MHS Seals stock high quality glide and self lubricating bushings in a wide variety of materials and in imperial and metric sizes.
Self Lubricating (BU) bushings – SF1 Material
For optimum performance the product can be operated dry without lubricant, or with only a trace of oil or grease. The PTFE/Pb wear surface, 0.01-0.03mm, provides an initial transfer film, which effectively coats the mating surface on the bearing assembly, forming an oxide type solid lubricant film. The sintered bronze interlay, 0.20-0.35mm, provides maximum thermal conductivity away from the bearing surface, also serving as a reservoir for PTFE-lead wear surface. Low-carbon steel backing gives exceptionally high load carrying capacity, excellent heat dissipation. Copper/Tin plating 0.002mm, provides good corrosion resistance.
Dry: Good Performance
Oiled: Good Performance
Greased: Good Performance
Water: Fair Performance
Specifications
Max Load: Static 250 N/mm2; Very Low Speed 140 N/mm2; Rotating Oscillating 60 N/mm2
Max PV Dry Running: Short Term Operation 3.6 N/mm2 .m/s; Continuous Operation 1.8 N/mm2 .m/s
Friction Coefficient: 0.03 ~ 0.20
Temperature Limit: -195°C to +280C
Max Speed: Dry 2 m/s; Hydrodynamic >2 m/sec
Shaft Surface Finish: Ra em = 0.4
Shaft Hardness: HB > 200.
Glide (BX) bushings – SF2 material
Glide bushings exhibit excellent performance properties:
- Good load capacity and wear resistance
- Suitable for linear, oscillating, and rotating movements
- Performs best with high loads and low speeds.
Material: copper plated steel backing, sintered porous bronze, polyoxymethylene (POM)
BX bushings can operate for a very long period of time with only a trace amount of lubricant applied during installation.
Dry: Poor Performance
Oiled: Good Performance
Greased: Very Good Performance
Water: Poor Performance
Process Fluid: Poor Performance
Specifications
Load Capacity: 70N/mm2
Friction: 0.05 – 0.25 µ
Temperature Limit: -40°C to +130°C
PV Limit (dry): 2.8N/mm2.m/s
Speed Limit: 2.5m/s
PV Limit (oil): 22N/mm2.m/s