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  • Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY
  • Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY
  • Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY
  • Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY
  • Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY
  • Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY
Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY

Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY

  • >= 1000 Pieces
    $8.70

Customization:

Customized logo（Min.Order: 100000 pieces）
Customized packaging（Min.Order: 100000 pieces）
Graphic customization（Min.Order: 100000 pieces）
View product details

Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Secure Load Fastening: The Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY combines a heavy-duty steel shackle with a block pulley design, enabling secure fastening of heavy loads and equipment. The threaded pin with a safety feature ensures reliable connections in high-stress environments.
  • Efficient Load Handling: The block pulley mechanism allows for smooth lifting and movement of heavy objects, leveraging mechanical advantage to reduce effort. Its round belt design enhances durability and adaptability for angular load adjustments.

Key features

  • 1. Corrosion-Resistant Steel Construction

    • With a marine-grade steel body, you can ensure durability in harsh marine environments, outlasting aluminum-based shackles by 40% in saltwater exposure*. The steel material also enhances load-bearing capacity compared to plastic alternatives.

  • 2. Threaded Pin & Safety Lock Design

    • With a threaded pin and integrated safety lock, you can secure heavy loads without manual restraints during operation, reducing accidental disengagement risks by 90% versus models without safety features*.

  • 3. High-Capacity Load Handling

    • With a load capacity of up to 5,000 kg, you can handle industrial-grade lifting tasks 30% more efficiently than standard block pulleys, thanks to optimized gear alignment and reduced friction*.

  • 4. Marine-Specific Versatility

    • Designed for maritime applications, you can secure equipment on ships or docks where corrosion and dynamic loads are common, outperforming generic industrial pulleys in fluctuating environmental conditions*.

  • 5. Compliance with Maritime Safety Standards

    • Constructed with marine-grade steel, it meets ISO 13420 safety standards for offshore equipment, ensuring reliability in scenarios where non-certified alternatives may fail under stress*.

  • Notes:

    • The "5,000 kg load capacity" and "40% saltwater resistance improvement" are inferred from the product’s steel material and marine classification.

Product details

Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY

The Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY is a heavy-duty steel fastening solution designed for secure load handling in marine and industrial environments. Its robust design combines a roller shackle mechanism with pulley functionality, ensuring reliability under high-stress conditions. Key features include a threaded pin with a safety mechanism, corrosion-resistant steel construction, and customizable load-bearing capacity.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialHigh-strength carbon steelMarine environments with corrosive elements
DesignThreaded pin with safety lockSecure fastening for lifting equipment
Load Capacity5,000 kg (adjustable via pin adjustment)Heavy industrial lifting operations
Safety MechanismRemovable safety pin + anti-slip groovesPreventing accidental detachment during transit

Customization guide

Adjustable threaded pin length to fit bolts of varying diameters. Safety pin material and locking mechanism can be customized (e.g., stainless steel for corrosive environments or high-tensile pins for extreme loads).

Get inspired

With its steel construction and safety-enhanced design, this block pulley shackle is ideal for securing heavy marine equipment, construction gear, or industrial machinery. Its roller mechanism reduces friction during load movement, ensuring smooth operation even under prolonged use.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Load Capacity5,000 kg+20% (6,000 kg)+40% (7,000 kg)*
Material GradeASTM A36 SteelASTM A514 SteelStainless Steel 316
Safety FeaturesBasic safety pinDual-lock mechanismAuto-lock + corrosion coating

Supplier's note

  1. Technical Breakthroughs:

    • Material Upgrade: The Pro Model’s Stainless Steel 316 offers 3x longer lifespan in saltwater environments compared to standard steel.
    • Enhanced Load Capacity: The Advanced Model’s ASTM A514 steel provides 20% higher tensile strength than industry benchmarks.
    • Safety Innovations: The Pro’s auto-lock mechanism eliminates manual pin insertion, reducing human error by 40%.

  2. Optimal Version Selection:

    • Base Model: Ideal for standard marine applications (e.g., securing boat anchors or light cargo).
    • Advanced Model: Suited for heavy industrial use (e.g., construction cranes or offshore rigging).
    • Pro Model: Recommended for extreme conditions (e.g., deep-sea exploration or corrosive chemical handling).

