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Product Overview and Definition of Flexible Claw Coupling
Polyurethane elastic spider flexible shaft coupling, often simply referred to as "plum blossom coupling" or "claw coupling", is a widely used all-weather, high-performance flexible coupling. Its core feature lies in the use of an elastic body made of polyurethane (PU) material. Due to its shape resembling multiple claws of a spider, it is named "elastic spider" or "plum blossom pad".
It is mainly used to connect two transmission shafts. While transmitting torque and motion, it compensates for various centering errors, absorbs vibration and shock loads, protects the equipment on the driving side (such as motors) and the driven side (such as pumps and fans), and ensures the smooth and reliable operation of the transmission system.
Structure and components of Flexible Claw Coupling
This type of coupling is mainly composed of three parts:
1.Two metal Hub discs (Hub) : Usually made of aluminum alloy (lightweight, anti-corrosion) or high-quality steel (high torque). Each hub disk has several "claws" or "teeth", and is equipped with shaft holes and keyways (or clamping screws) for the fixed connection of the drive shaft and the driven shaft.
2.A polyurethane elastomer (Spider) : This is the core functional component of the coupling. Its shape is a multi-claw star-shaped structure, precisely embedded between the claw teeth of the two metal hub discs. It serves as an intermediate medium, transmitting torque and providing flexible compensation.
Operating Principle of Flexible Claw Coupling
When the motor starts and transmits torque:
1.The metal hub disk on the drive side squeezes the polyurethane spider through its claw teeth.
2.The polyurethane spider undergoes elastic deformation, transmitting force to the hub disk claw teeth on the driven side.
3.During this process, the elasticity of polyurethane materials can:
Compensation deviation: Adapt to the radial, angular and axial deviations between the two axes through its own deformation.
Buffering and shock absorption: Absorb the vibration and instantaneous impact load generated during operation to prevent damage to the equipment caused by rigid impact.
Electrical insulation: Polyurethane material is an excellent insulator that can block stray currents between two shafts and prevent electrical corrosion.
Core features and advantages of Flexible Claw Coupling
1.High elasticity and shock absorption: Polyurethane materials have excellent elasticity, wear resistance and tear resistance, which can effectively dampen vibration and ensure smooth transmission.
2.Strong ability to compensate for centering errors: It can simultaneously compensate for radial, angular and a small amount of axial deviations, reducing the precision requirements for installation centering and saving installation time and costs.
3.Maintenance-free and long service life: No lubrication required, simple structure, polyurethane spider is oil-resistant, ozone-resistant and aging-resistant, with a long working life. When replacing, only the elastic spider needs to be replaced, and the maintenance cost is extremely low.
4.Electrical insulation: Pre
vents current from passing through couplings and protects components such as bearings.
5.Torsional flexibility: It provides a certain degr
ee of torsional flexibility, which helps to alleviate torsional vibration during startup or load changes.
6.Low cost and high cost performance: Compared with gear couplings, membrane couplings, etc., its manufacturing cost and procurement cost are more advantageous.
7.Easy to install: Compact structure, light weight (especially the aluminum hub), and very convenient for installation and disassembly.
Main application fields of Flexible Claw Coupling
Due to its excellent performance, the plum blossom coupling is almost applicable to all general industrial fields that require flexible transmission, especially:
1.Material conveying equipment: conveyor belts, conveyors, elevators.
2.Fluid machinery equipment: water pumps, oil pumps, fans, compressors.
3.Packaging and food machinery: Packaging machines, filling machines, food processing equipment (polyurethane complies with FDA standards and can be used in the food industry).
4.Papermaking and printing machinery.
5.Textile machinery.
6.Automation equipment and robots: Connection of servo motors and stepper motors.
7.CNC machine tools: Feed axis drive for small and medium-sized machining centers.
Parameters of Flexible Claw Coupling
Product Overview and Definition of Flexible Claw Coupling
Polyurethane elastic spider flexible shaft coupling, often simply referred to as "plum blossom coupling" or "claw coupling", is a widely used all-weather, high-performance flexible coupling. Its core feature lies in the use of an elastic body made of polyurethane (PU) material. Due to its shape resembling multiple claws of a spider, it is named "elastic spider" or "plum blossom pad".
It is mainly used to connect two transmission shafts. While transmitting torque and motion, it compensates for various centering errors, absorbs vibration and shock loads, protects the equipment on the driving side (such as motors) and the driven side (such as pumps and fans), and ensures the smooth and reliable operation of the transmission system.
Structure and components of Flexible Claw Coupling
This type of coupling is mainly composed of three parts:
1.Two metal Hub discs (Hub) : Usually made of aluminum alloy (lightweight, anti-corrosion) or high-quality steel (high torque). Each hub disk has several "claws" or "teeth", and is equipped with shaft holes and keyways (or clamping screws) for the fixed connection of the drive shaft and the driven shaft.
2.A polyurethane elastomer (Spider) : This is the core functional component of the coupling. Its shape is a multi-claw star-shaped structure, precisely embedded between the claw teeth of the two metal hub discs. It serves as an intermediate medium, transmitting torque and providing flexible compensation.
Operating Principle of Flexible Claw Coupling
When the motor starts and transmits torque:
1.The metal hub disk on the drive side squeezes the polyurethane spider through its claw teeth.
2.The polyurethane spider undergoes elastic deformation, transmitting force to the hub disk claw teeth on the driven side.
3.During this process, the elasticity of polyurethane materials can:
Compensation deviation: Adapt to the radial, angular and axial deviations between the two axes through its own deformation.
Buffering and shock absorption: Absorb the vibration and instantaneous impact load generated during operation to prevent damage to the equipment caused by rigid impact.
Electrical insulation: Polyurethane material is an excellent insulator that can block stray currents between two shafts and prevent electrical corrosion.
Core features and advantages of Flexible Claw Coupling
1.High elasticity and shock absorption: Polyurethane materials have excellent elasticity, wear resistance and tear resistance, which can effectively dampen vibration and ensure smooth transmission.
2.Strong ability to compensate for centering errors: It can simultaneously compensate for radial, angular and a small amount of axial deviations, reducing the precision requirements for installation centering and saving installation time and costs.
3.Maintenance-free and long service life: No lubrication required, simple structure, polyurethane spider is oil-resistant, ozone-resistant and aging-resistant, with a long working life. When replacing, only the elastic spider needs to be replaced, and the maintenance cost is extremely low.
4.Electrical insulation: Pre
vents current from passing through couplings and protects components such as bearings.
5.Torsional flexibility: It provides a certain degr
ee of torsional flexibility, which helps to alleviate torsional vibration during startup or load changes.
6.Low cost and high cost performance: Compared with gear couplings, membrane couplings, etc., its manufacturing cost and procurement cost are more advantageous.
7.Easy to install: Compact structure, light weight (especially the aluminum hub), and very convenient for installation and disassembly.
Main application fields of Flexible Claw Coupling
Due to its excellent performance, the plum blossom coupling is almost applicable to all general industrial fields that require flexible transmission, especially:
1.Material conveying equipment: conveyor belts, conveyors, elevators.
2.Fluid machinery equipment: water pumps, oil pumps, fans, compressors.
3.Packaging and food machinery: Packaging machines, filling machines, food processing equipment (polyurethane complies with FDA standards and can be used in the food industry).
4.Papermaking and printing machinery.
5.Textile machinery.
6.Automation equipment and robots: Connection of servo motors and stepper motors.
7.CNC machine tools: Feed axis drive for small and medium-sized machining centers.
Parameters of Flexible Claw Coupling
