Atlas Copco CT 20

The advanced feed system of the Christensen CT20 Surface core drilling rig for deep hole drilling optimizes production. The Christensen CT20 is equipped with a Tier 3 engine, oil spill plates and noise-reducing engine canopy. The CT20 design includes such safety features as emergency stop buttons, a safety guard with inter-lock, and safety fence. The newly designed control panel has many automated functions that make the rig very easy to operate.

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Mast and feed frame

Christensen masts are exceedingly robust, carrying the full weight of the drillstring with capacity to spare. The integrated feed frame is 1.8 or 3.5 m long. With the possibility of using rods up to 6 / 9 m in length, high productive rod tripping is achieved. All rigs are equiped with a easy to use rod positioner.

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Rod holder

Placed at the base of the feed frame, the rod holder uses the latest in gas spring technology. A gas cartridge ensures high clamping force while the machine’s hydraulics open the holder. This safety measure means the rod is always clamped in place when the drilling rig is shutdown. This extremely reliable holder has a seal life of 1 000 000 cycles and is easily serviced or replaced. For extra safety, the gas pressure can be monitored from the rig’s control panel. Furthermore, as it features fewer parts than competing systems, you’re looking at a lot less maintenance.

Features & benefits

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Ergonomic, user-friendly control panel makes the rig easy to operate

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Advanced feed system optimizes productivityed.

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Sound reduction canopy creates a better work environment

Technical Specifications

Depth capacity	2450 m
Product series	Christensen
Height	3564 mm
Width	2500 mm
Length	11606 mm
Weight	18000 kg
Rod pull length	9 m
Max torque	8150 Nm
Max speed	1300 rpm
Drill Rod Size	B-P
Main Hoist	178 kN
Hole diameter	48 – 122 mm
Spindle diameter	124 mm
Max inner diameter of rotation unit chuck	124 mm
Feed length	3.5 m