Workshop Overhead Crane

Introduction

Workshop overhead cranes are essential for efficient material handling in manufacturing, automotive repair, metalworking, and assembly operations. Unlike mobile cranes, overhead bridge cranes maximize workspace efficiency by utilizing ceiling space while providing precision lifting, increased safety, and improved productivity.

This guide will help you:
✔ Understand different types of workshop overhead cranes
✔ Evaluate key specifications for your needs
✔ Compare single vs. double girder systems
✔ Learn installation, safety, and cost considerations

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1. Types of Workshop Overhead Cranes

(A) Single Girder vs. Double Girder Overhead Cranes

Feature	Single Girder	Double Girder
Load Capacity	1-20 tons	5-100+ tons
Headroom Needed	Lower (saves 20-30% space)	Higher (for heavy-duty lifting)
Durability	Good for medium-duty use	Best for heavy, frequent lifting
Cost	$5,000–$20,000	$30,000–$100,000+

Best For:

• Single Girder: Small workshops, light-to-medium loads
• Double Girder: Heavy manufacturing, steel handling

(B) Top-Running vs. Underhung Cranes

Type	Top-Running	Underhung
Installation	Runs on elevated rails	Suspended from ceiling beams
Ceiling Height	Requires more headroom	Ideal for low-clearance workshops
Load Capacity	Higher (up to 100+ tons)	Lower (up to 10 tons typically)

Best For:

• Top-Running: Large factories, heavy loads
• Underhung: Smaller workshops with height restrictions

(C) Manual vs. Electric Hoists

Type	Manual (Chain Hoist)	Electric (Wire Rope Hoist)
Operation	Hand-pulled chain	Motorized lifting
Speed	Slower (2-4 m/min)	Faster (5-20 m/min adjustable)
Best Use Case	Occasional lifting, budget setups	Frequent, high-precision lifting

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2. Key Specifications to Consider

(A) Load Capacity (1T–50T+)

• Light-duty (1-5T): Auto repair, small parts handling
• Medium-duty (5-20T): Metal fabrication, machinery moving
• Heavy-duty (20-50T+): Steel mills, large industrial plants

(B) Span & Lifting Height

• Span (3m–30m): Must match your workshop’s width
• Lifting Height (3m–20m): Ensure sufficient hook travel

(C) Duty Cycle (CMAA Class A–F)

Class	Usage Intensity	Example Applications
A (Standby)	Rare use (<25% capacity)	Maintenance shops
B (Light)	Moderate use	Assembly lines
C (Moderate)	Frequent use	Machine shops, warehouses
D (Heavy)	High-intensity	Steel processing

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3. How to Choose the Right Overhead Crane?

(A) Assess Your Workspace

✔ Ceiling Height: Minimum 6m for single girder, 8m for double girder
✔ Floor Strength: Ensure concrete can support runway loads
✔ Obstructions: Check for beams, lighting, HVAC systems

(B) Determine Load Requirements

• Maximum Weight: Include safety factor (e.g., 25% above max load)
• Lift Frequency: Occasional (manual) vs. constant (electric)

(C) Safety & Compliance

✔ OSHA/ANSI Standards: Overload protection, emergency stops
✔ CE/EN 13001 Certification: Required in EU markets
✔ Operator Training: Mandatory for electric cranes

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4. Installation & Maintenance

(A) Installation Process

• Runway Beams: Must be securely anchored to building structure
• Electrical Setup: Requires 220V/380V power supply
• Testing: Load testing (125% of rated capacity) before use

(B) Maintenance Checklist

Frequency	Task
Daily	Inspect hooks, wire ropes, brakes
Monthly	Lubricate trolley wheels, check bolts
Annually	Structural inspection, electrical test

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5. Cost Analysis

Crane Type	Price Range (USD)
Single Girder	$5,000–$20,000
Double Girder	$30,000–$100,000+
Custom Solutions	$50,000–$200,000+

Additional Costs:

• Installation ($2,000–$10,000)
• Annual maintenance ($500–$5,000)

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6. FAQ

Q1: What’s the minimum workshop height for an overhead crane?

→ 6m for single girder, 8m for double girder (underhung cranes need less).

Q2: Can I install an overhead crane in an existing building?

→ Yes, but structural reinforcement may be needed for runway beams.

Q3: How long does installation take?

→ 2-5 days for standard systems; complex setups may take weeks.

Q4: Are used overhead cranes a good option?

→ Yes, if inspected properly—check for worn wires, structural damage, and motor condition.

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Conclusion: Ready to Choose Your Workshop Overhead Crane?

Selecting the right system depends on:
✔ Workspace dimensions (ceiling height, span)
✔ Load requirements (weight, frequency)
✔ Budget (new vs. used, installation costs)

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