30 Ton Overhead Crane

Introduction to 30 Ton Overhead Cranes

Dongqi Crane’s 30 ton overhead crane represents the ideal balance between heavy-duty capacity and operational efficiency for industrial applications. As a leading Chinese manufacturer with CE and ISO certifications, we offer premium-quality 30 ton overhead cranes for sale at competitive prices, along with comprehensive technical support.

Advanced Technical Features of Dongqi 30 Ton Overhead Cranes

Dongqi Crane’s 30 ton overhead cranes incorporate cutting-edge engineering innovations to deliver superior performance in heavy industrial applications. Below we detail the advanced technical specifications that set our cranes apart:

1. Enhanced Structural Engineering

Girder System

• Optimized Box Girder Design:
• Fabricated from high-grade Q345B steel plates (δ=8-20mm)
• Internal reinforcement with precision-welded diaphragms (spaced at 1.5-2m intervals)
• Pre-cambered profile (1/1000 of span) to compensate for deflection under full load
• End Carriages:
• Forged steel wheels (ZG340-640 material, HRC 50-55 hardness)
• Double-flange design with 30% thicker flanges than standard
• SKF/FAG premium bearings (L10 life >60,000 hours)

Runway System

• Precision-Aligned Rails:
• QU80/QU100 rail profiles
• Laser-leveled installation (±1mm/m tolerance)
• Continuous weldment for vibration reduction

2. High-Performance Hoisting Mechanism

Wire Rope Assembly

• Premium Rope Construction:
• 6×36WS+IWR rotation-resistant rope (DIN 3069 standard)
• Grade 1960 tensile strength with zinc coating
• Automatic lubrication system extends service life 3X

Drum & Sheave System

• CNC-Machined Drum:
• Groove pitch tolerance ±0.5mm
• 3:1 safety factor on wall thickness
• Dual-end support with tapered roller bearings
• Sheave Assembly:
• Ductile iron (QT600-3 material)
• Diamond-groove profile reduces rope wear
• Hardened surface (HRC 45-50)

Braking System

• Primary Brake:
• Dual-caliper disc brake (600mm diameter)
• Fail-safe spring-applied design
• Automatic wear compensation
• Secondary Brake:
• Emergency mechanical brake
• Independent activation system
• 200% rated torque capacity

3. Precision Drive & Control Systems

Travel Drive Units

• AC Frequency Control:
• IE3 premium efficiency motors
• Helical gear reducers (AGMA Class 12)
• Dynamic braking with energy recovery

Control Architecture

• Smart Controller:
• PLC-based with CANbus communication
• 16-bit resolution for smooth speed regulation
• 5-stage acceleration/deceleration profiles
• Positioning Technology:
• Absolute encoder (17-bit resolution)
• Anti-sway algorithm (±3mm at hook)
• Laser guidance option (±1mm repeatability)

4. Advanced Electrical Systems

Power Distribution

• Enclosed Conductor System:
• IP55 protection rating
• Harmonic filters (THD <5%)
• Surge protection (IEC 61643-11)

Safety Circuits

• Dual-Channel Safety:
• Category 4/PLe safety relays
• Emergency stop with mechanical latching
• Ground fault monitoring (<30mA sensitivity)

5. Environmental Adaptations

Extreme Conditions

• Temperature Range:
• Standard: -20°C to +50°C
• Extended: -40°C to +60°C (with heated/cooled components)
• Corrosion Protection:
• ISO 12944 C5-M coating system
• Stainless steel fasteners (A4-80)
• Cavity wax injection for internal protection

6. Smart Features & Connectivity

IoT Integration

• Remote Monitoring:
• Real-time load monitoring
• Usage statistics and predictive maintenance
• Cloud-based data logging

Automation Ready

• Industry 4.0 Interfaces:
• OPC UA protocol
• PROFINET/EtherCAT options
• RFID tool identification

7. Custom Engineering Options

Special Configurations

• Tandem Lifting:
• Dual-hoist synchronization
• Load balancing system
• Master-slave control
• Special Attachments:
• Motorized rotating hooks
• Vacuum lifting systems
• C-hooks for coil handling

