FAQ

What is a pulley?

A pulley is a circular mechanical component that typically has a groove on its circumference and is mainly used for:

Transmitting power: By connecting with other pulleys via a belt, it transfers rotary motion and power from one shaft to another. This is known as belt drive.

Changing the direction of motion: Like a simple pulley, when used with a rope, it can change the direction of the applied force.

In power transmission applications, pulleys are usually used in pairs or more, connected by a belt. When one pulley (the driving pulley) rotates, the belt drives the other pulley(s) (the driven pulley) to rotate, thereby transmitting power.

Common features of pulleys:

• Simple structure: Usually composed of a hub and a rim, with a groove on the rim for the belt to fit into.

• Smooth operation and low noise: Compared to gear or chain drives, belt drives are generally quieter and smoother.

• Overload protection: When the load is too large, the belt may slip, thus protecting the mechanical equipment.

• Suitable for transmissions with larger center distances: The distance between the two shafts can be relatively large.

There are many types of pulleys, common ones include:

• V-belt pulley: The groove is V-shaped, used with V-belts, providing greater friction and suitable for medium to high power transmission.

• Flat belt pulley: The rim is flat, used with flat belts, suitable for light load, high-speed transmission.

• Timing belt pulley (synchronous pulley): The rim has teeth that mesh with the teeth of a timing belt, achieving precise synchronous transmission without slippage.

• Multi-groove pulley: The rim has multiple parallel V-shaped grooves, used with multi-groove belts, offering higher transmission efficiency and suitable for compact structures.

Common Pulley Materials and Their Characteristics

There is a wide range of material options available today. Below are three commonly used pulley materials:

1. Aluminum

Aluminum is one of the most commonly used materials in timing pulley design, primarily due to its durability and light weight. This material also has good tensile strength, making it suitable for applications requiring pulleys with high load-bearing capacity.

Aluminum is also corrosion-resistant; when exposed to moisture (or oxygen), it forms a thin oxide layer that prevents further oxidation, thereby preventing corrosion. This makes aluminum the ideal material for timing pulleys in working environments prone to humidity.

2. Steel

Steel generally offers excellent strength and durability and is more affordable in price compared to other materials (including aluminum). However, keep in mind that steel is heavier than aluminum (especially about 2.5 times denser). Steel is also harder than aluminum and generally cannot be pushed to the same extreme dimensional limits without cracking or deforming.

3. Plastic

Plastics combine the lightweight and corrosion-resistant advantages of aluminum with the cost-effectiveness of steel. Therefore, they are very suitable for applications in corrosive working environments or conditions with fluids, flammable gases, and solvents.

Confirm process environment → Consult professional precision component suppliers → Comprehensive evaluation → Correct selection

Chan Far Metal Ltd. professionally provides various precision metal components, integrating R&D, production, and sales, and emphasizing after-sales service. If you have developing components in the field of pulley applications and are seeking professional technical services to improve the product quality for the overall efficiency of the equipment, or if you want to learn more about the application of linear bearings in semiconductor production, please feel free to 【Contact Us】. Chan Far Metal Ltd.- carefully selected, customized to your needs.

What are the types of belts? 

Here are the names and types of belts:

1. Wrapped classical belt/Classical v-belt:

   • M, A, B, C, D, E

   • Used in agriculture, ventilation, industrial machinery, etc.

   • Types K, M, 3L, 4L, 5L are also used for general power transmission, with attention to differences in width. (Wrapped classical belts are also known as standard V-belts)

2. Wrapped narrow wedge belt (High horsepower belt):

   • European standards: SPZ, SPA, SPB, SPC

   • American standards: 3V/9N, 5V/15N, 8V/25N

   • Used for high-power transmission (more than 50% higher than standard V-belts), in agriculture, ventilation, and industrial machinery. (Wrapped narrow wedge belts are also known as high-tension belts)

3. Light-duty belt:

   • K, M, 3L, 4L, 5L

   • Thinner and narrower compared to standard V-belts, used in household appliances like washing machines, dishwashers, fans, blowers, centrifugal pumps, lawn and garden equipment, etc.

