3/4 or 1 HP.
I would probably feel good about a 3/4 HP being plenty.
3600 RPM (sycronis speed) rated motor.
And probably a 1:1 ratio on the pulleys or maybe a scosh higher, but not over 4000 RPM at the head.
Ratio isn't hard to figure. two - 2" pulleys, (for example) = 1:1 ratio.
If the motor pulley gets bigger, the speed at the cutterhead goes up.
Smaller at the motor, speed goes down.
Note also that overgearing a drive (higher ratio at the motor) tends to cause overloading and starting trouble.
Kinda like driving a stick shift in 2nd or 3rd all the time. :7
A company near us produces molding of all shapes and sizes. They have perhaps four people looking over plans and doing takeoffs, then bidding the molding for the jobs. Given that, it may be useful to...
Many times equipment manufacutrers purchase and use standard production gears. Have a look for a power transmission retail outlet near you and see if your gear can be matched up with a standard from...