Grade 80/100 Working Load Limits

Understanding the limits of working loads for chains is crucial for safety and efficiency in lifting operations.

Lieying Group provides professional and reliable service to ensure you get the best quality lifting chains.

WARNING

Always adhere to the Working Load Limits (WLL)! Ignoring the cautions mentioned may lead to significant injuries and property damage.

• Never exceed the loading limits stated.
• Avoid uneven loading on a single leg of a sling; always distribute the load evenly.
• Refrain from exposing the assembly to impact, rapid lifts, or abrupt halts.
• Do not tie knots or allow chains to twist.
• Inspect the chain for defects; do not use worn or damaged chains.
• Avoid fastening chains over sharp edges; use padding for protection.
• Ensure that load hooks are not tipped; the latch must not bear the load.

When using non-cradle or non-shortening grab hooks in choker applications, reduce the Working Load Limit (WLL) of the sling by 20%.

A frequently asked question by customers about our chain products is “What distinguishes grade 70, 80, 100, and 120 chains?” We clarify these differences to help you choose the right chain based on your requirements.

Note: For a full comparison chart of chain grades along with WLL, please refer to our comprehensive overview post.

Grade 70 Chain

Grade 70 chain, which is produced from heat-treated carbon steel, is often referred to as "trucker's chain." It's primarily used for tie-downs on trailers. This chain is unsuitable for overhead lifting.

Recognizable by its gold chromate finish, it meets the standards set by California Highway Patrol and the DOT. Besides transporting, it's also used in towing, logging, oil drilling, and safety applications.

Designs may be marked with 7, 70, or 700.

Grade 80

Grade 80 chain, made from heat-treated steel, boasts a high strength-to-weight ratio, making it safe and effective for overhead lifting and lifting slings. Its durability extends to uses in recovery, safety, and towing applications.

This grade is increasingly favored in the flatbed trucking sector to secure heavy industrial loads. While chain assemblies often come with specific clevis grab hooks, they are generally not approved for overhead lifting.

If you seek further details on the G80 Lifting Chain, don't hesitate to reach out.

Designs are typically embossed with 8, 80, or 800.

Grade 100

Grade 100 chain, a newer entry in our chain offerings, is increasingly preferred as a substitute for grade 80. Recognized by manufacturers as premium quality, it provides approximately 25% higher working load limits compared to grade 80, making it suitable for overhead lifting tasks.

This grade is often selected to secure flatbed loads due to its enhanced strength and compact size without compromising the working load limit.

However, similar to Grade 80, assemblies with this chain type are generally not approved for overhead lifting based on the hooks' design.

The designs are typically marked with 10, 100, or similar.

Grade 120 Chain

Grade 120 chain is another recent addition within the high-performance chain category, delivering the highest strength in the market. Its square link design increases contact between link bearing surfaces, reducing chain pressure.

This results in working load limits that are 50% higher than grade 80 and 20% above grade 100. Grade 120 chains can be used for overhead lifting, but like their Grade 80 and 100 counterparts, they are not certified for overhead lifting due to the hook designs.

This type is easily identified by its bright blue finish.

Regardless of the chain type, adherence to standards set by the National Association of Chain Manufacturers (NACM) is mandatory, which include:

• Never suspend or transport loads above people.
• Regularly inspect chains for cracks, wear, elongation, and overall suitability.
• Avoid exposing chains to extreme temperatures or harsh chemical environments, as they may degrade performance.
• Consult the manufacturer for operation beyond recommended temperature ranges (-40 °F to 400 °F).
• Take chains out of service if any link thickness falls below specified minimums.
• When combining different chain types, ensure all parts are rated at the lowest working load limit.
• Explore our comprehensive range of grade 70 transport chains, as well as grade 80, 100, and 120 tie-down and lifting chains.
• For further information on transport chains and load binders, see our offerings.

Connect with us to discuss your needs for the Lifting Chain. Our knowledgeable sales team is here to help you find the best solutions to meet your requirements.

Questions? Call our sales team at (877) 595-XXXX or email us directly. We are happy to assist you in placing an order or answering your inquiries.