GGB Filament Wound Bearings


To meet the need for high load, self lubricating bearings that provide low wear rates in a wide variety of  applications, GGB (Glacier Garlock Bearings, an Enpro Industries Company has developed a comprehensive family of filament wound, composite self-lubricating bearings. These bearings combine the excellent lubricating properties of filled PTFE (Polytetrafluoroethylene) with the high strength and stability of an oriented glass fiber wound structure. GGB’s Filament Wound Bearings employ a tough, high strength composite structure consisting of epoxy-impregnated, wound glass fibers oriented to provide the radial and axial strength required to support high bearing loads. GAR-MAX® and HSG® (High Strength GAR-MAX®) have high strength fibers twisted together and encapsulated by a high temperature resin. GAR-FIL® bearings have a proprietary filled PTFE tape liner bonded to the high strength epoxy backing. Laboratory and field testing has proven that GGB Filament Wound Bearings provide outstanding performance in a wide variety of demanding dry or lubricated bearing applications. These include off-road vehicles, agricultural and automotive equipment, construction equipment, aerial lifts, windmills, packaging equipment and many more. Product availability and additional technical information is available on the GGB website at

Specification Test Value Units
Specific Gravity, 73°F       GAR-MAX / GAR-FIL D792  1.87 / 1.96 Lb/in.3
Tensile Strength @ Yield, 73°F D638 psi
Tensile Modulus of Elasticity, 73°F D638 psi
Tensile Elongation (at break), 73°F D638 %
Flexural Strength, 73°F D790 psi
Flexural Modulus of Elasticity D790 psi
Shear Strength, 73°F D732 psi
Compressive Strength – Ultimate     GAR-MAX / GAR-FIL  60,000 / 55,000 psi
Compressive Strength at 2% Deformation D695 psi
Compressive Strength at 10% Deformation D695 psi
Deformation Under Load %
Compressive Modulus of Elasticity, 73°F D695
Compressive Strength ⊥ to Laminate (Modulus) psi
Compressive Strength ⊥ to Laminate (Yield) psi
Compressive Strength ⊥ to Laminate (Ultimate) psi
Hardness, Durometer (Shore “D” scale) D2240
Hardness, Rockwell (Scale as noted) D785 Rockwell M
Izod Impact, Notched @ 73°F D256 Type A ft.lbs/in. of notch
Coefficient of Friction (Dry vs Steel) Static PTM55007  .2
Coefficient of Friction (Dry vs Steel) Dynamic PTM55007  .15
Maximum Static Bearing Load (P) PTM55007  20,000 psi
Maximum Unlubricated No Load Velocity (V) GAR-MAX/GAR-FIL PTM55007  25 / 500 ft/minute
Maximum Limiting PV (Unlubricated)            GAR-MAX / GAR-FIL PTM55007  30,000 / 35,000 psi x ft/min.
Wear Factor “K” x 10-10 PTM55010 Cubic in.-min/
Sand Wheel Wear/Abrasion Test UHMW=100
Minimum Mating Surface Hardness Rockwell (Brinnell)
Coefficient of Linear Thermal Expansion E-831(TMA) in/in/°F x 10-5
Coefficient of Thermal Expansion Hoop E-831(TMA)  7.0 in/in/°F x 10-5
Coefficient of Thermal Expansion Axial E-831(TMA)  15.0 in/in/°F x 10-5
Softening Point °F
Heat Deflection Temperature 264 psi D648 °F
Embrittlement Temperature °F Min.
Continuous Service Temperature in Air        GAR-MAX / GAR-FIL  325 / 400 °F Max.
Short Term Service Temperature °F Max.
Tg-Glass Transition (Amorphous) D3418 °F
Melting Point (Crystalline Peak) D3418 °F
Thermal Conductivity F433 BTU-in/(hr/ft2°F)
Dielectric Strength Short Term D149 Volts/mil
Volume Resistivity D257 ohm/cm
Surface Resistivity D257 ohm/cm
Dielectric Constant, 106 Hz D150
Dissipation Factor, 106 Hz D150
Flammability @ 3.1mm(1/8 in.) UL94 UL94
Arc Resistance seconds
Water Absorption, Immersion 24 Hours D570 (2)  Nil %
Water Absorption, Immersion Saturation D570 (2)  Nil %
Machinability Rating  N/A 1=easy, 10=difficult
Imperial (U.S.) Size Availability (Off the Shelf) .5 ID to 6 ID inches
Metric Size Availability (Off the Shelf) 12 to 150 mm
Characteristics / Attributes  High Load / Dimensionally Stable / Standard Sizes / Low Cost