lever block
Lever Block
Product Overview
Our lever block is a robust and versatile manual chain hoist designed for precise load lifting and pulling operations in demanding industrial environments. Engineered with high-grade alloy steel components, this lever block offers exceptional durability and safety, making it an indispensable tool for construction sites, warehouses, manufacturing facilities, and maintenance workshops worldwide.
The lever block operates on a simple yet powerful mechanical principle: a leveraged handle provides mechanical advantage, allowing operators to lift heavy loads with minimal effort. Available in various capacities from 0.75 tons to 9 tons, our lever blocks feature a compact design that ensures easy maneuverability in tight spaces. The free chain mechanism enables quick adjustments for pulling or tensioning applications, while the Weston-style brake system guarantees secure load holding even under load.
Compliance with international standards such as EN 13157 and ASME B30.21 underscores the reliability of our lever block. Its low headroom configuration minimizes the distance between the load and the beam, optimizing workspace efficiency. Whether you're hoisting materials on a factory floor or securing cargo during shipping, this lever block delivers consistent performance, reducing downtime and enhancing productivity across global supply chains.
With a focus on ergonomics, the lever handle is designed for comfortable, fatigue-free operation, and the overload protection mechanism prevents accidents by limiting excessive loads. Ideal for international trade professionals seeking high-quality lifting equipment, our lever block combines precision engineering with cost-effective maintenance, ensuring long-term value in B2B applications.
Key Features
- Compact and Lightweight Design: The lever block's streamlined body reduces overall weight without compromising strength, facilitating easy transport and installation in confined areas.
- Double Pawl and Double Gear Mechanism: Provides superior load control and redundancy, ensuring the load remains stationary even if one pawl fails, a critical safety feature for heavy-duty use.
- Weston-Style Brake System: Offers precise and reliable braking, preventing load slippage and enabling controlled lowering at variable speeds.
- Free Chain Lever: Allows effortless chain adjustment for pulling horizontally or at angles, expanding the lever block's versatility beyond vertical lifting.
- Alloy Steel Chain and Hooks: Grade 80 load chain and hooks with safety latches withstand rigorous use, with 4:1 safety factor for ultimate protection.
- Low Headroom: Minimal distance between upper and lower hooks maximizes lifting height in restricted overhead spaces.
- Overload Limiter: Built-in protection device halts operation if capacity is exceeded, safeguarding equipment and personnel.
- Ergonomic Handle: Extended lever length reduces pulling force required, minimizing operator fatigue during prolonged tasks.
- Corrosion-Resistant Finish: Zinc-plated components ensure longevity in harsh environments like marine or chemical processing settings.
Technical Specifications
| Model | Capacity (tons) | Standard Lift (m) | Test Load (tons) | Min. Headroom H (mm) | Chain Fall (mm) | Handle Pull to Lift Rated Load (N) | Net Weight (kg) |
|---|---|---|---|---|---|---|---|
| LB-075 | 0.75 | 1.5 | 3.75 | 285 | 6.3 x 1 | 240 | 6.5 |
| LB-150 | 1.5 | 1.5 | 7.5 | 325 | 7.1 x 1 | 310 | 9.5 |
| LB-030 | 3 | 1.5 | 15 | 370 | 9.0 x 1 | 320 | 15.5 |
| LB-060 | 6 | 1.5 | 30 | 465 | 9.0 x 2 | 340 | 26.5 |
| LB-090 | 9 | 1.5 | 45 | 530 | 9.0 x 3 | 360 | 47.5 |
Note: Specifications subject to change without notice. Custom lift heights and configurations available upon request. All lever blocks meet or exceed EN 13157 and ASME B30.21 standards.
Application Scenarios
In construction and infrastructure projects, the lever block excels at positioning steel beams, precast concrete elements, and scaffolding components with pinpoint accuracy. Its ability to operate in any orientation makes it perfect for tensioning guy wires or aligning structural members on high-rise builds.
