Posted by bradley martin on June 25, 2018 at 19:46:05 from (184.151.37.254):
In Reply to: Pulley removal posted by Bkpigs on June 25, 2018 at 16:35:42:
That is called a " GiB key". They can easily be removed IF there is room behind the sheave to drive the sheave inward on the shaft, thus freeing the tapered GiB key. The big problem arises when the sheave or sprocket is improperly installed leaving no space between the bearing and the sheave. A piece of pipe large enough to slip over the shaft, with a slot cut in it to avoid the key aids greatly in driving the sheave inward and freeing the key. Heat does help on really stubborn ones, but usually is not required. Hesston used a lot of those keys in various applications. If there is no room to drive the sheave inwards, you will likely end up having to cut it off.
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