YoraHome SILVERBACK 6060 User manual

YORA SILVERBACK BENCHTOP CNC ROUTER 6060
LEAD SCREW REPLACEMENT
Version 1.0 • March, 2022

Purpose
This Manual is intended for retrofitting 12mm Lead Screws to the Yora
SilverBack Benchtop CNC Router; replacing the 10mm Lead Screws found on
early production units.
This manual is designed to cover this process only, and is not a complete
manual.
Before beginning assembly, we recommend conducting an inventory using
the Packing List to ensure all components are present.
Please read these instructions carefully before assembling your machine to
prevent possible damage to your machine.

Contents
Part 1: Packing List
Part 2: Mechanical Assembly
Part 3: Configuration Changes

Packing List
Part 1
Item Size Picture Quantity
Backlash Assemblies 3
Bearings 6
12mm Lead Screws 2 - Y Axis
1 - X Axis

Mechanical Assembly
Part 2
Preliminary Steps
- For ease of access, position the X axis near the middle of the gantry; and the Y axis
near the front of the machine.
- After setting position; ensure that the Controller is turned off, and the power cord
unplugged.
- Ensure that your work area has ample room around the machine to place major
components.

Mechanical Assembly
Part 2
Step 1 - Prepare New Lead Screws 1/2
Install the Backlash Assemblies to the
Lead Screws; starting at the end of the
Lead Screw with the small shoulder.
Ensure that the spring-loaded nut is
towards the shoulder of the Lead Screw,
as shown.
Depress the spring-loaded nut slightly to
install, providing some tension on the
assembly. The spring does NOT need to be
fully compressed.

Mechanical Assembly
Part 2
Step 1 - Prepare New Lead Screws
2/2
Repeat for all 3 Lead Screws,
positioning the Backlash
Assemblies approximately 6 inches
from the end of the Lead Screws

Mechanical Assembly
Part 2
Step 2 - Remove X Axis Assembly 1/4
Remove the 2 screws holding the Y
Axis drag chain bracket to the X Axis
side plate; this is necessary to allow
the X Axis to be moved to one side.

Mechanical Assembly
Part 2
Step 2 - Remove X Axis Assembly 2/4
Remove the 4 screws on each side of
the machine, holding the X Axis
Assembly to the Y Axis side plate

Mechanical Assembly
Part 2
Step 2 - Remove X Axis Assembly 3/4
Unplug the Y Axis limit switch
connector on the left side of the
machine, to prevent damage to the
wiring.

Mechanical Assembly
Part 2
Step 2 - Remove X Axis Assembly 4/4
Carefully lift the X Axis Assembly off
the machine and set it on the left
side of the work surface.
There is no need to remove any other
wiring, but use caution when moving
to avoid damage to the wiring
harness and drag chain.
The spindle holder mount will keep
the X Axis Assembly from falling over.

Mechanical Assembly
Part 2
Step 3 - Replace X Axis Lead Screw
1/11
Remove the 2 screws attaching the
Drag Chain Support Rail to the rear
of the X Axis Assembly.
Allow the Support Rail and drag
chain to set on work surface.

Mechanical Assembly
Part 2
Step 3 - Replace X Axis Lead Screw
2/11
Remove the 2 screws holding the X
Axis gantry plate to the Backlash
Assembly on the Lead Screw.
This will allow the X Axis gantry to
slide freely on the rail; use caution
to ensure it does not slide and
cause injury or damage.

Mechanical Assembly
Part 2
Step 3 - Replace X Axis Lead Screw
2/11
Note and record the measurement
for position of the X Axis limit
switch contact plates
(approximately 50-55 mm, your
machine may vary).
Remove the top screw, and loosen
the lower screw, allowing the plates
to swing clear of the Lead Screw.

Mechanical Assembly
Part 2
Step 3 - Replace X Axis Lead Screw
4/11
Remove the 2 screws attaching
each bearing holder to the rail; one
near the motor coupler, and one at
the far end of the rail

Mechanical Assembly
Part 2
Step 3 - Replace X Axis Lead Screw
5/11
Slide the X Axis gantry towards the
motor end of the rail; this will allow
clearance to remove the lead
screw.
Carefully lift the end of the lead
screw and remove the bearing
holder and bearing.

Mechanical Assembly
Part 2
Step 3 - Replace X Axis Lead Screw
6/11
Carefully slide the lead screw out
from beneath the X Axis gantry
plate; it may require a bit of effort
to separate the coupling.
The orange elastomer part of the
coupling may stay with the motor
side of the coupling; this is nothing
to cause concern.

Mechanical Assembly
Part 2
Step 3 - Replace X Axis Lead Screw
7/11
Position the removed lead screw so
that the coupling and bearing
holder can be accessed
Loosen the set screw and clamp
screw on the coupling; and remove
the coupling, bearing holder, and
bearing from the end of the lead
screw.
Discard the removed bearing and
lead screw.

Mechanical Assembly
Part 2
Step 3 - Replace X Axis Lead Screw
8/11
Install the new bearing, bearing
holder, and coupling on the long
shoulder of the new lead screw.
Note the flange on the bearing
should be on the inside of the
bearing holder.
Ensure there is a small gap between
the coupling and bearing holder, to
prevent interference.

Mechanical Assembly
Part 2
Step 3 - Replace X Axis Lead Screw
9/11
Carefully slide the new lead screw
into the rail, ensuring the Backlash
Assembly is positioned with the flat
face outward.
Ensure the coupling engages
correctly with the motor side.
Reinstall the screws holding the
bearing holder, ensuring the flange
side of the bearing is seated at the
base of the shoulder on the lead
screw.