Types Of Universal Joint Couplings

As a core component in mechanical transmission systems, universal joint couplings can achieve variable angle power transmission and compensate for axis deviation, and are widely used in fields such as automobiles, industrial equipment, and agricultural machinery.

Rigid universal joint coupling

1. Cross axis universal joint (non constant velocity type)
   Features: Articulation is achieved through a cross shaft and bearing seat, with a simple structure and low cost, but there are instantaneous angular velocity fluctuations during transmission.
   Application: Low speed heavy-duty scenarios, such as agricultural machinery transmission shafts and metallurgical equipment.
   Representative models: SWP type (partially split bearing seat), SWC type (integral fork head), SWZ type (integral bearing seat).

2. Double/triple pin universal joint (quasi constant velocity type)
   Characteristics: The approximate constant speed transmission within a limited angle is achieved through the combination of double cross shafts, which must meet the conditions of co planar main and slave shafts, and equal angles between the intermediate shaft.
   Application: Scenarios requiring medium precision transmission, such as construction vehicles and oil drilling rigs.

Constant velocity universal joint coupling

1. Ball cage universal joint coupling
   Advantages: Good sealing, maintenance free, overload protection.
   Applications: Automotive steering systems, precision machine tool spindles.

2. Ball fork universal joint coupling
   Features: The structure is simpler than that of a ball cage, but the load-bearing capacity and swing angle are smaller, making it suitable for light vehicles or medium to low speed transmissions.

Flexible universal joint coupling

1. Features: It uses rubber or metal elastic elements to transmit torque, can absorb vibration and impact, and does not require lubrication.

2. Applications: Food machinery (made of stainless steel), chemical pumps, high-speed fans.

Special structure universal joint coupling

1. Scalable universal joint coupling
   Features: Built in spline or sliding sleeve, allowing axial displacement compensation, suitable for thermal expansion conditions.
   Representative models: SWC-BH (standard expansion welding type), SWP-A (expandable long type).

2. Flange quick installation universal joint coupling
   Features: Flange bolt connection, easy installation, suitable for modular equipment.

3. Drum gear coupling
   Features: The outer teeth are made into a spherical surface, with a 50% higher angular displacement compensation than the straight tooth type, and a 15-20% increase in load-bearing capacity.
   Application: Low speed and heavy-duty fields such as metallurgy and mining.