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2. Assembly Of X Motor And Y Rails

Overview

The Y motor and Y rails consists of Y motor assembly, Y drive shaft, linear rails, etc...

Required Parts And Accessories

  • Y motor assembly *1
  • PPA1 Y Stepper Mount Spacer PCB *1
  • Y drive shaft *1
  • Bearing KFL08 *2
  • BHSHCS M4X8 *4
  • Sliding T-Nut 20-M4 *4
  • Timing Pulley 2GT-20T-10-d8 *2
  • Idler Pulley 2GT-20T-10-d5 *2
  • Linear Rail MGN12 *2
  • SHCS M3X8 *16
  • T-Nut 20-M3 *20
  • BHSHCS M3X16 *4
  • Column Spacer 3-7-4 *8
  • Screw 304 M6X30 *2
  • Bearing *2
  • Brass spacer *2

Assembly

1. Y Linear Rails And End Stops

Use SHCS M3X8 screws and 20-M3 T-nuts to fix the linear rail to the top of frame.

Rail install position:

Use 3d printed positioning tools to assist with installation:

End stops:

Note

There is a new version of RailEndstop available in the package (also in the download page). Below are the pictures of the previous version.

2. Y Motor

Note

The Y motor assembly is installed on the right side of the frame.

Note

The Y-axis part has been enhanced to use additional spacer brackets as follows.

Attach the KFL08 bearing to the side of the spacer bracket as shown in the picture below.

Use M4X8 *2 + Slide T-nut M4 *2 to install the spacer bracket, then adjust and lock the screws that hold the adjusting KFL08 bearings:

3. Driveshaft Bearing

The Sliding T-Nuts are not required anymore for the KFL08 bearing. Retain only the screws for this step.

Note

The Y-axis part has been enhanced to use additional spacer brackets as follows.

Attach the KFL08 bearing to the side of the spacer bracket as shown in the picture below.

Use M4X8 *2 + Slide T-nut M4 *2 to install the spacer bracket, then adjust and lock the screws that hold the adjusting bearings:

4. Driveshaft And Timing Pulley

Note

One end of the drive shaft has a hole and the end of the Y-motor shaft fits into this hole.

Insert the hollow end of the driveshaft through the KFL08 bearing, through the timing pulley and into the Y motor blue coupler. The driveshaft hole is in place because inside the blue coupler the motor shaft protrudes into the driveshaft section so the motor shaft top goes into the driveshaft hole.

This is a tight fit and may feel like a one-time operation. You can use a rubber mallet to make sure the driveshaft is sufficiently inserted into the coupling.

Tighten the blue coupling set screws. Do not tighten the timing pulley set screw at this stage.

5. Y Idler Pulley

Slide the M6X30 screw through the bearing and the brass spacer.

Install the prepared front idler pulley in the profile screw hole.