Here is the name plate:
This is an ABS change gear in place
Threading chart for imperial pitches
Speeds & feeds
I added a custom, clear cover to the headstock so I could easily select speeds for correct lubrication.
Tis machine tipped over and the carriage & cross slide cranks were all destroyed, including the quick retract mechanism on the cross slide. I had to rebuild all of this. (Amazon only had red knobs in stock, but black are on the way).
2-Speed 4-pol motor with electric brake. I use a VFD, so the low speed and the brake are not needed.
These controls are wired directly to the VFD and provide speed control, forward and reverse, and full DC braking.
VD and DRO
Regarding the VFD, this is a 5.5kW, 3-phase device powered by 240 VAC single phase. It operates the motor at any speed from 0 to 400 Hz (dangerous!), At full torque over that entire range. It stops the lathe in 1 second using DC braking, which uses the motor as a powerful brake. There are many reasons to use a VFD. It allows much better control over lathe speed while the lathe is running. It provides a large number of protections for the motor including over and under current, open or shorted leads, imbalance of any kind among windings, and much more. It will immediately stop fort any fault condition and protects the motor windings. It also uses PWM (pulse width modulation) to drive the motor which provides full torque at low speeds. It has many inputs and outputs so it can completely emulate everything that the original control panel did and more. I highly recommend using a VFD for these machines. The clear head stock cover allows me to choose speeds that will splash enough lubricant into the spindle bearings.
Also very important - the VFD will soft-start the motor rather than abruptly starting it at full speed. Both the start and stop can be adjusted from 1 to 60 seconds. The DC brake is separately adjustable and I have that set for 1 second. It stops the lathe much faster than the motor brake and the soft start is much better for the motor, gears and bearings.