Built for technical tree removals, spar work, storm response, and precision rigging applications, the GRCS allows arborists to safely raise and lower large loads while reducing physical strain on ground crews.
What is the GRCS?
The Good Rigging Control System is a dual-purpose arborist winch and lowering device that mounts directly to a tree trunk. The system uses a Harken self-tailing winch with two gear ratios that provide up to a 44:1 mechanical advantage, allowing crews to lift and tension heavy loads with exceptional control.
The GRCS also functions as a high-capacity lowering device for controlled descents during dynamic rigging operations.
Key Features of the GRCS Arborist Rigging System
Self-Tailing Arborist Winch
The integrated Harken 46.2 Radial Winch allows operators to:
- Lift heavy tree sections
- Pretension rigging systems
- Pull limbs away from structures
- Perform controlled directional rigging
- Reduce manpower requirements
The self-tailing design enables one operator to control the rope while cranking, improving efficiency and jobsite safety.
Dual-Speed Mechanical Advantage
The GRCS offers:
- 44:1 mechanical advantage for heavy lifting
- 22:1 mechanical advantage for faster operation
This flexibility gives arborists the power needed for technical removals and precision load handling.
Controlled Lowering Device
The dedicated lowering bollard provides smooth friction management for:
- Negative rigging
- Dynamic lowering
- Piece-by-piece dismantling
- Speed line systems
- Heavy wood lowering
This controlled friction helps reduce shock loading and improves rope management during demanding rigging operations.
Heavy-Duty Load Capacity
The GRCS is engineered for professional arborist applications and features:
- Max Lifting Load: 1653 lbs. / 750 kg
- Max Holding Load: 2000lbs. / 907 kg
- High-strength aluminum and steel construction
- Secure tree-mounted clamping system
- High-capacity drum is compatible with large arborist rigging ropes
Designed for commercial tree crews, the GRCS performs reliably in high-load rigging environments.
Fast Tree-Mounted Installation
The GRCS mounting plate secures directly to the tree, allowing quick deployment on removals, crane jobs, and technical rigging setups. Its portable design enables crews to move the system efficiently between work locations.
Technical Specifications
| Max Lifting Load | 750 kg / 1653 lbs |
| Max Holding Load | 907 kg / 2000 lbs |