How to distinguish the pros and cons of plum coupling

How should the quality of plum coupling be distinguished?

The plum blossom coupling is composed of three parts, that is, it is composed of two half joints and a plum blossom elastomer in the middle. The material is mainly 45# round steel, cast steel, and forged steel. There are relatively few cast irons. The production process It is also very simple. First use the machine tool for processing, then the milling machine for milling claws, then the key slot, then surface treatment, grinding and polishing, and finally boiling black treatment. How should the quality of plum coupling be distinguished? I will explain it in detail next.

The plum blossom coupling has the following characteristics: the plum blossom elastic coupling has simple structure, small radial size, light weight, and small moment of inertia. It is suitable for medium and high speed applications. The plum blossom elastic coupling is stable and reliable, and has good vibration reduction. , Buffer and electrical insulation properties. The quincunx elastic coupling has large axial, radial and angular compensation capabilities. The quincunx elastic coupling has high-strength polyurethane elastic elements that are wear-resistant and oil-resistant, have large bearing capacity, long service life, and are safe and reliable. No need for lubrication, low maintenance workload, continuous long-term operation.

Plum blossom couplings generally have basic types, single flange connection type, double flange connection type, and brake wheel type. The ML type is the basic type and is the most commonly used. The quincunx-shaped elastic coupling uses polyurethane elastomer in the middle, and the two ends are half couplings with claws, also known as claw couplings. There are two, three, and four claws. Five-claw, six-claw, elastic petals are four-petal, six-petal, eight-petal, ten-petal, and twelve-petal.

The plum blossom coupling has good balance performance and is suitable for high-speed applications (up to 30,000 revolutions per minute), but it cannot handle large deviations, especially axial deviations. Larger eccentricity and deflection angle will produce larger bearing load than other servo couplings. Another value of concern is the failure of the plum blossom coupling. Once the quincunx elastic spacer is damaged or fails, the torque transmission will not be interrupted, and the metal claws of the two shaft sleeves mesh together to continue to transmit the torque, which may cause problems in the system.

Plum coupling elastomers are generally composed of engineering plastics or rubber. The life of the coupling is also the life of the elastic. Since elasticity is under pressure, it is obviously under tension. The life of the general elastic body is 10 years. Because the elasticity has the function of buffering and damping, it is used more in the occasion of strong vibration. The performance limit temperature of the elastomer determines the operating temperature of the coupling, which is generally -35 to +80 degrees.

A professional manufacturer of plum-shaped elastic couplings mainly consists of two protruding teeth that are closely meshed and subjected to radial compression to transmit torque. When the two axes are relatively offset, the elastic element undergoes corresponding elastic deformation to automatically compensate. Plum-shaped flexible couplings are mainly suitable for frequent starting, forward and reverse rotation, medium and high speed, medium torque and high reliability work occasions, such as: metallurgy, mining, petroleum, chemical, lifting, transportation, light industry, textile, Related parameters of ML plum blossom couplings such as water pumps and fans: specifications: ML1-13, nominal torque: 25-12500, allowable speed: 8500-1500 r/m, shaft hole diameter: 12-140 mm, shaft hole Length: 25-302mm, outer diameter: 50-400mm, standard number: GB5272-2002, weight: 0.7-165kg.

Plum blossom coupling material: 45# round steel, cast steel, forged steel. Choosing the appropriate plum elastic spacer material according to the actual application is a major advantage of this coupling. The coupling manufacturer-okplazas.com can provide plum spacers of various elastic materials with different hardness and temperature resistance, allowing customers to choose Appropriate materials meet performance standards for practical applications. When the maximum outer circle of the coupling is around 220, it is more appropriate to use round steel, which basically does not waste material. When the outer circle reaches 280 or 300mm, forged steel or cast steel is more suitable. If you choose the two, we still recommend forged steel.