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Tri-Bar/Four-Bar

A Low Maintenance and Hassle-Free Crane Electrification & Trolley System

As of January 31, 2022, U-S Safety Trolley will no longer be accepting new system orders for our Tri-Bar/Four-Bar products. Please reach out to your local representative for more information and inquiries about replacement parts (subject to availability).

The joint-free construction, easy installation and maintenance, and custom fabrications make the Tri-Bar/Four-Bar the sensible choice in electric trolley bar systems. We eliminated the conductor joints, simplified installation and created the Tri-Bar/Four-Bar electric trolley product lines. On our Tri-Bar/ Four-Bar trolley systems, installation and maintenance are simple and straightforward, and the continuous copper conductor reduces hang-ups and derailments.