Safety disc brake for large grinding mill TWIFLEX

Twiflex VMS-DP Mill Brake Stand. One of four units supplied to Metso Minerals for use at the Telfer Mine, Australia. The two units combined produce 16Million NM of brake torque!

The VMS-DP Mill Brake brakes will be installed on SAG (semi-autogenous grinding) Mills used for the extraction of copper and gold from virgin rock. Fresh ore is continually conveyed into the mills that are pre-charged with various sizes of steel balls, crushing the rock when the mill rotates. The ore is crushed until small enough to pass through the openings in the discharge grates. The material is then conveyed to a secondary Ball Mill for fine grinding.
The brakes which are used for emer-gency stopping and holding have been designed specifically for this application and will be the largest that Twiflex has ever manufactured. The VMS-DP caliper is approximately the size of an office desk and weighs approximately 2 metric tonnes. Each brake produces 768kN of braking force, 4-6 calipers provide braking to each mill flange.

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