• National Engineering Company (NENCO)

Steel Bellows Coupling

National Engineering Company (NENCO) offers the new Primeflex Steel Bellows Couplings with innovative technology oriented towards future applications. In contrast to other plug-in bellows couplings, it can be dismantled safely without putting the steel bellows at risk even after longer operating times. The construction, structure and manufacturing quality of the steel bellows are the main factors for operational safety, reliability, service lifetime, misalignment capability and functional safety of the entire coupling. Further quality-influencing factors are the connection of the bellows to the hub components and the shaft-hub connections. They influence, for example, the transmittable torque and the coupling running characteristics decisively. The new Primeflex unites the collective know-how of one of the leading manufacturers for backlash-free shaft couplings. Mayr® Power Transmission has been developing and manufacturing such couplings for several decades. Thanks to its years of experience in the field, the company knows all the demands placed on electrical power transmission, and has developed new unique features to enhance reliability and facilitate operation. The backlash-free primeflex can be plugged in for easy installation and disassembly. It can be dismantled safely without putting the steel bellows at risk even after longer operating times. Herein lies one of the decisive technical advantages. On many other plug-in steel bellows couplings, there is a risk of damaging or even destroying the steel bellows when loosening the plug-in connection (tribo-corrosion effect on the conic hub). Primeflex features specific material and geometry to fix this problem. The extremely compact and high performance-density primeflex can be mounted easily onto the shafts via clamping or shrink disk connections. Three sizes are offered currently, with nominal torques from 24 to 120 Nm.