About the Sherline 4″
A rotary table used in conjunction with a mill allows a machinist to produce
virtually any part they can design. Sherline’s rotary table is a precision piece
of equipment that has been designed to work with their vertical milling
machines, however, it can be used on any mill whenever the small 4-inch size
would be an advantage. The only limits are size, not complexity.
The table is 2″ high and 4″ (100mm) in diameter. The main components have been
machined from solid bar stock steel, and the complete unit weighs seven pounds.
The table has been engraved with a laser, giving sharp and precise lines every
5°, numbered every 15°. These lines are calibrated with the 72-tooth worm gear
that is driven by the handwheel.
The handwheel is divided into 50 parts, making each line on the handwheel 1/10°.
This allows a circle to be divided into 3600 increments without interpolation.
Seventy-two revolutions of the handwheel rotate the table one revolution.