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Difference Between Lovejoy Coupling & Pin Bush Coupling

Couplings serve a vital purpose; they hold mechanical parts together. Their design and purpose is to connect two objects. Lovejoy is a company that manufactures and markets numerous types of couplings and is well known in the field. Pin bush, or pin and bush, refers to one specific type of coupling manufactured by numerous companies.

Worldwide Company
- The website of Lovejoy has these words after its name "Where the world turns for couplings." This indicates the company's business as a manufacturer of couplings since the 1920s. The Lovejoy brand is known around the world and is associated with the production of flexible shaft couplings. Not only does Lovejoy manufacture couplings, its engineers design and develop new applications to meet its customers' evolving requirements.
Safety
- Pin and bush couplings meet a need in devices that require the utmost safety. This product was designed in the 1920s by a company named Renold. Its simple design produces a safe product used in fire pumps and elevators. The design includes an elastomer, or synthetic rubber, that softens vibrations and makes impacts safer. The modern version uses urethane rather than an elastomer.
Products
- Lovejoy produces a wide variety of couplings. One such is the jaw type used in all sizes of electrical motors and power transmissions applications. It contains two hubs with an elastomer element. Lovejoy also manufactures specialty products designed to meet the specific needs of customers for that special coupling.
Fail-Safe
- Fail-Safe is a concept that provides protection for a product. The jaw type coupling by Lovejoy has that feature that allows it to continue functioning even if the elastomer fails. The pin and bush coupling contains a fail-safe of a different type. Its design provides for servicing of a damaged elastomer at designated intervals. This ensures that the coupling will not continue to function with a damaged part.

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