When precision engineering meets decades of hands-on experience, manufacturing facilities gain a powerful ally in maintaining productivity and competitiveness. At 宁波博劲机械制造有限公司, known globally as Bojin Machinery, we have spent over twenty years refining our expertise in comprehensive machine service, delivering solutions that keep production lines running at peak efficiency. Our team understands that every machining shop faces unique challenges, from aging equipment that no longer meets tolerances to the urgent need for advanced automation without the lead time of purchasing new machinery. By combining deep technical knowledge with strong OEM partnerships, we provide tailored solutions that extend the life of capital equipment while boosting performance. Our approach covers everything from complete machine tool rebuilding with industry-leading Fanuc and Siemens controls to specialized CNC retrofitting for gear shapers and grinders, as well as representing premium new equipment lines such as HAMAI and Burri. Throughout every project, we emphasize quality, reliability, and responsive support, ensuring our clients in industries ranging from automotive to aerospace can depend on their machinery day after day. Whether you operate a small precision job shop or a large-scale manufacturing facility, our goal is to be your trusted partner for all machine tool needs, backed by a proven track record of successful installations across the globe. For inquiries about how we can help your operation achieve greater precision and uptime, we invite you to reach out to our experienced team today.

Machine tool rebuilding represents one of the most cost-effective strategies for manufacturers seeking to restore older equipment to like-new condition or even surpass original performance specifications. At Bojin Machinery, we specialize in complete rebuilds that address every mechanical and electrical component, from spindles and ways to ball screws and lubrication systems. Our technicians perform rigorous disassembly, inspection, and replacement of worn parts, ensuring that the rebuilt machine meets or exceeds OEM tolerances. A critical part of our machine service involves integrating modern control systems, with Fanuc and Siemens being the two most requested platforms due to their reliability, wide support network, and advanced functionality. Upgrading to a Fanuc 0i or 31i series control, for example, provides enhanced processing speed, better servo tuning, and improved diagnostics that reduce downtime. Similarly, a Siemens SINUMERIK control offers flexibility for complex multi-axis machining and seamless integration with factory automation systems. Beyond control upgrades, we also retrofit or rebuild auxiliary systems such as hydraulic units, coolant systems, and chip conveyors, ensuring the entire machine operates as a cohesive unit. This holistic approach to machine repair and restoration delivers significant cost savings compared to purchasing new equipment, often at 40 to 60 percent of the replacement cost. Many of our clients in the automotive and heavy equipment sectors have extended the productive life of their machining centers, lathes, and grinding machines by ten or more years through our rebuilding programs. We also offer on-site assessment and consultation, helping plant engineers evaluate whether a rebuild is the right path for their specific equipment and production goals. By choosing our rebuilding services, manufacturers not only preserve capital but also gain access to the latest control technology and performance enhancements that improve part quality and cycle times.

Our rebuilding process is guided by a detailed engineering review that begins with understanding the client's production requirements and the specific challenges they face with their current equipment. Once the scope is defined, we create a customized work plan that includes sourcing OEM or equivalent-quality replacement parts, many of which we stock in our facility to minimize lead times. Mechanical rebuilding typically involves rescraping ways, replacing linear guides, reconditioning spindles, and installing new ball screws with preloaded nuts for zero-backlash performance. On the electrical side, we design and build new control cabinets with modern components, rewiring the entire machine to current standards and incorporating safety upgrades that comply with international regulations. Every rebuilt machine undergoes a rigorous run-off test at our facility, simulating production conditions to verify accuracy, repeatability, and cycle times before shipment. We also provide comprehensive documentation, including electrical schematics, maintenance manuals, and programming guides tailored to the new control system. Our team offers training for operators and maintenance personnel, ensuring a smooth transition and rapid return to full production. For manufacturers who rely on high-volume production, the ability to schedule a rebuild during planned downtime or seasonal lulls can be a strategic advantage, minimizing disruption while maximizing long-term value. The combination of mechanical precision restoration and modern control integration makes our rebuilding service a cornerstone of what a full-service machining shop should expect from a partner. Whether the machine is a vertical machining center, a horizontal boring mill, or a cylindrical grinder, Bojin has the expertise to deliver a result that feels like new but costs a fraction of the price.

