1. Turn-Mill Composite Electric Spindle

        Years ago, when turn-mill machine tools were just starting to develop in China, a professional machining center manufacturer was developing a machine to replace imported turn-mill centers. High-precision, high-speed electric spindles were a critical component. The customer initially decided to use spindles imported directly from Germany or Switzerland. However, since they only needed 1-2 spindles for prototype development, quotes from other Swiss and German spindle suppliers were very expensive with long lead times. Additionally, due to intellectual property considerations, the Chinese customer could not simply copy foreign equipment and spindles — some local modifications were needed. Other European spindle manufacturers were unwilling to make modifications and only wanted to sell their standard products. This put the customer in a difficult position.
        We worked closely with our Swiss headquarters to understand the customer's specific requirements, and ultimately customized an electric spindle that met their needs, with both cost and delivery time within the customer's expectations. This spindle has been in continuous operation for nearly a decade and is still running reliably today!

 

2. Internal and External Cylindrical Grinding Electric Spindle

        A well-known domestic grinding machine manufacturer won a national key R&D project to develop a composite grinding machine that could replace European imports. One machine included several sets of electric spindles: external cylindrical grinding, face grinding, high-speed internal grinding, and dressing spindles. The internal grinding spindle required very high speeds and needed an oil-air lubrication system. Based on the customer's needs, our Renaud engineers worked closely with the customer's design team to develop a complete spindle system solution including high-precision external grinding spindles, high-precision face grinding spindles, high-speed high-precision internal grinding spindles, oil-air lubrication systems, and high-precision inverters. We won the final bid based on our excellent product quality, professional and efficient service, and competitive pricing.
            After delivery, we worked closely with the customer to assist with on-site installation and commissioning, ensuring the machine met all design specifications. The equipment has been running for several years and is still performing excellently.

     
                       

 

3. High-Speed Test Motor

        A major domestic military enterprise was developing an aviation oil pump seal test bench and needed a high-speed, high-precision drive motor. Standard motors only run at a few thousand RPM, which could not meet the customer's requirements, and the precision was far from sufficient. Professional imported electric spindles could meet the speed, power, and precision requirements, but the customer's test motor had custom dimensions and shaft output requirements that differed from standard spindles, requiring customization. However, most European spindle manufacturers were unwilling to customize for small batch orders. We communicated the customer's needs to our Swiss headquarters, who developed a tailored solution. In the end, we not only delivered a high-speed motor that met all requirements, but also provided installation, operation, and maintenance recommendations based on the customer's specific application conditions, perfectly solving their problem!