Sunnen unveils HTR all-electric tube hone
Sunnen says that its HTR all-electric tube hone combines servo precision and cycle-automation features with constant spindle power and 0.1 mm stroke repeatability to hone blind bores or correct tight spots in a bore without operator intervention. The machine handles bores up to 900 mm diameter, while its modular design can be configured for stroke lengths from 2.5 to 14 m.
The HTR's 12 kW spindle motor, combined with a four-step gearbox, produces a constant power band through the entire speed range of 10-470 rpm. The standard servo rotary tool feed can also function as a push-feed system with an optional drive shaft that converts rotary to linear motion, allowing the machine to handle the full range of Sunnen heavy duty and two-stage tools.
A servo rack-and-pinion stroking system drives the spindle carriage at speeds of 0.1 to 48 m/min on hardened and ground ways.
