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Zagar Model 100 Automatic Drill Units

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Model 100 units are air-operated, electric motor driven, production drilling units manufactured and assembled at Zagar inc., Cleveland, Ohio. Designed for automatic, precision hole making operations that include drilling, counter sinking, counter boring, spot facing, reaming, deep hole peck drilling, and de-burring (both ends of thru hole). Standard automatic cycle includes both rapid and controlled feed. Length of rapid and feed segments are adjustable. Feed rate is adjusted and controlled using a self-contained, constant velocity, hydraulic feed cylinder. Feed cylinder is dual shaft mounted with a linear support ball bearing to eliminate quill deflection under load. Quill feed is air actuated by a double-acting piston for 4" (100mm) of travel. Spindle is involute spline driven with dual angular contact precision bearings a the spindle nose. It also includes a mid-unit ball bearing for extended radial load capacity and reduced spline wear. T.I.R. of spindle rotation is within .0005" (.013mm) Full depth is controlled by a positive stop assembly on the center line of the quill to prevent deflection. Positive stop features a worm shaft and gear for micrometer adjustment of end depth position. Spindle rotation is electric motor driven by US, NEMA, T.E.F.C., 3PH, 208/230/460 VAC, motors available as 1/2, 3/4, and 1HP standards. Extensive range of configurable output speeds are available using timing belts, pulleys, and an adjustable belt tensioner. Unit is sealed for operation in any orientation with standard foot mount bracket or universal, column assembly. Spindle noses are configurable with single angle standards, JT tapers, ASA bores, over-spindle quick-change adapters, ABS or HSK standards, and flange mounts for multiple spindle drill heads. Spindle travel limits are set using quick-disconnect proximity switches. Unit is lubricated with long lasting synthetic grease for minimum maintenance. Protective plexi-glass shield is provided over feed cylinder and positive stop.

Timing belt & pulley drive with adjustable belt tensioning idler assembly (see speed chart)

One handed tool change demo. Click image at right to run video

Constant velocity, hydraulic feed control cylinder & quick disconnect,stroke control proximity switches

Shown with quick-change over-spindle adapter and single angle collet holder

Multiple spindle, Model 100 vertical drill station