Notch 3/4 inch Rigging Spring Block

The Notch 3/4″ Rigging Spring Block is a medium-sized, high-strength arborist block designed to handle demanding rigging tasks. Engineered for ropes up to 3/4” (19 mm) in diameter, it combines strength, smooth rope handling, and user-friendly operation in one reliable tool.

Built with hot-forged aluminum side plates featuring rope-friendly rounded cheeks and a precision CNC machined aluminum sheave with a wide bend radius, this block minimizes rope wear while ensuring maximum efficiency. Its low-profile two-stage captive spring pin lock makes setup and takedown fast and secure, while the high-walled design and full-diameter top improve sling protection.

Whether you’re managing complex rigging scenarios or heavy loads, the Notch Spring Block delivers 30 kN WLL and 150 kN MBS strength in a durable, lightweight design.

Key Features & Benefits

• 30 kN Working Load Limit (WLL) / 150 kN Minimum Breaking Strength (MBS)

• Hot-forged aluminum side plates with rounded, rope-friendly cheeks

• Precision CNC-machined aluminum sheave with wide bend radius to reduce rope wear

• Low-profile, secure, two-stage captive spring pin lock for quick rope loading

• High-wall, full-diameter top for improved anchor sling protection

• Wide, concave upper sheave accepts 1⅛” anchor slings

• Flared side plates help reduce twisting in complex rigging setups

Rope Capacity: Up to 3/4” (19 mm)
Strength: 30 kN WLL / 150 kN MBS
Ideal For: Arborists and rigging professionals looking for a tough, easy-to-use, and rope-friendly block.