Overview of ZOKECRANE Crane Sheave Assemblies
Manufactured by Henan Zoke Crane Co., Ltd., ZOKECRANE crane sheaves are fabricated using high-grade forged alloy steel, hot-rolled steel plates, or ductile cast iron. Engineered in strict compliance with DIN, FEM, and ISO international standards, our wire rope sheaves feature induction-hardened rope grooves, high-precision roller bearings, and exceptional dynamic balance. Available in diameters ranging from Ø200 mm to over Ø2,000 mm, ZOKECRANE provides custom sheave solutions for light-duty hoists to heavy metallurgical cranes.
Key Technical Specifications & Parameters
| Technical Parameter | Crane Sheave Specification |
|---|---|
| Product Type | Forged Steel Sheave / Hot-Rolled Steel Sheave / Cast Iron Sheave |
| Sheave Outer Diameter (D) | Ø200 mm to Ø2,000+ mm (Custom engineered sizes available) |
| Matching Wire Rope Diameter | Ø6 mm to Ø60+ mm (Precision groove radius profiling) |
| Manufacturing Material | Q355B / Q355D steel plate, 45# forged steel, 42CrMo alloy steel, QT500-7 ductile iron |
| Rope Groove Hardness | Quenched & tempered groove surface: HRC 45 – HRC 55 (Depth ≥ 2-5mm) |
| Manufacturing Standard | DIN 15061, DIN 15062, FEM, ISO, GB/T 27550 |
| Bearing Integration | Heavy-duty deep groove ball bearings / spherical roller bearings with grease seals |
| Surface Treatment | Shot-blasting, anti-rust primer, high-durability epoxy finish coating |
| Certifications & Compliance | ISO 9001 Quality System, CE Certified, SGS Verified |
Core Product Advantages & Engineering Features
- Groove Hardening for Extended Rope Life: Precision induction-hardened rope grooves (HRC 45–55) dramatically reduce friction and prevent premature groove indentation, extending wire rope service life.
- High Structural Integrity & Weight Reduction: Hot-rolled steel plate sheaves offer high strength-to-weight ratios compared to cast sheaves, reducing rotational inertia and crane trolley loads.
- Precision Dynamic & Static Balance: Every sheave wheel undergoes rigorous dynamic and static balancing to ensure smooth rotation at high speeds with zero vibration.
- Heavy-Duty Sealed Bearings: Fitted with premium sealed roller bearings that prevent dust and moisture ingress, ensuring long maintenance-free lubrication intervals.
Industrial Applications of Crane Sheaves
ZOKECRANE crane sheaves and wire rope pulley blocks are critical load-transmitting components utilized across diverse lifting equipment and heavy industries globally:
1. Overhead & Gantry Cranes
Serves as main trolley pulleys, hook block sheaves, and equalizing sheaves on single-girder, double-girder, and container gantry cranes.
2. Port & Marine Cranes
Heavy-duty corrosion-resistant wire rope sheaves used in ship-to-shore (STS) quay cranes, rubber-tired gantry (RTG) cranes, and offshore deck cranes.
3. Metallurgical & Foundry Cranes
Heat-resistant forged steel sheaves operating in high-temperature melt shops, casting bays, and ladle transfer cranes.
4. Construction Hoists & Heavy Winches
Deployed in tower cranes, mine hoists, cableway systems, and heavy offshore winches for smooth cable guidance.
Frequently Asked Questions (Product FAQs)
What is the difference between Hot-Rolled Sheaves and Cast Iron Sheaves?
Hot-Rolled Steel Sheaves are made by stamping and welding high-strength steel plates. They offer higher structural toughness, lighter weight, and no internal casting defects (like air holes or cracks). Cast Iron Sheaves are economical for small-to-medium standard hoists but are heavier and less resistant to severe mechanical impact.
Why is rope groove hardness critical for a crane sheave?
If the sheave groove is too soft, the hard wire rope will press grooves into the metal over time, leading to pinching, fraying, and rapid wire rope destruction. Hardening the groove surface to HRC 45–55 prevents groove deformation and maximizes the operational lifespan of both the sheave and the wire rope.
When should a crane sheave be replaced?
A sheave must be replaced if: groove wall wear exceeds 20% of original wall thickness, groove bottom wear exceeds 50% of wire rope diameter, internal cracks or flange chipping occur, or if the groove contour no longer matches the wire rope profile.
Can ZOKECRANE produce custom sheaves according to customer drawings?
Yes. We specialize in custom manufacturing crane sheaves, pulley groups, and equalizing sheaves according to your exact CAD drawings, shaft dimensions, bearing preferences, or OEM part numbers.
Export & Logistics FAQs for International Buyers
Which international markets does ZOKECRANE export crane sheaves to?
ZOKECRANE lifting accessories are supplied worldwide, serving crane original equipment manufacturers (OEMs) and industrial maintenance buyers in Russia, Uzbekistan, the Philippines, Bangladesh, Australia, Qatar, Tanzania, Singapore, Saudi Arabia, Brazil, Nigeria, and many other global markets.
How are crane sheaves packaged to prevent rust and damage during ocean freight?
Machined rope grooves, bearing bores, and shaft seats are treated with anti-rust oil grease and wrapped in protective film. Sheave assemblies are vacuum-sealed in heavy-duty plastic sheeting and packed in export-standard fumigated wooden cases with internal structural bracing.
What quality test reports accompany ZOKECRANE sheave shipments?
Every shipment is accompanied by complete quality assurance documentation, including ISO 9001 compliance, CE certificates, EN 10204 3.1 Material Test Certificates (MTC), dimensional inspection sheets, dynamic balance reports, and hardness test reports verified by SGS upon request.
What shipping terms and lead times do you offer for sheave orders?
We provide standard international trading terms including FOB, CIF, CFR, DDU, and DDP. Standard forged or rolled sheaves typically have manufacturing lead times of 15 to 25 business days depending on order volume and custom machining requirements.
Does ZOKECRANE supply complete sheave assemblies with shafts and bearings?
Yes. In addition to individual sheave wheels, we provide complete pre-assembled sheave groups including precision-machined shafts, internal roller bearings, grease nipples, bearing covers, and mounting brackets ready for direct installation onto your crane trolley or hook block.