
Vent holes in casing
Cutting vent holes in casing directly on site.
The Mactech dual mag portable drill cuts holes up to 8 in in diameter on curved and flat ferrous surfaces. Dual rare-earth magnets give 2,200 lb of holding force, and the drill delivers 231 ft-lb of torque on hydraulic or air drive.

The dual mag drill holds on curved and flat ferrous surfaces with two rare-earth magnets rated at 2,200 lb of holding force. A precision slide and bracket assembly positions the drill for large rigging and vent holes in casing, decks and structural steel.
The drill produces 231 ft-lb of torque and cuts holes up to 8 in in diameter. It works with standard bits, hole saws and end mills on a 1 in straight quill, with 8 in of travel.
Hydraulic and pneumatic drives are available. The air-driven version needs 116 cfm for peak performance. Weight with motors is 201 to 213 lb (91 to 97 kg).
The drill is made for field machining where large holes are needed in installed steel.

Cutting vent holes in casing directly on site.

Large rigging holes in structural steel and decks, up to 8 in.

Dual magnets lock onto curved ferrous surfaces such as pipe and casing.
Share the hole sizes, surface shape and power available, and our Machinery team will help you configure the Mactech dual mag portable drill.
Explore other products available within the same product category and open each page for complete technical details.
Split-frame clamshell lathes for spark-free cutting and beveling of pipe from 0.5 in to 16 in OD.
Clamshell lathes for spark-free cutting and beveling of large pipe from 60 in to 110 in OD.
Clamshell lathes for severing, beveling and end preparation of pipe from 10 in to 36 in OD.
Worm-drive clamshell lathes for cutting and beveling heavy-wall pipe from 31 in to 60 in OD.
Guillotine-style diamond wire saws for conductor and casing cuts from 22 in to 60 in, below the mudline.
Compact diamond wire saws for pipe and casing cuts from 4.5 in to 24 in, on land, by divers or by ROV.
Compact diamond wire saws, with ROV versions, for cutting piles and legs from 14 in to 120 in.
On-site facing machine for elliptical and round manway gasket faces from 12 x 16 in to 18 x 24 in.
ID-mounted facing machine for flanges up to 229 in, with rotary milling or single-point tooling.
Portable line boring bars, 1.75 to 8 in, for on-site bore repair from 1-3/8 in up to 96 in.
Portable gantry mills with up to 116 x 54.4 in travel, plus a modular heavy duty version.
3-axis linear rail mills, MT4, MT6 and MT8, with beds from 24 in to 120 in for on-site machining.
Vertical portable boring mills, MT4, MT6 and MT8, for boring and stud removal on site.
Portable 4 to 8 zone heat treating consoles for on-site stress relief, including remote access control.
Two-sided casing and conductor drill for pipe from 6 in to 36 in with thru-spindle coolant.
Portable magnetic drill with 14.5 in travel, 3 in annular cutter capacity and five motor packages.
Battery-powered laser system taking 1,300 pipe end measurements in about 50 seconds, ±0.002 in.
Internal end mill machines that cold cut pilings and casings from inside, from 17 in to 60 in ID.
Share your requirements — our specialists reply within one working day.
Share your requirements — our team will route your inquiry to the right division and reply within one working day.