About Us
Who we are
Manufacturing premium bearings, building a first-class brand
Jiangsu Dena Precision Bearings Co., Ltd., established in 2008, was formerly known as Changzhou Yaoguang Bearings Co., Ltd., which was founded in 1996. The company occupies a total area of over 14,000 square metres and currently employs more than 200 staff, including a technical team of 30. It has established a first-class laboratory in China and is a modern manufacturing enterprise specialising in the design, research and development, manufacture and sale of precision bearings. The company possesses state-of-the-art production equipment and specialised testing instruments, with products manufactured and quality-controlled in strict accordance with the IATF 16949 quality management system. The company’s technical team has many years of experience in the high-precision bearing industry and possesses extensive technical expertise in the fields of turntable bearings, cross-roller bearings, robot reducer bearings, angular contact bearings, deep-groove ball bearings and cylindrical roller bearings. Specifically, the precision grade of our turntable bearings is P2, whilst that of our cross-roller bearings is P4. The company’s products are primarily used in high-precision CNC turntables, machine tool spindles, direct-drive motors, industrial robots, aerospace, servo motors, hydraulic motors and automotive gearboxes. Dena boasts a strong research and development team; our customers’ needs are the driving force behind our efforts, and we share their concerns and anticipate their needs. The company has long been deeply committed to its products and markets, sparing no effort to make an indelible contribution to the domestic substitution of precision bearings in the high-end equipment manufacturing industry and to the refinement of the industry’s supply chain, whilst striving to become the industry leader in the precision bearing sector.
Why Choose Us
Powerful Manufacturing, Trusted Quality, Expert Engineering Support
With over 200 employees, a 14,000㎡ manufacturing facility and a mature IATF16949-compliant production system, we possess strong batch production capabilities. Our efficient production lines and professional testing instruments ensure timely delivery of high-quality precision bearings for large-volume orders.
Backed by the IATF16949 quality management system and first-class laboratory facilities, we ensure exceptional product consistency through stringent process control. Our sophisticated production equipment and professional testing instruments guarantee that every bearing delivers stable, reliable performance across all batches.
Our product portfolio spans a wide dimensional range, from miniature bearings for precision instruments to large-scale turntable bearings for heavy-duty equipment. This broad coverage enables us to meet diverse customer specifications across CNC machine tools, industrial robots, aerospace and automotive gearboxes with flexible, tailored solutions.
Evolving from a 1998-founded predecessor to today's Dena Precision Bearing, we bring over 25 years of deep expertise in high-precision bearings. Our technical team of 30 masters turntable, crossed roller, robot reducer, angular contact, deep groove and cylindrical roller bearings, achieving P2-P4 accuracy grades for aerospace, robotics and CNC applications.
Service Guarantee
When you need experience, we have it covered.
offering the highest quality of service, strict control of quality and fast production times.
01
Pre-sales service
Selection Guidance: We provide customers with free advice on bearing selection, recommending the most suitable type, model and clearance based on operating conditions (load type, rotational speed, ambient temperature, etc.)
Solution Design: We analyse customer requirements and operating environments to design product solutions tailored to the customer’s needs
Technical Exchange: We conduct technical exchanges and training on bearing applications
03
After-sales service
On-site Support: Upon request, we will dispatch professional after-sales service personnel free of charge to provide on-site guidance on installation and usage.
Quality Guarantee: We strictly adhere to the ‘Three Guarantees’ policy for product quality (return, replacement and warranty) until the customer is satisfied.
Rapid Response: We respond promptly to customer service requests; our service personnel will not leave the site until the issue is resolved and the customer is satisfied.
Regular Follow-ups: We conduct regular visits to customers to solicit feedback, understand product usage, and promptly identify and resolve any issues.
Technical Training: We provide customers with technical training on bearing installation, maintenance and servicing.
02
In-process service
Quality Assurance: We exercise strict control over material selection and strive for excellence at every stage of production; all bearings undergo comprehensive testing before leaving the factory.
On-time Delivery: We strictly adhere to delivery schedules to ensure products reach our customers on time.
Customisation Support: We offer customisation services for non-standard bearings; our technical team will assess feasibility and confirm the lead time.
04
Timeliness Commitment
Feedback on sales and service enquiries: within 0.5 hours
Feedback on quality and service enquiries: within 1 working day
On-site service provided: within 2 working days
Response to market issues: within 2 hours
honors
Patent for an Invention
Factory
Factory environment
