Geared head drill press
A geared head drill press is a drill press in which power transmission from the motor to the spindle is achieved solely through spur gearing inside the machine's head. No friction elements (e.g., belts) of any kind are used, which assures a positive drive at all times and minimizes maintenance requirements.
Levers attached to one side of the head are used to select different gear ratios to change the spindle speed, usually in conjunction with a two- or three-speed motor. Most machines of this type are designed to be operated on three phase power and are generally of more rugged construction than equivalent sized belt-driven units. Virtually all examples have geared racks for adjusting the table and head position on the column.
Geared head drill presses are commonly found in tool rooms and other commercial environments where a heavy duty machine capable of production drilling and quick setup changes is required. In most cases, the spindle is machined to accept Morse taper tooling for greater flexibility. Larger geared head drill presses are frequently fitted with power feed on the quill mechanism, with an arrangement to disengage the feed when a certain drill depth has been achieved or in the event of excessive travel. Some gear-head drill presses have the ability to perform tapping operations—a reversing mechanism drives the tap into the part under power and then backs it out of the threaded hole once the proper depth is reached. Coolant systems are also common on these machines to prolong tool life under production conditions.
Black Decker BDDP100 Black Bull DP5UL Champion AC35 DELTA 14-651 DELTA 15-344 DELTA 17-950L Delta 18-900L DELTA 32-325 DELTA DP300L DELTA DP350 Fein KBM 32Q Grizzly G8689 Hitachi B13F Jet JMD-18 Jet JDP-15M Jet JDP-15MF Jet JDP-17MF Jet JDP-20MF Jet JBM-5 JET GHD-20 JET GHD-20PF JET GHD-20PFT Jet GHD-20T Jet HP-35A Jet HP-5A Jet J-2500 Jet J-A5816 Jet J-A5818 Jet JDP-12 Jet JDP-17DX JET JMD-15
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