Double Web Crane Sheave (Welded Hollow Structure)

The Double Web Crane Sheaveis designed for heavy-duty overhead crane and hoisting systems.

This sheave adopts a reinforced welded structure consisting of:

• Outer rim

• Two steel web plates

• Seamless steel pipe hub

• Dual primary welding joints

The internal hollow design reduces weight while maintaining high structural strength and stability.

Structural Design & Manufacturing Process

1️⃣ Outer Rim

The outer ring is precision-formed and machined to ensure accurate rope groove positioning and smooth wire rope operation.

2️⃣ Double Web Plates

Two steel plates are welded to the outer rim, forming a reinforced double web structure.

This design improves:

• Radial load resistance

• Structural rigidity

• Torsional strength

• Stability during high-speed rotation

3️⃣ Seamless Pipe Hub

A seamless steel pipe is welded between the two web plates, forming the central hub.

Using seamless pipe ensures:

• Uniform material structure

• Higher concentric accuracy

• Improved load transfer performance

4️⃣ Hollow Internal Structure

The central hollow design reduces overall weight without compromising load capacity, making it suitable for medium to heavy-duty applications.

Welding & Machining

• Two main welding seams ensure structural integration

• Welding is followed by stress relief (if required)

• Final precision machining of rope groove and bore ensures dimensional accuracy

Structural Advantages

Compared to single-plate welded sheaves:

• Higher rigidity due to double web structure

• Better load distribution

• Improved structural stability

Compared to fully solid sheaves:

• Lighter weight

• Reduced rotational inertia

• Improved operational efficiency

Compared to cast sheaves:

• Better crack resistance

• More reliable welded structural integrity

• Easier inspection and maintenance

Technical Specifications

• Type: Double Web Crane Sheave

• Structure: Welded Rim + Dual Web Plates + Seamless Pipe Hub

• Internal Structure: Hollow

• Welding: Dual Main Weld Seams

• Groove: Precision Machined

• Application: Hook Block / Hoisting Mechanism

Applications

• Overhead Cranes

• Gantry Cranes

• Electric Hoist Systems

• Medium & Heavy Duty Hook Blocks

• Industrial Lifting Equipment

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