Begin by dry fitting balls/nut with bearings. Fit should spin freely without bearing skidding. Assemble using lithum grease and use the retainer and belt pulley to retain the bearings setting the encoder gear towards the frame.

Assemble Frame center onto the ball nut near the encoder gear.

Place the front housing lose onto the ball screw for later assembly

Use 1/4-20 or M6 threaded rod cut to length needed for travel configuration, min travel + 21.5mm. Use locking nut (even loctite) on the internal nut and fully assemble through pivot.

Assemble top frame with limit arm.

Insert M3 nut hardware on frame sides before assembling top, sides, end, and bottom.

Insert screw retainer end into the limit assemble of the frame. Interlock the frame center into the frame assembly.

Insert prewired encoder and encoder gear. Confirm that it meshes with the primary ball nut gear.

Assemble the gearmotor mount without the gearmotor.

Loop the belt and drive pulley over the driven pulley. Adjust the driven pulley so that it doesn't touch the housing faces.

Insert the gearmotor shaft into the drive pulley and set into place, ensure the belt is aligned.

Mount the front housing and set bearings.