Custom cast iron flywheel
Our custom cast iron flywheels are engineered to deliver consistent rotational inertia and smooth power transmission for engines, compressors, and industrial machinery. Manufactured from high-grade grey iron and ductile iron using the sand casting process, each flywheel is precision-machined to your exact drawing specifications, including bore diameter, keyway dimensions, spoke configuration, and outer diameter. OEM and ODM orders are supported with flexible MOQ and sample production available before mass order commitment.
*Provide your application requirements—such as stress conditions, materials, size range, and even product name. We are always available for customization, so please contact us directly.
Introduction
Why Choose Our Cast Iron Flywheels?
Precision Keyway & Bore Machining — Each flywheel hub is CNC-machined to your exact bore and keyway specifications, ensuring precise shaft fit and reliable torque transmission with zero slippage under load.
3-Spoke & Custom Spoke Design — Standard 3-spoke configuration available for optimal weight-to-inertia ratio, with custom spoke count, profile, and thickness available based on your engineering drawing.
Grey Iron & Ductile Iron Options — Grey iron provides excellent vibration dampening and cost efficiency for standard engine applications, while ductile iron offers higher tensile strength and impact resistance for heavy-duty industrial use.
Sand Casting with CNC Finishing — Our sand casting process allows complex flywheel geometries at competitive cost, with CNC machining on all critical mating surfaces to ensure dimensional accuracy and dynamic balance.
Dynamic Balancing Available — Static and dynamic balancing service available to minimize vibration at high rotational speeds, critical for precision engine and compressor applications.
Specifications
Attribute Value Attribute Value Material Ductile Iron / Grey Iron Process Sand Casting Application Industrial Machinery, Engines, Compressors Surface Treatment Shot Blasting / Machining Available Model Number OEM / Custom Dimensions Customized per Drawing Tolerance Per Customer’s Drawing Request Weight Range 0.5 kg – 500 kg (Customizable) Service OEM / ODM MOQ 1 Piece (Sample Order Accepted) Certification ISO 9001 Quality Control 100% Inspection / CMM Available Lead Time 15–30 Days (Based on Quantity) Payment Terms T/T, L/C, PayPal
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I don't have complete drawings, can I send inquiry?
Yes, we can help you analyze based on your description, samples and photos.
I am not sure if you can do my parts?
Most of our customers come to us because “others say they can’t do it”.
Are you a factory or a trader?
We are a factory and have a project management team that can handle the technology, cost and delivery at the same time.
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