SEP Slide Bearings
Why SEP Slide Bearings?
SEP Slide Bearings are a special formulation PTFE, reinforced with a glass fiber aggregate to provide a structural material that offers significant compressive strength without cold, flow, yet retains the low-friction (.06) and chemically inert characteristics of unfilled PTFE.
25% glass filled PTFE typically offers 2000 times more wear resistance, 250% more creep resistance and 45% more immunity to deformation than unfilled PTFE.
PTFE composition, manufactured into sheets of required thickness, is factory bonded, using precise heat and pressure in hydraulic presses, to specially prepared backing plates or supporting materials such as carbon steel, stainless steel, bridge-bearing neoprene, fabric reinforced rubber pads or other required composition. The resulting combination is cut to required size as simple slide bearings or fabricated into bearing assemblies in combination with anchorage devices, special hardware and elastomeric materials.
PTFE bearing surfaces are weatherproof, able to absorb dirt, grit and other contaminants without noticeable effect on their useful properties and have the longest life of any known bearing surface meeting these needs. They may be used either interior or exterior, under any exposure. PTFE has excellent dielectric properties, thus providing excellent insulation against stray electrical currents and galvanic corrosion.
- To accommodate movement under load with minimal friction.
- To provide release or sliding surfaces at bearing ends of structural members, thereby accommodating shrinkage or thermal motion of members.
- To isolate components or parts of structure or assembly of parts when their relative movements must be independent of each other.
- To provide a release bearing system in order to prevent stresses from entering certain parts of a structure.
- To provide positive seismic separations.
SEP Slide Bearings are a special formulation of PTFE, reinforced with a strong glass aggregate and other reinforcing agents to provide a structural material that offers significant compressive strength without cold creep, yet retains the low friction and chemical inertness of virgin PTFE.
The PTFE composition, molded, sintered, and skived to the required thickness, is factory bonded to specially prepared backing plates, such as carbon steel, stainless steel, or elastomeric-backed plates.
- SEP Slide Bearings are structural PTFE.
- Lowest friction factor of any solid material.
- Chemically inert.
- Able to absorb dirt and grit without increasing the coefficient of friction
- Weatherproof- less than 0.01% moisture absorption
- Able to allow for misalignment
- Provides electrical insulation- no galvanic corrosion
- No stick- slip action
- Easy to install- simply bolt or weld
- Reduced support costs- the low friction factor remains constant
- Only half as much bearing area is needed compared to virgin PTFE
- Takes compressive loads of 75 psi to 2000 psi
- Temperature range of -320 degrees F. to 400 degrees F.
- Shear of the epoxy bond exceeds shear of the material