HTD Pulley for mailing systems

HTD Pulley for Mailing Systems

HTD Pulley for Mailing Systems

Introduction to HTD Pulleys

HTD (High Torque Drive) pulleys are essential components in various machinery and mailing systems. Their unique design allows for precise, high-torque transmission, ensuring efficiency and reliability in operations.

What is an HTD Pulley?

HTD pulley

An HTD pulley is a synchronous pulley designed to work with HTD belts. These pulleys have a special tooth profile that minimizes slippage and enhances load distribution.

Tooth Profile

The unique rounded teeth of HTD pulleys provide a larger surface area for contact with the belt, reducing the risk of slippage and wear.

Material and Durability

HTD pulleys are made from robust materials like aluminum or steel, ensuring long-lasting performance and resistance to wear and tear.


These pulleys are widely used in high-precision applications such as mailing systems, robotics, and automotive industries, where accuracy and reliability are paramount.

What is the Minimum Pulley Size for HTD 5M?

HTD pulley

The HTD 5M pulley has specific size requirements to ensure optimal performance.

Minimum Number of Teeth

The minimum number of teeth for an HTD 5M pulley is generally around 15. This ensures proper engagement with the belt and prevents excessive stress on the teeth.

Diameter Specifications

For HTD 5M pulleys, the minimum pitch diameter is typically around 24 mm. This diameter allows for efficient power transmission while maintaining compactness.

Load Capacity

The size of the pulley also dictates its load capacity. Smaller pulleys may have limited load capabilities compared to larger ones, which need to be considered during the design phase.

What is the Difference Between GT and HTD Belts?

While both GT (Gates Tooth) and HTD belts are designed for high-torque applications, they have distinct differences.

Tooth Profile

GT belts have a trapezoidal tooth profile, whereas HTD belts have a curvilinear profile. This difference affects the belt’s engagement with the pulley and its load distribution characteristics.

Load Distribution

HTD belts provide more uniform load distribution across the belt teeth, reducing wear and increasing longevity. GT belts, on the other hand, offer higher torque capacity but may experience uneven wear.


HTD belts are often used in applications requiring precise positioning and low backlash, while GT belts are preferred for high-load, high-torque applications.

How to Choose or Customize the Right HTD Pulley

HTD pulley

Selecting the right HTD pulley involves several key considerations to ensure compatibility and performance.

Load Requirements

Determine the load requirements of your application. This includes both the maximum and continuous loads to ensure the pulley can handle the stress.

Pulley Size

The size of the pulley, including its diameter and number of teeth, should align with the belt’s specifications and the application’s spatial constraints.


Choose the appropriate material based on environmental conditions and load demands. Aluminum is lightweight and corrosion-resistant, while steel offers superior strength.

Precision and Tolerance

Consider the precision and tolerance requirements of your system. High-precision pulleys are essential for applications demanding minimal backlash and high accuracy.

Customization Options

If standard pulleys do not meet your requirements, consider custom options. Custom pulleys can be designed to match specific dimensions, materials, and performance criteria.

HZPT: Your Trusted Supplier for HTD Pulleys

HZPT specializes in designing, developing, and manufacturing high-performance components, including HTD pulleys. Our products are widely popular in Europe, South America, and Australia, earning the trust of many customers. We prioritize product quality and demonstrate a “customer-first service” policy. With a young, vibrant, and capable team, we believe we can provide professional services to meet your needs. Quick delivery is one of our advantages.

High-Quality Products

Our HTD pulleys are manufactured to the highest standards, ensuring durability and reliability under demanding conditions.

Customer-Centric Service

We prioritize customer satisfaction and provide tailored services to meet individual requirements, ensuring a seamless purchasing experience.

Efficient Delivery

Our efficient logistics system allows us to deliver products quickly, minimizing downtime and ensuring timely project completion.

Professional Expertise

Our team of experts offers professional guidance and support, helping customers choose the right products for their specific needs.

Comprehensive OEM Services

We offer comprehensive OEM services, enabling customers to receive custom-designed pulleys that meet precise specifications and performance criteria.

In China, we have a professional factory to develop new products and provide OEM services. Additionally, we have a well-stocked warehouse and timely distribution to meet the needs of many customers. We will continue to strive to improve our services and offer the best quality products at competitive prices. Any inquiries or opinions are greatly appreciated, please feel free to contact us.