China factory Pulley Block for Ship Unloader Loader pulley band

Product Description

Pulley and Pulley Block for Ship Unloader, Ship Loader and Other Large Equipment


Our company can manufacture all kinds of non-standard and standard pulleys. The pulley are suit for heavy duty equipment lsuch us cranes, ship loader and unloader. Stacker and reclaimer. The pulley and pulley block have been proven the good quality by our costomers. It`s wildly used in varius of our heavy duty equipment.


material advise by user
process CNC lathing
character durable
advantage high performance
benefit low cost
economy cost effective

We are a professional company in bulk material handling, transportation, storage, processing, accessory equipment design, integration and manufacturing. We can provide a complete set of solutions. Thank you for reading the information and welcome to purchase! Welcome to be our agent distribution!

Brief introduction of the company’s manufacturing capacity
The company’s headquarters, technology and sales are located in Lingang New Area of China (ZheJiang ) pilot free trade zone,The company’s manufacture base is located in Xihu (West Lake) Dis. county, ZHangZhoug Province, which is known as “the most beautiful county in China”. It is 65 kilometers away from HangZhou city and 60 kilometers away from Qiandao Lake. The transportation to Xihu (West Lake) Dis. county from other places is very convenient. No matter by railway, highway or waterway. The manufacture base has a total plant area of around 30000 square CHINAMFG and workshop is equipped with more than 300 sets of various advance manufacture equipment, including 20 sets of CNC precision vertical lathe MODEL: SMVTM12000×50/150, CNC vertical lathe MODEL:DVT8000×30/32, CNC horizontal lathe, MODEL: CK61315×125/32, CNC horizontal lathe MODEL:CK61200×80/32, CNC Grounding boring and milling machine MODEL:TJK6920,etc.Most of the parts are machined by using CNC machine equipment. Theis is a hot treatment CHINAMFG with size 10.5m×8m×8m. The manufacture base also equipped with lifting capacity of 25t, 50t, 100t, 200t overhead crane to handle heavy workpiece and assembly work.

Metalworking equipment

  Name of equipment Model number Quantity SCOPE of application
A  Lathes      
1 Vertical Lathe Numerical control 1 Φ 12000
2 Vertical Lathe Numerical control 1 Φ 8000
3 Vertical Lathe   1 Φ 1600
4 Vertical Lathe C5112A 1 Ф 1250
5 Horizontal Lathe Numerical control 1 CK61315×12×100T
6 Horizontal Lathe CW61200 1 Ф 2000×8000
7 Horizontal Lathe CW61160 1 Ф 1600×6500
8 Horizontal Lathe CW6180 2 Ф 800×3000
9 Horizontal Lathe CW61125 2 Ф 1250×5000
10 Horizontal Lathe (remodel) CW62500 2 Ф 2800×6000
11 Common Lathe CY6140 3 Ф 400×1000
12 Common Lathe  CA6140 3 Ф 400×1500
13 Common Lathe C620 2 Ф 400×1400
14 Common Lathe C616 1 Ф 320×1000
15 Common Lathe C650 1 Ф 650×2000
B Drilling machine      
1 Radial drilling machine Z3080 3 Ф 80×2500
2 Radial drilling machine Z3040 2 Ф 60×1600
3 Universal drilling machine ZW3725 3 Ф 25×880
C Planing machine      
1  Shaper B665 1 L650
2 Hydraulic Shaper B690 1 L900
3 Gantry Planer HD–16 1 L10000×B1600
D Milling Machine      
1 4 Coordinate Milling Machine Numerical control 1 2500×4000
2 Gantry milling machine Numerical contro 1 16mx5mx3m
3 Gantry milling machine Numerical contro 1 12mx4mx2.5m
4 Gantry milling and boring machine  Numerical contro 1 Φ 250 
5 Vertical Milling Machine XS5054 1 1600×400
6 Horizontal Milling Machine C62W 1 1250×320
7 Horizontal Milling Machine  X60 1 800×200
8 Gantry milling machine X2014J 1 L4000×B1400
9 Gantry milling machine X2571J 1 L3000×B1000
10 Floor end milling TX32-1 1 L1500×H800
E Grinding machine      
1 External Grinder M131W 1 Ф 300×1000
2 External Grinder M1432B 1 Ф 320×15000
3 Surface Grinder M7130 1 L 1000×300
4 Tool grinder M6571C 1 Ф 250
F Boring machine      
1 Floor-standing milling and boring machine TJK6920 1 X12000 × Y4500 × Z1000
2 Boring machine TSPX619 1 Ф 1000
3 Boring machine T616 1 Ф 800
4 Boring machine T611 1 Ф 800
G Slotted bed      
1 Slotted bed B5032 1 H320
H Other machine tools      
1 Gear hobbing machine Y3150 1 Ф 500  M=6
2 Hacksaw machine G7571 1 Ф 220

