China high quality 5 Ton Low Headroom Electric Chain Hoist with Load Limiter

Product Description

NL Type Wire Rope Electric Hoist:
A new generation Electric Hoist which fabricated according to ISO,GB,FEM,DIN,BS standards

1. Autonomous and Controllable Design Concept of Core Technology
Cooperate with major university research institutes to develop core spare part, and can realize the independent production of core spare part, so as to achieve controllable product quality and controllable construction period.

Autonomous and controllable of core spare part:

– Motor (Structural Design and Electromagnetic Calculation of Motor):
a) Electromagnetic Design
b) Bearing Life Calculation
c) Force Analysis of Spindle
d) Ventilation and heat dissipation design

– Reducer (Structure Design of Reducer):
a) 8 Kinds of Driving Devices
b) Light Alloy Shell
c) Low Carbon Alloy Forged Steel, Grinding Technology
d) High quality seals, heavy duty industrial gear oil

– ASW Anti-swing system (The Third Generation Anti-Swing Control System):
a) Function upgrade: It can replace PLC to realize logic control and electric anti-swing function
b) High Matching: No Restriction on inverter brand
c) Cost advantage: Saving communication cards and lines

– Integrated controller:
a) Fault Information Display
b) Voltage and Current Protection
c) Overload protection function
d) Travelling record Function
e) Logic Control Function
f) Real-time monitoring function
g) Anti-swing function
h)Anti skewed and inclined lifting
i) Big Data Communication

– Frequency:
a) For crane use only: It owns the features as follows: small volume, small power and high cost performance
b) High support performance: It can support open-loop vector control and V/F control, the starting torque is large
c) Special Control Function: Equipped with special brake control function of crane driving system
d) Wide range of applications: It can be widely used in driving and controlling occasions such as the lifting, translation and rotation of lifting equipment

Independent Production of Core Components Advantages:
a) Quality Assurance
b) Customized Design
c) Fabrication Time Guarantee
d) After-sales Guarantee

2. Modular design concept
NR Electric Hoist with modular structure can fully meet your requirements which owns unprecedented flexibility and can provide you with perfect solutions for personalized needs.

Modular Design:
a) Motor Module
b) Reducer Module
c) Drum Group Module
d) Wheel Group Module

3. Intelligent and remote operation and maintenance design concept

Intelligent safety monitoring system has the advantage as follows:
a) Calculating the remaining safety cycle of lifting mechanism
b) Brake safety operation time
c) Accumulated starts times of hoisting and travelling
d) Records the load tonnage
e) Overload protection, prohibit users from illegal overloading operations
f) Real-time monitoring of crane’s operating Power Supply
g) Motor overheat protection
h) Extensible wireless access point, it can access to user’s big data center monitoring management, so as to realize remote operation and maintenance

A new generation of security monitoring system:
a) More accurate recording of system information: timing and counting can be accurate to seconds, and real-time queries can also be realized
b) Black Box Function which can record the malfunctions and operations
c) More comprehensive monitoring: it can monitor peripheral equipment and power supply situation
d) Multi-channel monitoring signal access: crane condition, fault category diagnosis
e) Instant Messaging Function which owns the features as follows: convenient networking and remote information transmission
f) More comprehensive output such as: operation output, fault output, timely alarming
g) Operating Interface: Both in Chinese-English Language, Real-time Clock

4. Low headroom and compact design concept
All series Electric Hoist are equipped with large diameter drum, which can effectively increase the lifting height and reduce the left and right limits. Crane’s dead zone when working becomes smaller, which can provide larger using space for the customers.

a) Larger diameter drum
b) Larger winding rope capacity
c) Higher lifting height

Comparison of the length of Traditional and New Type Electric Hoist with the same lifting height, NR Type Electric Hoist

