Pump gears are generally used in feed pumps. They can pump various media, depending on their design. Due to requirements for leakproofness, they require high-precision pump gears. A pump gear is a central component in feed pumps. The gear transmits mechanical energy from the pump shaft to the liquid to be pumped.
The rotational movement of the gear creates low pressure that draws the liquid medium into the pump, which is why this type of pump is also called a self-priming gear pump. When the liquid is inside the pump housing, the rotary motion presses it against the mating gear. The gear’s speed of rotation plays a key role in the delivery rate. The shape and size of the gearing also determines the type and power of the flow as the liquid exits the pump. The quality of the pump is largely determined by the leakproofness of the gear pump housing. The pump gears’ radial eccentricity and linear movement tolerances are key and are often restricted to a few thousandths of a millimeter.
The pump’s performance requirements determine the material from which a pump gear is made. The composition of the liquid to be pumped determines the metallurgic factors that apply when choosing the gear material. Chemicals and corrosive media often have a tremendous influence. Also, frequent changes in temperature must not cause the gear material to be permanently deformed over the course of its service life.
In most cases, stainless steel is used in manufacturing in order to guarantee a long service life and high quality. To achieve maximum performance and the longest possible service life, pump gears are also hardened or provided with wear-protective coatings such as tungsten carbide.
Precision manufacturing of pump gears in our gear factory is essential, given the massive demands placed on gear pumps and the extreme accuracy they require. Thanks to high-precision CNC machines, many years of experience and innovative technology, we can meet even the most sophisticated customer demands.
At our state-of-the-art machining centers, we will be happy to manufacture custom pump gears that are tailored to your individual needs.
Hänel products are characterized by high quality and optimal running properties, even at high rotational speeds.
Schedule an appointment – there is no obligation – and allow us to demonstrate our expertise in the areas of flank and profile grinding. We look forward to hearing from you! We produce high-precision pump gears that will meet your specific requirements.