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success_story | minute read

Optimizing Bottle Production

Kollmorgen Solution Catapults PET Bottle Blow Molding Machine to Top Producer in the World


A major bottling operation in China needed to substantially increase output in order to ensure future success in a highly competitive market. For the company’s all-electric linear PET bottle blow molding machine, productivity depends on the ability to quickly index PET preforms into position and then remove the resulting molded bottles. The company engaged Kollmorgen motion experts in early 2019 to help minimize the machine’s indexing time.

Working closely with the customer’s machine design team, Kollmorgen engineers discovered that the indexing performance requirements were overtaxing the existing motor/drive solution. The motor wasn’t able to achieve the desired indexing speed without overheating. The drive was unable to supply the necessary acceleration current and would quickly go into current foldback, further limiting the power needed to meet the desired indexing time.

The only way to prevent overheating and foldback in the existing motor/drive combination was to increase the indexing time – slowing the machine down to the point that bottle-production targets could not be met. While a larger motor might have solved the problem, the machine design was fixed and did not provide the additional space that would be needed.


Achieving faster indexing times would require more acceleration torque and lower overall inertia. Kollmorgen worked closely with the customer to evaluate the indexing goals and to co-engineer a solution that would deliver the desired machine performance improvements. A Kollmorgen 2G Motion System supplied the additional power needed to dramatically decrease index time while occupying the same space as the prior motor and drive design.


A simple, cost-effective upgrade to the 2G Motion System transformed the PET bottle blow molding machine and reinvigorated the customer’s business.

  • Motor torque increased by 30% without an increase in size.
  • Faster acceleration reduced the indexing time from 1.6 seconds to 1.3 seconds, a 23% improvement.
  • No machine modifications were required to fit the AKM2G servo motor onto the existing motor mount, saving the customer design and documentation time.
  • The machine now produces 156,000 bottles (600 ml) per hour, making it the #1 bottle producer in the world.

“This is what the 2G product was designed for —increasing the performance of our customer’s machine without taking away precious space for a larger drive and motor.” - Tom Kunkel, 2G Product Manager, Kollmorgen

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Ready to discover what the 2G Motion System can do for your machine?

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About Kollmorgen

Since its founding in 1916, Kollmorgen’s innovative solutions have brought big ideas to life, kept the world safer, and improved peoples’ lives. Today, its world-class knowledge of motion systems and components, automated guided vehicle navigation software, industry-leading quality, and deep expertise in linking and integrating standard and custom products continually delivers breakthrough motion solutions that are unmatched in performance, reliability, and ease of use. This gives machine builders around the world an irrefutable marketplace advantage and provides their customers with ultimate peace of mind.

AKM2G Servo Motor

AKM2G represents the latest evolution of the industry-leading AKM motor family. With significant torque increases in the same motor size OEMs can achieve substantial performance improvement without changing the motor mounting or using more machine space.

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AKD2G Servo Drive

Born from a rich AKD heritage, AKD2G is the latest servo drive technology adding:

  • Dual-axis technology for additional space savings
  • Built-in functional safety options via SafeMotion Monitor (including FSoE)
  • Color Graphic Display
  • Optimized for single-cable power and feedback
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Engineer the Exceptional

Learn how to engineer exceptional machines, robots and vehicles with the highest-performing, most reliable motors, drives, automation solutions and more.

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