Hebei jiali Rigging Manufacturing Co., Ltd.
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◆◆ Product Advantage
High-Strength Alloy Steel Material & Ultra-High Safety Factor
Crafted from G80/G100 grade alloy steelvia quenching-tempering processes, shackles achieve a tensile strength of 800-1000 MPa(30% higher than standard steel) and a 5:1 safety factor (static load). For example, a 50-ton shackle has a tested breaking load of ≥250 tons (third-party SGS report), making it suitable for heavy-duty applications like port cranes and steel mill lifting, with a service life exceeding 10 years.
Keywords: High-strength shackles, G80 alloy steel shackles, 5:1 safety factor shackles
Dacromet Coating & Salt Spray Corrosion Resistance
Surface-treated with Dacromet coating (1,000-hour salt spray test, ISO 9227 Class 5), shackles resist seawater and chemical corrosion, ideal for offshore platforms and chemical plants. Compared to standard galvanized coatings (500-hour salt spray resistance), corrosion resistance life is extended by 50%, reducing maintenance frequency by 60%.
Keywords: Corrosion-resistant shackles, Dacromet-coated shackles, marine-environment shackles
Multi-Type Design & Multi-Scenario Adaptability
Available in Bow shackles (0.5-100-ton capacity) for narrow-space lifting and Dee shackles (1-50-ton capacity) for quick sling connection. Supports custom non-standard solutions (e.g., extended hook noses, explosion-proof models) for wind power, mining, and other special scenarios.
Keywords: Multi-type shackles, Bow shackles, Dee shackles
Global Certifications & Third-Party Testing
Certified to EN 13889 (Europe) and ASME B30.26 (North America), with breaking load tests, metallographic analysis reports (e.g., 50-ton shackle tested to 258 tons). Traceable certification ensures global project compliance.
Keywords : Certified shackles, EN 13889 certification, ASME B30.26 certification
Long Service Life & Low Maintenance Costs
Combining alloy steel material and Dacromet coating, annual corrosion rate is <0.1% (in salt spray environments), requiring only biennial inspections. Compared to standard shackles (2 annual maintenance checks), overall costs are reduced by 40%.
Keywords: Long-life shackles, Low-maintenance shackles, Cost-effective shackles
◆◆ Technical Parameters
| Model Types | Bow / Dee / Eye / Pear |
| Material | Alloy Steel: G80 (≥800 MPa) / G100 (≥1000 MPa) Stainless Steel: 316L (Corrosion-Resistant) |
| Surface Treatment | Hot-Dip Galvanizing: 80–120μm Dacromet Coating: Salt Spray ≥1000h Powder Coating: RAL Color Options |
| Safety Factor | Static: 5:1 Dynamic: 4:1 |
| Breaking Load (kN) | ≥5×WLL (e.g., 50T Shackle: Breaking Load ≥250T) |
| Load Rating (WLL) | 0.5–100 tons (Common Sizes: 5T, 10T, 20T, 50T, 100T) |
◆◆ Product Uses
1. Port container cranes require high-load, fatigue-resistant shackles for frequent lifting. G80/G100 alloy steel shackles (50-100T WLL) with Dacromet coating (1000h salt spray resistance) offer strong impact resistance, matching hooks and container corner castings. Auto-reset latches prevent accidental disengagement, enhancing efficiency.
2. Mining environments demand wear-resistant, impact-resistant shackles. 42CrMo alloy steel shackles(30-80T WLL) with quenching-tempering (HRC 50-55) and reinforced throats (+20% thickness) resist ore impacts. IP68 coating prevents dust ingress, suitable for crushers and conveyors, extending lifespan by 3x.
3. Tower cranes need versatile shackles for slings (wire/strap). Dee shackles (10-50T WLL) with wide throats enable quick connections. Hot-dip galvanized (80μm) surfaces resist rain corrosion, suitable for slab/beam lifting. Lightweight design (15% lighter) reduces crane load, enhancing safety.
4. Precision equipment (semiconductor/MRI) requires low-vibration, non-magnetic shackles. Non-magnetic 316L or aluminum shackles (0.5-5T WLL) have ≤0.1% vibration transfer, protecting lithography/MRI precision. Laser-aligned hooks fit micro-slings (Φ3-8mm), ensuring mm-level positioning.
◆◆ Product Operate Guide
1. Pre-Use Inspection
Check for cracks, deformation, or wear (throat wear >10% requires replacement).
Confirm rated load (WLL) ≥ lifting weight (overloading by 20% may cause fracture).
Ensure safety latch operates smoothly (release force ≤10% WLL) for anti-disengagement
2. Proper Installation
Align shackle throat with sling/hook center (avoid side-loading, which causes twisting).
Close latch manually/automatically until "click" (full lock confirmed).
Connect hooks with openings facing the load direction (avoid inward hook tips).
3. Operation Notes
Lift at ≤0.5m/s (slow, steady motion reduces impact).
Never drag shackles/slings (causes throat/metal wear).
In high-temp/corrosive environments (steel mills/offshore), inspect coating annually (recoat if >5% Dacromet peeling).
4. Post-Use Maintenance
Clean salt/dust (rinse with freshwater for port/chemical use).
Lubricate pins every 2 years (use high-temp grease to prevent rust).
Store in dry, ventilated areas (avoid moisture-induced corrosion).
5. Safety Tip: Conduct third-party breaking tests (e.g., 50T shackle ≥250T) to ensure compliance!
◆◆ Product Video
◆◆ FAQ
Q1: Is the safety latch mandatory? How to prevent accidental disengagement?
A: The safety latch is critical for anti-disengagement and must always be engaged. Spring-loaded latches auto-lock under load (requires ≥10% of WLL force to open), while bolt-type latches need manual locking. Regularly check spring tension and pin wear to avoid failure in high-vibration environments.
Keywords: Safety latch, spring locking, bolt-type anti-disengagement
Q2: Will shackles fail in high-temperature environments (e.g., steel mills)?
A: Use 42CrMo high-temperature shackles (≤400°C). They retain ≥90% tensile strength at high heat. Standard alloy steel shackles require 20% derating above 200°C to prevent brittleness.
Keywords: High-temp shackles, 42CrMo material, high-temperature derating
Q3: How to determine if a shackle needs replacement?
A: Retire immediately if:
Cracks (visible via magnetic particle inspection).
Throat wear ≥10% of original thickness (e.g., ≤45mm for a 50mm neck).
Twist deformation >10°.
Latch jamming/failure to reset.
Keywords: Retirement criteria, crack detection, wear threshold
Q4: Can shackles mix with different chain grades (e.g., G80/G100)?
A: Strictly prohibited. Shackles must match chain safety factors (e.g., G100 chain needs 5:1 safety shackle). Mixing risks chain breakage without shackle failure, causing imbalance. Shackles must be stamped with compatible chain grades (e.g., "G100").
Keywords: Chain-shackle compatibility, uniform safety factor, mixing risks
Q5: Is standard galvanizing sufficient for marine environments?
A: Hot-dip galvanizing (80μm) suits mild corrosion only. Marine environments require Dacromet coating (1000-hour salt spray resistance). Rinse salt monthly; inspect coating every 6 months (recoat if >5% peeling).
Keywords: Marine corrosion resistance, Dacromet coating, salt spray protection
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