Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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The Heat-Treated Crane Wheel Hub Free Forging is a precision-engineered forged component designed for extreme loads and repetitive motion environments in port and industrial crane systems. Manufactured from high-strength alloy or carbon steels such as 42CrMo4 or 45#, the hub delivers superior load-bearing performance, excellent fatigue resistance, and enhanced surface hardness after heat treatment. It supports flanged and solid wheel configurations, optimized for applications such as gantry cranes, RTGs, and heavy stackers operating in demanding coastal and heavy-duty environments.
Key Features:
High structural integrity from open-die free forging with directional grain flow
Quenching & tempering or normalizing treatment for wear and impact resistance
Dimensional accuracy to ensure proper fit with axles, bearings, and locking mechanisms
Suitable for integration with crane wheels or as a replacement component in wheel assemblies
Applications:
Port gantry and container cranes
Industrial bridge cranes and transfer carts
Rail-mounted stacker and reclaimer systems
| Item | Details |
|---|---|
| Product Name | Heat-Treated Crane Wheel Hub Free Forging for Heavy-Duty Port and Industrial Use |
| Material Grades | - High-strength alloy steels: 42CrMo4- Carbon steels: 45#- Delivers excellent load-bearing capacity, shock absorption, and long service life in harsh operating conditions |
| Forging Equipment | - Hydraulic hammers: 5T / 8T / 12T- 3600T open-die forging press for large-diameter, solid or hub-type forgings- Capable of forming integral hub profiles, including flanges, bores, and locking shoulders |
| Manufacturing Process | Hot Forging → Normalizing / Quenching + Tempering → Ultrasonic Testing → Rough / Semi-Finish Machining → Dimensional & Surface Inspection |
| Forging Ratio | ≥ 3.0 — Ensures directional grain alignment for improved fatigue strength and resistance to impact and wear in wheel hub applications |
| Applications | - Wheel hubs for port gantry cranes, bridge cranes, and container stackers- Crane trolley and drive wheel assemblies- Heavy-duty wheel systems in port logistics and industrial handling |
| Heat Treatment Options | - Quenched + Tempered for maximum strength and wear resistance- Normalizing for uniform grain structure and dimensional stability- Optional stress relief to reduce residual stress prior to finishing |
| Testing & Inspection | - Chemical: Spectrometer verification of alloy content- Mechanical: Hardness, tensile, yield strength, impact resistance (axial & transverse)- Ultrasonic (UT): 100% volumetric flaw inspection- Dimensional: Bore concentricity, flange parallelism, diameter roundness |
| Value-Added Services | - Pre-machining of hub bores, bolt holes, flanges, and bearing interfaces- Custom chamfering and thread preparation- Protective packaging for sea/land transport- Full material traceability: heat number, batch number, and inspection documents |
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.
Packaging & Delivery
Rust-preventive coating
Heavy-duty seaworthy wooden boxes
Custom labeling and barcoding
Global shipping support with flexible delivery terms (FOB, CIF, EXW)
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.