5. Design concept of Maintenance-free, energy-saving and Green

Integral structure of Gear motor: Compact structure/Reduce the deadweight/Reduce noise
a) The motor power is reduced by 30% compared with the traditional Electric Hoist
b) Through the mature application of Variable frequency positioning technology, the work efficiency is improved by more than 20%
c) The noise of the whole machine is below 70 decibels
d) The brake pads adopt non-asbestos design
e) No metal dust caused by the slide friction between the Nylon Rope Xihu (West Lake) Dis. and Steel Wire Rope, drum, providing workers with high cleanness operation environment
f) The high-precision hard gear reducer has been filled with international brand lubricants before delivery from factory , and there is no need to replace it within the service cycle of the product
g) Adopt international brand and maintenance-free steel wire rope
h) High-strength Nylon rope guides, change from wearing parts to durable parts
i) International brand electrical components, bearings, and pendent controller
j) Electromagnetic disk brake with automatic compensation of brake clearance and maintenance-free function

6. Rugged and safe design concept

a) The whole machine passed the national standard life test (1600 hours)
b) The service life of electrical components is not less than 500,000 times
c) The safe use of brake CHINAMFG 1 million times
d) The breaking force of the wire rope reaching grade 2160
e) The hook adopts high-strength T-class hook head
f) 10 years free maintenance of speed reducer


NLT series low headroom hoist parameter table
Work duty Lifting speed
Lifting height
Number of falls Travelling speed
Hook upper limit
Hoist width
Hook right limit
Hoist length
Hoist wheel gauge
3 M5 5/0.8 6 4/1 2-20 120-350 550 483
342 863 670
9 1043 850
12 1223 1030
15 1403 1210
18 1583 1390
24 1943 1750
5 M5 5/0.8 6 4/1 2-20 120-450 650 526
382 798 605
9 943 750
12 1088 895
15 1233 1040
18 1378 1185
24 1668 1475
10 M5 5/0.8 9 4/1 2-20 250-550 650 560
380 1571 790
12 1130 910
15 1250 1030
18 1370 1150
24 1610 1390


Load category Average daily working time (hours)
1 Light load: The rated load is rarely lifted and always handle the loads 4-8 8-16 >16
2 Medium load: The rated load is sometimes lifted and the frequency of load handling is medium. 2-4 4-8 8-16
3 Heavy load: The rated load is always lifted and the handling loads are always heavy. 1-2 2-4 4-8
4 Super heavy load: always handling the rated load. 0.5-1 1-2 2-4
Work duty M5 M6 M7
Pulley ratio Model
2/1 4/1 6/1 8/1
4/2 8/2 12/2 16/2
Lifting capacity
1 2    
1.25 2.5    
1.5 3 NL1    
2 4    
2.5 5 NL2  
3.2 6.3 10    
4 8 12.5    
5 10 16 NL3    
6.3 12.5 20 25      
8 16 25 32      
10 20 32 40 NL4    
12.5 25 40 50      
16 32 50 63      
20 40 63 80 NL5  

Workshop 5S management

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After-sales Service: Installation Guidence/Quick Problem Response
Warranty: One Year
Application: Double Beam Crane, Gantry Crane, Bridge Crane, Single Grinder Crane, Small Crane
Type: Electric Hoist
Sling Type: Wire Rope
Lift Speed: 2~8m/min


Can injection molded parts be customized or modified to meet unique industrial needs?

Yes, injection molded parts can be customized or modified to meet unique industrial needs. The injection molding process offers flexibility and versatility, allowing for the production of highly customized parts with specific design requirements. Here’s a detailed explanation of how injection molded parts can be customized or modified:

Design Customization:

The design of an injection molded part can be tailored to meet unique industrial needs. Design customization involves modifying the part’s geometry, features, and dimensions to achieve specific functional requirements. This can include adding or removing features, changing wall thicknesses, incorporating undercuts or threads, and optimizing the part for assembly or integration with other components. Computer-aided design (CAD) tools and engineering expertise are used to create custom designs that address the specific industrial needs.

