What Is an MT Jaw Coupling?

An MT jaw coupling is a flexible shaft coupling used to connect two rotating shafts while transmitting torque and helping reduce vibration and mechanical shock.

A typical MT jaw coupling consists of three main components:

Driving Hub + Flexible Coupling Pad + Driven Hub

The two metal hubs connect to the driving and driven shafts. The flexible coupling pad is positioned between the jaws of the hubs.

When the driving shaft rotates, torque is transferred through the flexible element to the driven shaft.

This simple construction makes the MT flexible coupling suitable for many industrial power transmission applications.

How Does an MT Jaw Coupling Work?

The operating principle of an MT jaw coupling is relatively simple.

The driving hub is connected to the motor or other power source. The driven hub is connected to the equipment being driven.

The flexible coupling pad sits between the two hubs.

During operation:

1. The motor rotates the driving hub.
2. The jaws of the driving hub engage with the flexible coupling pad.
3. The coupling pad transfers torque to the driven hub.
4. The driven hub rotates the connected shaft.
5. The flexible element absorbs part of the vibration and mechanical shock.

The elastomeric element also allows the coupling to accommodate limited shaft misalignment.

What Is the Coupling Pad in an MT Coupling?

The coupling pad is the flexible element located between the two metal hubs.

It may also be called:

• MT coupling pad
• MT coupling spider
• Jaw coupling spider
• Flexible coupling element
• Elastomeric coupling insert
• PU coupling insert

The exact terminology can vary between manufacturers and markets.

For an MT-type flexible coupling, the coupling pad is an important component because it provides the flexible connection between the two hubs.

What Material Is Used for an MT Coupling Pad?

Different flexible coupling designs can use different elastomer materials.

Common materials include:

• Polyurethane (PU)
• NBR
• Hytrel
• Other engineered elastomers

Apex Coupling manufactures this MT coupling pad using imported polyurethane (PU).

PU can provide good wear resistance, flexibility and mechanical durability for many industrial coupling applications.

The appropriate material should always be selected according to the actual operating environment.

Advantages of an MT Flexible Coupling

An MT jaw coupling can provide several practical advantages.

Vibration Damping

The flexible element helps absorb vibration generated during shaft rotation.

Shock Absorption

The elastomeric coupling pad can reduce the effect of sudden mechanical loads.

Misalignment Compensation

The flexible element allows limited shaft misalignment between the connected equipment.

Low Maintenance

Flexible jaw coupling systems generally do not require routine lubrication.

Easy Component Replacement

If the coupling pad becomes worn, it may be possible to replace the flexible element without replacing the complete metal coupling hubs.

Where Are MT Jaw Couplings Used?

MT flexible couplings can be used in various industrial power transmission systems, including:

• Electric motors
• Pumps
• Gearboxes
• Compressors
• Fans
• Blowers
• Conveyors
• Machine tools
• Automation machinery
• Manufacturing equipment
• Material handling equipment

The appropriate coupling should be selected according to torque, speed, shaft dimensions, operating conditions and application requirements.

How to Choose an MT Jaw Coupling

Before selecting an MT coupling, consider the following:

1. Shaft Diameter

Confirm the shaft sizes of both connected machines.

2. Operating Speed

Check the normal and maximum operating speed.

3. Torque

The coupling should be selected according to the required torque and actual working conditions.

4. Temperature

Operating temperature can affect the performance and service life of the flexible element.

5. Working Environment

Consider whether the coupling is exposed to:

• Oil
• Grease
• Chemicals
• Dust
• Water
• High temperatures

6. Misalignment

The actual shaft alignment should be checked during installation.

MT Coupling Pad Replacement

The flexible coupling pad is a replaceable component.

If you notice:

• Cracks
• Wear
• Deformation
• Damaged sections
• Increased vibration
• Excessive backlash
• Abnormal noise

the coupling should be inspected.

Replacing a worn coupling pad can help restore the intended flexibility and performance of the coupling.

MT Jaw Coupling Manufacturer

Apex Coupling supplies MT coupling pads and other industrial power transmission components.

We support:

OEM | ODM | Custom Manufacturing | Sample Orders | Bulk Orders

Customers can provide a drawing, sample, dimensions or existing coupling model for evaluation.

Contact Apex Coupling

Email: ella@apexcoupling.com
WhatsApp: +86 13437856962