CNC Linear Controller – X/Y-Axis Upgrade


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Product Description

About the CNC Linear Controller for the X/Y Axis
This unit is for upgrading the X- or Y-axis of a manual milling machine or lathe for use with a CNC linear controller. The unit includes a CNC linear controller and the necessary parts for upgrading the manual axis to CNC. This linear controller comes with a stepper motor mount for machines not CNC-Ready. This stand-alone controller is programmable from its keypad and controls the function of the stepper motor to which it is attached. The stepper motor may be mounted to the crosslide of a Sherline lathe and the X- or Y-axis of a Sherline mill. (A separate kit is available for the lathe leadscrew as P/N 8870 [15″] or 8880 [24″].)

An 8-pin mini-DIN cable can connect multiple units in a “daisy chain.” The units can signal each other to work in sequence, allowing multiple movements to be accomplished without the use of a computer or master CNC controller. They can also be used in conjunction with existing CNC controllers. The controller is user-programmable with two separate programs of up to 40 operations each. In each block, you can control distance, direction, speed, and whether the program pauses or proceeds to the next block.

The linear controller can also be “daisy-chained” with Sherline’s rotary controller (P/N 8700) to combine rotary and linear movement in sequence. This makes it easy to set up for relatively sophisticated operations like cutting gears without knowing anything about CNC programming beyond what is entered from these simple keypads.

Items included with the CNC Linear Controller:

  • Linear Controller w/Keypad
  • Power Supply
  • #23 Frame Size Stepper Motor
  • Cables
  • Stepper motor mount
  • Dampened coupling
  • Preload nuts
  • Drill guide block and complete installation and use instructions

About the Controller Power Supply Current

The controller power supply is 110-240VAC compatible. It automatically switches from 110V to 240V for countries with 220-240 volt electrical current. The original power supply that we offered with this product was 110 VAC only.


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.


Always wear safety glasses when operating machine tools.

Download 8850-Inch PDF Instructions

Instructions PDF Download

Download 8851-Metric PDF Instructions

Instructions PDF Download

Power Supply Input: 115 VAC 50/60 Hz, Output: 24V, 1 Watt
Stepper Motor 100 oz-in, 2 Amp, #23 Frame size, 400 steps per revolution
Speed 1″/min. to 25 in/min (programmable)
Distance from 0.0005″ to 9.9995″ in steps of 0.0005″
Backlash Compensation Programmable
12050 (4) 8-32 x 3/8″ SHC Screw
40520 10-32 x 3/16″ cup point set screw
67102 Stepper motor mount
671052 CNC Coupling
67106 CNC Coupling Preload nut (RH)
67107 CNC Coupling Preload nut (LH)
67111 (2) 8-32 x 7/8″ SHC Screw
67115 5-40 x 7/8″ SHC Screw
67117 CNC Template, side bushing (rectangular)
67120 (2) Stepper motor preload bearing
8800 (8810 metric) Linear controller (for CNC-Ready)