These ascenders come in 3 categories: Lite Duty, Rescue Model, & Heavy Duty. Each Gibbs is pull tested to 1,000 lbs. at the factory. Spring Loaded models will support their own weight when there is no load on the cam. The shell bottom has been modified creating a curved interface, improving the holding power. The Rescue & Heavy Duty Models have a tough polyurethane coated cam which will melt or abrade off under extreme loading. This allows the ascender to slip a short distance, and reduce the total force delivered to the rope.
SPECIFICATIONS
Lite Duty Aluminum Shell/Cast Aluminum Cam Ropes: 3/8"(10mm) to 1/2"(12.5mm) Weight: 7oz.\tStrength: 2,500lbs. (Free Running or Spring Loaded)
Rescue-NFPA Aluminum Shell/Forged Aluminum Cam Ropes: 3/8"(10mm) to 1/2"(12.5mm) \tWeight: 7.5oz. Strength: 5,200lbs. (Spring Loaded only)
Rescue-ANSI Stainless Shell/Forged Aluminum Cam Ropes: 3/8"(10mm) to 1/2"(12.5mm) Weight: 11.7oz. Strength: 5,200lbs. (Spring Loaded only)
Heavy Duty Aluminum Shell/Forged Aluminum Cam Ropes: 9/16"(14mm) to 3/4"(19mm) Weight: 13.8oz. Strength: 5,200lbs. (Spring Loaded only)
Heavy Duty-ANSI Stainless Shell/Forged Aluminum Cam Ropes: 9/16"(14mm) to 3/4"(19mm)\tWeight: 17.6oz. Strength: 5,200lbs. (Spring Loaded only)