Z Rod Bearing Block for Creality Ender 3 and Geeetech A10

Simple bearing block that allows for great adjustability int he Z motor position, and constrains the z rod much better in the printer. There are two versions:

33mm:
Specifically this is for a Geeetech A10 and Ender 3, which uses a 33mm depth Nema 17 motor.

39mm:
This is for toher larger Nema 17 Motors, that are 39mm depth.

This uses a 608Z bearing, that measures 20mm diameter, with an 8mm inner diameter. The bearing is an interferance fit. I used a bit of glue on the outer race whilst mounting the bearing.

2 or 4 M3 screws are required to fit the bearing block to the motor, and 2 M4 screws are needed with T nuts to affix the motor to the bottom extrusion.

This will help eliminate Z wobble by constraining and allowing alignment the Z Lead screw much better.