DGSI. Durham Geo Slope Indicator

Concrete Sawing and Drilling

Durham Geo Series 10 Continuous Coring Bits
These bits are popular with state highway departments, government agencies and private contractors for retrieving cores up to 14 in. (35 cm) long from asphalt and concrete pavements. Open-back bits accept three-piece expanding adapters to connect the bit to the coring machine. The open back design allows access to the core should it become wedged in the hole. Solid backed bits are one piece construction for ease of operation. The bit adapter is permanently welded to the bit. Bits are available for cores from 1 to 14 in. (2.5 to 35.6 cm).

Coring Bit
Trailer Mounted Coring Drill
This gasoline engine powered coring drill and a 200 gallon water supply tank and mounted on a single-axle trailer. The trailer is provided with a tongue jack and two rear levelers to provide a stable drilling platform. Designed for coring bits up to 16 in. (41 cm) diameter, the drilling system has 21 in. (53 cm) column travel.
Trailer-mounted coring drill

Portable Electric Concrete Core Drill
This coring drill can obtain cores from pavements, floors and other horizontal surfaces. Easily moved with built-in wheels and slide handle, the base may be fixed with anchors or by application of a vacuum. Powered by an 18 amp motor to allow use of bits up to 10 in. (25.4cm) diameter, it features a control panel with an amp meter and dual switch/outlets.

Portable electric core drill
Portable Gasoline Concrete Core Drill
The gasoline engine driven coring drill is ideal when electric power is not available. The 4 cycle 8 h.p. model provides sufficient power to use coring bits up to 8 in. (20.3cm) diameter. Easily moved with built-in wheels. A 12 HP Model available for larger diameter bits.
Portable gasoline core drill