Overview of ZOKECRANE Gantry Crane Wheel Assemblies
Manufactured by Henan Zoke Crane Co., Ltd., ZOKECRANE gantry crane wheel sets are forged or cast from high-strength alloy steel (such as 65Mn, 42CrMo, 35CrMo, and ZG55). Engineered in strict accordance with DIN, FEM, and ISO international standards, our wheel assemblies incorporate deep induction-hardened treads, heavy-duty spherical roller bearings, precision-machined alloy shafts, and rugged bearing housing blocks. Designed for single girder gantry cranes, double girder Goliath cranes, rail-mounted container cranes (RMG), and rubber-tired gantry cranes (RTG), ZOKECRANE wheels accommodate individual wheel loads from 5 tons to over 100 tons.
Key Technical Specifications & Parameters
| Technical Parameter | Gantry Crane Wheel Specification |
|---|---|
| Product Type | Double Flange / Single Flange / Flangeless Wheel Assembly, Corner Bearing Block Wheel Set |
| Wheel Diameter (Tread D) | Ø300 mm, Ø350 mm, Ø400 mm, Ø500 mm, Ø630 mm, Ø710 mm, Ø800 mm, Ø900+ mm |
| Maximum Allowable Wheel Load | 5 Tons to 100+ Tons per wheel (Custom heavy-tonnage ratings available) |
| Manufacturing Material | Forged alloy steel: 65Mn, 42CrMo, 35CrMo; Cast steel options: ZG55, ZG340-640 |
| Tread Surface Hardness | Induction quenched: HB 300–380 / HRC 45–55 (Hardened depth: 15–20mm) |
| Matching Rail Profiles | QU70, QU80, QU100, QU120, DIN 536 A65–A150, P43, P50, CR104, Square rails |
| Bearing Integration | SKF / FAG / NSK / Heavy-duty spherical roller bearings with double lip grease seals |
| Drive Connection Options | External gear rim drive, internal splined hub, keyed shaft, direct hollow-shaft reducer mount |
| Certifications & Standards | ISO 9001 Quality System, CE Certified, SGS Verified, DIN 15070 / FEM Compliant |
Core Product Advantages & Engineering Features
- Forged Alloy Strength for Heavy Wheel Loads: Monolithic steel forgings eliminate internal blowholes and porosity, providing exceptional fatigue strength and resistance to mechanical impact under maximum load capacity.
- Deep Induction Hardened Tread Layer: Precision medium-frequency heat treatment creates a deeply hardened, wear-resistant tread and flange surface (HRC 45–55) while keeping the wheel core ductile to absorb dynamic shocks.
- Weatherproof & Dustproof Bearing Sealing: Equipped with heavy-duty spherical roller bearings protected by multi-lip lip seals and dust caps, ensuring long maintenance-free service life in outdoor sand, rain, and dust.
- Precision Machining Prevents Rail Gnawing: Bored and turned on giant CNC machining centers in a single clamping setup to maintain absolute shaft parallelism and eliminate rail-flange scraping.
Industrial Applications of Gantry Crane Wheel Assemblies
ZOKECRANE heavy-duty gantry crane wheel assemblies and travel wheel blocks are critical load-transmitting mechanisms utilized across diverse outdoor industrial facilities globally:
1. Outdoor Double Girder Gantry Cranes (Goliath Cranes)
Serves as primary ground travel wheel sets on heavy gantry end trucks operating in stockyards, steel fabrication yards, and precast concrete plants.
2. Shipyard Goliath & Portal Cranes
Ultra-heavy forged wheel assemblies designed to support massive deadweights on shipbuilding gantry cranes and dockside portal slewing cranes.
3. Rail-Mounted Container Gantry Cranes (RMG)
High-precision, wear-resistant travel wheel assemblies operating on ground rails in port container terminals and intermodal logistics hubs.
4. Semi-Gantry Cranes & Rail Transfer Cars
Ground-level travel wheel sets for semi-gantry crane legs and heavy cross-bay industrial transfer cars.
Frequently Asked Questions (Product FAQs)
What causes rapid flange wear and rail gnawing on outdoor gantry crane wheels?
Outdoor rail gnawing is caused by factors such as non-parallel wheel axles, track settlement, thermal expansion of long ground rails, or wind-induced crane skewing. ZOKECRANE precision CNC-machined wheel assemblies with induction-hardened flanges significantly reduce side friction and extend both rail and wheel service life.
Why are forged steel wheels (65Mn / 42CrMo) recommended over cast wheels for gantry cranes?
Gantry cranes operate outdoors under continuous heavy dynamic loads and wind forces. Forged Steel Wheels undergo high-pressure metal compacting, offering up to 200% higher fatigue resistance and impact toughness than cast wheels, effectively preventing rim breakage and surface spalling.
How do ZOKECRANE wheel assemblies handle high outdoor dust and moisture?
Our gantry wheel bearing blocks feature heavy-duty spherical roller bearings enclosed in cast steel pedestals with double-lip oil seals, O-rings, and external grease nipples, preventing water ingress, sand contamination, and premature bearing failure.
Can ZOKECRANE supply gear-driven wheel assemblies complete with drive reducers?
Yes. We supply complete turn-key travel wheel assemblies, including external geared rim wheels, splined shaft wheels, torque arms, three-in-one gear motors, and storm anchor accessories ready for direct bolting onto your gantry leg structure.
Export & Logistics FAQs for International Buyers
Which international markets does ZOKECRANE export gantry crane wheel assemblies to?
ZOKECRANE crane components and heavy travel mechanisms are supplied globally, serving crane manufacturers, port operators, and industrial contractors in Russia, Uzbekistan, the Philippines, Bangladesh, Australia, Qatar, Tanzania, Singapore, Saudi Arabia, Brazil, Nigeria, and many other global markets.
How are heavy gantry crane wheel assemblies packaged to prevent corrosion during ocean transport?
All machined treads, flanges, axle journals, and keyways receive thick anti-rust grease coatings and protective plastic wrapping. Complete wheel assemblies are vacuum-sealed in moisture-proof plastic film and anchored inside heavy-duty export-standard fumigated wooden cases with internal structural bracing.
What quality control documents and certificates accompany ZOKECRANE wheel shipments?
Every shipment is accompanied by a complete quality control package, including ISO 9001 compliance, European CE certificates, EN 10204 3.1 Material Test Reports (MTR) for steel forgings, ultrasonic test reports (UT), hardness inspection sheets, and SGS third-party verification upon request.
What commercial shipping terms and manufacturing lead times do you offer?
We support standard international commercial terms including FOB, CIF, CFR, DDU, and DDP. Standard forged wheel blanks (Ø350mm to Ø630mm) are kept in semi-finished stock with fast custom machining lead times of 10 to 15 business days; large-volume or heavy-tonnage wheel assemblies take 20 to 30 business days.
Can ZOKECRANE custom-manufacture replacement gantry wheel assemblies based on old crane drawings?
Yes. Our engineering department can custom-machine replacement wheel sets directly according to your original CAD drawings, shaft keyway profiles, bearing block hole centers, or worn sample measurements for existing gantry cranes.