THREAD CUTTING - Quiz

1) Find the gears required to cut 4.5mm pitch on a lathe having a lead screw of 4 TPI. Gears available from 20 to 120 teeth by 5 teeth with a special gear of 127T.

90T on driver and 127T on driven 127T on driver and 90T on driven 60T on driver and 127T on driven 127T on driver and 60T on driven