Crab Drive

[Joe_Widen]

Making some revisons, found away to make it cheaper and easier to make. Now there is only one piece to weld and the rest is held togetherby stand offs.



Parts (11.76:1 gear ratio)


Modules
1 Alloy 6061 Aluminum Rectangular Bar 1/4" Thick, 4" Width, 3' Length
1 Alloy 6061 Aluminum Rectangular Bar 3/16" Thick X 3" Width X 6' Length
8 Steel Ball Bearing Plain Open for 3/8" Shaft Dia, 1" Od, 5/16" Width
12 Steel Ball Bearing Plain Open for 1/2" Shaft Dia, 1-1/2" Od, 7/16" W
1 Fully Keyed Steel Drive Shaft 1/2" Shaft Od, 1/8" Keyway Width, 24" Length
1 Fully Keyed Steel Drive Shaft 3/8" Shaft Od, 3/32" Keyway Width, 12" Length
1 Plain Steel Oversized Key Stock 3/32" X 3/32", 12" Length
1 Plain Steel Oversized Key Stock 1/8" X 1/8", 12" Length
8 Steel Plain Bore 14-1/2 Deg Spur Gear 20 Pitch, 48 Teeth, 2.4" Pitch Diameter, 3/8" Bore
4 Steel Plain Bore 14-1/2 Deg Spur Gear 20 Pitch, 15 Teeth, 0.75" Pitch Dia, 3/8" Bore
32 Aluminum Female Threaded Hex Standoff 3/8" Hex, 2" Length, 10-32 Screw Size

Total Cost: $479.14