HTD Pulley for escalators

HTD Pulley for Escalators

HTD Pulley for Escalators


In the intricate world of escalator mechanics, HTD pulleys play a pivotal role in ensuring smooth operation. This article delves into the specifics of HTD pulleys, exploring their importance, technical intricacies, and applications.

Understanding HTD Pulleys

High Torque Drive (HTD) pulleys are fundamentally designed to transmit power with high efficiency. Their curvilinear tooth profile ensures a more robust engagement with the belt, minimising slip and enhancing load capacity.

What is an HTD Pulley?

HTD pulley

HTD pulleys are integral to the operation of modern escalators, providing several unique features:

Tooth Profile

The specific shape of the teeth in an HTD pulley allows for a more secure belt grip, which reduces the risk of slippage under high torque conditions.

Material Composition

Typically constructed from durable metals or reinforced plastics, HTD pulleys are designed to withstand substantial wear and tear, ensuring longevity and reliability.

Load Distribution

The design of HTD pulleys enables even distribution of load across the belt, preventing premature wear and tear and extending the lifespan of both the pulley and the belt.


With their high torque transfer capabilities, HTD pulleys are highly efficient, making them ideal for escalators that demand constant, reliable performance.


HTD pulleys are relatively low-maintenance compared to other types due to their robust design and material composition.

What is the minimum pulley size for HTD 5M?

HTD pulley

Choosing the right pulley size for HTD 5M is crucial for optimal performance. Here are some key considerations:


The minimum recommended diameter for an HTD 5M pulley is typically around 15 teeth. This ensures adequate engagement with the belt and prevents slippage.

Load Capacity

Smaller pulleys may not distribute the load as efficiently, so it¡¯s important to balance pulley size with load requirements to maintain system integrity.


Smaller pulleys can increase the operational speed of the belt, but this must be balanced against the torque requirements and potential stress on the belt.

What is the difference between GT and HTD belts?

While GT (Gates Tooth) and HTD belts might seem similar, they have distinct differences:

Tooth Design

GT belts feature a modified curvilinear tooth design that offers a smoother engagement compared to the standard HTD profile, reducing noise and vibration.


GT belts are often used in applications requiring precision and reduced backlash, whereas HTD belts are preferred in high-torque scenarios like escalators.

Load Engagement

HTD belts offer better load distribution across the teeth, while GT belts are designed for more precise load transmission.

How to Choose or Customize the Right HTD Pulley

HTD pulley

Selecting or customizing an HTD pulley involves several critical factors:

Load Requirements

Assess the load requirements of your application to determine the appropriate size and material for the pulley.

Environmental Conditions

Consider the operating environment, such as temperature and exposure to chemicals, which can affect material choice.

Speed and Torque Specifications

Ensure the pulley can handle the speed and torque requirements without causing excessive wear on the belt.

Material Selection

Choose materials that offer the necessary durability and strength, such as aluminum or steel for high-stress applications.


Work with manufacturers to customize tooth profiles and pulley diameters to match specific application needs.

Our Company and Product Advantages

HZPT specializes in designing, developing, and manufacturing high-performance parts, including HTD pulleys. Here¡¯s why you should consider our products:

Exceptional Quality

We prioritize product quality, ensuring that our HTD pulleys meet the highest standards for durability and performance.

Customer-Centric Service

Our policy of “customer first service” means we are dedicated to meeting all your needs with professional and responsive support.

Extensive Market Reach

Our products are widely popular in Europe, South America, and Australia, demonstrating global trust and satisfaction.

Innovative Manufacturing

With a professional factory in China, we excel in developing new products and providing OEM services to meet specific client needs.

Efficient Distribution

Our well-stocked warehouse and rapid delivery system ensure that you receive your products promptly, minimizing downtime.

At HZPT, we continuously strive to improve our services and provide the highest quality products at competitive prices. For any inquiries or feedback, please feel free to contact us. We look forward to collaborating with you to meet all your HTD pulley needs.