Product characteristics
• Backlash-free, torsionally stiff and maintenance-free steel lamina coupling
• Wear-free
• High displacement figures
• Nominal torque up to 280,000 Nm
• Operating range up to 280° C
• Double-cardanic design
• Standard range up to shaft diameter 400 mm
Coupling description
RIGIFLEX®-N couplings are used on such applications which require a reliable and maintenance-free torque 
transmission with shaft displacement at the same time.
RIGIFLEX®-N was developed for pump drives in particular. This coupling system corresponds to the regulations 
of API 610 and may be supplied in accordance with API 671 optionally. (API = American Petroleum Institute)
Torques from 240 Nm to 280.000 Nm are available in 15 sizes for an optimum adjustment to the different applications.
Click on image to enlarge

API 610 and API 671

 RIGIFLEX®-N corresponds to the specifications of the API  610 standard 
 and can optionally be supplied in accordance with the API  671 standard.
 RIGIFLEX®-N is designed for average and heavy operating  conditions in the 
 pump industry. It is used on process pumps, boiler feed  pumps, 
 pipeline pumps of chemistry and petrochemistry. 
 RIGIFLEX®-N is furthermore suitable for applications in the marine and 
 compressor industry.