Performance Specifications

Parameter	Specification
Hoisting Speed	0.5-8 m/min (VFD adjustable)
Cross Travel	5-32 m/min
Long Travel	10-63 m/min
Positioning Accuracy	±3mm (standard), ±1mm (with laser)
Noise Level	<75 dB(A) at 1m
Duty Cycle	Up to 300 starts/hour

Quality Assurance

1. Material Certification:

• Mill test reports for all structural steel
• NDT reports (UT/MT/PT) for critical welds

1. Testing Protocol:

• 125% static load test (4 hours)
• 110% dynamic load test (10 cycles)
• 10,000-cycle endurance test

1. Documentation:

• Complete CE technical file
• Load test videos
• Material traceability records

Dongqi’s 30 ton overhead cranes combine these advanced features with robust engineering to deliver reliable performance in the most demanding industrial environments. Our technical team can further customize any specification to meet your exact operational requirements.

30 Ton Overhead Crane Price Analysis

Base Price Range

Configuration	Price Range (USD)
Standard double girder	$35,000 – $75,000
Heavy duty version	$55,000 – $120,000
European-style design	$65,000 – $140,000
Explosion-proof model	$85,000 – $180,000

Price Factors Breakdown

1. Structural Components (40-50% of total cost)

• Girder type (standard vs. European)
• Span length (+$1,200-$2,500 per extra meter)

1. Hoisting System (30-35% of cost)

• Wire rope vs. chain hoist
• Special features (explosion-proof, high-temp)

1. Controls & Electricals (15-20% of cost)

• Basic pendant vs. radio remote
• Automation interfaces

1. Installation & Commissioning (10-25% of equipment cost)

• Site preparation
• Testing and certification

Tonnage Comparison: Selecting the Right Capacity

20 Ton vs. 30 Ton vs. 50 Ton Overhead Cranes

Parameter	20 Ton	30 Ton	50 Ton
Ideal Application	Medium manufacturing	Heavy industry	Extreme duty
Structural Weight	8-12 tons	12-18 tons	20-30 tons
Power Consumption	15-20kW	22-30kW	35-50kW
Price Comparison	$25k-$60k	$35k-$120k	$60k-$200k
Typical Duty Cycle	150 starts/hr	200 starts/hr	150 starts/hr

Why Choose 30 Ton?

• Optimal capacity for most heavy industrial applications
• Better value than 50-ton cranes for sub-30-ton loads
• More versatile than 20-ton models for growing operations

Where to Buy 30 Ton Overhead Crane for Sale?

Purchasing Options from Dongqi Crane

1. Direct Factory Order

• Best pricing (15-30% below market)
• Full customization available
• Quality assurance from source

1. Regional Distributors

• Local inventory for faster delivery
• On-site technical support

1. Online Platforms

• Verified listings on Alibaba
• Custom quotes via Made-in-China

Why Customers Choose Dongqi?

✅ 30+ years specialized manufacturing experience
✅ 500+ successful 30-ton crane installations
✅ 18-month comprehensive warranty
✅ Turnkey solutions from design to installation

Industry Applications

Best-Suited Operations for 30 Ton Cranes

• Steel mills: Coil handling, ladle transfer
• Power plants: Turbine maintenance
• Shipbuilding: Engine installation
• Mining: Crusher maintenance
• Heavy manufacturing: Press die changes

Frequently Asked Questions

Q: What’s the lead time for a 30 ton crane?
A: 30-60 days for standard models; 60-90 days for custom solutions

Q: Can existing building structures support a 30 ton crane?
A: Our engineers can conduct structural assessments and provide reinforcement solutions

Q: What maintenance is required?
A: Annual professional inspection + quarterly lubrication (we provide maintenance plans)

Next Steps to Purchase

1. Submit Requirements: Provide span, height, and usage details
2. Receive Proposal: Customized solution with quotation
3. Factory Acceptance Test: Optional equipment inspection
4. Delivery & Installation: Our team handles turnkey implementation

Contact Dongqi Crane today for your 30 ton overhead crane solution!

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