Products and services available
Material handling equipment

Storage equipment

Conveying equipment

Feeding equipment

Component of conveying system

Belt conveyor parts

Large and medium sized finishing parts

If you need above products, please contact us!
                                                                                                          ZheJiang Sunshine Industrial Technology Co. , Ltd.


After-sales Service: 1 Year
Warranty: 1 Year
Character: High Performance
Advantage: Durable
Feature: Reliable
Transport Package: Customized


Can pulleys be used in both simple and complex mechanical systems?

Yes, pulleys can be used in both simple and complex mechanical systems. Pulleys are versatile mechanical devices that can be incorporated into a wide range of systems to transmit power, change direction, or provide mechanical advantage.

In simple mechanical systems, pulleys are often used to create a mechanical advantage by reducing the effort force required to lift or move a load. For example, a simple pulley system with a single fixed pulley can distribute the load’s weight over multiple strands of rope or cable, reducing the force needed to lift the load. Simple pulley systems are commonly used in applications such as flagpoles, well buckets, or manual hoists.

In more complex mechanical systems, pulleys can be part of intricate arrangements to achieve specific functions. They can be combined with multiple pulleys, belts or ropes, and other mechanical components to create complex systems for power transmission, tensioning, or precise control. Examples of complex systems that utilize pulleys include conveyor belt systems, industrial machinery, cranes, and elevators.

Pulleys offer several advantages in both simple and complex mechanical systems:

1. Mechanical Advantage: Pulleys can provide a mechanical advantage by distributing the load’s weight over multiple strands of rope or belt, reducing the effort force required to lift or move the load.

2. Direction Change: Pulleys can change the direction of the force applied, allowing for redirection of motion or routing of belts or ropes around obstacles.

3. Speed Adjustment: By adjusting the size of pulleys and the number of pulley systems, the speed of the output motion can be modified relative to the input motion.

4. Power Transmission: Pulleys are effective in transmitting power between shafts or components, allowing for the transfer of rotational motion and torque.

5. Versatility: Pulleys can be used with different types of belts or ropes, such as flat belts, V-belts, timing belts, or wire ropes, providing flexibility in design and application.

Whether in simple or complex mechanical systems, the selection, arrangement, and sizing of pulleys should be carefully considered to ensure proper functionality, efficiency, and safety. Manufacturers’ guidelines, engineering principles, and best practices should be followed when incorporating pulleys into mechanical systems.


What is the importance of proper pulley alignment and tensioning?

Proper pulley alignment and tensioning are critical factors in ensuring the efficient and reliable operation of pulley systems. They play a significant role in maximizing power transmission, minimizing wear and tear, and maintaining the overall performance and longevity of the system. Here’s the importance of proper pulley alignment and tensioning:

1. Power Transmission Efficiency:

Proper pulley alignment and tensioning ensure optimal power transmission efficiency. When pulleys are misaligned or belts/chains are improperly tensioned, energy is wasted due to increased friction and slippage. This results in decreased power transfer and reduced system efficiency. By aligning the pulleys parallel to each other and applying the correct tension to the belts or chains, the system can achieve maximum power transmission, minimizing energy losses.

2. Belt/Chain Longevity:

Correct pulley alignment and tensioning contribute to the longevity of belts and chains. Misalignment and inadequate tension can cause uneven wear, excessive stretching, and premature failure of the belts or chains. Proper alignment and tension distribute the load evenly across the belts or chains, reducing stress and extending their lifespan. This helps to avoid unplanned downtime, maintenance costs, and the need for frequent belt/chain replacements.

3. Reduced Noise and Vibration:

Improper pulley alignment and tensioning can lead to increased noise and vibration in the system. Misaligned pulleys or loose belts/chains can cause excessive vibration, resulting in noise, equipment damage, and discomfort to operators or nearby personnel. Proper alignment and tensioning help minimize vibration, ensuring quieter operation and a more comfortable working environment.

