How to find the right Rigging Sheaves AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Rigging Sheaves
- Block load
- The block sees up to 2x the line pull when the rope reverses direction The rated capacity applies to the block, not to the line pull.
- Sheave diameter
- Follow the manufacturer's minimum sheave-to-rope diameter ratio Small sheaves bend the rope too sharply and shorten its life.
- Groove match
- Match the groove size to the rope diameter and type Tight grooves pinch the rope and loose grooves flatten it.
- Rope type
- Use wire rope blocks for wire and smooth synthetic blocks for synthetic rope Worn steel grooves damage synthetic rope.
- Side opening
- A snatch block's opening lets you insert rope mid-line Avoids threading the rope end through.
Brands that matter
- Crosby McKissick: Industry-reference snatch blocks.
- Gunnebo Johnson: Rigging and snatch blocks.
- Harken: Blocks for synthetic rope.
What to avoid
- Using light-duty pulleys for lifting
- Unmarked blocks with no rated capacity
- Using worn-groove blocks with synthetic rope
- Running wire rope through sheaves made for rope