Gear manufacturing is one of the most demanding applications in metalworking, requiring extreme precision in tooth profile, lead, and spacing to ensure quiet operation and long service life under high loads. As gear production requirements evolve toward tighter tolerances and more complex geometries, many manufacturers find that older gear shapers and grinders, while mechanically robust, lack the control capability to meet modern specifications. Bojin Machinery addresses this gap with specialized CNC retrofitting services designed specifically for gear cutting and grinding machines. By replacing outdated relay logic or early-generation NC controls with modern CNC systems from Fanuc, Siemens, or other trusted brands, we unlock significant improvements in positioning accuracy, contouring performance, and programmability. A gear shaper retrofit, for example, allows precise control of stroke position, feed rates, and cutter rotation, enabling the production of internal and external gears with consistent quality across long production runs. For gear grinders, CNC retrofitting brings the ability to implement continuous generating grinding, profile grinding, and other advanced techniques that achieve AGMA class 12 or higher quality levels. Our retrofits also include the integration of touch probes, in-process gauging, and adaptive control algorithms that automatically compensate for wheel wear or thermal growth, further enhancing process stability. Beyond the control upgrade, we often replace or upgrade servo drives, motors, and feedback devices such as resolvers or encoders to exploit the full capability of the new CNC. This level of modernization transforms a mechanically sound but technologically obsolete machine into a highly productive asset capable of competing with new equipment. Many of our clients in the gear manufacturing sector have reported cycle time reductions of 20 to 30 percent after retrofitting, along with significant reductions in scrap and rework. The investment in a retrofit is typically recovered within twelve to eighteen months through increased output and reduced tooling costs, making it an compelling option for budget-conscious operations.

The retrofitting process at Bojin begins with a thorough evaluation of the existing machine's mechanical condition, including spindle runout, table indexing accuracy, and slideway wear. Only machines with sound mechanical foundations are recommended for retrofit, ensuring the investment yields reliable results. Our engineering team then designs a control system architecture tailored to the specific machine type and production needs, selecting components that maximize performance while maintaining ease of use for operators. We develop custom PLC programs that handle all machine-specific functions, such as hydraulic clamping, coolant management, and safety interlocks, creating a seamless interface between the new control and the machine's existing peripherals. For gear shapers, we often implement electronic lead and helix control, eliminating the need for mechanical change gears and enabling quick changeover between different gear specifications. For grinders, we integrate dressing cycles, wheel balancing systems, and post-process measurement feedback to create a closed-loop production cell. Our team also focuses heavily on operator interface design, creating intuitive screens that simplify setup, monitoring, and troubleshooting. We provide comprehensive training tailored to the skill level of the client's workforce, ensuring that both experienced machinists and newer operators can quickly become proficient. After installation, we offer remote diagnostic support and software updates to keep the retrofit performing at its best over the long term. By choosing Bojin for your gear machine retrofitting needs, you gain access to decades of accumulated knowledge in both gear manufacturing and control system integration, a combination that is rare in the machine service industry. Our work helps machining shops retain the value of their heavy capital investments while adapting to changing market demands and quality standards.

While rebuilding and retrofitting are excellent strategies for many situations, some manufacturers require the latest technology, higher production volumes, or capabilities that cannot be achieved through upgrades alone. For these scenarios, Bojin Machinery proudly represents two world-class OEMs: HAMAI for high-precision gear hobbing machines and Burri for advanced gear grinding and finishing solutions. HAMAI, a Japanese manufacturer with a stellar reputation in the gear industry, produces CNC hobbing machines that deliver exceptional accuracy, rigidity, and cycle times for small to medium-sized gears. Their machines feature direct-drive work spindles, high-rigidity column structures, and advanced thermal compensation systems that maintain consistency even during extended production runs. For manufacturers producing automotive transmission gears, electric vehicle drivetrain components, or precision industrial gears, a HAMAI hobbing machine represents a significant step forward in productivity and quality. Burri, a German manufacturer, complements this offering with state-of-the-art gear grinding machines that utilize CBN (cubic boron nitride) grinding wheels for high-speed, high-accuracy finishing. Burri machines excel in generating grinding and profile grinding applications, achieving surface finishes and geometric tolerances that meet the most demanding international standards. The combination of HAMAI for roughing and Burri for finishing creates a complete gear manufacturing cell that can handle complex workpieces with minimal operator intervention. Both manufacturers share Bojin's commitment to quality, reliability, and long-term support, making them ideal partners for clients who require turnkey solutions backed by local expertise.

When we supply new HAMAI or Burri equipment, our involvement extends well beyond simply delivering the machine to your facility. We begin with a comprehensive needs analysis, helping you select the correct machine model, workholding, tooling, and automation options to match your production requirements. Our engineering team handles the complete installation, including foundation preparation, alignment, power connection, and integration with existing material handling systems. We also manage the commissioning process, running test parts to demonstrate that the machine achieves all specified tolerances and cycle times. For clients who require turnkey solutions, we can develop complete processes including part programming, tool selection, and inspection protocols. Our support continues throughout the machine's life with preventive maintenance programs, spare parts availability, and responsive field service to minimize unexpected downtime. For manufacturers exploring cnc cutting technologies or expanding their capabilities into new gear types, Bojin provides application engineering support to optimize cutting parameters and achieve the best possible results. We also maintain close relationships with HAMAI and Burri engineering teams, ensuring that any technical challenges are addressed promptly with the full resources of both the OEM and our own experienced staff. By choosing Bojin as your equipment partner, you benefit from our twenty-plus years of market knowledge, our ability to recommend the most appropriate technology for your specific application, and our commitment to your long-term success. Whether you are establishing a new machining shop or upgrading an existing one, our equipment solutions deliver the precision, productivity, and reliability that today's competitive manufacturing environment demands.

