Cast Iron Gym Weight Plates
Kurt Foundry casts gym weight plates for fitness equipment brands, matched to your hub diameter and weight increments with a consistent finish plate after plate.
Consistent Weight, Plate After Plate
Fitness equipment brands need weight plates that stay accurate and consistent across an entire production run. Kurt Foundry casts gym weight plates to your hub diameter and weight increments, then finishes each plate to your product line spec.
Whether you need raw cast, painted, or rubber-coated plates, our team works from your drawing to keep every plate in the set balanced and repeatable.
What We Customize for You
Every order is cast to your specification, not pulled off a shelf. Here’s what we tailor to your exact application.
Weight Increment Accuracy
Each plate is cast and finished to your specified weight, with tight tolerances so full sets stay balanced and consistent.
Diameter & Profile
Plate diameter and thickness profile are cast to your product line drawing for a consistent look across your range.
Hub Diameter
Center hub hole is cast to your spec, whether standard 1-inch or Olympic 2-inch, for a clean fit on any compatible bar.
Finish Options
Raw cast, painted, or rubber-coated finish options are available to match your product line and reduce noise and floor wear.
Material Grades
Need ductile iron instead of grey? Compare both on our custom iron castings page.
Every gym weight plates order is cast in the material grade that fits your application and duty cycle.
| Standard / Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Typical Applications |
|---|---|---|---|---|
| ASTM A48 Class 30/40 (Gray Iron) | ≥ 207-276 | N/A (Brittle) | N/A | Standard gym weight plates for commercial and home fitness equipment. |
Where This Product Is Put to Work
Real-world applications our customers rely on.
Commercial Gym Equipment
Weight plates cast for commercial fitness equipment brands supplying gyms and training facilities.
Home Fitness Brands
Consistent, accurately-weighted plates for direct-to-consumer home gym equipment lines.
Private-Label Programs
Custom branding, finish, and weight increments for private-label fitness equipment programs.
How We Manufacture Your Custom Cast Iron Gym Weight Plates
Plates are cast, machined, finished, and weight-verified to deliver a consistent, durable product for gym-floor use.
1. Pattern & Mold Design
We design the pattern for your plate profile, logo recess, and hub bore, sized to your target weight.
2. Sand Molding & Pouring
Molds are poured in grey iron, chemistry-verified for consistent hardness and density.
3. Shakeout & Fettling
Castings are removed from the mold and gates, risers, and flash are ground smooth.
4. CNC Machining of the Hub Bore
The center hub bore is CNC-machined to your bar-diameter specification for a secure, wobble-free fit.
5. Surface Finishing
Plates receive powder-coat, paint, or rubber-encapsulation finishing per your specification for durability and floor protection.
6. Weight Tolerance Verification
Each plate is weighed on a calibrated scale to confirm it falls within your specified tolerance before packaging.
Quality Control for Gym Weight Plates
Every plate is verified for weight accuracy, finish quality, and dimensional fit before it ships.
- Certified Weight Verification:Each plate is weighed on a calibrated scale and checked against your target tolerance.
- Hub Bore Dimensional Check:Bore diameter is checked to confirm a secure fit on standard or Olympic bars.
- Finish & Coating Inspection:Powder-coat, paint, or rubber finish is inspected for coverage and adhesion before packaging.
- Material Test Reports (MTRs):Chemistry documentation is available on request for your QA records.
Worldwide Export Shipping — Direct from Foundry
Kurt Foundry exports to customers across North America, Europe, Southeast Asia, the Middle East, and Australia. We manage the entire logistics chain from our foundry floor to your receiving dock.
We offer flexible shipping terms including FOB, CIF, and DDP depending on your destination and preference — a single direct-factory price with full freight transparency.
All gym weight plates are packaged in ISPM-15 certified fumigated wooden crates with rust-preventative coating and internal blocking to prevent movement in transit.
Ocean Freight
We arrange full-container or LCL ocean freight from Qingdao to ports worldwide — USA, Canada, Europe, Southeast Asia, Middle East, and Australia.
Flexible Trade Terms
We support FOB, CIF, and DDP shipping terms. Choose the arrangement that fits your procurement process and import requirements.
Last-Mile Delivery
Under DDP terms, we arrange customs clearance and inland trucking directly to your facility — available for USA, Canada, and select European destinations.
Export Crating
All shipments use certified fumigated wooden crates with rust-preventative coating and full export documentation.
Why Choose Kurt Foundry for Gym Weight Plates
Cast, machined, and finished under one roof, engineered to hold the exact spec your application requires.
Accurate Weight Increments
Each plate is cast and finished to your specified weight, with tight tolerances so full sets stay balanced and consistent.
Standard or Olympic Hub Sizing
Hub diameter is cast to your spec, whether standard 1-inch or Olympic 2-inch, for a clean fit on any compatible bar.
Finish Options
Raw cast, painted, or rubber-coated finish options are available to match your product line and reduce noise and floor wear.
Frequently Asked Questions
We hold weight within a documented tolerance band and provide a certified scale ticket, so full sets stay balanced and consistent.
Yes, raw cast, painted, and rubber-coated finish options are all available to match your product line.
Yes, hub diameter is cast to your spec, whether standard 1-inch or Olympic 2-inch.
Yes, cast-in or stamped branding is available to your placement and format spec.
Lead times vary with quantity and finish requirements, but most orders ship within a few weeks of pattern approval.
Ready to Quote Your Cast Iron Gym Weight Plates?
Send us your drawing or sample and we’ll quote weight, lead time, and pricing within one business day.
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