Jaw & Spider Couplings

A BRIEF OVERVIEW BY JOSEPH BARLOW

Lovejoy developed the Jaw-style coupling in 1927

Jaw & Spider couplings are popular because they are versatile and robust.

Jaw & Spider Couplings are FailsafeWide Temperature Range

Can handle Angular MisalignmentGood Torque, Speed, Chemical Resistance, & Dampening characteristics

Versatility&

Robustness

Dampening reduces effect of shock and vibration. Angular Misalignment (slight)

Able to endure tough Environments

Jaw & Spider Couplingsare forgiving

butAlignment is still Critical

Torsional Misalignment

Overload Disadvantages

Sheared Spider

Overloaded Hub

Hub overload

Bottom LineLow Cost

AvailabilityServicability

Jaw & Elastomeric Spider