China Good quality 1b Qd Bushed Sheaves Pulleys for a and B Belts pulley attachments

Product Description

1B QD Bushed Sheaves Pulleys for A and B Belts


Product Description


1B series pulleys are manufactured for A, AX, AA, 4L, B, BX, BB, and 5L v-belts, ranging from 3.75″ to 20.35″ in diameter. Depending on the pulley size, they are made to use with SH, SDS, or SK QD bushings, which we also stock. Most of our single-groove 1B QD bushed pulleys are manufactured from a high-strength grade 35 cast iron, are phosphate-coated, and are painted for anti-corrosion. All of them are balanced at the factory for smooth machinery operation. The main benefit of using a QD (quick detachable) pulley is that if the bushing (hub) breaks, you don’t have to replace the whole assembly, or if just the pulley gets worn out, the same principle applies. The other significant benefit is that there is a broader range of bore options with QD pulleys than with the “fixed-bore” style.

Product Parameters


Bushing Type


Pitch Diameter (4L/A)

Pitch Diameter (5L/B)

Outside Diameter





Pulley Weight (LBS)

1B34SH SH E 3.0″ 3.4″ 3.75″ 7/32″ 7/8″ 1-5/16″ 21/32″ 2.0
1B36SH SH D 3.2″ 3.6″ 3.95″ 19/32″ 7/8″ 1-5/16″ 5/32″ 2.2
1B38SH SH D 3.4″ 3.8″ 4.15″ 19/32″ 7/8″ 1-5/16″ 5/32″ 2.4
1B40SH SH C 3.6″ 4.0″ 4.35″ 11/32″ 7/8″ 1-5/16″ 3/32″ 2.7
1B42SH SH C 3.8″ 4.2″ 4.55″ 11/32″ 7/8″ 1-5/16″ 3/32″ 2.9
1B44SH SH C 4.0″ 4.4″ 4.75″ 11/32″ 7/8″ 1-5/16″ 3/32″ 3.4
1B46SDS SDS C 4.2″ 4.6″ 4.95″ 11/32″ 7/8″ 1-5/16″ 3/32″ 4.0
1B48SDS SDS C 4.4″ 4.8″ 5.15″ 11/32″ 7/8″ 1-5/16″ 3/32″ 4.3
1B50SDS SDS C 4.6″ 5.0″ 5.35″ 11/32″ 7/8″ 1-5/16″ 3/32″ 4.7
1B52SDS SDS C 4.8″ 5.2″ 5.55″ 11/32″ 7/8″ 1-5/16″ 3/32″ 5.0
1B54SDS SDS C 5.0″ 5.4″ 5.75″ 11/32″ 7/8″ 1-5/16″ 3/32″ 5.3
1B56SDS SDS C 5.2″ 5.6″ 5.95″ 11/32″ 7/8″ 1-5/16″ 3/32″ 5.6
1B58SDS SDS C 5.4″ 5.8″ 6.15″ 11/32″ 7/8″ 1-5/16″ 3/32″ 5.9
1B60SDS SDS C 5.6″ 6.0″ 6.35″ 11/32″ 7/8″ 1-5/16″ 3/32″ 6.2
1B62SDS SDS C 5.8″ 6.2″ 6.55″ 11/32″ 7/8″ 1-5/16″ 3/32″ 6.5
1B64SDS SDS C 6.0″ 6.4″ 6.75″ 11/32″ 7/8″ 1-5/16″ 3/32″ 6.8
1B66SDS SDS C 6.2″ 6.6″ 6.95″ 11/32″ 7/8″ 1-5/16″ 3/32″ 7.2
1B68SDS SDS C 6.4″ 6.8″ 7.15″ 11/32″ 7/8″ 1-5/16″ 3/32″ 7.5
1B70SDS SDS C 6.6″ 7.0″ 7.35″ 11/32″ 7/8″ 1-5/16″ 3/32″ 7.8
1B74SDS SDS D 7.0″ 7.4″ 7.75″ 17/32″ 1″ 1-5/16″ 7/32″ 8.8
1B80SDS SDS D 7.6″ 8.0″ 8.35″ 17/32″ 1″ 1-5/16″ 7/32″ 9.6
1B86SDS SDS D 8.2″ 8.6″ 8.95″ 17/32″ 1″ 1-5/16″ 7/32″ 10.0
1B94SDS SDS D 9.0″ 9.4″ 9.75″ 17/32″ 1″ 1-5/16″ 7/32″ 10.5
1B110SDS SDS D 10.6″ 11.0″ 11.35″ 17/32″ 1″ 1-5/16″ 7/32″ 11.0
1B124SDS SDS D 12.0″ 12.4″ 12.75″ 17/32″ 1″ 1-5/16″ 7/32″ 12.0
1B136SDS SDS D 13.2″ 13.6″ 13.95″ 17/32″ 1″ 1-5/16″ 7/32″ 14.0
1B154SK SK C 15.0″ 15.4″ 15.75″ 21/32″ 1″ 1-15/16″ 9/32″ 16.0
1B160SK SK C 15.6″ 16.0″ 16.35″ 21/32″ 1″ 1-15/16″ 9/32″ 16.6
1B184SK SK C 18.0″ 18.4″ 18.75″ 21/32″ 1″ 1-15/16″ 9/32″ 18.0
1B200SK SK C 19.6″ 20.0″ 20.35″ 21/32″ 1″ 1-15/16″ 9/32″ 20.0


