Jaw Coupling Spiders

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Jaw coupling spiders are used to connect two shafts for torque transmission between them. They absorb shocks and vibrations and compensate for misalignment between the two shafts. These jaw coupling... Read More

LOVEJOY -

Spider, SOX NBR, Solid, AL150 Size, 80A Shore Hardness, Jaw Coupling Type

Spider, SOX NBR, Solid, AL150 Size, 80A Shore Hardness, Jaw Coupling Type
ModelItemPrice (inc. GST)
68514418027AJ2XBTA$ 87.48
RULAND MANUFACTURING -

Urethane Spider Jc12/mjc19 Coupling Size

Urethane Spider Jc12/mjc19 Coupling Size
ModelItemPrice (inc. GST)
JD12/19-85BAC9NNHA$ 62.85
LISLE -

Large Spider

Large Spider
ModelItemPrice (inc. GST)
LS/17640CD8ELAA$ 7.17
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12

Jaw Coupling Spiders

Jaw coupling spiders are used for torque transmission between two shafts and protecting components from damage by dampening vibrations & shocks. Raptor Supplies offers a wide range of reliable jaw coupling spiders from brands such as Boston Gear, Dayton, Lovejoy, Lisle and TB Wood's. Lovejoy L type spiders are designed to accommodate angular and parallel shaft misalignment. These spiders feature urethane, hytrel, bronze or SOX (NBR) rubber construction ensuring excellent abrasion resistance and protection against dirt, oil, sand, grease & moisture. They prevent metal to metal contact, ensuring in less internal wear and deliver torque up to 704 Nm. TB Wood’s urethane jaw coupling inserts are designed for adjusting a maximum of 0.015 inch parallel and 1 degree angular misalignments. These inserts provide 1.5 times higher torque than Buna N inserts, but with reduced vibration damping. They are capable of being operated at temperatures ranging between -30 and 160 degrees F. These jaw coupling spiders are available in heights ranging from 0.44 to 5 inches on Raptor Supplies.

Working Mechanism

  • The jaw coupling consists of two hubs with curved jaws that interlock with a spider placed in between.
  • When torque is applied to one of the hubs, it causes the jaws (on that hub) to grip the spider.
  • This mechanism transfers the torque to the other hub through the jaws on the other side of the spider.

Features

Dayton Spider Coupling Inserts:

  • They are used with metal jaw couplings for uniform power transmission while maintaining structure and position.
  • These Hytrel spider inserts offer excellent oil & impact resistance and are capable of withstanding temperatures ranging from -60 to 70 degrees F.
  • Their assembly comprises two jaw hubs and a spider for transmitting higher torque and preventing misalignment (angular & parallel) between the connecting shafts.

Lovejoy Snap Wrap Spiders:

  • These flexible snap wrap spiders permit close shaft separation up to the hub's maximum bore size.
  • They have urethane or SOX (NBR) rubber construction that ensures abrasion resistance and protection against dirt, grease & moisture.
  • Their snap wrap design allows easy removal of the units without moving the hubs.

Ruland Manufacturing Curved Jaw Coupling Spiders:

  • They dampen shocks and accommodate misalignment (angular, parallel & axial) between coupling hubs.
  • Their polyurethane construction does not require lubrication and can hold up against dirt, sand, grease, oil & moisture.
  • These coupling inserts are used with coupling hubs and can handle torque ratings up to 8000 RPM.

Frequently Asked Questions

How to select the right jaw coupling spider for my application?

The selection of a jaw coupling spider depends on the torque capacity, shaft size, operating temperature and chemical compatibility of the material with the fluids or gases being transferred.

How do I install a jaw coupling spider?

  • Ensure that the shafts are properly aligned and clean.
  • Place the spider between two coupling hubs and align jaws of hubs with the teeth of the spider.
  • Tighten the screws or bolts on the hubs to secure the spider.
  • Finally, check for proper alignment and ensure that the spider is not overstretched or damaged.

How do I maintain a jaw coupling spider?

  • Regularly inspect it for signs of wear, damage or stretching.
  • Clean the spider and coupling hubs to prevent the buildup of debris or contaminants.

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