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VMS-DP Brake

14 November 2016

Gold MIne in Nevada

Parking brakes for gold mine hoist offers rapid stopping speeds

Twiflex, a member of the Altra Industrial Motion Group, a leading global supplier of power transmission components, has provided a parking and emergency brake for use on hoists at a gold mine in Elko County, Nevada. The VCSD-VR brakes are installed on a motor pinion, operating on a 1.168 metre diameter disc to produce a total torque of 128 kNm.

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17 October 2016

Twiflex Heavy-Duty Caliper Brakes

Heavy-Duty Altra Caliper Brakes Provide Superior Performance on Grinding Mills at Mines Worldwide

In the last five years, grinding units have increased considerably in capacity, resulting in a trend toward fewer comminution machines per grinding line. Today, 40 ft. diameter SAG mills and 30 ft. diameter ball mills, both with motor powers of more than 22 MW, are commonplace as mine operators look for even larger equipment to achieve greater economy of scale.

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29 January 2015

Copper Gold Mine SAG and Ball Mills

Twiflex VKSD-FL & VMS-DP Brakes for Copper/Gold Mine SAG and Ball Mills

Twiflex Ltd./Hilliard Corp. (USA) has supplied multiple braking systems to Metso Minerals Industries, Inc. for their Mount Milligan mine, located in North Central British Columbia, Canada. The open pit mining operation will provide mill feed at a nominal rate of 60,000 t/d (21.9 Mt/a). Annual mine production will average 81 m lb/year copper and 194,000 oz/year gold in concentrates.

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25 September 2014

Twiflex VMS-FL Brake

Effective (Ore) Liberation

Twiflex, which is part of the Heavy-Duty Overrunning Clutch and Brake division of Altra Industrial Motion, supplies braking systems for both geared and gearless grinding mills. Twiflex told IM that their main focus over the last 12 months has been the development of a large mono spring (floating) spring applied, hydraulic release disc brake for the dual pinion direct drive geared mills.

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24 October 2011

SAG Mill

Mining Mill Braking Technologies

Since the early 1990’s grinding mills have become larger to offer greater economy of scale with increased throughput. It is not unusual to find SAG mills up to 40 feet in diameter and Ball mills of 26 feet. Motor power is ever increasing with current designs producing upwards of 20MW.

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