Jaw Couplings

The jaw coupling consists of three core components:

1. Two metal claw plates: usually made of 45 steel, aluminum alloy or stainless steel material is used under special working conditions. The claw plate undergoes precision machining such as turning, milling, and pulling, and is subjected to overall heat treatment to ensure mechanical strength.
   

2. Elastic element: a plum blossom shaped polyurethane or rubber elastic body located between two claw disks, with different designs such as 4 petals, 6 petals, 8 petals, or 10 petals, and optional hardness (commonly 92A, 98A, 64D Shore hardness).

Working principle: Transmit torque and compensate for shaft deviation through compression deformation of elastic elements. When there is relative displacement between the two axes, the elastic body undergoes corresponding deformation, achieving automatic compensation function while absorbing vibration and impact energy.

performance advantage

1. Compensation capability: capable of compensating for axial (± 0.5mm), radial (± 0.5mm), and angular (± 1 °) deviations simultaneously
   

2. Vibration damping performance: The vibration attenuation rate can reach over 30%, especially suitable for impact load situations
   

3. Electrical insulation: resistance value>10 ¹² Ω, effectively blocking shaft current
   

4. No backlash transmission: Curved claw design achieves zero backlash (accuracy ≤ 0.05mm)
   

5. Maintenance free: No lubrication required, with a typical lifespan of up to 10 years (consistent with the lifespan of elastomers)

Main Categories

1. Traditional straight claw type: an economical solution suitable for ordinary motor transmission
   

2. Curved Claw Type (Zero Gap Type): Servo level accuracy, used for precision transmission of CNC machine tools, robotic arms, and other precision drives
   

3. Double section design: vibration attenuation rate increased by 40%, suitable for high-frequency vibration occasions such as pump sets

jaw couplings are widely used in the following scenarios:

1. Precision machinery: CNC machine tools (machining centers, engraving machines), semiconductor equipment
   

2. Industrial transmission: pump sets, fans, compressors
   

3. Material transportation: conveyors, cranes, lifting equipment
   

4. Automation equipment: robotic arm, linear module, servo drive system
   

5. Special Environment: Food Machinery, Mining Machinery (Dustproof Design)

As a key component of mechanical transmission systems, the correct selection and installation of jaw couplings directly affect the reliability and lifespan of the entire equipment operation. It is recommended to comprehensively consider dynamic load spectrum, environmental factors, and cost-effectiveness when selecting, and consult professional technical personnel for systematic analysis if necessary.