Horizontal lifting clamps of the CHG type

Usage Instructions

CHG type clamps are engineered to work through friction and direct pressure applied when the rigging is under tension.

• Pair Requirement: These clamps must always be used in pairs or multiples thereof. A single pair with a two-legged chain sling is suitable for small plates, while larger plates require two pairs and a spreader beam to ensure balance.
• Positioning: Place the clamps symmetrically around the center of gravity of the load to ensure a level lift and prevent tilting.
• Insertion: Insert the plate or bundle into the clamp’s jaw as far as it will go (full depth of the throat) to ensure maximum contact and a secure grip.
• Lifting: Apply tension slowly and smoothly. Avoid sudden jerks (shock loading) which can cause the clamps to slip.

Safety Precautions

• Minimum Load: In principle, you should not lift any load that is less than 1/5 (20%) of the clamp’s rated lifting capacity. This ensures there is enough weight to engage the gripping force effectively.
• Sling Angle: When using two-point lifts, maintain a lifting angle (between the sling legs) of 60 degrees or lessunless otherwise specified.
• Prohibited Tasks:
  • Never use these for vertical lifting or to rotate a plate from horizontal to vertical.
  • Do not use them on materials with a hardness exceeding the manufacturer’s limit (often around 37 RC / 345 HB).
  • Never lift more than one plate at a time in a single clamp unless they are specifically bundled and the clamp is rated for bundles.
• Surface Condition: Ensure the plate surface is clean and free of oil, paint, scale, or ice, as these contaminants act as lubricants and significantly reduce grip.

Common Sizes and Specifications