Vertical Plate Clamp Simulation

Vertical plate clamps are designed for vertical lifting only — the load must hang freely. The cam jaw relies on the load’s weight (gravity) to maintain grip. A vertical clamp can be used to lift a plate from flat to vertical, but once lifted the load must hang vertically.

• Never use horizontally — cam jaw will not grip without gravity loading
• Sling angle must not exceed 60° from vertical (included angle ≤120°)
• Never sideload — load must hang vertical, no angular pull
• Never under-load — minimum 10% of clamp WLL required for cam engagement
• Turn/flip lifts must not exceed 50% of clamp WLL
• One plate only — never lift multiple plates in one clamp
• Use two clamps + spreader bar for long plates to prevent swing

AS 4991 — Lifting devices for precast concrete: requires compliance with design, testing and operational requirements. AS 1418 — Cranes, hoists and winches: covers below-the-hook lifting devices. All lifting equipment must be used in accordance with manufacturer specifications and proof tested per AS/NZS requirements.

Always check the manufacturer’s current specifications before use. WLL, plate thickness range, jaw opening and operating limitations vary between manufacturers and models. Australian Standards require compliance with manufacturer specs.