Heavy Duty Lifting Sheave Q355B, Winch Rope Guide Pulley

1.Product Description

This Q355B sheave is a heavy-duty pulley designed for hoisting and winch systems. It is precision machined with rope groove for Φ11.43 mm steel wire rope.
Material: Q355B high strength low alloy steel, good impact resistance for offshore & crane lifting service.

2.Product Parameter

3.Product Advantage

(1) High Load Capacity & Toughness Q355B low alloy steel provides excellent yield strength and impact resistance, suitable for heavy cyclic lifting loads, not easy to crack under shock load.

(2) Precision CNC Machined Rope Groove Custom R6.15 groove perfectly matches Φ11.43mm steel wire rope. Reduce rope extrusion, wear and fatigue damage, extend wire rope service life.

(3) High-precision Bore Machining Φ200J7 fine machined bore (Ra1.6μm) ensures stable fit with shaft, low rotation vibration, reliable running performance.

(4) Optimized Transition Structure Smooth rounded transitions (R20, R50) eliminate stress concentration points, improve structural durability and anti-fatigue property.

(5) Great Weldability & Cost Performance Q355B has good welding performance, convenient for secondary processing; compared with alloy steel, it balances strength and cost.

4.Product Scenarios

• Offshore winch & marine lifting equipment
• Crane, hoist, mobile crane lifting system
• Construction heavy lifting machinery
• Mining & port cargo handling equipment
• Steel plant heavy-duty pulley blocks