Company Profile

HZPT is a professional manufacturer of mechanical parts. Our main products are belt pulleys, sprockets, taper sleeves, coupling, and other transmission parts. Its products are mainly exported to Germany, Britain, France, and other European countries, with an annual export value of 18 million US dollars, accounting for more than 65% of the total output. The annual output value reached 200 million yuan.

Our products all adopt international, European, and American advanced industrial standards, use precise and good processing equipment, develop reasonable production technology, apply efficient and flexible management systems, and improve the quality management system to ensure that the product quality is good and the price is affordable.

Our factory adheres to the enterprise concept of “quality: the basis of enterprise survival, integrity: the basis of enterprise development, service: the source of enterprise development, low price: the instrument of enterprise development.” We are always looking CHINAMFG to the presence of customers at home and abroad, seeking CHINAMFG benefits and joint cause development.

Warehouse Stock

The warehouse covers an area of 5000 square CHINAMFG and can provide all kinds of standard models A/B/C/Z, with complete quantity and large quantity in stock. Meanwhile, it accepts all sorts of non-standard customization for drawing production. The daily production capacity is 10 tons, and the delivery time is short.

Packaging & Shipping


Experienced Workers Packing Pulleys Carefully, safe wooden cases keep parts from being injured or damaged during sea or air shipment.

  /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Certification: CE, ISO
Pulley Sizes: Type F
Manufacturing Process: Forging
Material: Carbon Steel
Surface Treatment: Baking Paint
Application: Chemical Industry, Grain Transport, Mining Transport, Power Plant
US$ 9999/Piece
1 Piece(Min.Order)

Request Sample

sheave pulley

Can compound pulleys be customized for specific load requirements?

Yes, compound pulleys can be customized to meet specific load requirements. Here is a detailed explanation of how compound pulleys can be customized for specific load requirements:

1. Pulley Selection: The selection of pulleys is a crucial aspect of customizing a compound pulley system for specific load requirements. Different types of pulleys, such as fixed pulleys and movable pulleys, can be chosen based on the desired mechanical advantage and lifting capacity. Pulleys with different sizes, materials, and designs can be selected to accommodate the specific load requirements and operating conditions. Additionally, pulleys may have features such as bearings or sheaves that reduce friction and enhance performance.

2. Configuration Design: The configuration of the compound pulley system can be designed or adjusted to optimize its lifting capacity for specific load requirements. The number of pulleys, the arrangement of the pulleys, and the ratio of fixed to movable pulleys can be customized to achieve the desired mechanical advantage and lifting capacity. By carefully designing the configuration, the compound pulley system can be tailored to handle specific loads efficiently and effectively.

3. Material Selection: The choice of materials for the cables or ropes used in the compound pulley system can be customized based on the load requirements. Different materials, such as wire ropes, synthetic ropes, or high-performance ropes, offer varying levels of strength, flexibility, and resistance to environmental factors. The selection of the appropriate material ensures that the cables or ropes can safely support and lift the specific loads without compromising the integrity of the system.

4. Load Capacity Analysis: Customizing a compound pulley system for specific load requirements involves conducting load capacity analysis. This analysis takes into account factors such as the weight of the load, the desired lifting capacity, the applied force, and the mechanical advantage provided by the compound pulley system. By performing load capacity calculations, engineers and designers can determine the optimal configuration, pulley selection, and safety factors required to meet the specific load requirements.

5. Safety Considerations: Customizing compound pulleys for specific load requirements also involves considering safety factors. It is essential to ensure that the compound pulley system is designed and customized to handle the loads safely, without exceeding the weight capacity of the pulleys, cables, or ropes. Adequate safety margins should be incorporated to account for dynamic or unexpected loads that may occur during lifting operations. Compliance with relevant safety standards and regulations is crucial to ensure the safe and reliable performance of the customized compound pulley system.

By considering pulley selection, configuration design, material selection, load capacity analysis, and safety considerations, compound pulleys can be effectively customized to meet specific load requirements. Customization allows for the efficient and safe lifting of heavy loads in various industries and applications.

sheave pulley

How are compound pulleys used in the operation of cranes and elevators?

