Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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Heat-Treated Free Forged Crane Wheel Hub for Heavy-Duty Industrial Applications. Our heat-treated free forged crane wheel hubs are engineered for extreme load-bearing performance in demanding industrial and port handling environments. Produced through high-precision open-die forging, these hubs feature superior strength, fatigue resistance, and dimensional stability under continuous heavy-duty operations.
Key Features:
Material Options: Available in high-strength alloy steels such as 42CrMo4 and carbon steels like 45#, ensuring durability and shock resistance in harsh working conditions.
Forging Process: Free forging (open-die) allows for the creation of large, integrated hub geometries with optimized internal grain flow and minimal material defects.
Heat Treatment: Quenching and tempering processes enhance hardness, tensile strength, and wear resistance; normalizing is also available for improved microstructure uniformity.
Precision Machining: Capable of rough and semi-finish machining of hub bores, flanges, bolt holes, and bearing interfaces to meet exact tolerance requirements.
Dimensional Range: Customizable sizes to fit a wide variety of crane types including gantry cranes, bridge cranes, and container stackers.
Inspection & Testing: 100% ultrasonic testing, mechanical property validation (tensile, yield, impact), and dimensional checks ensure consistent quality and performance.
Typical Applications:
Port and shipyard gantry crane wheel hubs
Bridge crane trolley and drive wheel assemblies
Industrial crane wheel systems for material handling, mining, and heavy transport
Our forged crane wheel hubs are designed to withstand repeated high-impact loading, abrasive working conditions, and long-term operation without deformation or failure. We offer full traceability and tailored production to match your specific operational requirements.
| Item | Details |
|---|---|
| Product Name | Heat-Treated Free Forged Crane Wheel Hub for Heavy-Duty Industrial Applications |
| Material Grades | - High-strength alloy steels: 42CrMo4 - Carbon steels: 45# - Offers outstanding load-bearing capacity, shock absorption, and extended service life under high-impact, heavy-duty conditions |
| Forging Equipment | - Hydraulic hammers: 5T / 8T / 12T - 3600T open-die forging press for large-diameter hub-shaped forgings - Capable of forming integrated hub geometries with flanges, bores, and locking features |
| Manufacturing Process | Hot Forging → Heat Treatment (Normalizing / Quenching + Tempering) → Ultrasonic Testing → Rough / Semi-Finish Machining → Dimensional & Surface Inspection |
| Forging Ratio | ≥ 3.0 — Ensures directional grain flow for enhanced fatigue strength, impact resistance, and wear resistance in rotating crane components |
| Applications | - Wheel hubs for gantry cranes, bridge cranes, and container stackers - Trolley wheels and drive wheel hubs for crane systems - Industrial wheel hubs for material handling, mining, and port logistics |
| Heat Treatment Options | - Quenched + Tempered for superior mechanical performance and surface hardness - Normalizing for improved grain uniformity and dimensional control - Optional stress-relief annealing to minimize residual stress and improve machinability |
| Testing & Inspection | - Chemical: Alloy composition verified by spectrometer - Mechanical: Hardness, tensile strength, yield strength, and impact toughness (axial & transverse) - Ultrasonic Testing (UT): 100% volumetric defect detection - Dimensional: Bore concentricity, flange flatness, roundness, and surface roughness inspection |
| Value-Added Services | - Pre-machining of hub bores, bolt holes, and bearing interfaces - Complete material traceability: heat number, batch number, and certified inspection records |
The steel forgings production flow:
Raw material steel ingot into warehouse(test the chemical composition) → Cutting→ Heating(Furnace temperature test) → Heat treatment after forging(Furnace temperature test) Discharge the furnace(blank inspection)→ Machining→ Inspection(UT,MT,Visal dimension, hardness)→ QT→ Inspection(UT, mechanical properties, hardness, grain size)→ Finish machining→ Inspection (dimension)→ Packing and Marking(steel stamp, mark)→ Storage Shipment.
Frequently Asked Questions (FAQs)
1. What is your forging weight range?
We produce forged parts ranging from 100 kg to 7000 kg.
2. Do you provide heat treatment and machining?
Yes, we offer full in-house heat treatment, rough, and finish machining services.
3. Which industries do you supply to?
We serve wind energy, heavy equipment, port machinery, transmission systems, and more.
4. What is your production lead time?
With stock: Around 30 days
Without stock: 40–45 days
5. Where is your factory located?
In Changzhou City, near Shanghai, with shipping via Shanghai Port.
Request a Quote
Please send your technical drawings and requirements to us. Our engineers will review and provide you with a professional quotation and solution shortly.