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Norplex BR70 Bearing Laminate

OVERVIEW of Norplex BR70 Bearing Laminate

Norplex BR70 Bearing Laminate consists of multiple plies of heavy-weight canvas cloth saturated with phenolic resin system modified with alumina, which adds hardness to the bearing to reduce wear. The pre-preg (b-stage) plies are then laminated under heat and pressure to produce a thermoset composite material. Similar in construction to BR30, this product is colored red for easier inspection of bearing surfaces. BR70 laminates offer load-bearing capacities equivalent to those of brass and bronze, but will not seize to metal shafts, speeding up bearing replacement and reducing equipment downtime. Compared to thermoplastics, BR70 provides superior load-bearing properties and has a Coefficient of Thermal Expansion that more closely matches the CTEs of metal shafts. BR70 is used to make water-cooled propeller stave bearings on ships. In addition, steel and aluminum rolling mills prefer BR70 bearings to metal and thermoplastic bearings because they last longer in many applications and can be replaced quickly during overhauls.

FEATURES AND BENEFITS of Norplex BR70 Bearing Laminate

Norplex BR70 is a red colored composite made from a 24 oz/sq. yd canvas which is passed through the treater twice to insure impregnation of the fibers and to obtain the resin content desired for optimal performance. The resin system is a phenolic with good impregnation qualities and cured hardness. BR70 is designed for highly loaded bearing applications, where the lubrication is provided by oil, water or a mixture.
(NORPLEX BR70) Norplex BR70 Bearing Laminate
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