Assembly Instructions Beta Prusa Standard & Deluxe
01/07/14
Motor assembly
Push the gear onto the motor shaft like it is shown in the picture above and secure it with a
M3 x 8 mm grub screw. Make sure, one grub screw points to the flat side of the motor shaft.
Then attach the Motor to the x end with three screws M3 x 10 mm and fitting washers. Make
sure the motor cable is pointing outwards.
Screw the x carriage onto the linear bearings of the x-axis with M4 x 12 mm screws and
washers and check if it can glide smoothly over the rods. One M4 screw needs to be fixed
without washer.
Assembly detail step 2.7
Assemble the belt clamps onto the X carriage as shown in the picture above. On the upper
side mount a belt clamp without channel (teeth downwards) and on the lower side mount the
belt clamp with channel (channel upwards) and below a belt clamp without channel (teeth
upwards). Secure the clamps with two M3 x 35 mm screws, washers and nuts.
Additionally put a M3 nut into the deepening in the middle and screw a M3 x 20 mm screw
horizontally through the part. Depending on your model the nut might be already casted in.
Now clamp the belt onto the upper side and loop it around the belt guide on the one side and
around the gear on the other side and back to the carriages. Here the belt goes through the
channel of the belt clamp with channel to the middle and back out under the clamp, but
above the clamp without channel. Tighten the belt a bit and clamp it with the screws on the
belt clamps. You can now regulate the belt tension with the horizontal screw.
Check again that the x carriage can be moved without problems and cut off the left over belt.
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