Speed increasers improve machine productivity - Modern Equipment Review - Brief Article - Product Announcement

The company announces the availability of a new series of high speed spindle increasers that is said to offer greater rigidity and accuracy. The Big-Sheppard GTGhigh speed spindle increasers make it possible, even on low speed machines, to run cutting tools at higher speeds in order to obtain optimum tool performance and a reduction in machine time usage. Further, since the cutting resistance of the tool tip decreases as the cutting speed increases, the possibility of tool breakage is greatly reduced. In addition, by lowering the operating speed of the machine, heat generation and hearing wear will be minimized, thereby prolonging the life of the expensive machine spindle.

The increasers are equipped with hardened and ground steel gears that minimize noise and vibration. Super precision high thrust angular hearings along with rigid and large diameter spindles permit high speed and feed carbide operations.

Models for machining centers feature a coolant jacket and multi-directional coolant nozzles that efficiently direct the coolant to the tool cutting edge while simultaneously cooling the body. The compact design with adjustable locating pin assemblies and 360-degree adjustable orientation rings assure smooth operation in the automatic toolchangers of machining centers. Models for conventional machines use a stop bar to prevent rotation and are available with NMTB tapers as well as straight shankshe increasers are available in four different ranges. The Model GTG6 has a collet capacity of 3/8" and will increase speeds up to 20,000 rpm with a 6 to 1 increasing ratio. The Model GTG5 has a collet capacity of 3/8" and will increase speeds up to 20,000 rpm with a 5 to 1 increasing ratio. The Model GTG4 has a collet capacity of 5/8" and will increase speeds up to 15,000 rpm with a 4 to 1 increasing ratio. All of these models are equipped with the company's precision New Baby chuck collet system that offers high accuracy. The heavy duty Model NXG3 has a collet capacity of 1 1/4" and will increase speeds up to 8,000 rpm with a 3 to 1 increasing ratio