Mount Stepper Motors
Setup Power chassis
Mount Chassis
Mount Aux Panel
Mount Power supply
Power Supply no Chassis
Power Supply with Chassis
Power Supply with Chassis & Aux
Mount AC Relay
Mount DC Converter
Mount E-Stop
Mount Limit Switchs
Mount Stepper Motors
Mount Cooling Fan
Wire DC Converter to Power Supply
Wire JK02 to DC Conv
Wire DIV268N to Steppers
Wire JK02 to DIV268N
Wire DIV268N to Power
Wire Steppers
Wire E-Stop to JK02-M
Wire Limit Switches
Wire Limit Switches to JK02-M
Wire Converter/Fan
Mach3 EStop/Limits for JK02
Mach3 Pins/Ports JK02-M5



Hi, if you find these instructions helped with your CNC project, please consider
making a donation to help keep this site going and growing.
To make a contribution click anywhere here


Mounting the Stepper Motors

Basic instructions are for mounting the Stepper motors on your project

Mounting Stepper motors is not particularly complicated, however, due to the extremely
wide range of ways in which they can be mounted and the lack of insight in to what 
machine you are building. I'll keep the instructions just to the mounting points themselves.




AC Mains Power can kill or seriously injure

DO NOT plug in your equipment while you are working on it

Do not drop



Parts Required


Supplied Parts

3x Stepper motors


Parts to be sourced

4 x M5 bolts to accommodate the thickness of the materials used to make your machine.

4 x M5 washers and spring washers


Recommended tools

Electric drill

5mm Drill bit (appropriate for the material your enclosure is made of)

32mm Hole saw.



Parts Overview

Stepper Motor

  1. M5 Mounting points
  2. Mounting flange
  3. Mounting plate
  4. Output shaft
  5. Wiring loom
  6. Front bearing
  7. Coil housing
  8. Rear plate/cover
  9. Rear bearing

The Mounting points (1) are where screws can physically pass through the Stepper motor
for mounting purposes. The Mounting flange (2) is for alignment.



Assembly/Installation process

When choosing your mounting point positions please consider the following:

  1. The Coil housing will produce heat and will require ventilation
  2. Don't mount your motor in such a way that it becomes a structural component
    of your machine, i.e. is used to directly bare loads, Shaft is used in a way
    where it is put under "shear" load, etc..
  3. Motor shouldn't be positioned where it will bare impacts
  4. Motor produces a grate deal of twisting torque and will need to be firmly mounted
  5. Motor will need to be wired, make sure you have provided for that
  6. Do not run wires directly over or on motor as it can produce/receive interference


Motor Orientations

There is are certain way to position/orientate the stepper motors so they will conform
to what your software is expecting find. It's a common error to think that the lowest axis,
the one that moves back and forth is the "X" axis when in fact the "X" axis is the one that
moves left and right. The lower axis, back and forth, is actually "Y". This is because in math
or engineering when using a grid, you have to come across before you can go up.

Even the side to which a motor is mounted on an axis will have an effect as the
wrong side will have the motor running backwards. Now this can be overcome
with software settings if you positively can't put the motors where they should
go but I'll give you the correct positions and you can decide from there.

  • "Y" Axis motor should be mounted at the rear
  • "X" Axis motor should be mounted to the left, and
  • "Z" Axis motor should be mounted on top.

To show the motors in their position the front of the machine is to the right
and back is to the left.



Mounting template (Not to scale)


Manufactures diagram

Hobby CNC's diagram

As the motors are NEMA23 they should conform precisely. The attached DXF is to scale.

Download as .DXF


Installation Process

Once you have selected the desired positions to mount the Stepper motors drill 4 x
5mm mounting holes and cut out the 38.1mm mounting guide on the 3 surfaces as per
the mounting template.  Motor orientation is at your discretion. You can also drill
and cut all the holes slightly larger (+ 0.5mm to 1.0mm) if you are unsure of your
accuracy. This will give you a margin for misalignments. If you do not have access
to a hole saw, you can cut out any other shape (square, octagon) as long as it allows
the mounting flange to sit in it.

To mount the Stepper motors, place them over the 38.1mm cut out and they should
just slot into place. Rotate the motors until the 5mm mounting holes line up. Insert
the bolts.


With the bolts fully through the mounting plates and the mounting surface, it's
important to add both a washer and spring washer  before the nuts as the motors
will produce allot of vibration, heat and torque twist which my result in nuts on
their own to become loose.


Once the nuts have been tightened make sure the Stepper motor is mounted firmly
by grasping by the Coil housing and seeing if the motor has any movement. When
using composite materials be careful not to over tighten as you my crush the
material causing the motor to be misaligned with the Machine surface.



Supplementary Images

No additional images



Next Step

You are now ready to move onto the next step:








This site was last updated 02/08/14