The screw was pioneered by Birmingham fastener distributor and maker Forward Engineering
I think Tim Brooks is the man who developed it from its french patent
Forward Engineering may now be
Forward Industrial Products Group
If they no longer make or have them you could try a locking wheel nut...
I came across this page which may be useful for anyone having controller troubles with the mills of lathes
http://www.littlemachineshop.com/Reference/DriveTroubleshooting.pdf
Hi Baron
Permag? I'll take your word for it. Mine looks the same and has a field winding.
Armature windings are difficult because they are normally buried on one side. That's why I only suggested it for the field winding.
I think you are all on a bit of a wild goose chase with the AC or DC motor.
Most motors with brushes are AC or DC (things like power drills and vacuum cleaners) They have a stationary field winding and brushes which connect via the segmented commutator to the moving rotor windings.
I could...
If you have all your parts back, a simple test of your controller.....
Connect up with the bulb instead of the motor. Get your multimeter out and set to DC 20v range and check the voltages at the pot.
One end should be 0v, the other end 12v and the middle terminal should vary as you turn the...
If the bulb came on at full brightness then I either the Devices (thyristors or in this case FETs I think) which control the motor are short circuit so basically on all the time OR possibly the pot which controls the speed could be open circuit.
I have posted a controller circuit at...
Right....the motor is ac or dc. 110v applied directly should make it run.
Try that first.
If its labelled 240v you should be safe up to that voltage AC. I think up to 180 ish DC.
Try the controller with a 60w (or similar) light bulb connected instead of the motor.
If the motor runs at top...
Old thread but...
X2 mill with XMT2335 pcb, randomly wouldn't start then wouldn't start at all. Yellow led by emergency switch coming on as speed control turned on.
Fault, dead surface mount transistor on back of PCB (Q2?) PNP nothing special also short circuit scr marked Q4 100v 0.8 amp...