The foundation of Bojin Machinery's reputation rests on the quality of our support services and the strength of our partnerships with leading OEMs in the machine tool industry. Over two decades of operation, we have cultivated relationships with component suppliers, control system manufacturers, and machine builders that give us access to the latest technologies, genuine spare parts, and technical expertise. Our support infrastructure includes a well-stocked inventory of common wear parts for Fanuc and Siemens controls, as well as mechanical components such as bearings, seals, belts, and hydraulic elements. When a client faces an unexpected machine failure, our ability to quickly diagnose the problem and source the correct part can make the difference between hours of downtime and days of lost production. We offer both on-site and remote diagnostic services, with experienced technicians available to travel to your facility when needed. For routine maintenance, we provide scheduled service agreements that include inspections, adjustments, and proactive replacement of components with limited service life. Our commitment to quality is reflected in our workmanship standards, which follow ISO-aligned procedures for every rebuild, retrofit, and installation. Each project is documented with detailed reports and test results, and we stand behind our work with warranties that provide peace of mind. Clients who need machine repair services, whether emergency breakdowns or planned overhauls, benefit from our systematic approach that prioritizes root cause analysis over temporary fixes.

Our OEM partnerships extend beyond HAMAI and Burri to include strategic alliances with control system leaders such as Fanuc and Siemens, as well as suppliers of spindles, ball screws, and other critical components. These relationships enable us to offer competitive pricing, priority technical support, and access to engineering resources that smaller service providers cannot match. For example, our Fanuc partnership allows us to provide authorized control retrofits with genuine parts and software, ensuring compatibility and long-term supportability. Similarly, our Siemens collaboration means we can offer SINUMERIK upgrades with full access to their latest software features and drive technology. We also work closely with the company's own design and manufacturing teams at our facility in Ningbo, where we build custom automation solutions and integrate systems for specialized applications. This vertical integration gives us control over quality and lead times that few competitors can offer. For manufacturers seeking crane services for machine installation or heavy equipment relocation, we coordinate with trusted logistics partners to ensure safe and efficient handling of all equipment. Our holistic approach means that when you work with Bojin, you gain a single point of responsibility for everything from initial consultation through final acceptance and ongoing support. We believe that true partnership involves understanding your business goals, production challenges, and quality requirements, then delivering solutions that help you achieve measurable improvements in output, cost, and competitiveness. That belief is woven into every project we undertake, whether it is a simple repair or a multi-machine greenfield installation.

Our quality commitment is also reflected in our investment in training and continuous improvement within our own organization. Our technicians undergo regular training on new control systems, mechanical techniques, and safety practices, ensuring their skills remain at the forefront of the industry. We maintain a comprehensive quality management system that tracks every step of a project, from initial quotation to final signoff, with multiple inspection points to catch any issues before they reach the customer. For clients who rely on certified processes, we provide detailed documentation including dimensional inspection reports, electrical test results, and functional verification records. Our aftermarket support includes a help desk that handles phone and email inquiries during business hours, with escalation procedures for urgent situations that require immediate attention. We also publish technical articles and case studies on our News page to share knowledge and best practices with the broader manufacturing community. By fostering long-term relationships with our clients, many of whom have worked with us for over a decade, we demonstrate that quality is not just a slogan but a daily practice. If you are seeking a reliable partner for machine service, whether you need to find a welder near me for on-site fabrication work or require complete CNC cutting system integration, Bojin has the experience and resources to deliver exceptional results. Our dedication to quality and customer satisfaction has made us a trusted name in the industry, and we continue to invest in our capabilities to serve clients around the world.

In today's fast-paced manufacturing environment, the reliability and precision of your machine tools directly impact your ability to meet customer demands, control costs, and grow your business. Bojin Machinery offers a complete spectrum of machine services—from rebuilding and CNC retrofitting to new equipment supply and ongoing support—backed by over twenty years of hands-on experience and strong OEM partnerships. Our expertise with Fanuc and Siemens controls, our specialization in gear shaper and grinder retrofits, and our representation of HAMAI and Burri equipment provide clients with solutions that are both technically advanced and cost-effective. We understand that every operation is unique, and we take the time to listen, analyze, and recommend the approach that best fits your needs, whether that involves restoring a legacy machine to peak performance or investing in cutting-edge new technology. Our commitment to quality, responsive support, and continuous improvement ensures that your equipment stays productive and your operations run smoothly. We invite you to explore ourHome page to learn more about our company's history and capabilities, visit our Products page to browse our full range of rebuild and retrofit offerings, and check our News page for the latest updates and case studies. For detailed solutions specific to your application, our Solutions page provides technical insights and configuration examples, while our Company page offers a deeper look at our team and values. If you are interested in exploring partnership opportunities, including becoming a distributor or service affiliate, please visit our Agent Wanted page for more information. For direct inquiries about your specific machine service requirements, contact our team today and discover how Bojin can help you achieve greater precision, productivity, and profitability in every aspect of your manufacturing operation.