4. System Reliability and Safety:

Proper alignment and tensioning contribute to the overall reliability and safety of pulley systems. Misaligned pulleys or loose belts/chains can lead to unexpected failures, breakdowns, or accidents. Over-tensioning can also cause excessive stress on components and increase the risk of system failures. By maintaining proper alignment and tension, the system operates within its design parameters, reducing the likelihood of unexpected failures and ensuring the safety of operators and equipment.

5. Improved Performance:

Correct pulley alignment and tensioning enhance the overall performance of the system. Properly tensioned belts or chains provide better grip and traction, allowing for smoother and more precise movement of the driven components. This results in improved speed control, reduced slippage, and enhanced accuracy in applications such as conveyor systems, machine tools, and automotive engines.

6. Maintenance and Cost Savings:

Proper pulley alignment and tensioning can lead to significant maintenance and cost savings. Well-aligned pulleys and correctly tensioned belts or chains experience less wear and require fewer adjustments. This reduces the frequency of maintenance tasks, such as belt/chain replacements, realignments, and re-tensioning. Additionally, by maximizing power transmission efficiency and minimizing wear, proper alignment and tensioning help reduce energy consumption and lower operating costs.

In conclusion, proper pulley alignment and tensioning are crucial for achieving optimal power transmission efficiency, prolonging the lifespan of belts or chains, reducing noise and vibration, ensuring system reliability and safety, improving performance, and realizing maintenance and cost savings. It is essential to follow manufacturer guidelines and perform regular inspections and adjustments to maintain proper alignment and tension in pulley systems.


What safety precautions should be observed when using pulleys?

When using pulleys, it is important to observe several safety precautions to ensure the well-being of individuals involved and prevent accidents. Here are some key safety precautions that should be followed:

1. Proper Training: Individuals who operate or work around pulley systems should receive proper training on their usage, including understanding the equipment, safety procedures, and potential hazards. Training should cover topics such as load limits, proper lifting techniques, and the importance of following safety guidelines.

2. Inspections and Maintenance: Regular inspections and maintenance of pulleys are crucial for identifying any signs of wear, damage, or malfunction. Inspect pulleys for cracks, deformation, excessive wear, or any other issues that may compromise their integrity. Replace damaged or worn-out pulleys immediately to prevent accidents.

3. Load Capacity: Ensure that the load being lifted or moved does not exceed the rated load capacity of the pulley system. Exceeding the load capacity can lead to overloading, which may result in equipment failure, accidents, or injuries. Refer to the manufacturer’s guidelines or load capacity charts for proper load calculations.

4. Secure Attachment: Ensure that pulleys are securely attached to their mounting points or support structures. Loose or improperly secured pulleys can cause the load to shift or fall, posing significant safety risks. Use appropriate hardware, such as bolts or clamps, and follow manufacturer recommendations for proper attachment methods.

5. Personal Protective Equipment (PPE): Individuals involved in pulley operations should wear the necessary PPE, depending on the specific hazards present. This may include safety helmets, gloves, safety glasses, and appropriate footwear. PPE helps protect against potential injuries from falling objects, impacts, or contact with moving parts.

6. Clear Work Area: Maintain a clear work area around the pulley system. Remove any obstructions, debris, or tripping hazards that could impede safe operation or cause accidents. Adequate space should be provided for safe movement and positioning of individuals involved in the operation.

7. Communication and Signaling: Establish clear communication and signaling protocols when working with pulleys. Use standardized hand signals or communication devices to ensure effective communication between operators, spotters, and other personnel involved. This helps coordinate movements, avoid misunderstandings, and prevent accidents.

8. Emergency Stop Procedures: Familiarize yourself with the emergency stop procedures for the pulley system. Ensure that all individuals involved are aware of how to quickly and safely stop the operation in case of an emergency or unexpected event. Clearly mark emergency stop buttons or switches and ensure they are easily accessible.

9. Lockout/Tagout: If performing maintenance, repairs, or adjustments on the pulley system, follow proper lockout/tagout procedures to isolate energy sources and prevent accidental startup. Lockout/tagout procedures help protect against unexpected movements or releases of stored energy.

10. Risk Assessment: Conduct a thorough risk assessment before using pulleys. Identify potential hazards, evaluate associated risks, and implement appropriate control measures to mitigate those risks. Regularly review and update risk assessments as necessary.

It is essential to consult relevant industry standards, guidelines, and local regulations specific to your application or jurisdiction to ensure compliance with safety requirements when using pulleys.

China factory Pulley Block for Ship Unloader Loader   pulley band	China factory Pulley Block for Ship Unloader Loader   pulley band
editor by CX