MFA Fixed Ratio 35mm Spur Geared Motor (RE 540/1 Motor) – MFA 919D1001, Single 100:1 ratio metal gearbox suitable for light industrial, educational, modelling and R&D applications. It is constructed from steel and brass, housed in a protective plastic cover which prevents ingress of dust and dirt and protects the user against accidental contact with gears. The motors is fitted with a bracket with four fixing holes making it easy to mount on a flat surface.For speed regulation see panel mounted speed regulator (order code: 37-1245) (Not for use below 6V operation). MFA Gearbox and Motor 100:1 – 4.5 to 15V