June 12-14, 2018
GPS 2018
Calgary, Canada
September 04-07, 2018
SMM 2018
Hamburg, Germany
GMR Series Brakes
The operator of a limestone quarry in Florida needed to replace the braking systems on its massive dragline. After years of almost continual service, the original brakes had reached the end of their useful life. The dragline uses various numbers of brakes for the different drive systems that control the machine’s hoist, drag, swing and walking motions.
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Current market conditions in the coal mining sector have put increased pressure on mine operators worldwide. Now, more than ever, mines need to operate at very high levels of productivity to achieve even modest profit targets.
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Twiflex offers the largest range of industrial disc brake calipers in the world. Spring applied units may be retracted pneumatically, hydraulically or electrically (depending on caliper design) while most direct acting brakes have some form of positive retraction device. A key market for the company is mining, including brakes for large dragline motors.
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A major amusement park contacted a Canadian ride contractor to ensure the proper operation of its simulator attraction. The project engineers required a low-maintenance, durable braking solution operating with low noise levels that would not interrupt the riders’ experience.
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Twiflex recently provided GMR-SD caliper brakes for use on a new medium-duty 4,500 ton dragline at a mine in India. The brakes stop the dragline’s load from moving as quickly as possible and bring it to rest in a controlled manner to avoid shocking the drivetrain and machine frame.
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