Mark VII Idler Shaft Damage
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Re: Mark VII Idler Shaft Damage
Beautiful work!
Greenie SN 362819 (upgraded to 510), Bandsaw 106878, Jointer SS16466
Re: Mark VII Idler Shaft Damage
... and here's a pic of my sheaves and eccentric on the new shaft. Can't see much of the new shaft, but it's a really nice fit. Should do the job.
Mike -
Mike -
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- 20240303_190446.jpg (216.63 KiB) Viewed 1336 times
ShopSmith Mark VII (406982), with Band Saw, Jig Saw, Belt Sander, and Jointer
ShopSmith Mark VII (400457), (working backup or parts machine)
12" Craftsman Band Saw (113.243311)
12" Craftsman Powered Hacksaw (108.1501)
12" Atlas Commercial (3990) 12" Back Geared, Undermount, Screw Cutting Lathe with Quick Change Gear Box, Taper, Milling and Grinding Attachments
Atlas MFC Horizontal Milling Machine with Vertical Milling Attachment
Atlas 7B Metal Shaper
ShopSmith Mark VII (400457), (working backup or parts machine)
12" Craftsman Band Saw (113.243311)
12" Craftsman Powered Hacksaw (108.1501)
12" Atlas Commercial (3990) 12" Back Geared, Undermount, Screw Cutting Lathe with Quick Change Gear Box, Taper, Milling and Grinding Attachments
Atlas MFC Horizontal Milling Machine with Vertical Milling Attachment
Atlas 7B Metal Shaper
Re: Mark VII Idler Shaft Damage
Thank you!
ShopSmith Mark VII (406982), with Band Saw, Jig Saw, Belt Sander, and Jointer
ShopSmith Mark VII (400457), (working backup or parts machine)
12" Craftsman Band Saw (113.243311)
12" Craftsman Powered Hacksaw (108.1501)
12" Atlas Commercial (3990) 12" Back Geared, Undermount, Screw Cutting Lathe with Quick Change Gear Box, Taper, Milling and Grinding Attachments
Atlas MFC Horizontal Milling Machine with Vertical Milling Attachment
Atlas 7B Metal Shaper
ShopSmith Mark VII (400457), (working backup or parts machine)
12" Craftsman Band Saw (113.243311)
12" Craftsman Powered Hacksaw (108.1501)
12" Atlas Commercial (3990) 12" Back Geared, Undermount, Screw Cutting Lathe with Quick Change Gear Box, Taper, Milling and Grinding Attachments
Atlas MFC Horizontal Milling Machine with Vertical Milling Attachment
Atlas 7B Metal Shaper
- JPG
- Platinum Member
- Posts: 34683
- Joined: Wed Dec 10, 2008 7:42 pm
- Location: Lexington, Ky (TAMECAT territory)
Re: Mark VII Idler Shaft Damage
I say again Fantastic work!!!
Glad we got it figgered out.
Glad we got it figgered out.
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
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Re: Mark VII Idler Shaft Damage
Wow! Can’t wait to get my parts out to you Mike!
JPG, what were the eclips you sent him? I have two different sizes which doesn’t exactly make sense and one is beat up.
JPG, what were the eclips you sent him? I have two different sizes which doesn’t exactly make sense and one is beat up.
Re: Mark VII Idler Shaft Damage
PM me and we can coordinate.
Mike -
ShopSmith Mark VII (406982), with Band Saw, Jig Saw, Belt Sander, and Jointer
ShopSmith Mark VII (400457), (working backup or parts machine)
12" Craftsman Band Saw (113.243311)
12" Craftsman Powered Hacksaw (108.1501)
12" Atlas Commercial (3990) 12" Back Geared, Undermount, Screw Cutting Lathe with Quick Change Gear Box, Taper, Milling and Grinding Attachments
Atlas MFC Horizontal Milling Machine with Vertical Milling Attachment
Atlas 7B Metal Shaper
ShopSmith Mark VII (400457), (working backup or parts machine)
12" Craftsman Band Saw (113.243311)
12" Craftsman Powered Hacksaw (108.1501)
12" Atlas Commercial (3990) 12" Back Geared, Undermount, Screw Cutting Lathe with Quick Change Gear Box, Taper, Milling and Grinding Attachments
Atlas MFC Horizontal Milling Machine with Vertical Milling Attachment
Atlas 7B Metal Shaper
- JPG
- Platinum Member
- Posts: 34683
- Joined: Wed Dec 10, 2008 7:42 pm
- Location: Lexington, Ky (TAMECAT territory)
Re: Mark VII Idler Shaft Damage
OEM There should be only one on the idler shaft.GerikBensing wrote: ↑Mon Mar 04, 2024 10:24 am Wow! Can’t wait to get my parts out to you Mike!
