Stainless steel screw-fixed screw clamping plum coupling

Structural composition

Stainless steel parts: These two types of Couplings are usually made of stainless steel, such as SUS303 stainless steel, which has good corrosion resistance and mechanical properties, can adapt to harsh working environments, and extend the service life of the coupling.

Metal claw plate: generally composed of two metal claw plates with convex teeth. The shape and size of the claw plate vary according to different models and specifications. Common types include straight claw type and curved (concave) claw type. The curved claw type can reduce the deformation of the elastic plum blossom spacer and limit the influence of centripetal force on it during high-speed operation. 2.

Elastomer: The plum blossom-shaped elastomer located between the two half coupling claws is a key component, mostly made of high-strength polyurethane plastic, with good elasticity and wear resistance, capable of absorbing vibration and impact, and compensating for the displacement deviation between the two shafts 25.

Fixing device: The screw fixing type fixes the coupling directly on the shaft by screws to achieve axial positioning and prevent loosening; while the screw clamping type uses the clamping force of the screw to make the inner hole of the coupling fit tightly with the shaft to achieve the purpose of fixing 125.

Performance characteristics

Shock absorption and buffering performance: The plum blossom-shaped elastomer can effectively absorb and dissipate the vibration and impact energy during the transmission process, reduce the noise and vibration of the equipment during operation, protect the connected equipment, improve the stability and reliability of the equipment, and reduce the maintenance cost of the equipment.

Displacement compensation capability: It can compensate for radial displacement, angular displacement and a certain degree of axial displacement between the two shafts. Generally, the radial displacement can reach about 0.1D (D is the outer diameter of the coupling), the angular displacement can reach 1°-2°, and the axial displacement can reach about ±0.2D. It can adapt to installation errors within a certain range and dynamic deformation of the shaft system to ensure the normal operation of the transmission system 5.

High torque transmission capability: It has a large torque transmission range and can meet the transmission requirements of different power equipment. Its transmission nominal torque is generally between 16-25000Nm, and the allowable speed is between 10900-1900r/min234.

Good wear resistance and oil resistance: High-strength polyurethane elastic elements are wear-resistant and oil-resistant, suitable for some working environments with oil pollution and wear risks, such as machine tools, mining machinery, etc., to ensure the stable performance of the coupling under harsh working conditions 25.

Electrical insulation: It is resistant to grease and has good electrical insulation properties. It can be used in some equipment that requires electrical insulation, such as electrical equipment, testing instruments, etc., to prevent current from being conducted through the coupling and ensure the safe operation of the equipment.

Reversibility: The clockwise and counterclockwise rotation characteristics are exactly the same, which is suitable for transmission systems that require forward and reverse rotation, such as stepper motors, servo motors, etc. It can stably transmit torque in different rotation directions to ensure the normal operation of the equipment15.