ART SpiderJack 3

The ART SpiderJack 3 is a mechanical friction device that takes the place of a friction hitch on a moving rope system (MRS). It is the third generation of ART's SpiderJack, built for smooth tending as you climb and controlled descent when you work your way down.

Why climbers switch to a mechanical hitch

A friction hitch needs constant attention: dressing, setting, adjusting for wet rope and replacing cord as it glazes. A mechanical device like the SpiderJack 3 gives a consistent grip and release from day to day, tends smoothly with a pulley, and stays the same through a long day of work positioning.

The SpiderJack line has been around for years, and the third generation builds on earlier models such as the 2.1. Read ART's rope compatibility guidance before choosing a line. Compare devices in devices for MRS.

The device also takes some of the guesswork out of switching ropes. A friction hitch tied to suit one line may behave very differently on another, while a mechanical hitch behaves more predictably within its listed rope range. That is a real benefit for climbers who move between crews or job types.

Training, inspection and wear parts

Mechanical devices behave differently from hitches. Learn the SpiderJack 3 low and slow with someone experienced, and follow ART's instructions for setup and rope range. Do not climb on it until you can operate it without thinking.

Inspect before every climb for worn friction surfaces, cracks, bent parts and damage to any textile components, and replace wear parts as ART specifies. It is life-support gear: follow ANSI Z133 and the manufacturer's instructions.

Keep ART's instructions with the device and review them when you replace parts, since assembly matters.