sfriedberg
Diamond
- Joined
- Oct 14, 2010
- Location
- Oregon, USA
Obviously, there's insane wear on those gears (half gone is about right), but how on Earth did they crack that pinion?
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Large(ish) spur gears RFQ or recommendations
- Thread starter hvnlymachining
- Start date
- Replies 40
- Views 2,012
hvnlymachining
Cast Iron
- Joined
- Jun 21, 2019
- Location
- St.Onge
You guys have provided some good ideas for indexing, now,... who has an idea for getting it on my Cincinnati #3?? I've used the shaper for smaller rack gears, and even a 30 mm keyway 8" deep in T1, but I don't think I want to try the shaper for this one.
hvnlymachining
Cast Iron
- Joined
- Jun 21, 2019
- Location
- St.Onge
That was torched out, they had trouble removing it.
john.k
Diamond
- Joined
- Dec 21, 2012
- Location
- Brisbane Qld Australia
On old relics,you weld up the teeth with sufficient skill that the weld surface needs no more than a run over with a angle grinder..........I would also weld up the pinions ........Id estimate the job with new cut gears costing an astronomical sum .
memphisjed
Stainless
- Joined
- Jan 21, 2019
- Location
- Memphis
no way to plasma or laser it, even rough. Water jet.
Overland
Hot Rolled
- Joined
- Nov 19, 2017
- Location
- Greenville, SC
Memphis has prompted an idea.
Plasma or flame cutting 3" thick may not be so accurate.
However laminating it out of multiple thinner discs, easy laser or plasma cut, might be plenty accurate.
Several ways to join them together after.
I've seen gears made this way from laminates stamped out.
I'm thinking of the big gear only.
The smaller ones are "easy" !
Bob
Plasma or flame cutting 3" thick may not be so accurate.
However laminating it out of multiple thinner discs, easy laser or plasma cut, might be plenty accurate.
Several ways to join them together after.
I've seen gears made this way from laminates stamped out.
I'm thinking of the big gear only.
The smaller ones are "easy" !
Bob
hvnlymachining
Cast Iron
- Joined
- Jun 21, 2019
- Location
- St.Onge
As this does look a bit stone age, the task it performs is crucial, saves many man hours daily, and more than makes up for the cost of repairs. Yes, I expect it to be expensive, time consuming and an all around "job", but it's what the customer wants and they pay their bill every time. As is, they are running a close copy as a backup unit.
hvnlymachining
Cast Iron
- Joined
- Jun 21, 2019
- Location
- St.Onge
I have one member here who has kindly offered assistance with this and I hope we can work together on getting it done. I do thank everyone for the suggestions. If all else fails I have found a machine at a dealer that can handle the gear and I will bring the project in house.
I'm still open to more suggestions if anyone wants to share. Thanks.
I'm still open to more suggestions if anyone wants to share. Thanks.
eKretz
Diamond; Mod Squad
- Joined
- Mar 27, 2005
- Location
- Northwest Indiana, USA
Did you try Productigear in Chicago?
john.k
Diamond
- Joined
- Dec 21, 2012
- Location
- Brisbane Qld Australia
f the winch is used in actual work ,then convert the drive to hydraulic,using the drum you have ...........I have been assuming its from a heritage railway or summat........personally,I d fire any maintenance man who couldnt have that going again in a couple of days with either hydraulic drive,or with a big worm reduction box and a 3 ph motor.............Ive just scrapped new 30 ton winches that would have done that ,and got $400 a ton for them......Use a bit of imagination!
hvnlymachining
Cast Iron
- Joined
- Jun 21, 2019
- Location
- St.Onge
Worm reduction and three phase motor IS how this one works. We discussed hydraulics, but since this one lasted a hundred years in a heavily dusty environment and some weather exposure, it was easy to decide against that.
hvnlymachining
Cast Iron
- Joined
- Jun 21, 2019
- Location
- St.Onge
I'll check in with them if the fellow member here can't help me. Thanks!!
Blazemaster
Hot Rolled
- Joined
- Oct 13, 2009
- Location
- Olympia, Wa
We had a few gears about that size made in bronze by a company called Machinists Inc in seattle
Their site says they cut gears up to 250", and grind gears up to 102"
www.machinistsinc.com
Their site says they cut gears up to 250", and grind gears up to 102"
Gear Manufacturing & Gearbox Repair - Machinists Inc
Machinists Inc. is one of the largest and most diverse gear manufacturing companies in North America. We service a wide spectrum of industries with gears and gearboxes.
www.machinistsinc.com
EmanuelGoldstein
Diamond
- Joined
- Apr 14, 2018
Machinists, Inc used to be The Gear Works. The guy who owned it, after years of peddling the "our mst important asset is our staff" stuff, when he retired instead of selling the company complete he closed it and sold the assets to a friend, and fucked over all the employees.
Yeah, I know, "it's his company and he can do what he wants with it" but on the other hand, I don't have to buy anything from them either. If you think screwing people who have worked for you for thirty years is the way to go, have at it.
There's plenty of other places that can cut teeth. And btw, most of these suggestions are ridiculous.
hvnlymachining
Cast Iron
- Joined
- Jun 21, 2019
- Location
- St.Onge
Thanks for the heads up.
hvnlymachining
Cast Iron
- Joined
- Jun 21, 2019
- Location
- St.Onge
These gears are form cut mild steel, and though the load is light for the winch size, it is operated by less than optimal employees, providing little maintenance and must be long lived under such circumstances.
Your suggestion is a good idea, just not the best in this instance.
Thanks just the same for suggesting.
Your suggestion is a good idea, just not the best in this instance.
Thanks just the same for suggesting.
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