Tuesday, May 22, 2012

Bearing Hub

The bearing hub used in this turbine is a standard four bolt, 1,000lb trailer hub. The studs are punched out to allow for the stainless steel threaded rod that will be used to bolt it all together.

The rear face where the magnet rotor mounts was machined flat in order to give the rotor a "true" surface to mount to. The only other modification was to remove the rear seal to ruduce friction.


One of my concerns was the mount between the hub and the frame assembly. Simply welding the shaft to the frame would not offer the support I wanted. There are multiple ways of overcoming this; welded collars to increase weld area, web style supports welded between the shaft and frame on the rear section, etc.
The mount I used in the end is shown below. The hub shaft has a welded collar installed first, then the steel plate is welded to the shaft and the collar.



When the hub is installed into the frame a second piece of steel plate is installed and 4 1/2" bolts are used to mount the assembly.


This set up gives me the added ability of removing the generator section from the frame easily allowing me to experement with different gennies or mounting systems (stationary bike perhaps?).


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