--- product_id: 25384568 title: "BC PrecisionPremium 4” Chrome Steel Large Bearing Ball – G100 Precision Grade for Industrial & Mechanical Use – High Tolerance, Mirror Finish – Better Than Low Grade Alternatives" brand: "bc precision" price: "3853525₫" currency: VND in_stock: true reviews_count: 8 url: https://www.desertcart.vn/products/25384568-bc-precisionpremium-4-chrome-steel-large-bearing-ball-g100-precision store_origin: VN region: Vietnam --- # 4" Diameter AISI 52100 Steel High Precision G100 BC PrecisionPremium 4” Chrome Steel Large Bearing Ball – G100 Precision Grade for Industrial & Mechanical Use – High Tolerance, Mirror Finish – Better Than Low Grade Alternatives **Brand:** bc precision **Price:** 3853525₫ **Availability:** ✅ In Stock ## Summary > ⚡ Elevate Your Projects with Precision Power! ## Quick Answers - **What is this?** BC PrecisionPremium 4” Chrome Steel Large Bearing Ball – G100 Precision Grade for Industrial & Mechanical Use – High Tolerance, Mirror Finish – Better Than Low Grade Alternatives by bc precision - **How much does it cost?** 3853525₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/25384568-bc-precisionpremium-4-chrome-steel-large-bearing-ball-g100-precision) ## Best For - bc precision enthusiasts ## Why This Product - Trusted bc precision brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smooth Operation:** Designed to reduce friction and enhance efficiency. - • **Quality Assurance:** Each ball meets stringent G100 standards for reliability. - • **Durable Construction:** Made from premium AISI 52100 chrome steel for longevity. - • **Precision Engineering:** Crafted for unmatched accuracy and performance. - • **Versatile Applications:** Ideal for various mechanical and DIY projects. ## Overview This 1 Pack of Large 4" Inch Chrome Solid Steel Bearing Balls (G100) is engineered from high-quality AISI 52100 chrome steel, ensuring exceptional durability and precision for a wide range of applications. Perfect for professionals and DIY enthusiasts alike, these bearing balls are designed to deliver smooth operation and reliability in every project. ## Description BC PrecisionPremium 4” Chrome Steel Large Bearing Ball – G100 Precision Grade for Industrial & Mechanical Use – High Tolerance, Mirror Finish – Better Than Low Grade Alternatives ## Features - High Precision Grade G100 - Finest Quality AISI 52100 Chrome Steel ## Product Details - **Brand:** BC Precision - **Material:** Steel - **Item dimensions L x W x H:** 4 x 4 x 4 inches - **Bearing Number:** G100 - **Bearing Type:** Ball Bearing ## Images ![BC PrecisionPremium 4” Chrome Steel Large Bearing Ball – G100 Precision Grade for Industrial & Mechanical Use – High Tolerance, Mirror Finish – Better Than Low Grade Alternatives - Image 1](https://m.media-amazon.com/images/I/614cN5+hz-L.jpg) ![BC PrecisionPremium 4” Chrome Steel Large Bearing Ball – G100 Precision Grade for Industrial & Mechanical Use – High Tolerance, Mirror Finish – Better Than Low Grade Alternatives - Image 2](https://m.media-amazon.com/images/I/51knt6zlUcL.jpg) ![BC PrecisionPremium 4” Chrome Steel Large Bearing Ball – G100 Precision Grade for Industrial & Mechanical Use – High Tolerance, Mirror Finish – Better Than Low Grade Alternatives - Image 3](https://m.media-amazon.com/images/I/71P7kM7+KyL.jpg) ![BC PrecisionPremium 4” Chrome Steel Large Bearing Ball – G100 Precision Grade for Industrial & Mechanical Use – High Tolerance, Mirror Finish – Better Than Low Grade Alternatives - Image 4](https://m.media-amazon.com/images/I/81tFlZ51+ML.jpg) ## Questions & Answers **Q: How much does this ball weigh?** A: This balls weighs 9.45 pounds. We thank you for your interest. **Q: Would this ball be attracted by a magnet?** A: Yes, chromium steel is attracted to a magnet. **Q: Can this steel be welded?** A: Yes, but it would be best to use a TIG welder. **Q: can they be drilled and tapped for a bolt to insert?** A: These balls are 60 to 67 Rockwell so can only be drilled with carbide or diamond drills and tapping is out of the question. If you need a threaded hole use a threaded insert that's press fit, brazed, soldered, or bonded with something like Loctite 603. ## Customer Reviews ### ⭐⭐⭐⭐⭐ " Its mine... my own... my precious!" *by D***R on May 20, 2023* I'm convinced, it very easily could have been "Lord Of The Balls" instead of the rings... But I guess " One Ball to rule them all" sounds a bit corny. LOL - It truly is a fascinating object. Few things you see or feel have these qualities of weight, shape, smoothness, reflection, temperature. I have the 2,3 and 4 inch. The 3 inch are amazing for self-message pressing deep into muscle as it glides along. I got the 4 inch because I was drawn to it's power!!! I really hope I don't have to make that trek to some fiery mountain to throw them away....The quality of each was very good... shiny, smooth, and PRECIOUS!!! OH NO... They have a 5 inch one??? ### ⭐⭐⭐⭐⭐ It's a big shiny solid heavy ball. This is much more fun than it sounds *by J***X on December 10, 2018* It's almost the size of a bocce ball or candlepin bowling ball, but like 4-5 times as heavy (about as heavy as the head of a medium size sledgehammer, so be advised accordingly).Magnets stick to it. It could make for a really neat storage unit for magnetic pushpins.It is precision engineered to a tolerance of about 10 microns (what G100 means, conservatively approximating)It has a mirror-like finish, though they're engineered for their smoothness and not reflectivity, so it's not as bright as a mirror reflection.It arrived in two nested bags inside a small cardboard box, covered in a lubricant (they are industrial after all), but it washes off easily with soap and water.It is a physically compelling object with no obvious application in the home, but their large inertia and incredibly smooth rolling/spinning makes them fun to play with.You will want a stand with a divot in it that it can rest in, because it's heavy, hard enough, and round enough to roll at the slightest incline. It's also heavy enough that I would worry about denting/breaking floorboards if they fell from desk height or higher. Please roll responsibly. ### ⭐⭐⭐⭐⭐ Huge! *by D***I on August 4, 2020* Oh man - this things is cool! I got a 3” ball a while ago then this one ... even though it’s only 1” bigger than the 3” - it seems like twice as big! It’s super heavy, smooth, shiny and BIG. I like holding it, rolling it around, feeling the weight and exercising with it. I am definitely going to end up getting a 5” as soon as I can afford it! ## Frequently Bought Together - (1 Pack) Large 4" Inch Chrome Solid Steel Bearing Ball G100 - BC Precision - (2 Pack) 2" Inch Chrome Steel Bearing Balls G25 - BC Precision - One 3" Inch Chrome Steel Bearing Ball G100 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/25384568-bc-precisionpremium-4-chrome-steel-large-bearing-ball-g100-precision](https://www.desertcart.vn/products/25384568-bc-precisionpremium-4-chrome-steel-large-bearing-ball-g100-precision) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-23*