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Radial arm drill press. A radial arm drill press is a large geared-head drill press in which the head can be moved along an arm that radiates from the machine's column. As it is possible to swing the arm relative to the machine's base, a radial arm drill press is able to operate over a large area without having to reposition the workpiece.
A radial arm saw is a cutting machine consisting of a circular saw mounted on a sliding horizontal arm. Invented by Raymond DeWalt in 1922, the radial arm saw was the primary tool used for cutting long pieces of stock to length until the introduction of the power miter saw in the 1970s.
Raymond Elmer DeWalt (October 9, 1885 – May 8, 1961) was an American inventor and entrepreneur, who invented the radial arm saw in 1922. In 1924, he founded DeWALT Products Company in Leola, Pennsylvania, to manufacture and sell the “Wonder-Worker” (his name for the radial arm saw). As the company was reaching an early pinnacle of success ...
11/32 inch drills: long-series Morse, plain Morse, jobber. The image shows a long-series drill compared to its diametric equivalents, all are 11 ⁄ 32 inch (8.7313 mm) in diameter. The equivalent Morse taper drill shown in the middle is of the usual length for a taper-shank drill. The lower drill bit is the jobber or parallel shank equivalent.
Rotary hammer drills have an oil filled gearbox, which allows them to operate durably despite the large forces and shocks they receive and the grit-filled environments where they are often used. The type of work they do means that they require a "slip-clutch" which engages when the drill bit jams and sufficient torque is put onto the "slip ...
A morse taper 3 arbor equipped magnetic drill machine using taper shank drill bits. The arbor or chuck on a magnetic drill is attached to the motor. It is a type of clamp used to attach the core drills. There are mainly two types of chuck available for the magnetic drill, industrial arbor (manual tightening) and quick change drill chucks.