ENHANCED FAN AND FAN DRIVE ASSEMBLY

摘要

A fan drive assembly comprises a cooling fan 11 including a spider portion 15, a hub 17 mounted to said spider portion 15 and a plurality of blades 19 extending radially from said hub 17. The spider portion 15 has a central opening defining a pilot diameter 79. The assembly also has a body member 23 having a rearward surface 57 with a plurality of mounting portions 67 formed thereon, each of said mounting portions 67 defining an spider mounting surface 75 and a radially disposed pilot surface 77 configured to contact said pilot diameter 79. Each of said mounting portions 67 defines an outer periphery and a machine chucking surface 73 at said outer periphery. The outer periphery of said plurality of mounting portions 67 is circular and said machine chucking surface 73 is linear. The assembly also includes a means for attaching said spider portion 15 to said plurality of mounting portions 67 with said spider portion 15 contacting said mounting surface 75 and said pilot diameter 79 in engagement with said pilot surface 77. A coupling member 27 is engageable between said body member 23 and a source of rotational motion to transmit torque to said body member 23, thereby rotating said cooling fan 11.