Material Selection:

The choice of material for injection molded parts can be customized based on the unique industrial requirements. Different materials possess distinct properties, such as strength, stiffness, chemical resistance, and thermal stability. By selecting the most suitable material, the performance and functionality of the part can be optimized for the specific application. Material customization ensures that the injection molded part can withstand the environmental conditions, operational stresses, and chemical exposures associated with the industrial application.

Surface Finishes:

The surface finish of injection molded parts can be customized to meet specific industrial needs. Surface finishes can range from smooth and polished to textured or patterned, depending on the desired aesthetic appeal, functional requirements, or ease of grip. Custom surface finishes can enhance the part’s appearance, provide additional protection against wear or corrosion, or enable specific interactions with other components or equipment.

Color and Appearance:

Injection molded parts can be customized in terms of color and appearance. Colorants can be added to the material during the molding process to achieve specific shades or color combinations. This customization option is particularly useful when branding, product differentiation, or visual identification is required. Additionally, surface textures, patterns, or special effects can be incorporated into the mold design to create unique appearances or visual effects.

Secondary Operations:

Injection molded parts can undergo secondary operations to further customize or modify them according to unique industrial needs. These secondary operations can include post-molding processes such as machining, drilling, tapping, welding, heat treating, or applying coatings. These operations enable the addition of specific features or functionalities that may not be achievable through the injection molding process alone. Secondary operations provide flexibility for customization and allow for the integration of injection molded parts into complex assemblies or systems.

Tooling Modifications:

If modifications or adjustments are required for an existing injection molded part, the tooling can be modified or reconfigured to accommodate the changes. Tooling modifications can involve altering the mold design, cavity inserts, gating systems, or cooling channels. This allows for the production of modified parts without the need for creating an entirely new mold. Tooling modifications provide cost-effective options for customizing or adapting injection molded parts to meet evolving industrial needs.

Prototyping and Iterative Development:

Injection molding enables the rapid prototyping and iterative development of parts. By using 3D printing or soft tooling, prototype molds can be created to produce small quantities of custom parts for testing, validation, and refinement. This iterative development process allows for modifications and improvements to be made based on real-world feedback, ensuring that the final injection molded parts meet the unique industrial needs effectively.

Overall, injection molded parts can be customized or modified to meet unique industrial needs through design customization, material selection, surface finishes, color and appearance options, secondary operations, tooling modifications, and iterative development. The flexibility and versatility of the injection molding process make it a valuable manufacturing method for creating highly customized parts that address specific industrial requirements.

Can you provide guidance on the selection of injection molded materials based on application requirements?

Yes, I can provide guidance on the selection of injection molded materials based on application requirements. The choice of material for injection molding plays a critical role in determining the performance, durability, and functionality of the molded parts. Here’s a detailed explanation of the factors to consider and the guidance for selecting the appropriate material:

1. Mechanical Properties:

Consider the mechanical properties required for the application, such as strength, stiffness, impact resistance, and wear resistance. Different materials have varying mechanical characteristics, and selecting a material with suitable properties is crucial. For example, engineering thermoplastics like ABS, PC, or nylon offer high strength and impact resistance, while materials like PEEK or ULTEM provide exceptional mechanical performance at elevated temperatures.

2. Chemical Resistance:

If the part will be exposed to chemicals, consider the chemical resistance of the material. Some materials, like PVC or PTFE, exhibit excellent resistance to a wide range of chemicals, while others may be susceptible to degradation or swelling. Ensure that the selected material can withstand the specific chemicals it will encounter in the application environment.

3. Thermal Properties:

Evaluate the operating temperature range of the application and choose a material with suitable thermal properties. Materials like PPS, PEEK, or LCP offer excellent heat resistance, while others may have limited temperature capabilities. Consider factors such as the maximum temperature, thermal stability, coefficient of thermal expansion, and heat transfer requirements of the part.

