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Elasticity Polyurethane Elastic Spiders Flexible Shaft Couplings

  • 40R 50R 60R 70R

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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.



Parameters of Flexible Claw Coupling

Polyurethane Coupling Elastic Buffer (1)Polyurethane Coupling Elastic Buffer (6)






Model
External Diameter
Internal Diameter
Thickness
Number of Teeth
10R
80
49
23
8
20R
114
61
31
8
30R
131
74
35
8
40R
164
82
47
8
50R
210
106
60
8
60R
250
140
65
8
70R
293
164
72
8
80R
350
195
82
8











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