Technical articles from R+W Antriebselemente GmbH
Flexible and rigid Line Shafts, Spider, Servo and Shaft Couplings
for the Requirements
of the future
R+W offers you power transmission elements and any shaft coupling according to your requirement. Torque Limiters, Bellows Couplings, Miniature Couplings, Elastomer / Spider Couplings, Linear Couplings, Servo Couplings, Line and Jack Shafts. Torsion-proof, rigid and backlash-free Couplings, with highly elastic and torsional stiffness stainless steel Bellows. Flexible Couplings with Elastomer Ring. Coupling solutions for expolsive atmospheres and couplings for all demands. Resistant to wear and maintanance-free. Absolutely and permanently reliable.
Torsionally Rigid Shaft Couplings Enhance Servo PerformanceServo systems require mechanical components with a high torsional stiffness in order to perform properly in applications requiring rapid acceleration and deceleration of high inertia loads. Flexible couplings usually have the lowest torsional stiffness of any component in a motion system. Couplings are often selected based on factors other than torsional stiffness, often to the detriment of system performance. Proper servo coupling selection can pay off when considering the overall picture. More about torsionally rigid servo couplings.. |
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R+W has developed plastic shaft couplingsHigh-performance plastics revolutionize shaft coupling designEngineered plastics are receiving more and more attention in the fields of mechanical and plant engineering every day. Compared to conventional metals, the mechanical parameters and material properties of thermoplastics can be manipulated for optimal performance, or used to mimic the properties of metals at dramatically reduced cost. Designers and builders, recognizing the important advantages of thermoplastics, are increasingly integrating them into new and existing applications, and plastic components can now be found in a multitude of areas where metals would have been used exclusively a decade ago. More about the new Shaft Coupling-Generation - Elastomer / Spider / Jaw Couplings made of plastic... |
![]() High-performance plastics revolutionize shaft coupling design. |
Obsolescence of Keyways in Servo Motion SystemClamping collars for a compact coupling design... Tangential clamping collars more evenly distribute the stress associated with shaft locking and torque transmission. As demonstrated in Figure 1 the entire surface area in contact between the shaft and hub is utilized, as compared to the single face of a shaft key. This represents an average of a more than 10 x increase in torque related shaft-hub engagement when the surface area of one side of an ANSI standard square key is compared to its respective shaft circumference across the same hub fit length. More about shaft connections... |
![]() Clamping hub collars. |
R+W Couplings: The Most Compact Shaft Couplings on the MarketFor smooth running and a easy alignment...One of the general requirements in mechanical and plant engineering is increasingly reliable and compact components, capable of fitting into small installation spaces. Additionally, machine designers, as well as manufacturers of machine tools and industrial robots place considerably higher demands on precision shaft couplings. R+W has developed one of the most compact couplings on the market in order to meet these requirements. More about Elastomer / Spider / Jaw Couplings... |
![]() The most compact elastomer / spider coupling / jaw Coupling. |
New Backlash-Free Overload Protection with Torque Limiting ClutchesSafety Couplings and Torque Limiters Limit Liability...When considering the economic aspects of machine uptime in high volume manufacturing, avoiding torque overload in the event of malfunction is a continuous challenge. R+W has developed a complete line of torque limiters and torque limiting clutches as a highly cost-effective means of torque overload protection. The new generation of safety couplings and torque limiters from R+W is completely backlash-free, and offers the most compact design available. Zero backlash safety couplings and torque limiters have been designed for use in power transmission and servo applications. Important requirements, such as being backlash-free and having a short reaction time, as well as a long service life, have been implemented in the design. A key advantage is fast availability of an application after a crash. More torque overload couplings... |
![]() The new backlash-free overload protection: Torque Limiter with clamping hub |
The Next Generation of Flexible, Backlash-Free, Press-Fit Shaft CouplingsBellows Couplings for Quick Drive Assembly...Compact machine designs, restricted installation spaces, and quick and efficient component replacement for service and maintenance are a few factors to consider when choosing a coupling for use in power transmission and motion control applications. Due to the continued progress of automation, highly dynamic, controlled drives are integrated into the manufacturing process and reliable, user-friendly couplings are more a requirement than ever. Flexible, backlash-free shaft couplings and metal bellows couplings have proven to be versatile drive elements in mechanical engineering. With the BK5 series, R+W has further developed and perfected this precision coupling design concept. More information about steel Bellows Couplings... |
![]() All couplings are available with stainless steel bellows |
Overview:
more about the flexible, rigid and backlash
free Shaft Couplings and Torque
Limiting Couplings ![]()







