JPW Industries (JET Machinery) JMD-18 350018 VERTICAL MACHINING CENTER

Technical Description

This vertical machining center features a compact work envelope designed for precision machining operations on smaller workpieces. The table measures 31.750 inches in length by 9.500 inches in width, accommodating workpieces up to 250 pounds maximum weight. The spindle operates vertically with an R8 taper, a standard configuration commonly found on knee-type mills and often associated with Bridgeport machinery. The R8 taper, specified at 3.5 inches per foot, provides approximately 16.26 degrees of angular conversion and securely holds cutting tools using a drawbar mechanism. The spindle delivers a maximum rotational speed of 2,500 RPM with a 2.00 horsepower motor rated for continuous 30-minute operation, suitable for moderate-duty milling and drilling applications. The machine operates across four axes with manual tool carrying capacity limited to one tool, eliminating automated tool change functionality. Travel capabilities include 7.000 inches of Y-axis movement and 3.000 inches of Z-axis vertical spindle stroke, enabling plunge cuts and depth control. The R8 spindle accommodates various collet or solid tapered tool holders, providing flexibility for different cutting tool applications. This configuration represents a conventional vertical knee-type mill architecture, ideal for toolroom work, prototype development, and small-batch production where operational simplicity and manual control are prioritized over high-speed automation capabilities.