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Plastic injection molding manufacturer - Taiyo Technology Singapore
Success Story

Save 50% inspection time for bearing manufacturing with ZEISS MMZ G

High-precision measurement for large components in wind energy sector
26 January 2026

How is ZEISS CMM applied in CS Bearing's manufacturing processes?

In the energy industry, large mechanical components must meet strict requirements for precision, safety, and production efficiency at the same time. As international standards tighten and audit processes become more rigorous, manufacturers are under growing pressure to ensure reliable and consistent quality control. At CS Bearing, inspecting large-sized gears was both time-consuming and challenging in terms of maintaining data consistency. To address this, ZEISS worked closely with CS Bearing to implement a high-precision measurement solution. The result was a reduction in inspection time of up to 50%, along with a significant improvement in the reliability of measurement data. This has helped establish a strong foundation for operational efficiency and long-term competitiveness in a demanding global market.

  • ZEISS MMZ G reliable for inspecting large components

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CS Bearing’s commitment to quality and the challenges of precision measurement

CS Bearing is a South Korean manufacturer specializing in industrial bearings for the energy sector. Its products are characterized by their large size and heavy weight, with many components reaching diameters of up to 6 meters and weighing close to 10 tons. These characteristics place exceptionally high demands on measurement accuracy and long-term stability throughout the product lifecycle.

Before implementing ZEISS solutions, CS Bearing faced significant challenges in inspecting such large-scale components. Manual measurement methods and conventional inspection systems struggled to handle large parts effectively, delivered inconsistent accuracy, and made it difficult to directly compare measurement results with CAD 3D models. Due to the size and weight of the components, inspecting a single bearing manually could take between 7 and 8 hours, consuming substantial manpower and significantly limiting overall production efficiency.

Beyond efficiency constraints, the precision requirements for bearings used in energy applications are particularly stringent. In energy systems such as wind turbines, bearings play a critical role in carrying high loads and ensuring stable motion over long operating periods. A modern wind turbine with a rated output of around 5 megawatts can generate millions of kilowatt hours of electricity each year, supplying power to thousands of households. Any deviation in bearing quality can disrupt power generation, cause economic losses, affect grid stability, and in rare cases pose safety or environmental risks.

For this reason, high-precision bearings are essential to ensure the performance and longevity of energy systems. Only components that are measured and verified with a high degree of accuracy can withstand heavy loads and operate reliably under demanding conditions.

The implementation of the ZEISS MMZ G coordinate measuring machine has significantly improved this situation at CS Bearing. Inspection time for a large bearing has been reduced from 7 to 8 hours to approximately 3 to 4 hours, nearly doubling productivity while ensuring a high level of accuracy and consistency in measurement data.

ZEISS MMZ G - Quality assurance and reliability for large industrial components

To address the measurement challenges described above, CS Bearing sought a coordinate measuring system capable of handling large-scale components while maintaining a high level of accuracy and stability. After careful evaluation, the company selected ZEISS MMZ G, a CMM solution specifically designed for large and geometrically complex parts, meeting requirements for measurement range, precision, and operational reliability.

ZEISS MMZ G offers the largest measuring volume within the ZEISS CMM portfolio, enabling direct measurement of large components without the need for part repositioning or segmented inspection. The system delivers a length measurement error starting from 2.2 + L/400 µm, combined with a single-point probing error of the sensor from as low as 2.0 µm, ensuring high accuracy and repeatability even in complex measurement routines.

With integrated VAST navigator technology, ZEISS MMZ G enables efficient measurement by optimizing probing speed while maintaining data reliability. Its stable mechanical design and precise guiding system ensure smooth measurement processes, making the system well suited for both laboratory environments and production-related applications.

CS Bearing’s vision is to produce bearings that are truly precise and absolutely reliable. And when we think about absolute precision and reliability, ZEISS CMM systems are the first that come to mind.

Vu Dinh Nam Quality Assurance Manager, CS Bearing Vietnam

Optimizing inspection operations and raising quality standards

Following the implementation of ZEISS MMZ G, CS Bearing reduced inspection time by up to 50% compared to previous processes, while significantly improving the accuracy and consistency of measurement data. The ability to directly compare measurement results with CAD 3D models allows the engineering team to quickly identify deviations, shorten adjustment loops, and improve overall operational efficiency.

Mr. Tran Van Hai, CMM Team Leader at CS Bearing, added: “100% of our products are inspected using the ZEISS MMZ G before being released to the market. After installing this system, all inspections are fully automated. We simply place the component on the measuring table, and the machine runs the entire measurement cycle automatically. All measurement data is stored permanently, providing clear and transparent traceability.”

CS Bearing Media Gallery

Long-term value for the Power & Energy industry

The partnership between ZEISS and CS Bearing highlights the role of high-precision measurement as a strategic foundation in the energy industry. Beyond optimizing operational efficiency, ZEISS solutions help build market confidence, support compliance with international standards, and strengthen global competitiveness.

Over the past 5 years, CS Bearing has continuously raised its quality standards, optimized processes, and controlled accuracy down to the micrometer level. Supported by advanced measurement systems from ZEISS, the company’s bearings meet the highest international market requirements and continue to reinforce CS Bearing’s position within the global energy industry.

CS Bearing

CS Bearing is a South Korean company specialized in manufacturing Pitch & Yaw bearing of wind turbine, capable of the entire manufacturing process such as Turning, Boring, Drilling, Gear Cutting and Heat-treatment, and also have wide product design capability by R&D team with systematic Quality Assurance process. CS Bearing has the head office at Gyeongnam (Hàn Quốc) and a factory at Ho Chi Minh City (Vietnam).

csbrg.com

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