The HTA Series actuator hone features an all-electric design that is said to eliminate noise, leaks, valve adjustments and performance variability. In addition to producing gas meter tubes, the machine is useful for resurfacing and repair operations that require light-duty metal removal ranging to 0.03" (0.76 mm) to oversize scratched actuator bores. Other suitable applications include reconditioning die-casting shot tubes and plastic extruder barrels, as well as flow-tube weld cleanup.
An electronically controlled, 3-hp (2.24-kW) AC gear motor powers the spindle at speeds ranging to 300 rpm, while the servo-driven stroking system features a maximum speed of 90 ft/min (27.4 m/min). Available for workpiece lengths of 6 ft. (2-m) and 12 ft. (4 m), the machine can accommodate parts as heavy as 4,000 lbs (1,818 kg) with bore IDs ranging from 2.5" to 21" (63.5 to 533 mm) and ODs ranging to 24" (610 mm).
Other features include Siemens drives and PLC control with touchscreen HMI for setting all machine parameters, including stroke reversal point, spindle/stroking speeds and crosshatch angle calculation. The control incorporates a load meter to determine areas of bore tightness, and it is capable of dwelling the tool in multiple areas to correct part geometry. Automatic tool tensioning is also set through the PLC.
The machine’s ergonomic design includes a moveable operator station, a modular workholding system and a coolant tank that sits on casters and tucks under the machine frame to conserve floor space. It includes a 48-gallon (182 L) coolant reservoir and a paper-media coolant filtration unit.