JPG, what were the eclips you sent him? I have two different sizes which doesn’t exactly make sense and one is beat up.
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╟JPG ╢
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
╟JPG ╢
╚═══╝
Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
Re: Mark VII Idler Shaft Damage
For information, I think this is basically what we are making.
Mike -
Mike -
- Attachments
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- NEW Idler Shaft.png (199.69 KiB) Viewed 1214 times
ShopSmith Mark VII (406982), with Band Saw, Jig Saw, Belt Sander, and Jointer
ShopSmith Mark VII (400457), (working backup or parts machine)
12" Craftsman Band Saw (113.243311)
12" Craftsman Powered Hacksaw (108.1501)
12" Atlas Commercial (3990) 12" Back Geared, Undermount, Screw Cutting Lathe with Quick Change Gear Box, Taper, Milling and Grinding Attachments
Atlas MFC Horizontal Milling Machine with Vertical Milling Attachment
Atlas 7B Metal Shaper
ShopSmith Mark VII (400457), (working backup or parts machine)
12" Craftsman Band Saw (113.243311)
12" Craftsman Powered Hacksaw (108.1501)
12" Atlas Commercial (3990) 12" Back Geared, Undermount, Screw Cutting Lathe with Quick Change Gear Box, Taper, Milling and Grinding Attachments
Atlas MFC Horizontal Milling Machine with Vertical Milling Attachment
Atlas 7B Metal Shaper
- JPG
- Platinum Member
- Posts: 34683
- Joined: Wed Dec 10, 2008 7:42 pm
- Location: Lexington, Ky (TAMECAT territory)
Re: Mark VII Idler Shaft Damage
I just noticed your bearing detail has a ridge on one face of the outer ring of the bearing. So NOW I understand where the 1.357 dimension comes from(that has been bothering me!). Still a mystery is the inclusion of the internal race ring bushing that is larger than the 1/2" outer ring spacer in MY eccentric. Unfortunately the SS parts drawings do not get into the details internal to the eccentric.
*Anyone rebuilding the eccentric assembly, I recommend the inclusion of a 1/2" bushing between the two bearings with a 5/8" bore. This places the axial stress between the inner races only rather than through the outer race and the internal bearing balls.
This drawing shows the difference between the inner and outer race width - do I understand correctly??
* In retrospect this is not necessary. The axial stress cannot be avoided through the inner bearing since the outer immovable ring spacer is the recipient of that stress. Cannot hurt however.
*Anyone rebuilding the eccentric assembly, I recommend the inclusion of a 1/2" bushing between the two bearings with a 5/8" bore. This places the axial stress between the inner races only rather than through the outer race and the internal bearing balls.
This drawing shows the difference between the inner and outer race width - do I understand correctly??
* In retrospect this is not necessary. The axial stress cannot be avoided through the inner bearing since the outer immovable ring spacer is the recipient of that stress. Cannot hurt however.
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╟JPG ╢
╚═══╝
Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
╟JPG ╢
╚═══╝
Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
Re: Mark VII Idler Shaft Damage
Yes, you understand correctly, but I am not even sure why I bothered to add the overall dimension at the outer bearing race of 1.371 it really does not matter. Only the inner races contact the e-clips. I assume everyone's overall stack-up dimension through the bearings at the outside of the inner bearing races will vary slightly based on wear. My overall is 1.357.
I believe the internal spacer ring creates a shoulder for the bearings outer race? If you take the spacer out of the eccentric and place it against the bearing, the bearings outer race will sit in the shoulder of those two spacer rings locking them together (so to speak). I don't see any reason why it would be needed since the inside bore of the eccentric aligns everything just fine. But that's how I see it.
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- Inner Ring.png (108.62 KiB) Viewed 1196 times
ShopSmith Mark VII (406982), with Band Saw, Jig Saw, Belt Sander, and Jointer
ShopSmith Mark VII (400457), (working backup or parts machine)
12" Craftsman Band Saw (113.243311)
12" Craftsman Powered Hacksaw (108.1501)
12" Atlas Commercial (3990) 12" Back Geared, Undermount, Screw Cutting Lathe with Quick Change Gear Box, Taper, Milling and Grinding Attachments
Atlas MFC Horizontal Milling Machine with Vertical Milling Attachment
Atlas 7B Metal Shaper
ShopSmith Mark VII (400457), (working backup or parts machine)
12" Craftsman Band Saw (113.243311)
12" Craftsman Powered Hacksaw (108.1501)
12" Atlas Commercial (3990) 12" Back Geared, Undermount, Screw Cutting Lathe with Quick Change Gear Box, Taper, Milling and Grinding Attachments
Atlas MFC Horizontal Milling Machine with Vertical Milling Attachment
Atlas 7B Metal Shaper