HomePolyurethane (PU) Elastomeric Couplings
Motion Control Shaft Couplings with Material-Flexing Polyurethane Element
We provide flexible bonded polyurethane couplings with a split tire design for simple installation and maintenance. Manufactured in Korea with over 20 years of experience, our elastomeric couplings are in use in over 28 countries. Since 1999, our flexible shaft couplings have gone through numerous quality improvements to enhance the bonded polyurethane strength to satisfy the coupling requirements for today’s demanding applications in various industries.
Flexible Mechanical Couplings | Applicable industries and applications
Polyurethane (PU) based Elastomeric Coupling Advantages
Heavy Duty Flexible Shaft Coupling Features
Standard type
Spacer type
Standard Elastomeric Flexible Shaft Coupling
Features
HT Type Coupling
for high torque and torsional stiffness
HS Type Coupling
for hot and humid conditions
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Elastomeric Shaft Coupling Advantages for Power Transmission Requirements
In various industries from oil and gas, steel, agriculture and mining, traditional gear couplings have been used to connect one rotating shaft to another for power transmission. Gear couplings were simple, yet cumbersome to maintain for two main reasons.
By design, gear couplings will not function properly without proper lubrication and regular preventive maintenance. Without regular maintenance procedures, gear couplings will eventually drift to increase misalignments as it does not absorb the vibrations of the powered components. Also, with its rigid and unforgiving structure, when gear couplings malfunction, it does not protect the connected equipment causing damage or unnecessary wear and tear to connected powered components.
A flexible shaft coupling, such as the elastomeric coupling was designed with polyurethane component to eliminate these problems associated with power transmitting shaft couplings. Due to the elastomer component of the coupling, no lubricant is ever required. The flexible nature of the couplings can withstand the stop and go pressure of the connected shafts while also compensating for misalignments in the shaft ends at the same time.
Flexible elastomeric couplings also provide a safe breaking point that saves costly repairs to your connected system components. In cases of severe torque overload, the elastomer component will serve as a break point before causing costly damages to other expensive parts in the drive train. With its split-in-half design, the coupling then can be easily replaced, causing minimal downtime to your manufacturing plant.
With multiple cover options ranging from high torque, high humidity, chemical resistance, and varying torsional stiffness, elastomeric couplings can provide a predictable solution for your power transmission requirements.
Installation Steps
Step 1
- Inspect both shafts (driven & driving) and hub bores and comfirm they are clean with no dirty particle or burrs.
- Be sure the keys fit shafts properly
- Mount both hubs to the shafts securing only one hub while the other side hub should be loose for minor adjustment of spacing
- In case tapered is being used, follow bushing manufacturer’s instructions
- If hub is bored for an interference fit, we recommend heating the hub in water or oil bath and after heating, immediately position it on the shaft
- Be careful as spot heat may cause distortion
Step 2
- Place half of the element around hubs and secure with capscrews provided
- The element will space the other hub. It is important to have the capscrews properly tightened
- For proper placement of capscrews, see Table 1 below for recommended capscrew torques and instructions
- Now secure the other hub to the shaft
Step 3
- Mount other half of the element to hubs
- Tighten all capscrews
*Above shown Spacer Type coupling installation; the same procedure applies for the standard, HT, and HS type couplings