E Clip Question

[JIMMIEM]

I've had my Craftsman Table Saw arbor bearings replaced and I'm reinstalling the part in the saw. The E clip that holds the arbor in place appears to be convex instead of being perfectly flat. I'm not sure if I bent it when I removed it or if it was designed this way in order to add more tension. I bought a new E clip from a hardware store which is flat.....I did not order it from Sears. Does it make sense that the original E Clip was designed to be concave?
The Sears replacement E clip was pricey for a reason.....paying for the concaveness.

 

[T45]

does the new one work? is it the exact size?

 

[JIMMIEM]

does the new one work? is it the exact size?

The new one works. The Sears parts diagram lists it at 3/4". The replacement I bought at a hardware store is 3/4".....the exact size but seems a hair thinner than the original. I'm wondering if the Sears part was designed to be concave to add more pressure. When installed I can rotate both the original and replacement with a bit of pressure.

 

[dlcwent]

I can't answer you for sure, but that was my thoughts as well. The concave design could be intentional. JMO

 

[JIMMIEM]

Update. Tthe new clip fit but because it wasn't concave it didn't exert the same pressure on the arbor and the blade wasn't in the same position as it had been with the original clip. This became apparent when the blade would scrape against the zero clearance table saw insert. I thought it might have something to do with the new bearings. I wedged a second e clip under the first one and it moved the blade back to its original position. I guess the concave E clip was concave for a reason.

 

[rharman]

Concave like a wave washer so it has some tension? Just curious.

 

[JIMMIEM]

Concave like a wave washer so it has some tension? Just curious.

I wasn't familiar with the term Wave washer so I did a search. Based on the description and diagram I found it seems more like a Bowed washer than a Wave Washer. The Sears parts diagram just lists it as an E clip. To me it looked concave.

 

[Dagny]

I think you bent it.

 

[gungatim]

I'm no expert, but it doesn't seem very robust to expect an e-clip to exert pressure on something that spins at 3600rpm to hold it in position without actual spacers or shims...

I assume this is a direct drive homeowner grade saw? I'd be curious to see the parts diagram on sears site if you post the item #.

 

[JIMMIEM]

I think you bent it.

That's what I thought. The replacement I found was a hair thinner....maybe if it were the same thickness it would have kept the arbor a bit tighter.

 

[JIMMIEM]

I'm no expert, but it doesn't seem very robust to expect an e-clip to exert pressure on something that spins at 3600rpm to hold it in position without actual spacers or shims...

I assume this is a direct drive homeowner grade saw? I'd be curious to see the parts diagram on sears site if you post the item #.

It just holds the arbor housing which does not spin. It is a belt drive contractor saw. I'll find the Sears part number so you can see it.

 

[JIMMIEM]

The original Sears part number is 6527 E-Ring. Picture looks like it is not flat.
Saw model number is 113.298240

 

[gungatim]

their drawing is useless...but it looks like E-rings are flat, not concave, and have permissible thrust load in that size around 2000 lbs.

I don't think you want the E-ring #43, you want the concave snap ring #50. that is what goes on the arbor, the e-ring is on the other shaft below it according to the blurry drawing...

incidently, nearly everything in their pictures looks wavy, even the pulley...almost as if they scanned a picture off of a piece of fabric...

 

[kythri]

https://www.searspartsdirect.com/craftsman-saw-parts/6527/0009/113/model-113298150/0247/0744600.html

^^ That's certainly not flat.

 

[JIMMIEM]

their drawing is useless...but it looks like E-rings are flat, not concave, and have permissible thrust load in that size around 2000 lbs.

I don't think you want the E-ring #43, you want the concave snap ring #50. that is what goes on the arbor, the e-ring is on the other shaft below it according to the blurry drawing...

incidently, nearly everything in their pictures looks wavy, even the pulley...almost as if they scanned a picture off of a piece of fabric...

I doubled checked the owner's manual and it is Part #43. If you are interested, the owner's manual is available online as a PDF and the schematics are very clear. Yes, the SEARSPARTSDIRECT site pictures are fuzzy.