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Availability:
In Stock.
Arrives
Wednesday, May 27
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Number of Items: 2
Features
- Two 2" Chromium Steel Balls Included
Description
The finest quality chrome steel produced in accordance with the highest industry standards. These high precision G25 ball bearings are hot forged from bar stock. Modern furnaces with precisely controlled atmospheres and temperatures are used for heat treating to assure uniform hardness and proper microstructure for each Stainless steel ball. Throughout the manufacturing process, statistical process control assures tolerance accuracy, fine surface finish and consistent high quality. Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.
Brand: BC Precision
Material: Alloy Steel
Item dimensions L x W x H: 2 x 2 x 2 inches
Item Weight: 1.19 Pounds
Bearing Number: 2
Brand Name: BC Precision
Bearing Number: 2
Bearing Type: Ball Bearing
UPC: 609788945956
Global Trade Identification Number: 56
Manufacturer: BC Precision
Unit Count: 2 Count
Item Dimensions: 2 x 2 x 2 inches
Item Weight: 1.19 Pounds
Item Thickness: 2 Inches
Outside Diameter: 2 Inches
Material Type: Alloy Steel
Compatible Lubricant: Oil or grease
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, May 27
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
The diameter of each is precisely 2 inches (50.8 mm) and each is 536 grams (1.182 pounds). The chrome plating seemed to be uniform. They came with a waxy oily coating (something sticky) and washing that with mild soap revealed dark spots and discolorations. It looks to me like they are very thinly electrodeposited chrome. They seem to be soft magnetic. A magnet will pick them up, and they transmit magnetic field strongly. And seem to retain the field. A bit of looking (after buying them) shows many sites that explain how magnetic. The term is "ferromagnetic" meaning they can retain a fairly strong field. For what I wanted (a pendulum weight) this will cause problems, because the rate of swing will vary according to the natural magnetic field, and anywhere nearby there might be other magnets. Since I use a lot of magnets, that is pretty much everywhere. Why did I not look before? Well, truth be told, I have no way to verify the content of these things. It might be a reputable supplier, but they might get the material from anywhere. It seemed too much trouble to trace out the provenance of such a simple thing - by searching the Internet - when that could all be false. So I bought a pair. I must say, when I weighed them on a little kitchen scale, I was surprised they were exactly 536 grams. And when I measured them with a caliper exactly 50.8 mm (the world is supposed to be on SI units now. You would think corporations would get on board). Anyway I cannot use them for my intended purpose. I somewhat dread looking for "stainless steel". I have some glass spheres that will work, but they are low density. Copper spheres are too conductive. I found some "bullet weights cannonball" lead fishing weights. They are rather roughly made and I have no idea what is inside. One thing I have not really addressed is how to drill a hole in them to hang them. I hate to buy a drill and bits just for two holes. That is the state of the world now it seems. Simple things can take forever to try, just because it is so hard to find, and trust, sources for materials and things. I don't think there is any way to have conversations, or ask questions of other people on Amazon. I have suggested it. Think of all the millions of people with so many backgrounds and skills, and no way to ask anyone for help, except on a product page. If there are hundreds of suppliers for something do you ask the same question on every product page? There has to be a better way. The surface is reflective enough and uniform enough to take photos in the curved mirror surface. I can use small strong magnets to hang them. I just don't have a good way to map the magnetic field. or the hysteresis of the material. A good problem, but some other time. I guess I can use them for hand exercises. Arthritis. Oh. The density is 7.8086 grams/cm^3 and the average value on the web is about 7.73 g/cm^3 The density of chromium is 7.15 g/cm^3 so adding more chromium would make it less dense, not more.
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Reviewed in the United States on May 10, 2022 by Richard Collins
Great product
Reviewed in the United States on August 19, 2023 by Leighton
Slight blemish on one of the balls. I’m using them to strengthen my hands and forearms. They’ve exceeded my expectations for that purpose. The blemish is a point of oxidation, so I have to keep an eye on it.
Reviewed in the United States on June 5, 2023 by Jon
I got these to use as 2" baoding balls (Chinese exercise balls) for hand therapy, wanted something heavier than my traditional hollow ones with the bells inside. First off just wanted to say mine did not have any rust on them and have a mirror finish. I cleaned the grease off with three steps, Gojo mechanics soap, followed by dish detergent, followed by rubbing alcohol, then dried them off. This got them very clean, so clean these squeaked when using them at first. I simply wanted good quality polished steel, nothing chrome plated that could chip off, when searching solid baoding balls they all seemed to be plated. Well these are legit AISI 52100, same steel used in ball bearings, same quality control, with the same mirror finish, because they are actual huge ball bearings. Go to the BC Precision Balls website, and under their chrome steel ball bearings category you'll find a description, "Chrome steel balls demonstrate high hardness, resistance to deformation, and excellent wear characteristics. Chrome balls from BC Precision are manufactured from the highest quality chrome alloy steel and through-hardened for maximum strength and service life. Applications that are ideal for chrome balls include tumbling media, spray can agitation, ball bearings, drawer slides, writing instruments, vibratory finishing, linear motion components, check valves and locking mechanisms." So there you have it. About the same price as the other solid baoding balls, with way better quality. Very happy with my purchase. The shipping was fast too by the way, despite not being prime shipping.
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Reviewed in the United States on February 27, 2021 by Ethan
The bearings came at the right time and were in perfect condition
Reviewed in the United States on May 17, 2023 by Gavin P.
I use these like baoding balls (meditation balls), but for strength and dexterity training. I received them about 4 episodes of Star Trek Voyager ago and have been using them for working both hands since. The size and weight are perfect for me. I plan on getting a second pair so that I can work both hands simultaneously. This is how I chose the size and weight...your use case may be different, so I hope this helps you choose if you are going to use these as baoding balls: I had never done baoding previous to yesterday, so I went on YouTube and looked at a video on choosing the size you want, and a video on technique. I happened to have a lacrosse ball and a tennis ball, so I practiced basic teqnique using those (and will keep doing so). They measured about 5" total diameter and I could manage them, so I decided 2" diameter per would be good since I'm just beginning. I do grip strength training and wanted baoding to supplement it, so I decided on ball bearings instead of actual baoding balls for the weight. Becareful about using too much weight with your hands...you can really screw them up. Oh! You don't want to drop these/be careful where you are using these and who around. They are dense. These are dimensions of my hand: - thumb to pinkie, streched opened hand: 8" - palm width: 3.5" - palm height: 3.5" - bottom of palm to tip of middle finger: 7.5"
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Reviewed in the United States on October 28, 2017 by Anonymous Anonymous
Prompt delivery and as advertised
Reviewed in the United States on February 19, 2023 by Found the Truth