Lovejoy L225 SPIDER SOX

Description

Lovejoy jaw type couplings generally consist of two hubs (available in sintered metal, aluminum, bronze, steel, stainless steel, and ductile iron), and an element, known as a spider or cushion (materials include NBR SOX rubber, Urethane, Hytrel, and Bronze).

Solid Center Spider

• The solid center design is commonly used design when shafts of the driver and driven equipment can be kept separate by a standard gap

Open Center Spider

• The open center design allows for the shafts of the driver and driven to be positioned within a short distance
• Open center spiders offer shaft positioning flexibility but have a lower RPM capacity (1,750 RPM maximum for NBR and 3,600 maximum for Urethane/Hytrel)

Spider Materials

• SOX (NBR) Rubber (Standard Insert) – Nitrile Butadiene (Buna N) Rubber is a flexible elastomer material that is oil resistant, resembles natural rubber in resilience and elasticity.
• Urethane – Greater torque capability than NBR (1.5 times), provides less dampening effect, and operates in a smaller temperature range. Good resistance to oil and chemicals. Not recommended for cyclic or start/stop applications.
• Hytrel – Flexible elastomer designed for high torque and high temperature operations. Excellent resistance to oil and chemicals. Not recommended for cyclic or start/stop applications.
• Bronze – Rigid, porous oil-impregnated metal insert exclusively for low speed (max 250 RPM) applications requiring high torque capabilities. Not affected by extreme temperatures, water, oil, or dirt.