Center Distance

Magnetic Gears and Magnetic Couplings NEW!

magnetic power transmission through barrier

Clean, Quiet, and Safe Motion — Powered by Non-Contact Technology

No particle generation from tooth surface wear
Operates without the need for Lubrication
Barrier transmission allows for seal-less designs
Low noise and vibration due to non-contact power transmission
Easier assembly with high angular and eccentric misalignment tolerance
Magnetic slip under overload enhances safety conditions
Vibration Transmission Reduction

What is a center distance ?

For a pair of gears in mesh, the distance between the centers of the two gears (the minimum distance) is the center distance.

As shown below with the equation and the diagram, the center distance of the meshing gears, a, is the sum of the pitch diameters (d1 and d2) divided by 2.

a = (d1 + d2) / 2
center distance

For example, if
d1=40
d2=80
then a = (40 + 80)/2
and the center distance is 60.

Also, if there is a limitation on the center distance, due for example to machine design considerations, the center distance may be adjusted by shifting gears. (For more details, please see a separate page.)