grease zerks on couplings

[snapper]

ya know how on belt drives there is a grease zerk on the coupling from the trans to pulley shaft?? What is the purpose odf this zirk??? It is either to help hold the coupling in place, or to ease in removal later, but i am guessing to hold it in place.. So does any one know??

Later snapper

 

[Craig Jones]

The reason for the grease fitting is the coupling slides a small amount due to lateral forces of the shaft going to the drive pulley.. We had one of the shaft go bad due to lack of grease, i. e. the teeth rounded out.

Hope this answers your question..