DONGRUN specialises in delivering high-quality sand casting solutions tailored to the specific needs of robot manufacturers. Using advanced techniques and state-of-the-art equipment, we produce precise, durable, and fully customisable components that meet the demanding performance requirements of modern robotics.
With our fully automatic sand casting line dedicated to aluminium products, we serve as a reliable partner for both low- and high-volume production — from small intricate parts to large structural components.
Our proven expertise in complex geometries enables the creation of highly detailed, high-performance parts that are essential to advanced robotic systems. The combination of excellent surface quality and design flexibility makes our sand casting process an ideal choice for the robotics industry.
Partner with DONGRUN to improve component quality, optimise your designs, and unlock the full potential of your robots. Discover the advantages of precision sand casting and add real value to your robotic solutions with our specialist expertise.

Key Benefits of Sand Casting for Robotics
Design Flexibility
Sand casting offers virtually unlimited design freedom. Unlike die casting, it imposes no practical limits on part size and enables complex internal geometries without the restrictions of draft angles.
Rapid Prototyping & Low-Volume Production
Highly cost-effective for prototypes and small to medium production runs, as it eliminates the need for expensive, long-lead-time permanent molds.
Weight Optimisation
Material can be placed exactly where it is needed, resulting in stiffer, lighter robot arms that reduce energy consumption and enable higher operating speeds.
Material Versatility
Easily cast a wide range of materials, including aluminium, spheroidal graphite (ductile) iron, and custom alloys specifically tailored to the mechanical demands of each robot axis and joint.
Why Sand Casting is the Ideal Choice for the Robotics Industry
Fast Turnaround
We optimise our production processes to deliver short lead times without compromising quality. Depending on part geometry, we can achieve lead times as short as 8 weeks from order to first sample.
Virtually Unlimited Component Size
Our fully automated sand casting line can produce large parts up to 1.80 × 1.20 metres, significantly reducing cost and expanding design possibilities. In addition, we operate multiple smaller casting lines, allowing us to select the optimal box size for every component — from small precision parts to large structural elements.
High-Tech Manufacturing Process
Using advanced moulding techniques, we achieve excellent surface finish and tight dimensional accuracy. Final assembly takes place in a climate-controlled clean room, ensuring your sand-cast components are delivered ready for installation.
Precision Sand Casting for Robots & Cobots
DONGRUN combines deep expertise with complex casting simulations to identify and resolve potential issues before the first pour. This results in high-quality, durable, and lightweight components specifically tailored to the rigorous demands of robotic applications.
With sand casting, you benefit from superior design flexibility, cost efficiency, and the ability to create complex geometries and large parts. The outcome: robust, reliable, and lightweight components that enhance robot performance, reduce energy consumption, and increase longevity — helping you stay ahead in a competitive industry.
Trust DONGRUN to deliver sand-cast solutions you can rely on.

Dongrun Casting has 20000 square meters of facility houses and 200 production & test equipment, From quotation and tooling design to casting and finished machining, we can work with you at every stage. We serve a wide range of industries-from Fortune 500 corporations to small and midsize OEMs. Our products include Automotive&trucking, Electric Utility & Communications, Metering Systems, the Hydraulic Industry, Medical Devices, Lighting, Fuel and Gas Pressure, and Furniture parts.
More Details: www.dongruncasting.com