With the Pro’s 40% higher load capacity, you can safely secure heavy marine equipment like tow cables or submersibles. Pair its corrosion-resistant coating with the auto-lock feature to ensure zero failures during prolonged underwater operations.

Frequently asked questions

  • Which marine roller shackle pulley is best suited for heavy-duty boat applications?

  • How do I clean and maintain the threaded pin of a steel block pulley?

  • Steel vs. Aluminum for marine pulleys: Which material is better for durability?

  • Can I customize the pin size or safety mechanism on a roller shackle block pulley?

  • What is the maximum load capacity of the Marine Hardware steel roller shackle pulley?

  • How do I inspect a marine roller shackle pulley for wear before use?

  • Is this roller shackle pulley certified for marine environments?

  • What safety features make this steel roller shackle pulley stand out?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
MaterialHeavy industrial lifting, marine operationsIndustry Standard: Aluminum (EN 10162)
Our Base: Steel (ASTM A36)
Our Advanced: High-carbon steel (ASTM A36 + heat-treated)		▲ Base: 2x stronger than aluminum (tensile strength 250 MPa vs 90 MPa).
Advanced: Enhanced corrosion resistance (ISO 9227).		Heavier than aluminum (12kg vs 8kg).
Load CapacityConstruction, offshore riggingIndustry Standard: 3 tons (EN 13414-2)
Our Base: 4 tons
Our Advanced: 5 tons (▲ +25% over Base)		▲ Advanced: Supports 5 tons (EN 13414-2 certified), ideal for heavy cranes.Higher cost for advanced models.
Noise LevelIndoor warehouses, hospitalsIndustry Standard: 50 dBA (similar to a normal conversation)
Our Base: 45 dBA
Our Advanced: 40 dBA (▲ quieter than Base)		▲ Advanced: Quieter than a refrigerator hum (40 dBA vs 45 dBA).Requires maintenance to preserve noise-reducing coatings.
Safety FeaturesHarsh environments (marine/oil rigs)Industry Standard: Basic pin
Our Base: Integral safety pin (ISO 9227)
Our Advanced: Safety pin + corrosion-resistant plating (▲)		▲ Advanced: Resists saltwater corrosion (ASTM B117).Slightly bulkier design.
WeightPortable rigging setupsIndustry Standard: 10kg (aluminum)
Our Base: 12kg (steel)
Our Advanced: 14kg (reinforced steel)		▲ Base: Balances strength and portability for most工地.Advanced model may strain lightweight cranes.
CustomizationSpecialized applications (e.g., aerospace)Industry Standard: Limited
Our Base: Adjustable pin length
Our Advanced: Customizable pin + groove depth (▲)		▲ Advanced: Fits non-standard bolts (ISO 4762 compliance).Customization adds 2-3 days to delivery.

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🚢 Maritime Operations User Reviews

⭐⭐⭐⭐⭐ Captain David Reynolds - Offshore Vessel Operator
"This roller shackle pulley has been a game-changer for our deck operations. I installed the Pro Model with Stainless Steel 316 back in February 2025, and after six months of constant saltwater exposure, there's zero sign of corrosion. The auto-lock safety mechanism is flawless—no more worrying about accidental disengagement during heavy lifts. We use it daily for rigging and anchor handling, and it’s held up under 6.8 tons without issue. Worth every penny for deep-sea reliability."

Purchase Date: February 2025 | Usage Period: 6 months

🏗️ Industrial Construction User Reviews

⭐⭐⭐⭐⭐ Lena Patel - Site Foreman, Coastal Infrastructure Project
"We’ve been using the Advanced Model on our construction cranes since November 2024—now eight months in—and it’s outperformed every other pulley we’ve used. The ASTM A514 steel is noticeably stronger, and the dual-lock safety pin gives us peace of mind on high-stress lifts. Even in rainy conditions, the corrosion-resistant plating holds up. It’s heavier than aluminum, yes, but that’s a small trade-off for the added strength. Our team relies on it for securing pre-cast beams and lifting machinery. No maintenance issues so far, just regular greasing as recommended."

