spider coupling size chart pdf


spider coupling

Spider Coupling: Your Ultimate Guide

Introduction to Spider Coupling

Spider couplings, also known as jaw couplings, are a pivotal component in the machinery for transmitting torque between two shafts that are not collinear. Their design incorporates an elastomeric spider insert, which allows for the accommodation of misalignment, dampening of vibrations, and absorption of shock loads.

Key Features

  • Versatility: Suitable for a wide range of applications, from light-duty to heavy-duty machinery.
  • Easy Maintenance: The simple design allows for quick inspection and replacement without the need for special tools.
  • Customization: Available in various materials and sizes, including the specifications listed in the “spider coupling size chart pdf,” to meet specific application requirements.


Spider couplings are widely used in various industrial and mechanical applications where slight misalignments, vibrations, and shock loads are present. These include, but are not limited to, pump drives, compressors, generators, and conveyor systems.

Advantages of Spider Coupling

spider coupling

Choosing a spider coupling for your machinery comes with numerous benefits:

  • Compensation for Misalignment: It can accommodate parallel, angular, and axial misalignments, ensuring smooth operation.
  • Dampening Capabilities: The elastomeric spider helps in reducing vibrations and noise, thus protecting connected equipment.
  • Shock Load Absorption: Provides protection against transient torque spikes, enhancing the longevity of the machinery.
  • Electrical Insulation: Acts as an insulator between the driving and driven shafts, preventing electrical current passage.
  • Failure Safety: In the event of spider element failure, it provides a degree of drive, minimizing downtime.

spider coupling

Working Principle of Spider Coupling

Spider couplings transmit torque through the compression of an elastomeric spider insert placed between two interlocking jaws. This setup allows for the coupling to accommodate misalignments and absorb vibrations and shocks. The elastomer spider deforms under load, which facilitates the misalignment capabilities and dampening properties of the coupling.

Selecting the Right Spider Coupling

To select the most suitable spider coupling for your application, consider the following:

  • Application Requirements: Understand the torque, speed, and misalignment needs of your application.
  • Size and Fit: Refer to a “spider coupling size chart pdf” to find a coupling that fits the shaft diameters you are working with.
  • Material Compatibility: Choose materials that are compatible with the operational environment to prevent premature failure.
  • Temperature Range: Ensure the selected coupling can operate within the temperature extremes of your application.
  • Serviceability: Consider ease of maintenance and availability of replacement parts.

Maintenance of Spider Coupling

Maintaining spider couplings is vital for ensuring their longevity and optimal performance. Regular inspections should check for signs of wear, cracks, or degradation in the spider element. The coupling should be kept clean, and any worn or damaged parts should be replaced promptly. Proper maintenance not only extends the life of the coupling but also prevents machinery downtime.

About HZPT

HZPT, established in 2006, is a leading manufacturer and exporter dedicated to the design, development, and production of couplings. With a 16-year-strong design and R&D team, HZPT customizes products to meet global customer requirements. Our comprehensive quality control system spans from raw materials to finished products, ensuring the highest standards. All our products are CE and TUV certified, underscoring our commitment to quality. HZPT’s philosophy is “Customer satisfaction, our pursuit.” We take pride in our production capabilities, esteemed reputation in Europe and America, and our ability to offer the best service, highest product quality, and competitive pricing. Our product range includes radial elastic couplings, tire couplings, universal couplings, gear couplings, spider couplings, rigid couplings, and more, designed for various industrial applications. If you are interested in our products or wish to discuss a custom order, feel free to contact us. We look forward to forming successful business relationships with new clients around the world.