PTFE.
1. Recommended for applications involving intermittent operation or
boundary lubrication...
2. Automotive: suspension joints, kingpin assemblies and stub axles
of tucks, automobile driving joint hinges, steering and other
linkages, articulation joints, rear chassis hinges, fairleader
rollers...
3. Machine tool building industry: spindles in drill, grinding, and
milling machines, ram guide plates in multiram presses...
4. Agricultural equipment: gearbox, clutch, bale trips and wheel
caster swivels for bale accumulators, front axle pivot bearings,
steering idler box bearings and kingpin bearings for harvesters...
5. Be especially well-suited for applications where lubricant can
not be supplied continuously or repeatedly.
| Technical Data |
| Max. Load | Static | 250N/mm2 |
| Dynamic | 140N/mm2 |
| Oscillating | 60N/mm2 |
| PV limit | Dry | 2.8N/mm2. m/s |
| Oil | 22N/mm2. m/s |
| Temp. limit | -40 ~ +130° C |
| Friction Coeff. | 0.05 ~ 0.25μ |
| Speed limit | 0.25m/s |
| Thermal conductivity | 2.03Kcal/M. br. c |
| Coeff. Of linear expansion | 51— 10-6per° C |
| Initial pre-lubrication at assembly required |
