Chain Slings: Strength, Versatility, and Safety for Heavy Lifting Applications

In the world of rigging and lifting, few tools are as dependable, durable, and versatile as chain slings. From steel fabrication shops and construction sites to mining operations, marine terminals, and oil & gas facilities, chain slings are a go-to solution for lifting heavy, irregular, and abrasive loads safely.

At Hercules Crane & Lifting Supplies, we supply, inspect, repair, and certify high-quality alloy chain slings built to perform in Canada’s toughest industrial environments. Understanding when and why to use chain slings — and how to use them safely — is critical to protecting workers, equipment, and loads.

This guide explains what chain slings are, where they excel, applicable Canadian regulations, and how to choose the right configuration for your lifting application.

What Are Chain Slings?

A chain sling is an assembly made from alloy steel chain with fittings such as:

• Master links

• Coupling links

• Grab hooks

• Sling hooks with latches

• Shortening clutches

Most industrial chain slings are made from Grade 80 or Grade 100 alloy chain, specifically engineered for overhead lifting. These grades provide high tensile strength, excellent resistance to abrasion, and the ability to withstand high temperatures and harsh environments.

Chain slings can be configured as:

• Single leg

• Double leg

• Triple leg

• Quad leg (four-leg)

• Adjustable (with shortening clutches)

Why Chain Slings Are Ideal for Harsh Canadian Job Sites

Canada’s industries demand lifting equipment that can handle:

• Extreme cold and temperature swings

• Rough, abrasive surfaces

• Sharp edges

• Outdoor exposure

• Heavy steel and machinery components

Unlike synthetic web slings or wire rope slings, chain slings thrive in these environments.

Key Advantages

Durability – Resistant to cuts, abrasion, and sharp edges
Heat resistance – Suitable for high-temperature environments like fabrication and foundries
Adjustability – Easy length adjustment with shortening clutches
Repairability – Individual components can be replaced and re-certified
Long service life – Ideal for repetitive heavy lifts
Visible wear – Damage and wear are easier to detect during inspection

For industries like mining, shipbuilding, structural steel, and heavy equipment maintenance, chain slings are often the safest and most economical long-term choice.

Common Applications for Chain Slings

Chain slings are widely used across Canada for:

• Lifting structural steel and beams

• Moving heavy machinery and equipment

• Rigging in fabrication shops

• Mining equipment maintenance

• Marine and shipyard lifting

• Oil & gas facility maintenance

• Precast concrete handling

• Industrial plant shutdowns and turnarounds

They are especially valuable when loads are irregular, sharp, hot, or abrasive — situations where synthetic slings would be damaged quickly.

Canadian Regulations and Standards for Chain Slings

Chain slings used for overhead lifting in Canada must comply with strict standards and regulations.

Applicable Standards and Bodies

• CSA B167 – Overhead Travelling Cranes, Hoists, and Monorails

• CSA Z150 – Safety Code on Mobile Cranes

• Provincial OHS Regulations (WorkSafeBC, Ontario MOL, CNESST, OHS Alberta, etc.)

• ASME B30.9 – Slings (commonly referenced best practice)

• Manufacturer specifications for Grade 80 and Grade 100 chain

These standards require:

• Proper identification tags showing WLL (Working Load Limit)

• Regular documented inspections

• Removal from service when wear, stretch, or damage exceeds limits

• Use of rated components only

• Proper sling angle calculations

At Hercules, our inspections and certifications align with these standards to ensure your slings remain compliant and safe for use.

Choosing the Right Chain Sling Configuration

Selecting the correct chain sling depends on:

1. Load Weight

Always know the exact load weight and ensure the sling’s Working Load Limit (WLL) exceeds it.

2. Sling Angle

As the sling angle decreases, tension increases. A 4-leg sling at a shallow angle can overload individual legs if not calculated correctly.

3. Hitch Type

• Vertical hitch

• Choker hitch

• Basket hitch

Each hitch changes the WLL of the sling.

4. Environment

Heat, chemicals, abrasion, and sharp edges all influence sling choice.

5. Adjustability Needs

If loads vary in size, a sling with shortening clutches provides flexibility and safety.

The rigging specialists at Hercules help customers engineer the right sling for their exact application — not just sell a standard assembly.

Inspection Requirements for Chain Slings

Canadian OHS regulations require regular inspection of chain slings.

What Inspectors Look For

• Excessive wear on links (measured with calipers)

• Stretched or elongated links

• Nicks, gouges, or cracks

• Heat damage or discoloration

• Bent, twisted, or deformed components

• Hook throat opening changes

• Missing or illegible identification tags

If any component fails inspection, the sling must be removed from service immediately.

One major advantage of chain slings is that damaged components can often be replaced, reassembled, and re-certified, extending the life of the sling.

Hercules Crane & Lifting Supplies offers professional sling inspections, repairs, and recertification services across Canada.

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Grade 80 vs. Grade 100 Chain Slings

Grade 100 is becoming increasingly popular because it allows for higher capacities with lighter assemblies, reducing strain on riggers and improving handling.

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Proper Storage and Handling

To maximize sling life:

• Store off the ground in a dry area

• Avoid dragging chains across concrete

• Keep away from corrosive chemicals

• Clean after use in dirty or gritty environments

• Never attempt field repairs — use certified technicians
  

Why Buy and Service Chain Slings with Hercules?

At Hercules Crane & Lifting Supplies, we don’t just sell chain slings — we support the full lifecycle:

• Custom chain sling assemblies

• Grade 80 and Grade 100 options

• Engineered configurations

• Inspection and certification

• Repairs and component replacement

• On-site rigging expertise

• Compliance with Canadian OHS regulations

Our experts work directly with safety managers, riggers, and maintenance teams to ensure the right sling is selected, used properly, and kept in safe working condition.

Chain Slings: A Long-Term Investment in Safety

When used correctly, chain slings offer unmatched durability, adaptability, and safety for Canada’s toughest lifting environments. Their resistance to damage, ease of inspection, and repairability make them one of the most cost-effective lifting solutions for heavy industry.

If your team regularly lifts steel, machinery, or abrasive loads, chain slings are not just an option — they are often the best option.

Need Help Selecting or Inspecting Your Chain Slings?

Contact Hercules Crane & Lifting Supplies to speak with a rigging expert, request an inspection, or have a custom chain sling assembly built for your application.

Safe lifting starts with the right equipment — and the right partner.