TOPSCNC Heavy Stepper Motor mounts and Adjustable Z tension

thingiverse

Here are my files for the modifications to fit these NEMA 17 Steppers. They have a 34mm x 34mm mounting pattern as opposed to the standard 31mm x 31mm. BEFORE YOU PRINT THESE. MAKE SURE YOUR TOLERANCES ARE VERY CLOSE. print some test cubes for size and make sure your accuracy is within .05 -.1mm. X and Y axis stepper adapters print as placed with support over 60 deg and support floor and roof. These SNAP into the openings snugly. Use the new holes as a guide, and drill the original plates with a 3mm drill bit. you will also need to source longer M3 bolts, I had every size from 16-25mm make sure you get extras. Adjustable Z Axis Motor Mount print as place with the same settings. The motor mount plate can be printed flat no support. With the 4 counter sinks towards the bottom. When assembling slide the motor mount plate into the housing, so that the mounting holes are aligned through both pieces. Use M3 x 15mm screws or longer with counter sink heads. You will see a slot in the plate, this offers belt tension adjustment. Use 1 M5 Bolt with Locking nut to secure after belt is tensioned. The 8mm spacers are to adjust your gear height on the Z_Axis Lead Screw.