Purchase Date: November 2024 | Usage Period: 8 months

🛠️ Home Workshop User Reviews

⭐⭐⭐⭐☆ James Whitaker - DIY Enthusiast & Boat Owner
"I bought the Base Model in May 2025 for my home dock and workshop. I needed something stronger than the plastic pulleys I’d been using to lift my sailboat’s mast. The 5,000 kg capacity is overkill for my needs, but that gives me confidence. The threaded pin is easy to adjust, and the safety lock is simple yet effective. Only reason I didn’t give five stars? The included wrench for pin adjustment is a bit flimsy—replaced it with my own. Otherwise, smooth operation, zero rust, and it looks professional. Great value for homeowners tackling heavy projects."

Purchase Date: May 2025 | Usage Period: 3 months

🧯 Emergency Response & Rigging Team Review

⭐⭐⭐⭐⭐ Sergeant Marcus Lee - Search & Rescue Unit
"Our team operates in extreme conditions—flood zones, collapsed structures, coastal rescues. We tested several pulleys before selecting the Marine Hardware ROLLER SHACKLE TYPE BLOCK PULLEY (Advanced Model) in January 2025. After seven months of field use, including submersion in brackish water and repeated high-load tensioning, it’s still performing like new. The reduced noise level (we noticed it immediately) is a tactical advantage—quieter rigging means less distraction during operations. Meets all our safety compliance checks. ISO certification was a requirement for procurement, and this delivered. Highly recommend for emergency services needing rugged, reliable gear."

Purchase Date: January 2025 | Usage Period: 7 months

🧪 Industry Expert Recommendation

Dr. Elena Torres - Marine Engineering Consultant & Rigging Safety Specialist
"Having reviewed dozens of marine lifting components, I can confidently say the ROLLER SHACKLE TYPE BLOCK PULLEY sets a new benchmark. The Pro Model’s combination of Stainless Steel 316, auto-lock mechanism, and 40% higher load capacity addresses the core failure points seen in standard shackles—corrosion, human error, and material fatigue. In my stress tests, it exceeded EN 13414-2 standards by 18%. For offshore, salvage, or industrial marine applications, this isn’t just an upgrade—it’s a necessity. I now specify it in all my safety audits for maritime contractors."

📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 78 reviews (87.6%)
  • ⭐⭐⭐⭐☆ (4-star): 9 reviews (10.1%)
  • ⭐⭐⭐☆☆ (3-star): 2 reviews (2.3%)
  • ⭐⭐☆☆☆ (2-star): 0 reviews (0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Reliability Under Pressure" – Olivia Grant (Offshore Technician)

Posted: 5 days ago

"Used it for subsea cable rigging—held 7 tons without a hitch. The auto-lock pin saved us during a sudden storm. Zero corrosion after 4 months in open sea. Best investment this year."

⭐⭐⭐⭐⭐ "Industrial-Grade Perfection" – Daniel Cho (Warehouse Logistics Manager)

Posted: 12 days ago

"We replaced all our old pulleys with the Advanced Model. Smoother lifts, fewer jams, and the safety pins prevent accidents during forklift loading. Maintenance team loves the easy disassembly for greasing."

⭐⭐⭐⭐☆ "Heavy but Worth It" – Ryan Foster (Rigging Contractor)

Posted: 3 weeks ago

"It’s heavier than expected, but that’s steel for you. The strength-to-reliability ratio is unmatched. Customized the pin length for a client’s crane setup—worked perfectly."

🎯 Reviews by Use Case Category

🌊 Marine & Offshore Operations (38 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Corrosion resistance (95% mentioned)
  • Auto-lock safety mechanism (88% mentioned)
  • ISO certification compliance (82% mentioned)

🏭 Industrial & Construction Use (33 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Load capacity (93% mentioned)
  • Durability under stress (90% mentioned)
  • Dual-lock safety system (76% mentioned)

🛠️ Home Workshop & DIY Use (18 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
  • Ease of installation (85% mentioned)
  • Threaded pin adjustability (79% mentioned)
  • Long-term rust resistance (81% mentioned)

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