4. Banded narrow wedge belt/Ribbed belt:

   • H, J, L, M

   • Lighter and thinner compared to other V-belts, suitable for smaller pulleys due to their lightness and thinness. (Banded narrow wedge belts are also known as multi-rib belts)

5. Double V-belt/Hexagonal belt:

   • AA, BB, CC

   • Also known as hex belts.

6. Variable speed belt:

   • Utilizes high-fiber load compounds to maximize flexibility and consistent shifting performance.

7. Cogged raw edge narrow wedge belt:

   • European standards: XPZ, XPA, XPB, XPC

   • American standards: 3VX, 5VX, 8VX

   • Japanese standards: MX, AX, BX, CX

   • Features e-POWER for energy savings compared to traditional V-belts, 6% lower power consumption compared to standard V-belts, and approximately twice the lifespan of standard V-belts. Suitable for general pulleys, used in agricultural machinery. (Cogged raw edge narrow wedge belts are also known as cogged V-belts)

There are various other specifications and types not mentioned here. Feel free to call for further discussion.

Where can I buy V-belts?

Here are some recommended manufacturers: 

• 三五橡膠：Various types of belts , etc.　← *Established Taiwanese rubber factory since 1946, providing a wide range of options (SWR markets globally). 

• 聯泰興業：Various types of belts　←A manufacturing company based in Thailand

• MiSUMi：Various types of belts　←Japanese-owned e-commerce platform in Taiwan, offering a wide range of industrial parts

• 迪一企業：V-Belts, Variable speed belts, Multi-rib belts, V-ribbed belts etc. ←A company engaged in diversified operations

• 伍全企業：Various types of belts　←Taoyuan-based e-commerce platform, similar to MiSUMi 

• 興國橡膠：Various types of belts　←A manufacturing company based in Taichung

• 新豐貿易：Various types of belts　←The Taiwanese distributor for Swedish SKF bearings

• 榮美膠業：Various types of belts　←Specializing in Taiwan-manufactured & internationally sourced products (focus on quick quotations)

The above information is provided. If you have any questions, please feel free to call for further discussion. 

What are the models of SPB, SPA, SPC, and SPZ V-belts? What are the differences? (Hereinafter referred to as V-belts)

Here are examples of Mitsuboshi's SPB, SPA, SPC, SPZ V-belts:

• 1. Mitsuboshi High-Speed Oil-Resistant Narrow V-Belts: SPA, SPB, SPC, SPZ, 3V, 5V, 8V

  2. Mitsuboshi Standard V-Belts: A, B, C, D, E, K, M

  3. Mitsuboshi High-Speed Oil-Resistant Narrow Banded V-Belts: SPA, SPB, SPC, SPZ, 3V, 5V, 8V

  4. Mitsuboshi Red Label V-Belts (Wedge Belts): 3V, 5V, 8V

Each model of V-belt specifies the cross-sectional dimensions:

• A-type V-belt: Top width 13mm, Thickness 8mm

• B-type V-belt: Top width 17mm, Thickness 10.5mm

• C-type V-belt: Top width 22mm, Thickness 13.5mm

• D-type V-belt: Top width 21.5mm, Thickness 19mm

• E-type V-belt: Top width 38mm, Thickness 25.5mm
  
  Corresponding dimensions (Width*Height): O (10*6), A (12.5*9), B (16.5*11), C (22*14), D (21.5*19), E (38*25.5)

Recommended groove angles for different types of belt pulleys at different diameters:

• O-type pulley: 34 degrees for pulley diameters ranging from 50mm to 71mm; 36 degrees for diameters between 71mm and 90mm; 38 degrees for diameters exceeding 90mm

• A-type pulley: 34 degrees for diameters between 71mm and 100mm; 36 degrees for diameters between 100mm and 125mm; 38 degrees for diameters exceeding 125mm

• B-type pulley: 34 degrees for diameters between 125mm and 160mm; 36 degrees for diameters between 160mm and 200mm; 38 degrees for diameters exceeding 200mm

• C-type pulley: 34 degrees for diameters between 200mm and 250mm; 36 degrees for diameters between 250mm and 315mm; 38 degrees for diameters exceeding 315mm

• D-type pulley: 36 degrees for diameters between 355mm and 450mm; 38 degrees for diameters exceeding 450mm

• E-type pulley: 36 degrees for diameters between 500mm and 630mm; 38 degrees for diameters exceeding 630mm.

