What is a spur gearing?
The spur gearing is the standard gearing for gear pumps from WITTE and can be used for low to medium viscosities.
We speak of spur gearing when the tooth flanks are arranged parallel to the axis of rotation. The tooth flanks of the spur gearing engage simultaneously over the complete length. The spur gearing is the standard gearing for low to medium viscosity chemical applications. Because the meshing occurs over the entire tooth width, this type of gearing has the greatest efficiency, but also the greatest pulsation. However, pulsation is almost negligible at low viscosities. Torque is usually transmitted from the drive to the gear via a keyway connection. For polymer pumps, other options such as splines are also used.