Hot-Rolled Crane Sheave
Our hot-rolled crane sheaves are critical load-bearing and rope-guiding components for lifting machinery. Manufactured from high-grade precision steel and formed with precise hot-rolling processes, they deliver high strength, relatively low self-weight, and excellent wear resistance. Suitable for demanding environments such as hot-rolling mills, metallurgy, ports, and chemical plants. Standard capacities cover 5T–100T, with non-standard customization available on request.
Structure & Main Components
Wheel body: Thick hot-rolled body with precision-ground groove; welded reinforcement and ribs for large diameters (D>800 mm).
Axle: High-strength alloy steel, heat-treated for improved bending and shear resistance.
Bearings: Spherical roller bearings or high-precision deep-groove ball bearings with lubrication channels.
Hub: Forged/machined hub with keyed or interference fit connection to the axle.
Seals: Dual-lip oil seals plus dust covers to prevent ingress of dust and contaminants.
Technical Standards & Quality Control
Material and chemical composition meet GB/T 700 / GB/T 11352 standards.
Weld quality and procedures comply with GB/T 19804; critical welds are inspected by UT/MT.
Coating thickness ≥100 μm; corrosion resistance verified by neutral salt spray testing.
Post-assembly radial runout ≤ 0.1 mm/m.
Load test: 1.25× rated load without permanent deformation.
Retirement criteria: groove bottom wear > 3 mm, rim thickness loss ≥ 20%, or presence of cracks/serious deformation.
Manufacturing Process
Material inspection: Spectral analysis and mechanical tests to verify chemical composition and strength.
Heating: 1000–1200°C preheating to ensure forgeability.
Hot rolling forming: Specialized equipment forms the thick wheel body according to preset parameters for each capacity.
Precision groove grinding: Ensures accurate groove radius and smooth surface.
Staged cooling: Controlled cooling to avoid internal stresses and cracks.
Quench & temper: Improves hardness, strength and wear resistance.
Surface anti-corrosion treatment: Acid pickling, phosphating and multi-layer coating with anti-rust oil.
Final inspection & packing: Dimensional checks, NDE, rotation test and secure, anti-corrosion packaging.
Models & Key Specifications
| Item | Description |
|---|---|
| Product Name | Crane Sheave |
| Brand | GL |
| Model / Capacity | 5T / 10T / 20T / 30T / 50T / 80T / 100T (non-standard customization supported) |
| Main Materials | Thickened precision steel (Q235B) or cast steel; optional stainless steel / alloy / heat-resistant steel |
| Manufacturing Process | Hot-rolled forming + precision groove grinding + quench & tempering |
| Surface Treatment | Acid pickling + phosphating + primer/top coat (coating ≥100 μm) + anti-rust oil |
| Groove Compatibility | Wire rope contact area ≥ 80% (supports multiple rope diameters) |
| Operating Temperature | -20°C to +40°C (special materials available for extreme temperatures) |
| Standards & Testing | Conforms to GB/T 27546-2011, GB/T 700 etc.; welds inspected by UT/MT, NDE and mechanical testing |
Selection Guide
5T–20T: Small-to-medium workshops, warehousing and light lifting — standard thickened steel and standard anti-corrosion.
20T–50T: Heavy manufacturing and metallurgy — enhanced heat treatment and thicker wheel bodies.
50T–100T: Ports and heavy-duty installations — welded reinforced wheel bodies, high-precision bearings and composite anti-corrosion treatment.
Core Advantages
Integral hot-rolled forming: Thickened wheel body for superior impact and deformation resistance.
Precision-grooved rim: Smooth, burr-free surface with groove curvature matched to wire rope profile to minimize rope wear and improve smooth operation.
Advanced heat treatment: Quenching and tempering (quench + high-temperature temper) to increase hardness and wear resistance.
Composite anti-corrosion: Acid pickling + phosphating followed by multi-layer coating (coat ≥100 μm) and anti-rust oil for extended service life.
Modular components: High-strength axle, precision bearings, and dual-lip oil seals with dust covers for easy maintenance.
Customizable: Dimensions, materials, sealing systems, and surface treatments can be tailored to operating conditions.
Application Scenarios
Hot-rolling and steel production lines
Port and terminal lifting & handling
Petrochemical and heavy equipment installation
General workshop lifting, warehousing, and logistics
Workflow
Requirement gathering → Design & 3D drawing → Prototype → Mechanical & dimensional testing → Mass production → Delivery & after-sales support.
Lead Time Reference
Standard custom samples: 7–15 working days (final lead time depends on confirmed design and production capacity).
Maintenance
Check and replenish grease weekly; perform a full grease replacement monthly.
Weekly visual inspection of groove wear, coating integrity and seals.
Check bearing housing seals and fasteners monthly; replace seals or re-torque as needed.
Inspect gearbox and reducer oil and gears every 6 months; change oil if required.
Maintain a service logbook documenting inspections, findings and corrective actions.
Installation
Ensure axle alignment with the wire rope; rope deviation angle ≤ 5°.
Coaxiality of sheave groups to hoist drum ≤ 0.5 mm/m.
Fasteners torqued to specification and secured with anti-loosening measures.
Perform no-load run and then incremental load testing during commissioning.
Customization Services
Customization Scope: Dimensions (Ø100–≥Ø2000 mm), groove profile (U/V/Trapezoid), materials (stainless, heat-resistant, alloy), advanced heat treatments (e.g., carburizing + quench) and specialized seals (labyrinth, magnetic) or ceramic/coating options.
FAQs
Which wire rope sizes are compatible with the groove?
A: Standard designs cover common rope diameters — please provide exact rope diameter so we can confirm groove radius and contact area.
Can the sheave operate long-term in highly corrosive environments?
A:Yes — choose enhanced anti-corrosion materials or ceramic/coating options and increase inspection frequency.
When should the sheave be replaced?
A: Replace when groove bottom wear > 3 mm, rim thickness loss ≥ 20%, or visible cracks/serious deformation.