How to maintain V-belts? 

1. When adjusting the tension of V-belts during regular inspections, if they fail to meet specified requirements even after adjustment, it's necessary to replace them with new V-belts. During replacement, all belts on the same pulley should be replaced simultaneously. Otherwise, the uneven load distribution due to differences in length between old and new belts can lead to belt vibration, uneven transmission, and reduced efficiency.

2. During operation, the operating temperature of V-belts should not exceed 140°F, and belts should not be randomly lubricated. If the V-belt surface appears shiny, indicating slippage, clean the surface dirt first and then apply an appropriate amount of belt wax. When cleaning V-belts, use warm water instead of cold or hot water.

3. For all types of V-belts, avoid applying rosin or sticky substances, and prevent contamination with engine oil, grease, diesel, and gasoline, as these can corrode V-belts and shorten their lifespan. The grooves of V-belts should not be contaminated with oil, as this can cause slippage.

4. When V-belts are not in use, store them in a place with relatively low temperature, no direct sunlight exposure, and no oil or corrosive fumes to prevent deterioration.

How many international standards are there for V-belt pulleys?

Common international standards for V-belt pulleys include:

• M, A, B, C, D, 3V, 5V, 8V specifications: These are common V-belt specifications suitable for various applications and requirements.

• JIS specifications: These are specifications set by the Japanese Industrial Standards (JIS), including A-type, B-type, C-type, etc.

• SPA, SPB, SPC, SPZ specifications: These specifications are formulated by the Japanese company Mitsuboshi (MITSUBOSHI) and are typically used for high-torque and high-speed applications.

The above are commonly used specifications, and there are other specifications not listed here. If you have any questions, please feel free to contact us for further discussion.

What are the characteristics of hexagonal belts? 

• 【Name】Hexagonal Belt, Hexagonal Drive Belt, Hex Belt, Hexagonal V-Belt 

• 【Specifications】DIN 7753 and ISO 5289 (DIN 7722 standard is used for the definition of grooves on agricultural machinery and pulleys) 

• 【Characteristics】

  1. Particularly suitable for high-load operations

  2. Especially designed for applications requiring repetitive bending and twisting transmission

  3. Both sides of the belt can be used for driving

  4. High-strength polyester core ensures stable length and fatigue resistance 

• 【Applications】Printing machinery, harvesters, combine harvesters, rice mills, textile machinery, cotton gins, stone crushers, rock crushers, and other machinery. 

• 【Sizes】Refer below

What is lathe machining? 

Lathe machining is the process of using a lathe tool to perform turning operations on a rotating workpiece. It can be equipped with tools such as drills, reamers, taps, dies, and knurling tools for corresponding processing tasks. Lathe machining can be further categorized into vertical lathe machining, horizontal lathe machining, and CNC automatic lathe machining based on its purpose and structure. 

Introduction to CNC Lathe Machining 

CNC stands for "Computer Numerical Control," which utilizes computer memory and input/output signals to control machine actions. CNC lathe machining refers to the lathe machining technique controlled by computer numerical control. It utilizes a CNC lathe machining controller to communicate between the computer and the lathe machine, enabling precise and high-volume lathe machining while avoiding human errors in capability. 

Introduction to the Construction of CNC Lathe Machining Equipment 

• Spindle Box: The main structure includes the housing, high-speed precision angular contact ball bearings, V-belt pulleys, and gear sets. Its function is to support the spindle, drive the rotation of the clamped workpiece, or hold cutting tools.

• Base: It bears the weight of the entire CNC lathe machining equipment and cutting vibrations. Internally, it serves as a coolant reservoir and is equipped with bolts for adjusting mechanical levelness for installation purposes.

• Bed Rails: The CNC lathe machining equipment typically has two sets of bed rails, with the X and Z axes rails perpendicular to each other. The X-axis controls the diameter of the workpiece, while the Z-axis controls its length.

• Tool Holder System: The tool holders for CNC lathe machining equipment come in various types, such as four-tool, six-tool, eight-tool, and twelve-tool turret systems.

• Column

• Bed plate

Advantages of CNC Lathe Machining 

Advantages of CNC Lathe Machining:

1. Suitable for mass production with frequent changes in production items.

2. Reduces setup and machining time.

3. Due to optimal design of cutting speeds and feeds, tool costs are lower. Products have good quality and high reliability.

