| Size | Bushing Type | Pitch Diameter (4L/A) | Pitch Diameter (5L/B) | Outside Diameter | Type | (O.L.) | (L) | (P) | (C) | (H) | (F) | (G) | (X) | (E) | Pulley Weight (LBS) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3TB34 | P2 | 3.0″ | 3.75″ | 3.75″ | 3 | 3-13/16″ | 2-15/16″ | 1-1/16″ | 7/8″ | 3″ | 2-1/2″ | 5/8″ | 2-5/16″ | 1/4″ | 3.8 |
| 3TB36 | P2 | 3.2″ | 3.95″ | 3.95″ | 3 | 3-13/16″ | 2-15/16″ | 1-1/16″ | 7/8″ | 3″ | 2-1/2″ | 5/8″ | 2-5/16″ | 1/4″ | 4.4 |
| 3TB38 | P1 | 3.4″ | 4.15″ | 4.15″ | 5 | 3-5/8″ | 1-15/16″ | 5/8″ | 7/16″ | 3″ | 2-1/2″ | — | 1-5/16″ | 1/4″ | 3.8 |
| 3TB40 | P1 | 3.6″ | 4.35″ | 4.35″ | 5 | 3-5/8″ | 1-15/16″ | 5/8″ | 7/16″ | 3″ | 2-1/2″ | — | 1-5/16″ | 1/4″ | 4.5 |
| 3TB42 | P1 | 3.8″ | 4.55″ | 4.55″ | 5 | 3-5/8″ | 1-15/16″ | 5/8″ | 7/16″ | 3″ | 2-1/2″ | — | 1-5/16″ | 1/4″ | 4.9 |
| 3TB44 | P1 | 4.0″ | 4.75″ | 4.75″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 5.1 |
| 3TB46 | P1 | 4.2″ | 4.95″ | 4.95″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 6.0 |
| 3TB48 | P1 | 4.4″ | 5.15″ | 5.15″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 6.3 |
| 3TB50 | P1 | 4.6″ | 5.35″ | 5.35″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 6.9 |
| 3TB52 | P1 | 4.8″ | 5.55″ | 5.55″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 7.5 |
| 3TB54 | P1 | 5.0″ | 5.75″ | 5.75″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 8.3 |
| 3TB56 | P1 | 5.2″ | 5.95″ | 5.95″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 9.0 |
| 3TB58 | P1 | 5.4″ | 6.15″ | 6.15″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 9.6 |
| 3TB60 | P1 | 5.6″ | 6.35″ | 6.35″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 10.5 |
| 3TB62 | P1 | 5.8″ | 6.55″ | 6.55″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 9.4 |
| 3TB64 | P1 | 6.0″ | 6.75″ | 6.75″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 9.5 |
| 3TB66 | P1 | 6.2″ | 6.95″ | 6.95″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 10.0 |
| 3TB68 | P1 | 6.4″ | 7.15″ | 7.15″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 10.4 |
| 3TB70 | Q1 | 6.6″ | 7.35″ | 7.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 13.0 |
| 3TB74 | Q1 | 7.0″ | 7.75″ | 7.75″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 13.3 |
| 3TB80 | Q1 | 7.6″ | 8.35″ | 8.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 15.3 |
| 3TB86 | Q1 | 8.2″ | 8.95″ | 8.95″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 18.9 |
| 3TB90 | Q1 | 8.6″ | 9.35″ | 9.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 18.1 |
| 3TB94 | Q1 | 9.0″ | 9.75″ | 9.75″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 18.0 |
| 3TB110 | Q1 | 10.6″ | 11.35″ | 11.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 21.3 |
| 3TB124 | Q1 | 12.0″ | 12.75″ | 12.75″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 25.4 |
| 3TB136 | Q1 | 13.2″ | 13.95″ | 13.95″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 27.4 |
| 3TB154 | Q1 | 15.0″ | 15.75″ | 15.75″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 29.8 |
| 3TB160 | Q1 | 15.6″ | 16.35″ | 16.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 32.0 |
| 3TB184 | Q1 | 18.0″ | 18.75″ | 18.75″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 37.8 |
| 3TB200 | Q1 | 19.5″ | 20.35″ | 20.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 49.9 |
| 3TB250 | Q1 | 24.5″ | 25.35″ | 25.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 61.0 |
| 3TB300 | Q1 | 29.5″ | 30.35″ | 30.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 78.5 |
| 3TB380 | Q1 | 37.5″ | 38.35″ | 38.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 110.0 |
3TB series pulleys are manufactured for A, AX, AA, 4L, B, BX, BB, and 5L v-belts, ranging from 3.75″ to 38.35″ in diameter. Depending on the pulley size, they are made to use with P1 taper bushings or Q1 taper bushings, which we also stock. Most of our 3TB 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.
3TB Style Pulley Size Chart
Features and Benefits
I. The belt is an elastomer that can mitigate load impact and run smoothly without noise
II. Overload will cause the belt to slip on the wheel, thus playing the role of protecting the whole machine
Ⅲ. The grooves of most American standard pulleys are suitable for several different belt types, and the belt design and application are relatively flexible.
