Rear Blade Looking for 2" dia grade 5 or 8 bolt

[bitternut]

Looking for 2" dia grade 5 or 8 bolt that I can fab a new center pivot pin for a scraper blade I recently purchased. The previous owner had welded up the scraper so that it functioned only in one fixed position. The original pin was missing and the original plates were also busted and welded up.

I priced out a new pin from John Deere and got shocked. A new pin would run close to $300 bucks. Guess that was why it was welded up to function in the position he needed it most.

Anyways I have looked locally and have not found anything near large enough. Does anyone know of a good online source for 2" dia bolts?

 

[jake98]

What about a piece of pipe instead?

 

[slowzuki]

Common repair is to turn down an old axle shaft to the right diameter. Might have to get a heavy truck shaft to get one big enough. Common steel you will find at the steel yard is mild steel and won't hold up.

 

[bitternut]

I don't think that pipe would be heavy enough since it is too soft and regular bar stock would also be soft. A nice chunk of oil hardening tool steel would work nice as well as the axle shaft suggested. The only problem is I do not have a lathe so that is why I was thinking a large bolt would be the easiest fix. I know they do make them in the size I need if I can find the right supplier. I found them listed on some web sites but have been unable yet to find one in stock.

I am committed to 2" diameter since that is what the old pin was and I already have the holes drilled.

 

[Brad_Blazer]

Mcmaster has grade 5 and 8:
McMaster-Carr
They also have drill rod. O-1 and W-1 are easyiest to harden and temper yourself. I would probably go this route since it can be hard to predict how long the smooth shank will be on a bolt. A 12" piece will run about $50+ with shipping.
McMaster-Carr

Other possible sources are Online Metal Store | Small Quantity Metal Orders | Metal Cutting, Sales & Shipping | Buy Steel, Aluminum, Copper, Brass, Stainless | Metal Product Guides at OnlineMetals.com Enco - Guaranteed Lowest Prices on Machinery, Tools and Shop Supplies

 

[Foodplot]

Fastenal.com

or

drillspot.com (I've had very good service from them)

 

[edkedk]

What about a 2" ram rod, cut to length, from a hydraulic cylinder?

 

[jake98]

What's the rest of the pivot made out of? I think hardened may be overkill.

 

[KWentling]

What's the rest of the pivot made out of? I think hardened may be overkill.

I agree. Just go to your local machine shop and have one made out of 4140 bar stock. Easy job.

Kim

 

[crash325]

Mcmaster has grade 5 and 8:
McMaster-Carr
They also have drill rod. O-1 and W-1 are easyiest to harden and temper yourself. I would probably go this route since it can be hard to predict how long the smooth shank will be on a bolt. A 12" piece will run about $50+ with shipping.
McMaster-Carr

McMaster-Carr 5" long grade 5 bolt 23.74 each. Plus shipping. I did business with them for a lot of years, both buying & selling. An excellent Co. in my opinion.
Fair prices and fast shipping. Several stores, if the one you contact is out, another store ships.

Good idea to check the whole blade over and see if anything else is needed before ordering 1 bolt.

 

[bjr]

Go to your local metal scrap yard. Some heavy wall tube should be available there. bjr

 

[MtnViewRanch]

McMaster-Carr is going to be your best bet. You can double check with them on how long the shoulder is. Maybe get one that is long enough so that you get enough shoulder in the pivot. Don't forget the lock nut.

Good luck

 

[bitternut]

Thanks for all the good suggestions. After searching through all the web sites I guess McMaster is where I will be getting the bolt and nut. I plan on cutting the head off the bolt and welding it into one of the two new plates that I already have since there will not be enough clearance for the bolt head. Essentially I will have a stud protruding from one of the plates with enough threads for the nut height plus washer. The old plates are 5/8" thick and the new ones are 3/4" thick. The previous owner managed to do quite a bit of damage to the old plates and as can be seen the swivel alignment notches were mostly sheared off. One plate actually was cracked quite severely and had been welded. The rest of the scraper is in excellent condition. The blade is 9' and very heavy duty with class 2 pins.

Here is a picture of the parts being repaired. This project would be a lot easier if they had given me a lathe and a EZ-Track for a retirement gift.

 

[allen in texas]

Thanks for all the good suggestions. After searching through all the web sites I guess McMaster is where I will be getting the bolt and nut. I plan on cutting the head off the bolt and welding it into one of the two new plates that I already have since there will not be enough clearance for the bolt head. Essentially I will have a stud protruding from one of the plates with enough threads for the nut height plus washer. The old plates are 5/8" thick and the new ones are 3/4" thick. The previous owner managed to do quite a bit of damage to the old plates and as can be seen the swivel alignment notches were mostly sheared off. One plate actually was cracked quite severely and had been welded. The rest of the scraper is in excellent condition. The blade is 9' and very heavy duty with class 2 pins.

Here is a picture of the parts being repaired. This project would be a lot easier if they had given me a lathe and a EZ-Track for a retirement gift.

Hmm...
I have an opinion and here it is. The blade is 9 foot with Cat 2 hitch pins.
I figure the reason it was welded up is because a 9 foot blade on a Cat 2 tractor pretty much destroyed a 2 inch pivot pin. Even smaller cat 1 blades nowadays have 2 1/2 inch pins and most are larger, 3 inch and up.

Like I said, just my opinion. Good luck.

 

[SPYDERLK]

Mcmaster has grade 5 and 8:
McMaster-Carr
They also have drill rod. O-1 and W-1 are easyiest to harden and temper yourself. I would probably go this route since it can be hard to predict how long the smooth shank will be on a bolt. A 12" piece will run about $50+ with shipping.
McMaster-Carr

Other possible sources are Online Metal Store | Small Quantity Metal Orders | Metal Cutting, Sales & Shipping | Buy Steel, Aluminum, Copper, Brass, Stainless | Metal Product Guides at OnlineMetals.com Enco - Guaranteed Lowest Prices on Machinery, Tools and Shop Supplies

2" 6818T31 $60.16/ft. Search #6818T31 at McMaster It is hardened Chrome Moly rod -130KSI Yield - ~$60/ft
larry