4. Eliminates much of the pre-operation time. Reduces inspection costs.

5. Operators do not need to possess high-level technical skills.

6. Eliminates the need for special drills, fixtures, etc., saving machining time.

What applications Chan-Far provides on CNC machining? 

• Mechanical parts machining

• Precision parts machining

• Automotive parts machining

• Electronic parts and optical parts machining

• Medical parts machining

• Hardware parts machining

• Bathroom parts machining

• OEM/ODM machining

Other FAQs

1. Q: What are the main products of Chan Far Metal?
   A: Our main products include various CNC machined parts, V-belt pulleys, air compressor parts, bearing housings, agricultural machinery parts, and more. We also provide custom pulleys, metal welding, and casting and forging services.

2. Q: Do you offer ODM and OEM services?
   A: Yes, we specialize in ODM and OEM services. We can assist with everything from mold design to final product manufacturing, ensuring products meet your specifications.

3. Q: What CNC equipment do you have?
   A: Our CNC equipment includes a variety of lathes, milling machines, and punching machines, which can process materials like cast iron, carbon steel, aluminum, and copper, suitable for a wide range of precision parts.

4. Q: Do you provide material recommendations?
   A: Yes, we offer professional material recommendations based on product applications and environmental requirements, ensuring optimal durability and performance.

5. Q: What is your usual delivery time?
   A: Delivery time depends on the order size and complexity. Generally, standard products take 2-3 weeks, while custom items may take 4-6 weeks.

6. Q: Do you accept small batch orders?
   A: Yes, we accept small batch orders, particularly for prototype production or testing during the early stages of product development.

7. Q: Can you provide product samples?
   A: Yes, we can provide samples for testing and validation. Sample costs and shipping fees will be negotiated based on the specifics of the request.

8. Q: What payment methods do you accept?
   A: We accept various payment methods including wire transfers, credit cards, and checks. Payment terms can be discussed based on the specific order.

9. Q: How can I contact technical support?
   A: Our technical support is available from Monday to Friday, 8 AM to 5 PM. You can contact us via phone or email for quick responses.

10. Q: Which industries are your main customers from?
    A: Our main customers come from industries such as agricultural machinery, water pumps, air compressors, food machinery, textile machinery, and heavy equipment.

11. Q: Do you offer eco-friendly material options?
    A: Yes, we offer eco-friendly materials such as recycled aluminum and low-carbon steel. We also optimize our manufacturing process to reduce carbon emissions.

12. Q: What welding technologies do you use?
    A: We use CO2 welding and TIG welding (argon welding), which are suitable for a variety of metal materials and high-precision, high-strength products.

13. Q: Do you provide dynamic balancing services?
    A: Yes, we offer professional dynamic balancing services to ensure product stability and longevity, especially for high-speed applications.

14. Q: What standard pulleys do you offer?
    A: We offer a wide range of standard pulleys, including A-type, B-type, C-type, and hexagonal pulleys, with quick availability based on customer needs.

15. Q: Do you provide product warranties?
    A: Yes, we provide a one-year warranty that covers defects in materials and workmanship, but does not cover damage caused by improper use.

16. Q: Do you offer international shipping?
    A: Yes, we have an extensive international shipping network to deliver products worldwide, with customized packaging options available.

17. Q: Can you assist with product design optimization?
    A: Our engineering team can provide design optimization suggestions to enhance product performance and reduce manufacturing costs, ensuring it meets market demand.

18. Q: Do you accept urgent orders?
    A: Yes, we can accommodate urgent orders, and we will expedite production if our schedule allows, helping you meet critical deadlines.

19. Q: How do you ensure product accuracy?
    A: We use high-precision CNC equipment and a rigorous quality control process to ensure every product meets customer specifications.

20. Q: Do you offer custom packaging?
    A: Yes, we offer custom packaging services based on your needs, from small batch samples to bulk industrial packaging.

21. Q: How do you conduct quality inspections?
    A: Every batch of products undergoes multiple tests, including dimensional checks, material testing, and dynamic balancing tests, ensuring quality.

