Lifting Chain

Lifting chain is designed for use with hoists, cranes, winches, and other material handling equipment. It is also used in rigging slings and for lashing. There are two standard grades for lifting chain: grade 80 lifting chain and grade 100 lifting chain. Other grades of lifting chain may also be available from some suppliers.

Grade 80 lifting chain is made from alloyed steel and is specifically designed for overhead lifting applications. This grade of lifting chain has a good strength-to-weight ratio and excellent durability. Grade 100 lifting chain is also made of alloyed steel, but is hardened and tempered for superior durability and fatigue resistance. Most Grade 100 lifting chain is made of Herc-Alloy 800, a heat-treated alloy with very high strength. Although many types of chain fittings are available, Grade 80 fittings should not be used with Grade 100 chain.

Selecting lifting chain requires an analysis of performance specifications. Lifting chain size is measured in inches (in.) or millimeters (mm). Common sizes include 7/32 in. (5.5 mm), 9/32 in. (7.0 mm), 5/16 (8.0 mm), 3/8 (10.0 mm), 1/2 in. (13.0 mm), 5/8 in. (16.00 mm), 3/4 in. (20.0 mm), 7/8 in. (26 mm), and 1 1/4 in. (32.0 mm). Nominal dimensions include inside length and inside width. Other important considerations for choosing lifting chain are the approximate number of links per foot (ft.) and the approximate weight (lbs.) per 100 ft.

When working with lifting chain, working load limit and rated capacity vary with the angle of use and the number of lifting chain used in a sling. For example, a single 5.5 mm lifting chain may be rated for 2100 lbs. at 90 degrees. A double 5.5 mm lifting chain may be rated for 60, 45, or 30 degree use with working loads of 3600, 3000, and 2100 lbs. respectively.

Lifting chain should meet requirements from organizations such as the U.S. Occupational Safety and Health Administration (OSHA), the American Society for Testing Materials (ASTM), and the International Standards Organization (ISO). Working load limits for Grade 80 and Grade 100 lifting chain are based on a 4 to 1 design factor from ISO.

• User Manual for RUD Sling Chains
  Determined usage for lifting and transportation of loads 1. Selection of sling chains 1.1 The weight of the corresponding load must be known. 1.2 The center of gravity from the load must be known. 1.3...
  (read more)
• Ergonomic Lifting Study: Using Ergonomic Assist Devices to Increase Productivity and Reduce Product Damage
  The following summary is based on a study performed by the Rochester Institute of Technology. The complete study is available by contacting Gorbel at (800) 821-0086 or at www.gorbel.com/gforce/study....
  (read more)
• VIP Lifting Advantages
  VIP Stamping - on every chain link VIP-stamped chains are manufactured with smaller tolerances in the inner width (sizeW1) and are basically coated with the fluorescent colour pink. In connection with...
  (read more)

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Part Numbers for Lifting Chain