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Machined Iron Olympic Weight Plates

Precision machined plates with a guaranteed weight tolerance of +/- 1% for 45, 35, and 25 and +/- 3% for 10, 5, 2.5 and precision fit 50.5mm center hole.





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Out of stock: "Pair of 5lb Machined Plates" doesn't have sufficient quantity in stock.


Out of stock: "Pair of 5lb Machined Plates" doesn't have sufficient quantity in stock.


Out of stock: "Pair of 5lb Machined Plates" doesn't have sufficient quantity in stock.


Out of stock: "Pair of 5lb Machined Plates" doesn't have sufficient quantity in stock.


Out of stock: "Pair of 5lb Machined Plates" doesn't have sufficient quantity in stock.

Machine Iron Plates set

Craft your own personalized Machined Olympic Plates Custom Set by choosing a minimum of 3 pairs, and get 10% off.

Precision Weight Plates, Machined to Perfection.

Weight is weight, right? Your plates should add weight to the bar; that’s their job; it’s not rocket science!

But what if I told you your sloppy, 45lb plates you got for your 16th birthday from the local big box store were lying to you? The process of casting molten hot iron into moulds can be fickle.

Cast plates manufactured without proper quality control protocols can have as much as 4lbs weight variance, meaning you might have 41lbs on one side of the bar and 48lbs on the other side; leaving you prone to injuries from imbalanced bars, or even worse, finding out at your competition that you are 10lbs weaker than you thought, and missing the gold medal!

Our new machined iron plates are cast in a specialty casting factory with over 40 years of experience, then finished on a lathe that shaves of excessive weight from the back of the plate, followed by polishing and machining edges for an even smoother, more aesthetic plate.

The machined plates are a guaranteed tolerance of +/- 1% for 45, 35, and 25 and +/- 3% for 10, 5, 2.5. However, in our strict quality control and inspection, most plates are under that tolerance, and many fall within 10 grams of the claimed weight.

But we don’t stop there; the holes of the plates are cast smaller than the Olympic bar sleeve diameter of 2 inch/50mm and is then drilled out with a guaranteed precision hole fit of 50.5mm +.4mm tolerance, meaning your plates fit snug and erect on your bar.

Finally, the plates are smoothed, and any excess dirt/dust is flamethrowered off before being finished with an ultra-durable hammertone powder coat.

This additional precision work makes for a more expensive (albeit worth it!) weight plate. If you’re looking for excellent quality but a less precise plate, be sure to check out our mighty grip iron plates.

Outfitting your commercial gym?
Customized plates with your brand’s logo on them are available for bulk orders.
 Contact Us 


Weight (lbs/kg)Weight Tolerance %Tolerance +/- GramsDiameter (+-.5mm tolerance)Thickness (in/mm)

5-Year Light Commercial Warranty against breakage. 

Customer Reviews
4.9 Based on 59 Reviews
5 ★
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Girish S.
Canada Canada

Great plates - 10 lb pairs

I needed some new plates for the loadable dumbbell (bought the industrial one from BoS itself), so ordered 2 pairs of 10 lb for starters to check the quality first. I must admit, I am surprised at the quality, precision and finish of these. They are very easy to slide on the dumbbell and my bar and are a snug fit, and the weight is pretty accurate. Very happy with the purchase (waiting for few more that I ordered) and will definitely would be ordering more later .

  • My Fitness Goal Is: Build strength and shape.

Bells of Steel

Hi Girish, Thanks for the great review! Happy to hear the Olympic weight plates exceeded your expectations! Can't wait for you to get the rest of your orders. Happy lifting! Irene and the B.o.S. Crew

Andrew P.

45lb. machines plates

Excellent quality.

  • My Fitness Goal Is: Strength and fitness

Bells of Steel

Glad you like them. Now make those gainz!

Zacharie Q.

45lb Machined Plates!

These are great plates. Delivered with no problems. I wish they came in bright orange with sparkles but grey is ok too.

  • My Fitness Goal Is: To move like Ido, to lift like Hatfthor, to hit like Ali, to run like Courtney DauWalter, to meditate like that happy old guy I saw once meditating in a park…he looked pretty chill.
Bells of Steel Machined Iron Olympic Weight Plates Review

Bells of Steel

Hi Zacharie, Thanks for the 5 star review! Happy to hear you are pleased with our B.o.S. machined plates. Maybe one day we will get colored plates! For now enjoy your gainz and feel like Hatfthor! Happy lifting! Irene and the B.o.S. Crew

Gordon M.
Canada Canada

Great Quality

These are great plates. Machined well. Fit so snugly on the bar for shorter movements you almost don’t need collars. Powder coat is high quality as well.

  • My Fitness Goal Is: Improve strength protect myself from injury as I lift a lot at work.

Pair of 45lb Machined Plates

Excelllent product. Arrived as described and very quickly. Would buy again.

  • My Fitness Goal Is: strength

Bells of Steel

Thanks for the 5 Star Review! Happy to hear you're liking your new plates. Happy lifting! Brandon and the B.o.S. Crew

5-Year Light Commercial Warranty
against breakage.