4. Electrical Properties:

For electrical or electronic applications, consider the electrical properties of the material. Materials like PBT or PPS offer good electrical insulation properties, while others may have conductive or dissipative characteristics. Determine the required dielectric strength, electrical conductivity, surface resistivity, and other relevant electrical properties for the application.

5. Environmental Conditions:

Assess the environmental conditions the part will be exposed to, such as humidity, UV exposure, outdoor weathering, or extreme temperatures. Some materials, like ASA or HDPE, have excellent weatherability and UV resistance, while others may degrade or become brittle under harsh conditions. Choose a material that can withstand the specific environmental factors to ensure long-term performance and durability.

6. Regulatory Compliance:

Consider any regulatory requirements or industry standards that the material must meet. Certain applications, such as those in the medical or food industries, may require materials that are FDA-approved or comply with specific certifications. Ensure that the selected material meets the necessary regulatory and safety standards for the intended application.

7. Cost Considerations:

Evaluate the cost implications associated with the material selection. Different materials have varying costs, and the material choice should align with the project budget. Consider not only the material cost per unit but also factors like tooling expenses, production efficiency, and the overall lifecycle cost of the part.

8. Material Availability and Processing:

Check the availability of the material and consider its processability in injection molding. Ensure that the material is readily available from suppliers and suitable for the specific injection molding process parameters, such as melt flow rate, moldability, and compatibility with the chosen molding equipment.

9. Material Testing and Validation:

Perform material testing and validation to ensure that the selected material meets the required specifications and performance criteria. Conduct mechanical, thermal, chemical, and electrical tests to verify the material’s properties and behavior under application-specific conditions.

Consider consulting with material suppliers, engineers, or experts in injection molding to get further guidance and recommendations based on the specific application requirements. They can provide valuable insights into material selection based on their expertise and knowledge of industry standards and best practices.

By carefully considering these factors and guidance, you can select the most appropriate material for injection molding that meets the specific application requirements, ensuring optimal performance, durability, and functionality of the molded parts.

Can you describe the range of materials that can be used for injection molding?

Injection molding offers a wide range of materials that can be used to produce parts with diverse properties and characteristics. The choice of material depends on the specific requirements of the application, including mechanical properties, chemical resistance, thermal stability, transparency, and cost. Here’s a description of the range of materials commonly used for injection molding:

1. Thermoplastics:

Thermoplastics are the most commonly used materials in injection molding due to their versatility, ease of processing, and recyclability. Some commonly used thermoplastics include:

  • Polypropylene (PP): PP is a lightweight and flexible thermoplastic with excellent chemical resistance and low cost. It is widely used in automotive parts, packaging, consumer products, and medical devices.
  • Polyethylene (PE): PE is a versatile thermoplastic with excellent impact strength and chemical resistance. It is used in various applications, including packaging, pipes, automotive components, and toys.
  • Polystyrene (PS): PS is a rigid and transparent thermoplastic with good dimensional stability. It is commonly used in packaging, consumer goods, and disposable products.
  • Polycarbonate (PC): PC is a transparent and impact-resistant thermoplastic with high heat resistance. It finds applications in automotive parts, electronic components, and optical lenses.
  • Acrylonitrile Butadiene Styrene (ABS): ABS is a versatile thermoplastic with a good balance of strength, impact resistance, and heat resistance. It is commonly used in automotive parts, electronic enclosures, and consumer products.
  • Polyvinyl Chloride (PVC): PVC is a durable and flame-resistant thermoplastic with good chemical resistance. It is used in a wide range of applications, including construction, electrical insulation, and medical tubing.
  • Polyethylene Terephthalate (PET): PET is a strong and lightweight thermoplastic with excellent clarity and barrier properties. It is commonly used in packaging, beverage bottles, and textile fibers.

