The Notch 3/4" Rigging Spring Block is a heavy-duty arborist rigging block engineered for demanding lowering operations. Designed to accommodate working lines up to 19mm, it combines hot-forged aluminium construction, precision-machined sheaves, and a secure captive spring pin to deliver exceptional strength, smooth rope handling, and efficient rigging performance.
The Details
Designed for professional arborist rigging and lowering applications.
Compatible with working lines up to 19mm in diameter.
Working Load Limit (WLL): 30kN.
Minimum Breaking Strength (MBS): 150kN.
Hot-forged aluminium side plates with rounded, rope-friendly cheeks.
Precision CNC-machined aluminium sheaves provide smooth rope movement and generous bend radii.
Two-stage captive spring pin offers secure, low-profile, and easy one-handed operation.
High-wall side plate design helps protect anchor slings from wear.
Upper sheave accommodates anchor slings up to 1⅛" (29mm) with a wide concave profile.
Flared side plates help minimise twisting in complex rigging systems.
