BobsCNC E3 User manual

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BobsCNC Evolution E3, E4, E5, and KL series
CNC Router Engraver
Bearing and Rail Dust Kit
Thank you for the purchase of the BobsCNC rod and bearing cleaner kit. The following is the instructions to put the
product together. If you don’t currently own a wiper kit, they are available from the Old Country Woodworker on Etsy:
Rail and Bearing Wiper Kit and eBay: Rail and Bearing Wiper Kit.
Procedure:
This is a kit for the top bearings and rods for the top X and Y-axis bearing and rods. Each bag is labeled on the bag for
that axis kit.
X-axis’Parts
First thing to do is to thoroughly clean both the rod and bearing on the X-axis of all
dust.
Gather the X-axis bag containing the X-axis parts. The X-axis front bag (photo 1) will
contain, 3 each plywood parts FRX1 FRX3, and FRX4 (Front Right) and FLX1, FLX3 and
FLX4 (Front Left), 1 each FRX2 (Front Right) and FLX2 (Front Left) felt pads, and 4 each
locking washer, flat washer and 4mm X 30mm screws.
The X-Axis Right Rear bag will contain (photo 2), 1 each plywood part RRX1 and RRX3 (Rear Right) and 1 each plywood
part RLX2 and RLX2 (Rear Left), 1 each felt part RRX2 (Rear Right) and RLX2 (Rear Left), 2 cable ties, and 4 each 4mm x
30mm long screws.
Front X-axis’ Assembly
We will start on the front right X-Axis bearing and rod. First remove the 2 - 4mm X 16mm screws just above and just
below to the left of the front bearing (see picture 3) and leave the nut in place using masking tape, so they don’t fall out
(see photo 4). Keep these screws, since you will use them on the Y-axis
assembly.
Get the 2 longer 4mm X 30mm screws from
the rear X-axis kit bag. Place a locking washer
and flat washer on the longer 4 mm X 30mm
screws, then through part FRX1, with the
number facing the head of the screw, then through felt pad part
FRX2, then part FRX3, and FRX4 then insert the screw back into
the frame and into the existing nut. Don’t tighten the screws yet until,
the felt parts FRX2 is adjustable. Push the felt pad down until they are
touching the bearing and the rails. When they are touching then
tighten the screws. Photo 5 shows the front X parts mounting on the
assembly.
Photo 1 Front X
Parts
Photo 2
Rear X
Parts
Photo 4
Photo 3
4mm screws
to remove

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Now repeat the above step for the left side x-axis parts starting with the letters FLX. When completed with the front left
x-axis, the front x-axis is complete. Proceed to the rear x-axis assemble, next page.
Rear X-axis’ Assembly
Now we will start the rear right of the X-axis (see
Photo 6) for the top bearings and rods using Rear X
parts, refer to photo 5. First cut and remove the
cable tie just above the bearing carefully, not to cut the wires on the back. Then remove the 4mm X 10mm screw just
above and left of the bearing. For the rear parts assembly you will only use one (1) 4mm X 30mm screw with locking
washer and flat washer through the top hole. Assemble the parts in this order: place the locking washer and flat washer
on the screw, then through the top hole of RRX1, then through RRX2 felt pad, then RRX3, and then install assembly
above the bearing and screw into the existing nut. Adjust the felt pad so that it touches the bearing and rail. Then
lightly tighten the screw. Make sure the felt pad is touching the bearing and rails. Take a cable tie and route it through
the top of the two holes through all parts and on the mainframe over the wires on the back and back through the
bottom of the hole, then tighten the cable tie and then the screw. This now completes the right rear X axis assembly,
repeat the above steps for the left rear axis using the parts starting with RLX. See Photo 7 for what the assembly should
look like when installed as looking at the bearing.
Once installed, they will brush clean both the bearing and rails while the X axis moves, keeping both clean. Once every
few projects are completed on your CNC, best to blow air over the felt pads, so the dust will not clog them over time.
This completes the X-axis.
Photo 6
Front Assembly
Mounted.
Rear Screw
Mounting Hole
Cut Cable Tie
being careful
not to cut wires
on other side
Photo 5
Left Front X Axis Final
Assembly
Bearing Side View
FLX1
FLX2
FLX4
FLX3
Photo 7
Rear X axis
Installed
Install
Cable Tie
Here
RX1
RRX2
RRX3

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Y-Axis Installation
The first thing to do is to thoroughly clean both the rod and bearing on the Y-axis of
all dust.
The Y-axis bag contains the Y-axis parts, see photo 8. It will contain, 1 each
part RY1 and LY1, 1 each part RY2 and LY2, 1 each part RY3 and LY3, 2 each
4mm nut, flat washer, and 4mm x 20mm long screws, see photo 6 showing
each part in order as described. The third smaller screw, that is in
the picture, is the one taken out of the X-axis previously.
Start by removing the 2 - 4mm X 16mm screw just above and just
below of the left bearing (see picture 9 red arrow for location) and leave the nut in place. It is best to place masking
tape over the nuts to hold them in place before removing the screws as shown for the X-axis.
Then using the 2 - 4mm X 20mm screw from the Y-axis kit, mount part RY1 by inserting the 2
screws back through part RY1 into the frame and into the existing nuts and tightening the
screws. Then using the 1 - 4mm 16mm screw that you took off previously from the x -axis,
insert it through part RY1 from the back of RY1. Then through the felt parts RY2, then add
plywood part RY3 and install 4 mm nut, as shown in Photo 10. Don’t tighten the screw yet.
Adjust the felt pad so that it is rubbing on the rail, then tighten the screw.
Then repeat the above steps on the other side using the LY parts. Lastly, remove the masking
tape you put on to hold the nuts from all axes. Once installed, the pads will brush clean both of
the rails while the Y-axis moves, keeping both clean.
This now completes the installation. You should no longer have a problem with the dust
getting under your bearings and rails. Remember, after every few projects are completed on
your CNC, best to blow air over the felt pads so the dust is removed off of the felt pads to stop
them from clogging then over time.
I hope you enjoy having your bearing and rods clean while the CNC is running. Please let your
friend, with the same Bob CNC, know where they may get a set for themselves or order another
to give away as a gift to someone you know.
Thank you
Old Country Woodworker
Please contact us with any questions at [e-mail]
Left
Side
Right
Side
Photo 9
Photo 8
Y axis parts
Photo 10
Right
Side
Photo 11
Y-axis
Finished
Installation