Profile: Diamond Gear Company, Ltd. is a manufacturer of industrial worm gears. We also provide bevel gears, declutchable worm gears, pinion actuators, pneumatic actuators and rack actuators. Our declutchable override actuators are designed to provide manual override capabilities when air supply to the pneumatic actuator is interrupted. Our warm gear consists of sealed adjustment screws which prevents grease from leaking out and debris from penetrating the housing for buried & submersible applications. Our splined adapter bushings are used to aid in the customization of each gear to fit all shapes of valve stems faster.