XINDA is proud to announce the release of its newly developed 4:1 Releasable Self-Locking Pulley System (Model: XD-CP9771GL), specially designed for climbing, rescue, rappelling, caving, and industrial high-altitude operations.
This product combines an innovative structure with high-strength materials to meet the highest standards of safety, ease of operation, and durability required by professional users.

Key Features
1. Mechanical Advantage for Easy Operation
Utilizing a 4:1 mechanical advantage design, this pulley system significantly reduces the effort needed for lifting and lowering, making operations more efficient and less physically demanding.
Whether for complex rescue missions or heavy-duty high-altitude work, it provides stable and reliable performance.
2. Automatic Locking for Enhanced Safety
Hands-off automatic locking function prevents accidental descent.
During up-and-down switching, the system locks the rope instantly, ensuring every operation is secure and safe.
3. Detachable and Adjustable Design
The handle can be easily detached and adjusted to either the left or right side, accommodating different user preferences.
Supports flexible switching between upper and lower release modes to adapt to a wide range of scenarios.
4. High-Strength Structure for Superior Performance
- Breaking Load: 45kN
- Working Load: 5kN
- Compatible Rope Diameter: 8.0–8.5mm
The internal precision ball bearing ensures smooth, frictionless rope movement.
The dual-groove concave sheave structure offers better balance and high-speed, low-friction operation under load.
5. Premium Materials for Long-Term Durability
- Aluminum alloy body – lightweight yet strong
- Stainless steel components – corrosion resistant
- High-performance Dyneema core – wear resistant and heat resistant
Even in harsh environments, this system maintains stable and reliable performance over time.
Product Specifications
| Item | Details |
|---|---|
| Model | XD-CP9771GL |
| Sheave Size | Releasable Sheave: 48 × 113mm Swivel Double Sheave: 42 × 105mm |
| Weight | 314g / 231g |
| Breaking Load | 45kN |
| Working Load | 5kN |
| Rope Diameter | 8.0–8.5mm |
| Standard | XF494-2023 |
Applications
Various safety and protection scenarios
Rock climbing
Rappelling and caving
Rescue operations
Outdoor training and team-building activities
Industrial rope access and at-height work
Conclusion
The XINDA 4:1 Releasable Self-Locking Pulley System perfectly combines innovative design with reliable safety features, making it an essential tool for professional climbers, rescue teams, and high-altitude workers.
It not only reduces physical strain but also provides dependable protection during critical operations, making every task easier and safer.
Experience the new XINDA pulley system today and explore endless possibilities!
