What is a spur gearing?
The spur gearing is the standard gearing for WITTE gear pumps and can be used for low to medium viscosities.
We speak of spur gearing if the tooth flanks are arranged parallel to the axis of rotation. The tooth flanks of the spur gearing engage simultaneously over the entire length. Spur gearing is the standard toothing for low to medium viscosity chemical applications. Because the meshing takes place over the entire tooth width, this type of tooth system has the greatest efficiency, but also the greatest pulsation. However, pulsation is almost negligible at low viscosities. The torque transmission from the drive to the gear wheel is usually carried out via a feather key connection. Other options such as splines are also used for polymer pumps.