Ishibashi Tests Wind Gearboxes with PULSE

DENMARK - Japan's largest wind turbine gearbox manufacturer Ishibashi faces a familiar challenge in manufacturing wind turbine gearboxes - ensuring the reliability and longevity that is critical to their customer's return on investment.

At the core of Ishibashi's testing procedure is Brüel & Kjær's PULSE analyzer and - following the acquisition of their first system in 1998 - the company now has four PULSE systems in Japan and an additional one in their Chinese facility.

Ishibashi accommodates requirements from customers such as Mitsubishi Heavy Industry, and focuses on developing solutions with their customers. This new focus brought the need for new equipment, leading to an investment in their first PULSE system from Brüel & Kjær.

Other Brüel & Kjær instruments typically used are triaxial accelerometers and a sound intensity probe, with Brüel & Kjær accelerometers and microphones used exclusively. PULSE hardware and software is used for research and design - and also records other important parameters, including oil temperature and pressure.

Ishibashi has already started diversifying with a joint venture company in China and has established a company in the US for servicing wind turbine gearboxes. In the near future they want to expand into other Asian countries on the basis of establishing joint ventures and subsidiary companies.

Ishibashi was founded in 1932 as a forging plant and began producing gearing in 1958. A joint venture with the German Flender group in 1989 became Flender Ishibashi, which led to active technical transfer in the group for about 12 years.

The full case study can be viewed at:

About Brüel & Kjær

Brüel & Kjær is a world-leading manufacturer and supplier of sound and vibration measurement systems. Brüel & Kjær helps its customers measure and manage the quality of sound and vibration in their products and in the environment. Focus areas are aerospace, space, defence, automotive, ground transportation, airport environment, urban environment, telecom, and audio.

Brüel & Kjær has an unparalleled portfolio of sound and vibration equipment, and is a renowned deliverer of innovative instrumentation, including sound level meters, microphones, accelerometers, conditioning amplifiers, calibrators, noise and vibration analysers and software. To see the full range of products and systems, please visit

Brüel & Kjær also runs a variety of training courses, from basic introductions to noise and its effects to more specialised classes teaching customers how to get the most out of their equipment. Free, online training courses - conducted by our expert engineers - run throughout the year too. For all course registration details visit

Brüel & Kjær is a subsidiary of UK-based Spectris plc ( which has annual sales of £1.1bn and employs around 7,500 people worldwide across its four business segments

For additional information please contact:

Heather Wilkins

Marketing Coordinator

Bruel & Kjaer

Telephone: 01223 389 800



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