Mill Digital Readout (DRO)

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Product Description

Digital readout RPM gauge installed on a Sherline Mill

Most full-size shop mills used by machinists are now available with a digital readout. They are popular because they make your life as a machinist much easier. Readouts on the X- Y- and Z-axes can be reset to zero at any time with the push of a button. From there, as you move the handwheels, you can read the table position to 3-1/2 decimal places (.0005″) on the digital readout (Metric versions read to .01mm). You no longer need to count handwheel revolutions or make difficult calculations when cranking in a negative number. Kit includes two 2″ handwheels with encoders for X- and Y-axes and a 2.5″ handwheel/encoder unit for the Z-axis. Also included: digital readout box with LCD display, RPM sensor, power supply, cables, stand and all necessary mounting hardware. No hole drilling required to mount.

As long as we were designing the electronics package, we went the extra step to include an RPM readout, adding an additional function to the package. The sensors are easy to install and require no modification of your Sherline mill. A two-axis DRO package is also available for the lathe. A three-axis package for using the lathe with the vertical milling column can be purchased, or a third axis can be added later if you add the vertical milling column to your lathe. For those with both a lathe and a mill, the electronic readout box can be shared between both machines to offer cost savings if you buy just the additional handwheels and cables for the second machine.

NOTE: The DRO can be ordered on any new machine as a factory installed option. The digital readout handwheels replace the standard handwheels that would normally come with the machine. If you purchase a machine with factory installed DRO, the regular handwheels are not included. If you purchase the DRO as a separate option and install it yourself, you will have the stock handwheels left over.

USE WITH CNC: Though not designed to provide feedback to Sherline CNC machines as a closed-loop system, it can be adapted for use on the rear shaft of Sherline stepper motors for use as a separate readout. See DRO on CNC page for instructions.

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The improper use of machine tools and their accessories can result in serious injury. Before using this tool, thoroughly read the instructions and make sure you understand its proper and safe use.

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Always wear safety glasses when operating machine tools.


Download PDF 8100 Instructions

Instructions PDF Download

81010 Mill DRO box and electronics (complete)
81320 2″ X-axis handwheel, inch (Metric 81322)
81330 2″ Y-axis handwheel, inch (Metric 81332)
81340 2.5″ Z-axis handwheel, inch (Metric 81342)
81100 Encoder housing w/ wheel and cable
81110 Encoder housing upper cap
81120 Encoder housing body
81130 Encoder housing lower cap
81300 (2) DRO X/Y-axis thrust collar assembly
81350 Z-axis thrust collar
81280 #2 x 3/8” Self-tapping pan head screw
81270 2-56 x 3/8″ pan head Phillips screw
81500 Tachometer encoder & cable assembly
81510 Tachometer pickup decal
40440 #2 x 1/4” Self-tapping pan head screw
81310 Encoder star gear
81080 (3) Black tie-wrap
81050 115 VAC Power supply/transformer
81150 Stand for readout display box
45013 Z-axis handwheel support screw

DRO Handwheel Installation

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