Motor frames, shells, etc, involve certain right angle machining at a distance from the machine spindle. The long reach right angle milling head is specially designed to do critical machining operations for motor frames, shells etc, that involve certain right angle machining at a distance from the machine spindle. The hardware specifications of the machine include a single piece cast body, a pair of spiral bevel gears, a spindle and a shaft. The shaft is bearing-supported in the housing and at its front end, a bevel gear is mounted which in turn drives another bevel gear mounted onto the spindle back. Its input and output ratio is generally 1:1and the spindle taper can be bt/ iso/mt. Perpendicularity of the mounting flange with the spindle is ensured within 0.05 mm of the entire length of 1 metre. A pair of taper roller bearings rigidly supports the spindle in the front. There is an angular contact bearing after the drive bevel gear to support the spindle on the back. A pair of deep groove ball bearing in the flange side and another matched pair of angular contact bearings at the spindle side supports the main drive shaft inside the housing. The sophisticated bearing system of the right angle milling head guarantees proper locational support as well as preloading. To prevent oil leakage, an oil bath with due care is provided for the bevel gears and all the bearings of the attachment. The spindle, shaft, and gears are manufactured of en-353 case hardening steel, case hardened and ground.
