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These 0.250" (1/4”) diameter D-shafts are made from stainless steel for superior strength and precision. Rockwell hardness is 83B with a 10 RMS micron rated finish.
This 99.5:1 ratio gear motor runs at a no-load speed of 60 RPM when 12VDC is applied. Mounted to the back of the Modern Robotics/MATRIX 12VDC Motor driving its gearbox is a quadrature encoder able to run on both 3.3V and 5V. Its bullet connectors are a reliable connection style that allows you to easily reverse polarity to the motor and pass its wires through 14mm holes in goBILDA® channel, even when grommets are installed.