German RS/CI 100 coupling, RS/CI 100 model, RS/CI 100 price

RS/CI 100 coupling connects several sets of diaphragms (stainless steel thin plates) to the two half-couplings with bolts in an alternating manner. Each set of diaphragms consists of multiple stacked layers. Diaphragms are categorized into link-type and one-piece types of various shapes. The diaphragm coupling compensates for the relative displacement of the two connected shafts through the elastic deformation of the diaphragms. It is a high-performance flexible metallic element coupling that requires no lubrication, features a compact structure, high strength, long service life, and no rotational backlash. It is unaffected by temperature or oil contamination, offers acid, alkali, and corrosion resistance, and is suitable for shaft drive systems in operating environments with high temperature, high speed, and corrosive media.

RS/CI 100 coupling manufacturing process

Jaw couplings are machined using turning, milling, and broaching, followed by overall heat treatment to ensure sufficient mechanical strength. Another type of jaw hub on the market is cast, allowing for mass production and eliminating machining losses, resulting in a much lower price than machined versions. However, cast components have inferior performance and are best avoided in critical applications. Cast jaws are prone to tooth breakage (jaw tooth detachment) under high speed or high load. 1) Compact, zero-backlash, available with three different hardness elastomers; 2) Absorbs vibration, compensates for radial and angular misalignment; 3) Simple structure, easy maintenance and inspection; 4) Maintenance-free, oil-resistant, electrically insulating, operating temperature 20℃ to 60℃; 5) Jaw elastomers available in four, six, eight, and ten lobes; 6) Fixing methods include set screw, clamping, and keyway fixation.

RS/CI 100 coupling features

Elastomers are typically made of engineering plastics or rubber. The coupling's service life is determined by the elastomer's life. Since elastomers are subjected to compression rather than tension, their typical service life is 10 years. Due to their cushioning and vibration-damping properties, they are widely used in applications with strong vibrations. The performance limit temperature of the elastomer determines the coupling's operating temperature, generally ranging from -35 to +80 degrees. Jaw couplings feature a simple structure, require no lubrication, are easy to maintain and inspect, are maintenance-free, and can operate continuously for long periods. High-strength polyurethane elastomeric elements are wear-resistant, oil-resistant, have high load capacity, long service life, and are safe and reliable. They offer stable and reliable operation with good vibration damping, cushioning, and electrical insulation properties. They provide significant axial, radial, and angular compensation capabilities. With a simple structure, small radial dimensions, light weight, and low moment of inertia, they are suitable for medium to high-speed applications. Structural features: 1) Central elastomer connection. 2) Absorbs vibration and compensates for radial, angular, and axial misalignment. 3) Oil-resistant and electrically insulating. 4) Identical clockwise and counter-clockwise rotational characteristics. 5) Set screw fixation.

RS/CI 100 coupling selection

Jaw couplings mainly come in two types: the traditional straight-jaw type and the curved (concave) jaw zero-backlash coupling. Traditional straight-jaw jaw couplings are not suitable for high-precision servo drive applications. Zero-backlash jaw couplings evolved from the straight-jaw type but are designed specifically for servo systems, commonly connecting servo motors, stepper motors, and ball screws. The curved design reduces deformation of the elastic jaw spider and limits the effect of centrifugal force during high-speed operation. A zero-backlash jaw coupling consists of two metal hubs (typically aluminum alloy, stainless steel also available) and a jaw elastomer spider. The jaw elastomer spider has multiple lobe branches. Like a slider coupling, it achieves fit between the spider and the hubs on both sides through compression, ensuring zero-backlash performance. Unlike slider couplings, which transmit torque via shear forces, jaw couplings transmit torque through compression. When using zero-backlash jaw couplings, users must ensure they do not exceed the manufacturer's specified maximum load capacity for the elastomeric element (while maintaining zero backlash). Otherwise, the jaw elastomer spider will be compressed, deformed, lose elasticity, and preload will disappear, leading to loss of zero-backlash performance, potentially causing serious issues that may only be discovered later. Jaw couplings offer excellent balance and are suitable for high-speed applications (maximum speed up to 30000 rpm), but cannot handle large misalignments, especially axial misalignment. Larger eccentricity and angular misalignment generate higher bearing loads compared to other servo couplings. Another important consideration is jaw coupling failure. If the jaw elastomer spider is damaged or fails, torque transmission is not interrupted; the metal jaws of the two hubs engage and continue to transmit torque, which may cause system problems. Selecting the appropriate jaw elastomer spider material based on actual application is a major advantage of this coupling. Some automation equipment companies offer jaw spiders in various elastomeric materials with different hardness and temperature ratings, allowing customers to choose materials that meet actual application performance standards.

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