Ok, im working on designing a salisbury style differential for our team this year, and I have two questions, should be relatively simple:
1)How much clearance is safely required between the shaft and the bore (roughly 1" depth bore) and 1 3/16" diameter shaft for a hardened 4340 steel-on-steel setup. Machining tolerances are better than .0005". (note this is just for the stub shafts exiting the differential housing, not the bearing surface for the differential itself)
and one more question on splines.
2) The side gears have an ASA-B5 (18 spline) 30 degree PA flat root 16/32 DP also known as a 1-3/16" 18 spline.
I have to make the ends of those stub shafts splined to match that profile. For this, do I make the to-be-splined area of the shaft the same diameter as the Major diameter (1.1875) or slightly greater? A neckdown behind it will not be possible, and the length of the shaft will have to be the same diameter.
1)How much clearance is safely required between the shaft and the bore (roughly 1" depth bore) and 1 3/16" diameter shaft for a hardened 4340 steel-on-steel setup. Machining tolerances are better than .0005". (note this is just for the stub shafts exiting the differential housing, not the bearing surface for the differential itself)
and one more question on splines.
2) The side gears have an ASA-B5 (18 spline) 30 degree PA flat root 16/32 DP also known as a 1-3/16" 18 spline.
I have to make the ends of those stub shafts splined to match that profile. For this, do I make the to-be-splined area of the shaft the same diameter as the Major diameter (1.1875) or slightly greater? A neckdown behind it will not be possible, and the length of the shaft will have to be the same diameter.