10 inch Refractor Renovation - Al-Paslow
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This is the Declination shaft with the tapered roller bearing being removed from the race. Here is the first sign we may have possible deign concerns. The bearing is removed easy by hand. It is NOT pressed on. If the shaft had a small bearing at this end and a larger bearing at the other end, the bearings could be "pressed fitted" on the shaft and still provide the instrument that can be dismanted easily. However, theat would mandate the bearing you see now must face the opposite direction (ie tapered end pointing out NOT in as shown.) 
Tight clearances are obtained with the press fitting of bearings on shafts rather than simple setup pictured here. (See more about this later.)

This is the Declination shaft with the tapered roller bearing being removed from the race. Here is the first sign we may have possible deign concerns. The bearing is removed easy by hand. It is NOT pressed on. If the shaft had a small bearing at this end and a larger bearing at the other end, the bearings could be "pressed fitted" on the shaft and still provide the instrument that can be dismanted easily. However, theat would mandate the bearing you see now must face the opposite direction (ie tapered end pointing out NOT in as shown.)
Tight clearances are obtained with the press fitting of bearings on shafts rather than simple setup pictured here. (See more about this later.)

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