Step 5 Belting


Installation of Belts

Remove the three belts from their bag. Note that the three belts are of identical length. For all three belt installations, the following process will be followed:

  1. One end of each belt will be inserted into a belt clip with the teeth down. The belt is inserted up from the bottom in the gap nearest the end of the clip as shown in Step 1.
  2. The belt is next inserted into from the top to the bottom in the second gap as shown in Step 2.
  3. Pull the belt so that 2” returns in the direction of the top portion of the belt. Make certain the teeth of the top and lower sections of belt are interlocked as shown in Step 3.

X-Axis Rail Belt Installation

Insert one end of a belt through the belt clip as described above. Ensure that the bottom 2” portion of belt interlocks with the top portion and secure it to the Y-Axis Left Carriage as shown in the image below.

With the M5x10mm screw installed, the belt clip should be attached to the carriage as shown in the image below.

Run the belt (teeth down!) along the X-Axis Extrusion Rail to the Y-Axis Right Carriage. You will need to carefully feed the belt underneath the flanged bearings as shown in the image below. Ensure that the belt does not twist and that the teeth remain facing down.

Use your fingers on both sides of the flanged bearings to feed a portion of the belt up through the flanged bearings as shown in the image below. Push evenly and at the same rate on the belt and a loop of belt should move up between the flanged bearings.

Carefully reach in behind the lower X/Z Carriage motor with the 1.5mm hex wrench, as shown in the image below and pull the loop up and over the X-Axis Motor Pulley.

Ensure that the belt has not twisted and that the teeth are facing down as the belt is placed over the X-Axis Motor Pulley as shown in the image below.

Feed the free end of the belt into a belt clip. For the bottom portion of the belt, pull through enough so that a ¼” (~6mm) gap exists between the Y-Axis Right Carriage and the belt clip as shown in the image below.

Insert a M5x10mm screw through the Y-Axis Right Carriage and into the belt clip. Tighten down as shown in the image below. The belt should be tight enough to snap against the X-Axis Rail when gently lifted, but do not over-tighten as this could bend and damage the X-Axis Motor Pulley.


Left Y-Axis Rail Belt Installation

Insert one end of a belt through the belt clip as described above. Ensure that the bottom 2” portion of belt interlocks with the top portion and secure it to the front-left End plate as shown in the image below.

Run the belt (teeth down) along the Left Y-Axis Extrusion Rail as shown in the image below.

Using your fingers or the 1.5mm hex wrench, feed a portion of the belt up through the flanged bearings as shown in the image below.

Pull enough belt to be fed over the Y-Axis Left Carriage Idler as shown in the image below. Ensure that the belt has not twisted and that the teeth are facing down as the belt is placed over the Idler.

Feed the free end of the belt into a belt clip. For the bottom portion of the belt, pull through enough so that a ¼” gap exists between the left rear End Plate and the belt clip as shown in the image below.


Right Y-Axis Rail Belt Installation

Insert one end of the remaining belt through the belt clip as described above. Ensure that the bottom 2” portion of belt interlocks with the top portion and secure it to the front-right End plate as shown in the image below.

Run the belt (teeth down) along the Right Y-Axis Extrusion Rail as shown in the image below.

Using your fingers or the 1.5mm hex wrench, feed a portion of the belt up through the flanged bearings as shown in the image below.

Pull enough belt to be fed over the Y-Axis Right Carriage Idler as shown in the image below. Ensure that the belt has not twisted and that the teeth are facing down as the belt is placed over the Idler.

Feed the free end of the belt into a belt clip. For the bottom portion of the belt, pull through enough so that a ¼” gap exists between the right rear End Plate and the belt clip.

Insert a M5x10mm screw through the End Plate and into the belt clip and tighten down.


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Rail System Index Wiring

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