Welding sproket

caseyvand · Oct 18, 2010

Hi....I need to weld a 4 inch sproket (for 40 chain) on a 1 inch shaft. All I have is a stick welder. How much of a warp problem can I expect on the sproket? I would guess the shaft will be ok. Any suggestions on what kind of welding rod to use? This shaft is off a 47inch JD snow blower.
Thanks.....Casey

tommu56 · Oct 18, 2010

Why don't you want to key it and use set screws repair will be much easier.

You don't need to weld the whole circumference of the gear 3 1/2" welds on each side should hold it if metal is all new 7018 or 6011 if it is dirty
stitch one side go 180 stitch the other side keep flipping back and forth side to side it shouldn't move.

caseyvand · Oct 18, 2010

Hi......I was thinking of welding because that's the way it was done before. But can you tell me if the metal outlets or machine shops sell 1 inch shafting with keyways already cut?
Thanks.....Casey

tommu56 · Oct 19, 2010

Sure here is were we get them from at work pre made

shaft 3" to 72" you don't need test report

McMaster-Carr
24" x 1" American Iron and Steel Institute (AISI) -0.0005" to -0.0025" 0.012" per foot 1497K101 $41.35

sprocket

Part Number: 6280K844 $25.10 Each

$25.10 Each
Type
Drive
For Chain Number
ANSI 40
System of Measurement
Inch
Pitch
1/2"
Bore
Finished
Finished-Bore Type
Includes ANSI Keyway and 2 Set Screws
Bore Size
1"
Shape
Single Strand With Hub
Number of Teeth
23
ANSI Keyway Size (Width x Depth)
1/4" x 1/8"
Outside Diameter
3.94"
Width
1"
Hub Diameter
3"
Material
Steel

It cant get any easier spending your money :laughing:

I order from them for my self a lot of the times because they usually have stock call today have it tomorrow afternoon.

tom