Jib Crane
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This page explains how Safety Hook is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A safety hook is a specialized lifting accessory integrated into jib cranes, designed with a positive locking mechanism (such as a spring-loaded latch or safety catch) to prevent accidental disengagement of slings, chains, or other lifting attachments from the crane hook during material handling operations.
Technical details and manufacturing context for Safety Hook
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Rated Load Capacity | 1–10 t | Maximum load at hook tipISO 24055 |
| Working Load Limit | 0.5–5 t | Safe working load with safety factorEN 13155 |
| Proof Load | 1.5–15 t | Test load without permanent deformationISO 24055 |
| Breaking Load | 2–20 t | Minimum load causing failureISO 24055 |
| Hook Opening Width | 20–120 mm | Clearance for sling or shackle |
| Hook Throat Depth | 30–150 mm | Depth from tip to back |
| Material Grade | 20–35 HRC | Hardness for wear resistanceISO 24055 |
| Surface Treatment | 8–12 μm | Zinc coating thickness for corrosionISO 1461 |
| Operating Temperature | -20–80 °C | Below -20°C risk of brittle fracture |
| Safety Factor | 4–5 | Ratio of breaking load to WLLISO 24055 |
| Weight | 0.5–15 kg | Depends on size and capacity |
| Tolerance on Dimensions | ±1 mm | General tolerance for machiningISO 2768-m |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
| pressure: | Not applicable (mechanical load device) |
| other spec: | Maximum Working Load Limit (WLL): 1-50 tons, Safety Factor: 5:1 minimum |
| temperature: | -40°C to +150°C |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
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A safety hook prevents accidental disengagement of slings, chains, or other lifting attachments from the crane hook, reducing the risk of load drops and injuries. It features a positive locking mechanism that blocks the throat opening unless intentionally released.
Typical reference ranges include rated load capacity of 1–10 t, working load limit of 0.5–5 t, proof load of 1.5–15 t, and breaking load of 2–20 t. These values are per ISO 24055 and EN 13155, but actual model-specific ratings must be confirmed with the manufacturer.
Safety hooks are typically made from alloy steel or carbon steel. Material grade and hardness are specified per ISO 24055, with hardness ranging from 20–35 HRC. Surface treatment often includes zinc coating per ISO 1461 for corrosion resistance.
Regularly inspect the hook for wear, deformation, cracks, corrosion, and proper latch function. Verify that the latch closes fully and locks securely. Check for any damage to the surface coating. Follow manufacturer guidelines for inspection intervals and replacement criteria. Always verify load ratings and standards with the legal manufacturer.
This component is essential for the following industrial systems and equipment:
Commonly used trade names and technical identifiers for Safety Hook.
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