New COP 1432ED Provides Benefits of Double-Dampening to Extension Drilling in Small Holes
Atlas Copco introduced the double-dampening principle in 1991 and for years the technology has been proven to reduce drill steel wear while increasing the drill’s <BR> impact power. This power cost-saving principle has been utilised in all new drill <BR> designs and Atlas Copco now makes it available in the COP 1432ED designed for extension drilling in the hole diameter range of 45 - 64 mm.
compared to a single-dampening rock drill for the same size hole.
The double-dampening system absorbs and dissipates the shock waves reflected from the rock. The energy contained in the shock waves creates heat, which is cooled down in the rig’s hydraulic oil cooler. As the shock waves dissipate, the pressure for the damping piston adjusts to allow the drill bit to be held firmly against the rock so that the string can be re-tightened between each piston impact.
The new COP 1432ED replaces the old technology found in the COP 1032 and other equivalent single-dampening rock drills. The advantages of the COP 1432 ED include doubling the life of the drill steel and a 20 – 30 percent increase in the rate of penetration. Plus, with a length of only 850 m m it is one of the shortest 14 kW rock drills on the market.
The COP 1432ED can also be used as a replacement for more powerful, single-dampening rock drills in a higher class, such as the COP 1238 because the COP 1432ED is more cost-effective on the drill steel. While it was designed for extension drilling in holes from 45 – 64 mm, the COP 1432ED can be used in other ways, for example to drill bolting holes of 33 mm.
The new drill is designed so that the piston’s impact power and frequency can be controlled and adjusted independently of each other. The rotation speed is variable as opposed to fixed speed alternatives which gives the operator unique opportunities to optimise the rock drill’s performance with changing rock conditions.
Designed around a robust and well-proven principle for long life and minimal maintenance, the COP 1432ED has a separate, stainless steel flushing chamber intended to withstand corrosion and high pressure. Additionally, an over pressure of oil blended air is used to keep cuttings from blocking up the machine parts during upwards drilling. With surface drilling, this pressurised air is not necessary and can be turned off.
The machine can be delivered with a shank adapter for drill steel with
threads R28, R32, R38 or T38. Two rotation motors are available to choose between:
1140 Nm with 0 – 220 rpm or 570 Nm with 0 – 380 rpm.
Photo nr: 202452:
The new COP 1432ED is a double dampened rock drill designed for extension drilling in
the hole diameter range 45 –- 64 mm. With a length of only 850 mm it is one of the shortest
14 kW rock drills on the market.
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