Within manufacturing and assembly lines, factories rely on the lever block for lifting motors, machinery parts, and heavy dies. The low headroom design fits seamlessly under production cranes, enabling efficient workflow without halting operations.
For warehousing and logistics, this lever block facilitates loading/unloading of pallets, securing freight in containers, and pulling loads across floors. Its portability suits mobile racking systems and inventory management in large distribution centers.
In maintenance and repair sectors, such as shipyards, power plants, and oil rigs, the lever block handles engine hoisting, pipe alignment, and equipment servicing in confined or outdoor settings where powered hoists are impractical.
Mining and forestry operations benefit from its rugged construction, using the lever block to extract timber, position drilling rigs, or recover vehicles from rugged terrain, even in adverse weather conditions.
Advantages
- Superior Safety: Multiple safety mechanisms including overload protection, double pawls, and forged hooks reduce accident risks, ensuring compliance with global regulations.
- Cost-Effective Operation: No electricity required, eliminating power dependency and lowering operational costs in remote or power-limited sites.
- Versatile Performance: Suitable for lifting, pulling, and tensioning at angles up to 45 degrees, outperforming traditional chain hoists in multi-directional tasks.
- Minimal Maintenance: Self-lubricating gears and sealed bearings extend service intervals, reducing total ownership costs.
- High Efficiency: Mechanical advantage up to 50:1 allows single-operator handling of loads exceeding 3 tons with effortless pulls.
- Durability in Harsh Conditions: Alloy construction and protective coatings resist corrosion, abrasion, and extreme temperatures from -40°C to 100°C.
- Customizable Options: Tailored chain lengths, spark-proof models for hazardous areas, and EEVT-rated versions for specialized industries.
Why Choose Us
As a leading manufacturer and exporter of industrial lifting equipment, we specialize in premium lever blocks crafted with precision in state-of-the-art facilities. Our commitment to quality is evidenced by ISO 9001 certification, rigorous in-house testing, and adherence to CE, GS, and TUV standards, guaranteeing every lever block meets the highest international benchmarks.
We leverage advanced forging and heat-treatment processes to enhance component strength, resulting in lever blocks that outperform competitors in load cycle tests. With over two decades of experience serving B2B clients across Europe, North America, Asia, and the Middle East, we understand the nuances of global trade—from customs compliance to efficient logistics.
Our lever blocks undergo 150% overload testing and magnetic particle inspection for flaw detection, ensuring zero-defect delivery. We offer comprehensive technical support, including load capacity calculations, installation guides, and after-sales service networks worldwide. By choosing our lever block, you invest in reliability, backed by a robust warranty and a track record of 99.9% on-time delivery.
Sustainability is integral to our operations; our lever blocks feature recyclable materials and energy-efficient manufacturing, aligning with eco-conscious procurement policies. Partner with us for lever blocks that drive your projects forward with unmatched dependability.
FAQ
What is the safety factor of your lever block?
All models incorporate a 4:1 design safety factor, with test loads at 150% of rated capacity, fully compliant with EN 13157 standards.
Can the lever block be used for horizontal pulling?
Yes, the free chain lever allows smooth horizontal or angled pulling up to 45 degrees, ideal for tensioning and dragging applications.
What maintenance is required for the lever block?
Routine lubrication of the chain and gears every 3-6 months, along with annual inspection of hooks and brakes, ensures optimal performance. Detailed schedules provided in the user manual.
Is customization available for lift height?
Absolutely. We offer extended chain lengths up to 12 meters or more, tailored to your specific requirements without additional lead time.
What temperature range can the lever block withstand?
Standard models operate from -40°C to 100°C. High-temperature variants up to 250°C are available for specialized uses.
Does the lever block come with certifications?
Each unit is certified to CE, GS, and TUV standards, with individual serial numbers for traceability and third-party verification.
How does the overload protection work?
A mechanical limiter engages at 125% capacity, preventing further operation and alerting the user to reduce the load safely.