The FTC TREE DONUT rigging block is designed for professional arborist rigging operations. It combines a traditional rotating sheave and a central friction ring in one compact body, allowing the user to select the working mode depending on required friction and load characteristics.

When the rope runs over the sheave, friction is reduced and rope travel is smoother, which is suitable for lifting loads, redirects or precise positioning. When used over the central ring, friction is increased, improving speed control during lowering and helping to reduce dynamic impact forces within the system. This configuration is particularly suitable for dynamic rigging of branches and trunk sections.

The design allows single or dual rope operation, expanding possibilities in complex dismantling or load transfer situations. The round body shape reduces the risk of incorrect positioning and facilitates installation between anchor points.

Technical parameters

Minimum Breaking Strength (MBS):
400 kN (sheave)
300 kN (ring)

Working Load Limit (WLL):
80 kN (sheave)
60 kN (ring)

Maximum rope diameter:
Ø 14 mm (spliced eye)
Ø 22 mm (non-spliced)

Weight: 1.6 kg

Side plates and sheave material: aluminium
Inner ring and spacers material: stainless steel

Intended use and limitations

FTC TREE DONUT is intended exclusively for arborist rigging work.

✔ Branch and trunk section rigging
✔ Rope redirects
✔ Dynamic lowering operations

⚠ Not for personal fall protection (not PPE).
⚠ Use only with textile ropes.
⚠ The WLL of the complete system is determined by the weakest component.