NEMA 17 Stepper Motor Mounting Bracket

A NEMA 17 stepper motor mounting bracket, built as ONE solid. Build the solid shapes first, fillet the vertical edges, then do all cuts last. Base plate: 80 mm long, 60 mm wide, 6 mm thick, with the four corners filleted at 6 mm. Four 5 mm mounting holes, 7 mm in from each corner. Vertical motor plate: 50 mm wide, 50 mm tall, 8 mm thick, standing on the back edge of the base, centered left to right. Overlap it 1 mm into the base so it fuses. In the center of the plate, cut a 22 mm round hole for the motor pilot. Around it, cut four 3.4 mm holes on a square pattern of 31 mm between hole centers (15.5 mm from the center in X and Z). Support ribs: two triangular gussets, 5 mm thick, 35 mm long along the base and 35 mm tall, on the left and right sides of the motor plate, each overlapping the plate and the base by 1 mm. Place them 5 mm in from the outer edge of the motor plate. Bearing seat: on the front of the base, centered left to right, 15 mm from the front edge, a cylindrical boss 30 mm in diameter and 12 mm tall that overlaps the base by 1 mm. Cut a 22 mm round pocket 7 mm deep in the top of the boss for a bearing, and a 8 mm hole all the way through the boss and the base. Cable slot: a 12 mm wide, 6 mm tall notch cut into the bottom edge of the motor plate, centered. Sits flat on the ground with the origin at the center of the base.

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