Arborist Lowering Devices

Buying guide

Choosing lowering gear

Port-a-Wrap style devices are simple and light: wrap the rope a set number of times to adjust friction. Larger devices handle bigger rope and heavier pieces. Bollard-style systems with a winch or locking feature let one person lower, hold and even lift loads.

Size the device to your rope and loads, attach it to the tree with a rated sling, and keep hands clear of the wraps. Train on smaller pieces before running heavy wood.

Lowering device setup and care

Mount the lowering device on the trunk or a sound anchor near the base of the tree, in line with the rigging line's direction. Place it where the ground worker has a clear view of the piece and a safe spot to stand outside the drop zone.

Lowering gear sees a lot of heat and rope wear. Check the horns or bollard for grooves, check the mounting sling and connector, and keep the device clean of grit. Some systems, like those with a winch or ratchet, also let you lift or tension, which helps with pull lines and speed lines. Learn each device's limits from the manufacturer's instructions.