A couple of years ago i bought a 2j vari-speed head to mount onto my horizontal mill. The head was not expensive and the usual wear points, like the motor shaft keyway, were in good condition, the plastic bushings, splines etc were fine.
I have only gotten around to mounting the head now, powered by a vfd. The first thing i notice is when the spindle is at its fastest, it has very little torque, i can stop the spindle with my fingers, i doubt it could machine much steel that way. Vfd problem ?
The hi-neutral-lo lever on the right hand side of the head, sits in the correct position when in lo range, but i cannot get it to the correct place for hi range. The lever points directly down. What does this suggest can anyone tell me ?
Finally (for now) how do i adjust the spindle speed control ? It has a threaded rod or screw that sticks out on the top casting of the head, secured by a lock nut. How do i work out where this screw should be along its length ?
Thanks.
I have only gotten around to mounting the head now, powered by a vfd. The first thing i notice is when the spindle is at its fastest, it has very little torque, i can stop the spindle with my fingers, i doubt it could machine much steel that way. Vfd problem ?
The hi-neutral-lo lever on the right hand side of the head, sits in the correct position when in lo range, but i cannot get it to the correct place for hi range. The lever points directly down. What does this suggest can anyone tell me ?
Finally (for now) how do i adjust the spindle speed control ? It has a threaded rod or screw that sticks out on the top casting of the head, secured by a lock nut. How do i work out where this screw should be along its length ?
Thanks.