Blades from bearings

kick ass knives ;)

well it looks like we are in luck. after pocking around SKF website and pdf files i have found this data. these are EXPLOROR bearing which we know from the laser engraving on them and there model number. this is what thy hav to say about them.

Bearing steels for through-hardening
The most common steel for through-hardening is a carbon chromium steel containing approximately 1% carbon and 1,5% chromium according to ISO 683-17:1999. Today, carbon-chromium steel is one of the oldest and most intensively investigated steels; due to the continuously increasing demands for extended bearing service life. The composition of this rolling bearing steel provides an optimum balance between manufacturing and application performance. This steel is normally given a martensitic or bainitic heat treatment during which it is hardened to the range of 58 to 65 HRC.

Within the last few years process developments have enabled more stringent cleanliness specifications to be realized, which has had a significant impact on the consistency and quality of SKF's bearing steel. The reduction of oxygen and harmful non-metallic inclusions has led to significantly improved properties of rolling bearing steels - the steels from which the SKF Explorer class bearings are made.
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so ya it looks like we are in luck:thumbup:
 
JTknives said:
kick ass knives ;)

well it looks like we are in luck. after pocking around SKF website and pdf files i have found this data. these are EXPLOROR bearing which we know from the laser engraving on them and there model number. this is what thy hav to say about them.



so ya it looks like we are in luck:thumbup:
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excellent. you can have one, or both, it's your call. obviously shipping is going to be slightly pricey, and we can work out the details of that via email so that personal info doesn't get posted in public.

so just vouch if you want both of em here, just in case another steel junkie is interested. and per my first post, if ya wanna hook a brother up with one of those kick ass knives on a discount, it'd be pretty cool. :D
 
O ya i would want both, its good to have a bunch of material so i can experiment with it to get the best knife and not worry about only having a little bit of material to work with. ya i will hook you up don't worry :)
 
JTknives said:
O ya i would want both, its good to have a bunch of material so i can experiment with it to get the best knife and not worry about only having a little bit of material to work with. ya i will hook you up don't worry :)
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sounds good. feel free to email me from this point on and we'll hash out the details about getting these things off my bench and over to yours.
 
Lapp Dance,

I am 99.9% that bearing is made from 52100 steel. We use the same series bearing (some small 23232 cc/w33 and some bigger 23052 cc/w33) and I have had the part numbers confirmed by Scott to be 52100. I only keep the roller as the races would be to much work. Right now I have about 3000 pounds of these roller. Just need to build a press to reduce them.

James
 
I've given up trying to forge bearings. The stuff we make our bearings from is M-50. Very tough stuff, and a nightmare to forge.
 
looks like 7 3/16 bore a standard size for pinion bearings in rod mills used in mineral mining i have hundreds of the rollers laying around
 
Why not post them for sale and just buy barstock with the cash?

1200 even discounted heavily would be a good deal for both buyers and sellers
 
Well, all you guys with these laying around could sell the individual rollers in the classifieds section here....I'd be interested in a few. (P.S. you can PM me if you have a few to part with)
 
Why not post them for sale and just buy barstock with the cash?

1200 even discounted heavily would be a good deal for both buyers and sellers
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This is what I was thinkin'. Except I think he said they were originally twelve thousand dollars. :eek:

Surely there must be one person in the world that could actually use these bearings as-is. If you want to be generous, why not try to find that person, sell the bearings for $6000, and then buy new barstock? You could then send generous gifts to a bunch of fellow makers instead of just 1 or 2, and still have cash left over for your trouble. Or somethin' like that.
 
It is 52100 or very similar. That bearing will make nice knives. Heat treat it like you would heat treat 52100 and it will make a very serviceable knife.
 
I had several slices of SKF bearing from my last job tested by Fastenal and they were all case hardened.

I wouldn't waste any time on bearings unless you're making tooling for your anvil or something like that.
 
I don't know what you have done with these, but I will take both of them.[If they are in fact 52100 or something close.]
Let me know..... :)
Cp
 
52100 or something close - there have been a number of similar steels , in fact there were in the past at least SKF#1 and SKF#2 amongst others, all differing in hardenability.Test for at least to see if they are case hardened.
 
With the manufacturer name and part number, I can tell you if they are case hardened or through hardened. For Timken bearings, I can give you the exact steel chemistry. For other manufacturers, I can only tell you case hardened or through hardened. You can call me at 330-284-3103. Don't try to contact me here on the forum, as I'm not on very much lately. Calling is best.
 
52100 (or similar) bearing steel is used to make the best FHM balisongs. They test them by stabbing through 1 Piso coins (a lot like US quarters) to prove how tough the tips on the balisongs are. :) I love the stuff! My favorite balisong has a groove from the bearing that was melted down right on its tang!
 
teacher said:
To the top.......... :thumbup:
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I am waiting to hear from the initial interested party. He stated that he wanted them, but we have yet to make shipping arrangements. I have sent him a message stating that I would like to finalize those arrangements, or get his permission to sell them to other interested parties. As soon as I know, I will post the info. Most likely, they will be posted for sale or for trade soon.
 
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