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Couplings
Couplings are essential mechanical devices used to connect two shafts together at their ends for the purpose of transmitting power. They allow smooth torque transfer, accommodate misalignments, absorb shocks, and protect equipment from excessive wear and tear. In industries like oil & gas, cement, mining, agriculture, power generation, and manufacturing, couplings ensure reliable and efficient operation of machinery while extending the life of rotating equipment.
Types of Couplings
COUPLINGS
1.Pin Bush Coupling
A flexible coupling that uses rubber bushes and steel pins to transmit torque while damping shocks and vibrations.
- Absorbs vibration & shock loads
- Operates efficiently in harsh environments
- Simple installation & maintenance
- Function: Uses steel bolts and rubber bushes to transmit torque and absorb shocks.
- Temperature Range: −20°C to +250°C
- Power Range: 0.80 kW to 240 kW @ 100 rpm
- Max Angular Misalignment: ≤ 0.67°
- Best For: Pumps, Blowers, Line Shafts, Wire Mills, Cement Plants, Rolling Mills, Ball and Tube mills
Coupling
2.Tyre Coupling
An elastic coupling with a rubber tyre element that provides high flexibility, torsional damping, and misalignment compensation.
- Handles angular, axial & parallel misalignments
- High vibration absorption
- deal for pumps, compressors, and conveyors
- Function: Torsionally elastic with taper lock fixing; uses rubber elements.
- Temperature Range: Natural Rubber: −50°C to +50°C Neoprene Rubber: −15°C to +70°C
- Power Range: 0.2 kW to 132 kW @ 100 rpm
- Max Angular Misalignment: ≤ 4°
- Best For: Centrifugal Pump Application for – Oil & Gas, Agriculture, Mining & Metallurgy, Nuclear Plants
Coupling
3.Jaw Coupling
Compact coupling with three-part construction (two hubs & elastomer spider) that transmits torque while damping vibrations.
- Fail-safe design – keeps running even if elastomer fails
- Easy to assemble/disassemble
- Cost-effective and compact
- Function: Dampens small amplitude vibrations and absorbs shock loads; customizable spacer length.
- Temperature Range: −40°C to +100°C Power Range: 0.2 kW to 22.4 kW @ 100 rpm
- Max Angular Misalignment: ≤ 1°
- Best For: Conveyors, Elevators, Packaging Machinery, Food processing plants, Compressors, Blowers, Paper mills, General machine tools
Coupling
4.Gear Coupling
Heavy-duty flexible coupling with gear teeth that provides high torque transmission and accommodates misalignments.
- Very high torque capacity
- Compact yet robust
- Suitable for heavy-duty industries (steel, cement, mining)
- Function: Flexible mechanical coupling for compensation of angular, parallel, and axial misalignments. Sleeves with Gasket are joined with High tensile bolts
- Temperature Range: −20°C to +120°C
- Power Range: 11.5 kW to 11,500 kW @ 100 rpm
- Max Angular Misalignment: ≤ 1.5°
- Best For: Metal rolling mills, Cement plants, Paper mills, Cranes, Hoist, Rubber and Plastic Industries, Heavy duty applications
Coupling
5.Roller Chain Coupling
Uses a chain and sprocket arrangement to transmit torque; simple yet effective for moderate torque applications.
- Compact and economical
- Easy to install/remove
- Suitable for conveyors, printing, agriculture
- Function: Torque transmission via sprocket teeth and roller chain pins.
- Temperature Range: −20°C to +120°C
- Power Range: 0.75 kW to 330 kW @ 100 rpm
- Max Angular Misalignment: ≤ 2°
- Best For: Multi-car parking, Material Handling, Agriculture, Steel, Mining, Printing and paper industries