Bushed Pin Couplings

Structural composition

1. Flange type half coupling: Two symmetrical flanges with bolt holes, usually made of cast iron or steel material, with a surface precision machined to ensure the flatness of the contact surface.
   

2. Rubber lining: an elastic element nested in bolt holes, mostly made of oil resistant chloroprene rubber or polyurethane, with a hardness range of 60-80 Shore A, providing radial compression deformation space.
   

3. Column pin component: High strength alloy steel pin, chrome plated anti rust surface, connected to the two halves of the coupling through the bushing, allowing for slight sliding while transmitting torque.

Compensation mechanism

1. Axial displacement: The rubber liner can absorb an axial displacement of ± 1.5mm (such as thermal expansion difference) when subjected to compression deformation.
   

2. Radial offset: The lateral deformation of the liner adapts to radial deviations of ≤ 0.8mm (such as installation errors).
   

3. Angular deviation: Angle compensation within ± 1 ° is achieved through uneven compression of the lining (such as misalignment of the shaft system).

Torque transmission path

Drive shaft → flange half coupling → column pin squeezing rubber sleeve → driven side flange → driven shaft, vibration energy is converted into thermal energy dissipation by internal friction of rubber molecules.

Typical applications

1. Motor pump assembly: compensates for instantaneous alignment deviation during motor start-up to avoid bearing overload.
   

2. Conveyor Drive: Absorbs shaft displacement caused by chain tension and protects gearbox gears.
   

3. Ventilation system: isolate the vibration transmission caused by the unbalanced movement of the fan impeller.