ISC Cast Pulley

ISC Cast Pulley – IS-RP05

The ISC Impact Pulley / Block range is engineered for demanding arborist rigging and lowering operations. ISC uses hot forging technology and high-quality materials to produce pulleys that are strong, durable, and rope friendly. As a result, they deliver maximum security when used in high-impact rigging systems.

These pulleys do more than look robust. They actively help absorb and manage the extreme forces created during heavy rigging tasks. Additionally, the hot-forged aluminium side plates increase strength while maintaining an excellent strength-to-weight ratio. This ensures reliable performance without unnecessary weight.

The design also focuses on rope protection and efficiency. For example, rounded edges reduce rope abrasion, while self-lubricating bushings minimise friction and improve smooth operation. Furthermore, the trusted ISC spring-lock closure system provides quick, secure attachment during setup.

Each pulley is individually marked for traceability and undergoes 100% inspection and proof testing. Consequently, you can rely on consistent quality and performance in the field. These pulleys also meet EN 12278:2007 standards and carry CE certification, ensuring compliance with professional safety requirements.

Key Features:

• Hot forged aluminium construction for maximum strength

• Designed to absorb dynamic rigging forces

• Spring-lock closure mechanism for secure use

• Corrosion-resistant anchor pin for durability

• Rounded edges to reduce rope wear

• Self-lubricating bushings for smooth performance

• High strength-to-weight ratio

• Individually serial numbered for traceability

• Fully inspected and proof tested

Specifications

Mini Cast Pulley (up to 13 mm rope)

• Length: 125 mm

• Width: 13 mm

• Height: 76 mm

• Weight: 490 g

• Min Breaking Strength: 85 kN

• Working Load Limit: 17 kN

• Finish: Green powder coated

Small Cast Pulley (13–16 mm rope)

• Length: 182 mm

• Width: 100 mm

• Height: 100 mm

• Weight: 1418 g

• Min Breaking Strength: 100 kN

• Working Load Limit: 20 kN

• Finish: Powder coated

Medium Cast Pulley (16–20 mm rope)

• Length: 220 mm

• Width: 125 mm

• Height: 100 mm

• Weight: 2006 g

• Min Breaking Strength: 150 kN

• Working Load Limit: 30 kN

• Finish: ISC red powder coated

Large Cast Pulley (20 mm rope)

• Length: 258 mm

• Width: 160 mm

• Height: 100 mm

• Weight: 3432 g

• Min Breaking Strength: 200 kN

• Working Load Limit: 40 kN

• Finish: Polished

In summary, the ISC Impact Pulley / Block range delivers exceptional strength, durability, and efficiency for professional arborist rigging. Moreover, its advanced design helps manage dynamic loads, reduce rope wear, and improve overall system performance in demanding environments.