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37 mm Gearmotor Clamp Mount Plate
A split clamp collar that grips the 37 mm round body of a JGB37-520 / 37D class gearmotor (37.3 mm bore, 23 mm of grip, two M3 pinch bolts with captured nuts) on a 78 x 56 x 7 mm flange that presents the standard NEMA 17 31 mm bolt square as four M3 heat-set inserts, so a DC gearmotor drops straight onto a chassis already drilled for a stepper. Two M5 clearance holes 67 mm apart on the ears bolt it flat to a 2020 extrusion, and the motor gearbox face registers against a 1 mm deep seat around the 26 mm shaft opening.
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