DoughtyDrive

One of the main features of the Doughty Drive's unique design is that it has NO backlash.

It has a reduction ratio of 30 : 1, giving great holding torque of 20 ft/lbs - 27 Nm.

This ratio gives a very good resolution, 60,000 steps per rev, and 166.666 micro steps per deg., with positional repeatablity of + - 10 arc seconds.

The units maximum fast travel is 120 degs per second, or 20 RPM.

The units can be connected together at right angles to each other and a router or spindle can be attached.

With a chuck attached, the units can be mounted vertically or horizontally, and used like an indexing head or rotary table.

The weight is just 3.5 Kg. (8lb)

Chatham carvings, scan copied then routed from 2mtr x 600mm x 300mm log, with 1.5 HP spindle, 1/2" cutter, 1/2" deep, feed at 200" per minute