CMI Arborist Pulley 3/4 Inch Rope — 4,000 lb WLL, 4 Inch Sheave, 5.6 lb Weight

Overview

The CMI Arborist Pulley with a 3/4 inch rope is built for demanding rope work in the field. Its compact form houses a robust load path designed to move rope smoothly during lifts, lowers, and rigging tasks. This pulley is designed to pair with trusted arborist rope systems while staying manageable to carry on a daily job.

Key specifications

• MBS: 40,000 lbs (18,000 kg)
• WLL: 4,000 lbs (10:1 ratio)
• Max Rope: 3/4" (20 mm)
• Sheave: 4" (100 mm)
• Weight: 5.6 lbs (2.5 kg)

Design and performance

With a high minimum breaking strength and a practical WLL, this pulley offers a generous margin for controlled rope work. The 4 inch sheave keeps line movement steady under load, while the rope diameter capability allows for common options used in arborist and industrial settings. At 5.6 pounds, the unit stays portable enough to switch between jobs without adding substantial bulk to your kit. The straightforward construction supports reliable operation through repetitive use in tough environments.

Durability is further enhanced by a thoughtful load path that distributes force along the rope, helping you manage tension with confidence when guiding line through branches or anchors. Pair it with compatible rope and proper hardware to create setups that feel predictable in the field, even when conditions get challenging. The result can be a smoother, more controlled workflow without sacrificing portability.

Practical benefits you may experience

Expect smoother rope flow, predictable load handling, and a compact footprint that stays out of the way in tight workspaces. While results depend on your overall rigging plan, the combination of strong strength, reasonable weight, and simple operation can contribute to more efficient field tasks.

• Tree rigging and branch lowering with a trusted arborist pulley
• Rope management in vertical systems and anchor configurations
• Light enough for everyday field use yet robust for demanding jobs

Usage notes

Max rope diameter is 3/4 inch. Use with compatible rope materials and appropriate PPE. Ensure hardware compatibility and follow standard rigging practices. This product is part of a complete rope access solution for professionals.