Any Sherline milling machine can be ordered with digital readouts factory installed. The installation includes special handwheels with built-in electronic encoders that replace the standard handwheels. (The standard handwheels are not included when the DRO option is ordered.) These special DRO handwheels are connected to an electronic readout box that translates the handwheel movement into a display of table travel for each of the three axes of movement. The readout for any axis can be reset to zero at any time with the push of a button. Spindle RPM is also constantly displayed on the box whenever the motor is running. The readout can be fitted to either inch or metric machines. See the drop-down menu below for part numbers for each machine.
Digital readouts have become increasingly popular in professional machine shops in recent years because they make working with dimensions easier and help eliminate mistakes in counting handwheel revolutions. The display shows the position of each axis in relation to a zero point that you establish. Inch versions show position to three and a half decimal places or to within .0005". Metric versions show position to within .01 mm. Backlash can be electronically eliminated by setting its measured value into the readout box for each axis. When handwheel rotation changes direction, the backlash value is electronically subtracted before the readout counts in the other direction.
The ease with which distance and direction can be kept track of with this system will add a new level of enjoyment to your machining. It also helps eliminate some of the tedious job of keeping track of handwheel revolutions and thereby helps eliminate errors.
Max clearance (table to spindle): 8.00″ (203 mm)
Throat (no spacer): Optional
Throat (w/ headstock spacer): Adjustable
Travel, “X” Axis: 8.65″ (220 mm)
Travel, “Y” Axis: 5.00″ (127 mm)
Travel, “Z” Axis: 6.25″ (159 mm)
Hole through spindle: .405″ (10 mm)
Spindle nose thread: 3/4″-16 T.P.I.
Spindle nose taper: #1 Morse
Handwheel graduations: .001″ (.01 mm)
Electronically controlled spindle speed range: 70 to 2800 RPM
Width Overall: 15″ (381 mm)
Depth Overall: 14″ (356 mm)
Height Overall (Max.): 20.75″ (527 mm)
Table size: 2.75″ x 13.00″ (70 x 330 mm)
Hold-down provision: 2 T-Slots
Shipping Weight: 40 lb. (18.2 kg)
Movements in addition to X-, Y- and Z-axes: Headstock rotation 90° left/right
Column rotation: 90° left/right
Column pivot: 90° forward/back
Column swing: 90° left/right
Column travel: (in/out) 5.5″ (140 mm)
Motor: 90 volt DC with electronic speed control that accepts any incoming current from 100VAC to 240 VAC, 50 Hz or 60 Hz. Click here for motor specifications
Spindle Speed Range: 70-2800 RPM continuously variable by electronic speed control
NOTE: The electronic unit does not convert inch readings to metric and vice versa; however, it can be initialized to read properly with either an inch or metric Sherline leadscrew.
Download PDF Assembly and Instruction Guide
Download PDF DRO Guide