Overview of ZOKECRANE Overhead Crane Wheels
Manufactured by Henan Zoke Crane Co., Ltd., ZOKECRANE overhead crane wheels are forged or cast from high-tensile alloy steel grades such as 65Mn, 42CrMo, 45# steel, and ZG55. Manufactured in strict compliance with DIN, FEM, and ISO standards, our wheels feature induction-hardened tread profiles and inner flange surfaces. Designed for single girder hoists, double girder trolleys, and heavy EOT crane end carriages, ZOKECRANE wheels accommodate wheel loads ranging from 5 tons to over 100 tons.
Key Technical Specifications & Parameters
| Technical Parameter | Overhead Crane Wheel Specification |
|---|---|
| Product Type | Double Flange / Single Flange / Flangeless Travel Wheel, Geared Rim Wheel |
| Wheel Diameter (Tread D) | Ø200 mm, Ø250 mm, Ø315 mm, Ø400 mm, Ø500 mm, Ø630 mm, Ø710 mm, Ø800+ mm |
| Maximum Allowable Wheel Load | 5 Tons to 100+ Tons per wheel (Custom heavy-tonnage designs available) |
| Manufacturing Material | Forged alloy steel: 65Mn, 42CrMo, 35CrMo; Cast steel options: ZG55, ZG340-640 |
| Tread Surface Hardness | Induction quenched: HB 300–380 / HRC 40–55 (Hardened depth: 15–20mm) |
| Matching Rail Profiles | QU70, QU80, QU100, QU120, DIN 536 A45–A150, P38, P43, P50, Square bars |
| Drive Connection Options | Keyed shaft bore, internal splined hub, external gear rim, shrink-disc connection |
| Quality Inspection & NDT | 100% Ultrasonic Testing (UT), Magnetic Particle Testing (MT), hardness verification |
| Certifications & Standards | ISO 9001 Quality System, CE Certified, SGS Verified, DIN 15070 / FEM Compliant |
Core Product Advantages & Engineering Features
- High Structural Fatigue Strength: Monolithic forged steel bodies eliminate internal casting voids, blowholes, and micro-cracks, delivering superior impact resistance.
- Deep Induction Hardened Tread Layer: Medium-frequency induction quenching creates a wear-resistant tread and inner flange surface (HRC 40–55) while keeping the wheel core ductile.
- Precise Machining Prevents Rail Gnawing: Machined on precision CNC turning centers to strict diameter tolerances, ensuring balanced travel speed and zero rail-flange scraping.
- Flexible Wheel Profiles: Available in double-flange designs for overhead end carriages, single-flange designs for trolleys, and flangeless designs with side guide rollers.
Industrial Applications of Overhead Crane Wheels
ZOKECRANE heavy-duty overhead crane wheels are installed on various traveling mechanisms across heavy industries worldwide:
1. Top-Running Single & Double Girder Overhead Cranes
Serves as primary long-travel wheels mounted inside end carriages running on elevated runway steel beams.
2. Heavy Open Winch & Trolley Mechanisms
Cross-travel trolley wheels for double girder crane hoists, scrap grabbing trolleys, and magnet cranes.
3. Metallurgical Steel Mill Cranes
Heat-resistant 42CrMo forged wheels engineered for high-ambient-temperature ladle cranes, charging cranes, and soaking pit cranes.
4. Automated Workshop Material Handling
Precision-machined rail wheels for automated transfer cars, heavy manufacturing bays, and assembly line cranes.
Frequently Asked Questions (Product FAQs)
What causes flange wear and rail gnawing on overhead crane wheels?
Rail gnawing is typically caused by non-parallel wheel axles, skewed crane bridge frames, unequal wheel diameters, or rail misalignment. Using ZOKECRANE precision-machined wheel sets with hardened flanges significantly reduces friction and slows down flange degradation.
Why are 65Mn and 42CrMo forged steel preferred for overhead crane wheels?
65Mn manganese steel provides excellent hardness and wear resistance after heat treatment, making it the standard choice for medium-to-heavy duty bridge cranes. 42CrMo chromium-molybdenum alloy steel offers higher tensile strength and toughness, essential for heavy metallurgical cranes with massive wheel loads.
What is the difference between a Double-Flange Wheel and a Single-Flange Wheel?
Double-Flange Wheels feature flanges on both sides of the tread to guide the crane on top-running bridge rails, standard for main end carriages. Single-Flange Wheels feature one flange and are commonly used on trolley traverse frames or suspended hoist tracks where space is restricted.
Can ZOKECRANE produce replacement wheels to match existing shaft dimensions?
Yes. We custom-machine replacement wheels according to your exact CAD drawings, shaft keyway profiles, bearing bore specifications, or original crane manufacturer part numbers.
Export & Logistics FAQs for International Buyers
Which international markets does ZOKECRANE export overhead crane wheels to?
ZOKECRANE crane wheels and structural components are supplied globally, serving crane builders, gear motor integrators, and industrial users in Russia, Uzbekistan, the Philippines, Bangladesh, Australia, Qatar, Tanzania, Singapore, Saudi Arabia, Brazil, Nigeria, and many other global markets.
How are overhead crane wheels packaged for international sea freight shipment?
All machined treads, flanges, bore surfaces, and keyways receive heavy anti-rust oil grease and protective plastic wrapping. Complete wheel orders are vacuum-sealed in moisture-proof film and packed in heavy-duty export-standard fumigated wooden cases with internal structural bracing.
What quality test reports and certifications accompany ZOKECRANE wheel shipments?
Every shipment is accompanied by complete quality documentation, including ISO 9001 compliance, European CE certificates, EN 10204 3.1 Material Test Reports (MTR) for steel forgings, ultrasonic test reports (UT), hardness test sheets, and SGS verification upon request.
What commercial shipping terms and lead times do you offer?
We support standard international commercial terms including FOB, CIF, CFR, DDU, and DDP. Standard forged wheel blanks (Ø250mm to Ø500mm) are kept in stock with fast custom machining lead times of 10 to 15 business days; large volume or special alloy wheel orders take 20 to 30 business days.
Does ZOKECRANE supply complete wheel assemblies with bearings and axles?
Yes. In addition to individual wheel rims, we provide complete pre-assembled wheel units, including precision-machined axles, spherical roller bearings, bearing pedestals, and drive gears ready for direct bolting onto your crane frame.