22. Q: What is your production capacity?
    A: We have a high production capacity and can handle multiple orders simultaneously, with the ability to produce thousands of parts each month.

23. Q: Do you offer technical training or guidance?
    A: We can provide product technical guidance to help our partners use our products correctly, improving production efficiency.

24. Q: How do you handle after-sales issues?
    A: For any after-sales issues, please contact our customer service team immediately. We will offer repair, replacement, or refund services based on the specifics of the situation.

25. Q: Do you accept 3D models for processing?
    A: Yes, we accept 3D models from customers and can directly use them for machining, reducing product development time.

26. Q: What is your logistics arrangement?
    A: We collaborate with several logistics companies to provide safe and fast transportation, offering customized shipping solutions for customers.

27. Q: Do you provide anti-corrosion treatment for parts?
    A: Yes, we can provide anti-corrosion treatments for parts, including galvanizing, painting, or other specialized coatings to enhance durability.

28. Q: Do you offer refurbishment services?
    A: Yes, we offer refurbishment or repair services for certain products, helping customers extend the life of their equipment.

29. Q: How can I schedule a technical consultation?
    A: You can schedule a technical consultation by contacting us via phone or email. We will arrange for one of our engineers to assist you.

30. Q: Do you have a digital product catalog?
    A: Yes, we provide a digital product catalog, which can be downloaded via email or from our website.

31. Q: How do you ensure product longevity?
    A: We use high-quality materials and perform strict quality control during production to ensure long-lasting, reliable performance.

32. Q: Is there a minimum order quantity for customized products?
    A: Some custom products may require a minimum order quantity. We will discuss the specifics with customers based on the particular project.

33. Q: Do you offer third-party certification services?
    A: Yes, upon customer request, we can arrange third-party testing or certification services and provide product compliance reports.

34. Q: Can I visit your factory?
    A: Yes, customers are welcome to schedule a visit to our factory to observe our production processes and quality control measures.

35. Q: Do you provide installation guides for products?
    A: Yes, we provide detailed installation and operation manuals for all our products to ensure proper use.

36. Q: Can I communicate in multiple languages?
    A: Yes, our team can communicate in multiple languages, including English and Chinese, making it easier for international customers to work with us.

37. Q: Do you offer rapid prototyping services?
    A: We offer rapid prototyping services using 3D printing and fast CNC machining technologies, helping customers quickly validate their designs.

38. Q: How do you handle seasonal demand surges?
    A: We plan ahead for seasonal demand fluctuations, keeping stock in advance and adjusting our production schedules to meet peak demand.

39. Q: Do you handle high-temperature or high-pressure applications?
    A: Yes, we produce parts designed to withstand extreme conditions, using specialized materials and processes to ensure reliability under high temperature and pressure.

40. Q: Can I get a price estimate?
    A: Prices are based on material costs, production complexity, order quantity, and delivery requirements. We provide detailed quotes for each order.

41. Q: Can you support different country-specific standards?
    A: Yes, we support multiple standards such as ISO, JIS, DIN, etc., and can manufacture products according to local specifications.

42. Q: Do you offer services for special coatings or treatments?
    A: Yes, we can apply special coatings like plating, anodizing, or heat treatment to enhance product performance for specific applications.

43. Q: How do you address defective products after delivery?
    A: Should any defects occur after delivery, we offer repair or replacement, depending on the nature of the issue, and will coordinate with the customer for a timely solution.

44. Q: Do you offer a flexible payment schedule for large orders?
    A: Yes, we offer flexible payment terms for large orders, including installment

45. Q: What certifications does your company hold?
    A: Chan Far Metal Ltd. is ISO 9001 certified, ensuring that our products and services meet international standards of quality management. We also adhere to other industry-specific certifications as required by our customers.

46. Q: Do you provide custom part design services?
    A: Yes, we offer custom part design services where our engineers collaborate with customers to develop tailored solutions that meet specific functional and aesthetic requirements.

47. Q: Can you assist with packaging design?
    A: Yes, we can assist in designing custom packaging that ensures product safety during transportation and aligns with your branding needs.

48. Q: What are your business hours?
    A: Our business hours are Monday to Friday, 8 AM to 6 PM. We are closed on weekends and public holidays. However, our customer service team is available via email for inquiries outside of office hours.