2. Engineering Plastics:

Engineering plastics offer enhanced mechanical properties, heat resistance, and dimensional stability compared to commodity thermoplastics. Some commonly used engineering plastics in injection molding include:

  • Polyamide (PA/Nylon): Nylon is a strong and durable engineering plastic with excellent wear resistance and low friction properties. It is used in automotive components, electrical connectors, and industrial applications.
  • Polycarbonate (PC): PC, mentioned earlier, is also considered an engineering plastic due to its exceptional impact resistance and high-temperature performance.
  • Polyoxymethylene (POM/Acetal): POM is a high-strength engineering plastic with low friction and excellent dimensional stability. It finds applications in gears, bearings, and precision mechanical components.
  • Polyphenylene Sulfide (PPS): PPS is a high-performance engineering plastic with excellent chemical resistance and thermal stability. It is used in electrical and electronic components, automotive parts, and industrial applications.
  • Polyetheretherketone (PEEK): PEEK is a high-performance engineering plastic with exceptional heat resistance, chemical resistance, and mechanical properties. It is commonly used in aerospace, medical, and industrial applications.

3. Thermosetting Plastics:

Thermosetting plastics undergo a chemical crosslinking process during molding, resulting in a rigid and heat-resistant material. Some commonly used thermosetting plastics in injection molding include:

  • Epoxy: Epoxy resins offer excellent chemical resistance and mechanical properties. They are commonly used in electrical components, adhesives, and coatings.
  • Phenolic: Phenolic resins are known for their excellent heat resistance and electrical insulation properties. They find applications in electrical switches, automotive parts, and consumer goods.
  • Urea-formaldehyde (UF) and Melamine-formaldehyde (MF): UF and MF resins are used for molding electrical components, kitchenware, and decorative laminates.

4. Elastomers:

Elastomers, also known as rubber-like materials, are used to produce flexible and elastic parts. They provide excellent resilience, durability, and sealing properties. Some commonly used elastomers in injection molding include:

  • Thermoplastic Elastomers (TPE): TPEs are a class of materials that combine the characteristics of rubber and plastic. They offer flexibility, good compression set, and ease of processing. TPEs find applications in automotive components, consumer products, and medical devices.
  • Silicone: Silicone elastomers provide excellent heat resistance, electrical insulation, and biocompatibility. They are commonly used in medical devices, automotive seals, and household products.
  • Styrene Butadiene Rubber (SBR): SBR is a synthetic elastomer with good abrasion resistance and low-temperature flexibility. It is used in tires, gaskets, and conveyor belts.
  • Ethylene Propylene Diene Monomer (EPDM): EPDM is a durable elastomer with excellent weather resistance and chemical resistance. It finds applications in automotive seals, weatherstripping, and roofing membranes.

5. Composites:

Injection molding can also be used to produce parts made of composite materials, which combine two or more different types of materials to achieve specific properties. Commonly used composite materials in injection molding include:

  • Glass-Fiber Reinforced Plastics (GFRP): GFRP combines glass fibers with thermoplastics or thermosetting resins to enhance mechanical strength, stiffness, and dimensional stability. It is used in automotive components, electrical enclosures, and sporting goods.
  • Carbon-Fiber Reinforced Plastics (CFRP): CFRP combines carbon fibers with thermosetting resins to produce parts with exceptional strength, stiffness, and lightweight properties. It is commonly used in aerospace, automotive, and high-performance sports equipment.
  • Metal-Filled Plastics: Metal-filled plastics incorporate metal particles or fibers into thermoplastics to achieve properties such as conductivity, electromagnetic shielding, or enhanced weight and feel. They are used in electrical connectors, automotive components, and consumer electronics.

These are just a few examples of the materials used in injection molding. There are numerous other specialized materials available, each with its own unique properties, such as flame retardancy, low friction, chemical resistance, or specific certifications for medical or food-contact applications. The selection of the material depends on the desired performance, cost considerations, and regulatory requirements of the specific application.

China high quality 5 Ton Low Headroom Electric Chain Hoist with Load Limiter  China high quality 5 Ton Low Headroom Electric Chain Hoist with Load Limiter
editor by CX 2024-01-15

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