Here is a list of some of the most well-known leading global suppliers of rotary pneumatic cylinders:

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Leading Global Suppliers of Rotary Pneumatic Cylinders

1. SMC Corporation

   • Headquarters: Japan
   • Overview: A leading manufacturer of pneumatic and control equipment, SMC offers a wide range of rotary actuators.

2. Festo AG & Co. KG

   • Headquarters: Germany
   • Overview: Festo specializes in automation technology and equipment, including innovative rotary actuators and cylinders.

3. Parker Hannifin Corporation

   • Headquarters: United States
   • Overview: Parker offers a broad array of motion control technologies, including pneumatic cylinders designed for various applications.

4. Bonomi Group

   • Headquarters: Italy
   • Overview: A global supplier of valves and actuators, Bonomi provides rotary pneumatic actuators in its diverse product line.

5. Norgren (part of IMI Precision Engineering)

   • Headquarters: United Kingdom
   • Overview: Norgren manufactures motion and fluid control technologies, including rotary pneumatic cylinders.

6. Aignep S.p.A.

   • Headquarters: Italy
   • Overview: Aignep specializes in pneumatic components and systems, offering a range of rotary actuators for various applications.

7. Tsubaki Nakashima Co., Ltd.

   • Headquarters: Japan
   • Overview: Tsubaki provides a variety of motion control products, including specialized rotary pneumatic cylinders.

8. Bimba Manufacturing Company

   • Headquarters: United States
   • Overview: Bimba is known for its innovative pneumatic products, including rotary actuators and cylinders.

9. Cameron (part of Schlumberger)

   • Headquarters: United States
   • Overview: Although primarily known for valve and control solutions, Cameron also manufactures pneumatic actuators for various applications.

10. Dorner Mfg. Corp.

    • Headquarters: United States
    • Overview: While Dorner is mainly a conveyor systems manufacturer, they also produce rotary pneumatic solutions tied to automated systems. ```

These companies are recognized for their quality, innovation, and extensive range of products in the rotary pneumatic cylinder market.