Structured Manufacturing Data (2026)

Sheave (Pulley)

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Sheave (Pulley) used in the Other Transport Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Sheave (Pulley) is characterized by the integration of Sheave body and Bearing/bushing. In industrial production environments, manufacturers listed on CNFX commonly emphasize Cast steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A grooved wheel used to guide and support wire rope or cable in lifting and material handling systems.

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Product Specifications

Technical details and manufacturing context for Sheave (Pulley)

Definition

A sheave (pulley) is a critical component within the Jib Tip Sheave Assembly of cranes and lifting equipment. It serves as the rotating wheel with a grooved rim that guides the wire rope, changing its direction while minimizing friction and wear during lifting operations. In the jib tip assembly, sheaves are positioned at the end of the crane's jib to support the hoist rope that carries the load.

Working Principle

The sheave rotates on a bearing or bushing as wire rope passes through its groove. This rotation reduces friction between the stationary rope and the moving component, allowing efficient force transmission while preventing rope damage. In the jib tip assembly, sheaves redirect the rope from horizontal travel along the jib to vertical lifting of the load.

Common Materials

Cast steel, Forged steel, Ductile iron

Technical Parameters

Sheave diameter measured from groove bottom to opposite groove bottom (mm) Per Request

Components / BOM

Sheave body Part
Main structural component with grooved rim for rope guidance

Material: steel
Bearing/bushing Part
Allows rotation of sheave around shaft with minimal friction

Material: bronze or roller bearing steel
Groove liner Part
Optional wear-resistant insert to protect both sheave and rope

Material: polyurethane or nylon

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Sheave (Pulley).

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Jib Tip Sheave Assembly

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Luffing Rope/Sheaves

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Industrial Ecosystem & Supply Chain Structure

Complementary Systems

Downstream Applications

Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits

pressure:	N/A (mechanical component, not pressure vessel)
other spec:	Max rope tension: 10-500 kN depending on size/design, Max rotational speed: 100-2000 RPM depending on diameter/balance
temperature:	-40°C to 120°C (standard steel), -40°C to 80°C (polymer)

Media Compatibility

✓ Wire rope lifting systems ✓ Cable-driven conveyors ✓ Marine winch/crane systems

Unsuitable: High-corrosion chemical processing environments without specialized coatings

Sizing Data Required

Rope/cable diameter (mm/in)
Maximum working load (kN/lbs)
Required groove profile (V, U, or flat)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause

Groove wear and deformation

Cause: Misalignment, improper belt tension, or abrasive belt material causing accelerated wear in the sheave grooves, leading to belt slippage and reduced power transmission efficiency.

Bearing failure

Cause: Inadequate lubrication, contamination ingress, or excessive radial/axial loads causing bearing wear, overheating, or seizure, resulting in sheave wobble or complete rotation failure.

Maintenance Indicators

Audible squealing or grinding noises during operation indicating belt slippage or bearing issues
Visible wobble or vibration of the sheave during rotation suggesting misalignment or bearing wear

Engineering Tips

Implement regular alignment checks and tension adjustments using laser alignment tools and tension gauges to ensure proper belt-sheave engagement and minimize groove wear
Establish a preventive lubrication schedule with appropriate grease types and quantities, while using sealed bearings or protective covers to prevent contamination ingress

Compliance & Manufacturing Standards

Reference Standards

ISO 4183:1995 - Belt drives - Classical and narrow V-belts - Grooved pulleys (system based on datum width) ANSI/ASME B29.1 - Standard for V-Belt Drives DIN 2211 - Belt drives - V-belts and V-ribbed belts - Grooved pulleys for V-belts

Manufacturing Precision

Bore diameter: +/-0.02 mm
Groove angle: +/-0.5 degrees

Quality Inspection

Dimensional verification with coordinate measuring machine (CMM)
Hardness testing (Rockwell or Brinell) for material conformity

Factories Producing Sheave (Pulley)

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are best for sheaves in heavy-duty transport equipment?

Cast steel offers excellent strength and wear resistance for most applications, forged steel provides superior toughness for extreme loads, and ductile iron balances durability with cost-effectiveness for many industrial uses.

How does the groove liner affect sheave performance?

The groove liner protects both the sheave body and the wire rope by reducing friction and wear. Proper liner material and design extend equipment life, prevent cable damage, and maintain efficient operation in lifting systems.

What maintenance is required for sheaves in material handling systems?

Regular inspection for wear, proper lubrication of bearings/bushings, checking groove liners for deterioration, and ensuring correct alignment are essential. Replace components when wear exceeds manufacturer specifications to prevent system failure.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

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