Compound pulleys play a crucial role in the operation of cranes and elevators, enabling them to lift and move heavy loads with ease and efficiency. The design and arrangement of compound pulleys provide mechanical advantage, allowing for the multiplication of force and the reduction of effort required to lift objects. Here is a detailed explanation of how compound pulleys are used in the operation of cranes and elevators:

Crane Operation:

In cranes, compound pulleys are commonly used in the lifting mechanism to handle heavy loads. The pulleys are arranged in a system of ropes or cables, with multiple sheaves connected in series or parallel. The ropes or cables pass through the sheaves, creating multiple lines of support. The combination of fixed and movable pulleys in the system increases the mechanical advantage, making it easier to lift heavy objects. When force is applied to the rope or cable, the compound pulleys distribute the load and reduce the amount of force required from the operator.

Elevator Operation:

In elevators, compound pulleys are utilized in the hoisting system to move the elevator car vertically. The pulleys are typically located at the top of the elevator shaft. The elevator car is suspended by ropes or cables that pass over the sheaves of the compound pulleys. The mechanical advantage provided by the pulley system allows the elevator motor to exert less force to lift the car. The compound pulleys effectively distribute the weight of the car, making it easier to move up and down. Additionally, the design of the pulley system allows the elevator car to be lifted and lowered smoothly and safely.

Both in cranes and elevators, compound pulleys offer the following advantages:

  1. Increased Lifting Capacity: The mechanical advantage provided by compound pulleys allows cranes and elevators to lift much heavier loads than what could be achieved with a single pulley system. The compound pulleys distribute the load over multiple lines of support, reducing the strain on individual ropes or cables and enabling the lifting of heavier objects.
  2. Efficiency: Compound pulleys increase the efficiency of cranes and elevators by reducing the amount of force required to lift or lower loads. The mechanical advantage achieved through the arrangement of pulleys allows operators to lift heavy objects with less effort, making the operation more efficient and less fatiguing.
  3. Precise Control: Compound pulley systems offer precise control over the movement of cranes and elevators. By adjusting the tension and arrangement of the ropes or cables, operators can control the speed and direction of the lifting or lowering process. This precise control allows for safe and accurate positioning of loads in various applications.
  4. Smooth Operation: The combination of fixed and movable pulleys in compound pulley systems helps ensure smooth and stable operation of cranes and elevators. The pulleys reduce the friction between the ropes or cables and the sheaves, minimizing jerky movements and providing a smooth lifting or lowering experience.

In summary, compound pulleys are essential components in the operation of cranes and elevators. Their mechanical advantage, increased lifting capacity, efficiency, precise control, and smooth operation make them ideal for handling heavy loads and facilitating vertical transportation in various industries and settings.

sheave pulley

What is a compound pulley, and how does it function in mechanical systems?

A compound pulley is a type of pulley system that consists of multiple fixed and movable pulleys working together to provide mechanical advantage in lifting or moving heavy loads. Here is a detailed explanation of what a compound pulley is and how it functions in mechanical systems:

A compound pulley is composed of two or more pulleys, which are connected by a continuous loop of rope, cable, or belt. The pulleys are arranged in such a way that some are fixed to a support structure, while others are movable. The rope or cable wraps around the pulleys, creating multiple line segments that support the load.

The primary function of a compound pulley is to multiply the force applied to the rope or cable, allowing the user to lift or move heavy loads with less effort. This mechanical advantage is achieved through the distribution of the load’s weight across multiple line segments and the reduction of the force required to lift the load.

When a force is applied to the free end of the rope or cable, the movable pulleys in the compound pulley system move in response. As the movable pulleys move, the length of rope or cable on one side of the pulley system decreases while the length on the other side increases. This movement causes the load to be lifted or moved.

The mechanical advantage provided by a compound pulley is determined by the number of line segments supporting the load. Each additional segment of rope or cable increases the mechanical advantage of the system. For example, a compound pulley with three line segments supporting the load provides a mechanical advantage of three, meaning the force applied to the rope or cable is multiplied by three.

Compound pulleys are commonly used in various mechanical systems, including cranes, hoists, elevators, and block and tackle systems. They are particularly useful in situations where heavy loads need to be lifted or moved with reduced effort or where space constraints make it challenging to incorporate larger, single-pulley systems.

It is important to note that while compound pulleys can provide mechanical advantage, they also introduce some trade-offs. As the mechanical advantage increases, the distance through which the rope or cable needs to be pulled also increases. Additionally, compound pulley systems may introduce some friction and inefficiency, requiring regular maintenance and lubrication to ensure smooth operation.

In conclusion, a compound pulley is a pulley system that utilizes multiple fixed and movable pulleys to provide mechanical advantage in lifting or moving heavy loads. By distributing the load across multiple line segments, compound pulleys reduce the force required to lift the load, making them valuable components in various mechanical systems.

China Good quality 1b Qd Bushed Sheaves Pulleys for a and B Belts   pulley attachments	China Good quality 1b Qd Bushed Sheaves Pulleys for a and B Belts   pulley attachments
editor by CX