Atlas / Craftsman 12'' Metal Lathe Restoration [1937]

Red Beard Ops,

We do not have the drawing for 10-107 Countershaft. However, most of them seem to have a Woodruff key seat cut for the key that the 10-80 Cone Pulley runs against. And a flat cut that the set screw in the 9-427 2-step pulley runs against. The depth of the keyway in the cone pulley would be shallower for a Woodruff key than it would be for a square key. Broach sets in this size range would normally come with two shims. The second shim would not be used if you were cutting a keyway for a Woodruff key and would be used if the keyway was to fit a square key.
 
wa5cab said:
Red Beard Ops,

We do not have the drawing for 10-107 Countershaft. However, most of them seem to have a Woodruff key seat cut for the key that the 10-80 Cone Pulley runs against. And a flat cut that the set screw in the 9-427 2-step pulley runs against. The depth of the keyway in the cone pulley would be shallower for a Woodruff key than it would be for a square key. Broach sets in this size range would normally come with two shims. The second shim would not be used if you were cutting a keyway for a Woodruff key and would be used if the keyway was to fit a square key.
Click to expand...
10-4, I just milled in a slot and dropped in a 3/16'' square key.
 
OK. Did you have to mill the slot in the pulley or the countershaft?
 
wa5cab said:
OK. Did you have to mill the slot in the pulley or the countershaft?
Click to expand...
I milled the slot in the shaft the pulley rides on to accept a 3/16'' square key. It all fit up nice and solid. The hub and set screw are more robust on this aftermarket pulley.
 
OK. Is the shaft an original? If so, did it originally have a key seat for a Woodruff key for the cone pulley? Or a flat for the set screw? Or nothing?

The final (1966) revision of the assembly drawing shows a Woodruff Key.
 
wa5cab said:
OK. Is the shaft an original? If so, did it originally have a key seat for a Woodruff key for the cone pulley? Or a flat for the set screw? Or nothing?

The final (1966) revision of the assembly drawing shows a Woodruff Key.
Click to expand...
It was an original shaft and it had a 1/8'' woodruff key
 
You must log in or register to reply here.
Back
Top