Drive couplings

[CXR100]

why don't they snap when the oil pump seizes ? ive had one the other day , oil pump completely gone, probably leaking aswell as I had to change bearings in motor as it was a bit hard to turn , but drive coupling was fine, I don't get it why they don't snap like a shear pin on a machine? cant make the motor much good that they don't??

 

[Best]

If they made the drives able to snap if the pump seizes, then the drives would break too easily in normal use. The initial start of a burner motor is hard on the drives even when everything is working nice and free

 

[TVP&H Ltd]

Motors are designed for free running speed not for torque. Its torque thats needed to be able to shear something.