Ⅳ. There are many types of American standard pulley grooves and taper bushings. Some pulleys and bushings are allowed to be installed on the front and back, which has become a solution for harsh conditions on different occasions.
V. American standard pulleys and taper bushings can achieve precise balance control and perform well in transmission.
Applications of 3TB Series Pulley
3TB series pulleys are widely used in the power output of small diesel engines, agricultural vehicles, tractors, automobiles, mining machinery, machining equipment, textile machinery, packaging machinery, lathes, forging machines, some small horsepower motorcycle power transmission, agricultural machinery power transmission, Air compressor, reducer, reducer, generator, etc.
Technological Processing
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 U.S. 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 forward to the presence of customers at home and abroad, seeking CZPT benefits and joint cause development.
Warehouse Stock
The warehouse covers an area of 5000 square meters 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.
Additional information
Types of Pulley Systems
If you’ve ever tried to lift a pail of water, you’ve probably seen the pulley system in action. Pulleys are extremely useful tools for everything from household appliances to heavy industrial machinery. Different kinds of pulley systems are classified according to their amount of motion. Some types have fixed axes, while others have movable axes. Some common uses of pulleys are listed below.
two-wheel pulley
Pulleys are complex structures with thin-walled and thick-walled sections. Therefore, they require specific forging designs. The tool concept for the production of pulleys is shown in Figure 11.6. Using the generated tool, the pulley can be forged into different shapes. Process parameters must be optimized based on material, surface quality and metallographic analysis.
Pulleys are wheels mounted on shafts. Its main function is to assist the movement of heavy objects. A single-wheel pulley can change the direction of the force, enabling a person to pull heavy objects. A dual-wheel pulley distributes the weight evenly across both wheels, allowing it to lift the same weight with half the effort.
The mechanical advantage of a 2-wheel pulley is that it reduces the force required by about half. A 100 kg object can be lifted with a force of 500 Newtons. The mechanical advantage of a pulley with 2 wheels is twice that of a single-wheel pulley. However, care should always be taken when using 2-wheel pulleys.
Two-wheel pulleys can be fixed or movable. A single wheel pulley can only change direction when the load is placed on 1 side of the wheel. Two-wheel pulleys change direction when lifting a load, requiring half the force. Live wheels are better for heavier loads. The movable pulley can be adjusted with the load, and the load distribution is more uniform. Active pulleys can be used with single-rope or 2-wheel pulleys.
A pulley system with 2 wheels is called a compound pulley. This type of pulley system has a complex design that reduces the force required to move the load. Two-wheel pulleys are common in industrial and construction environments. These pulleys require a lot of space to install and operate. Additionally, they require regular maintenance to avoid wear and tear.
composite pulley
Compound pulleys are used to increase lift. One fixed pulley is attached to the overhead while the other fixed pulley is attached to the load. This setup minimizes the force required to lift weights, allowing you to lift heavier weights. There are several different types of compound pulleys, each with their own strengths and weaknesses. Below are some examples of their application. Some of the most common are listed below.
Composite pulleys are usually made from 2 different types of wheels. The first 1 is fixed and secure. The second type, movable, is attached to something that moves. The third type, compound pulley, is a combination of a movable pulley and a fixed pulley. Below are 3 types of comparisons. The table below compares them and explains their advantages and disadvantages. Composite pulleys are the most versatile of the 3.
The number of sheave segments that make up the composite sheave system increases the mechanical advantage of the system. Each segment adds 1 percent of the total weight, and the ideal mechanical advantage is 2 or more. So a compound pulley with 4 segments will lift 3-quarters of the weight. This is because the force applied to the load is multiplied by 4. The result is a better boost.
While composite pulleys have many uses, they are most commonly used on larger sailboats. These pulleys work by changing the direction of the control wire or by changing the mechanical force of the rope. They also make it easier to lift heavier objects. Composite pulleys are more expensive than simple pulleys, so consider your needs before buying. The advantages of composite pulleys outweigh the disadvantages.
A basic compound pulley is a device consisting of 2 wheels with fixed points. Ropes are looped around the wheels and are used to lift heavy objects. When you pull on the rope, the rope pulls the 2 wheels closer together. Serious injury could result if this equipment is installed incorrectly. Never exceed the lifting capacity of pulleys and other safety devices that may be attached. When using pulleys, be sure to follow the instructions on the mounting hardware to avoid accidents.
Fixed pulley
Moving pulleys and fixed pulleys are different types of mechanical devices. The movable pulley moves with the object it is used to lift. Because it attaches to the object it is used to lift, it is great for lifting heavy objects. These devices are used in construction cranes and multipurpose elevators. There are many different types of pulleys, and their uses vary widely. Below is a brief overview of these devices.
The simplest pulley set consists of a wheel that is mounted on the ceiling. A rope is attached at 1 end and a person pulls at the other end. The rope is strong enough to keep a person standing while lifting weights. It takes about 200 Newtons of force to lift a 20 kg weight. In contrast, a movable pulley requires a force of 1000N, which makes it easier to lift heavy objects.
Fixed pulleys are another common lifting device. They work by using ropes and slotted wheels attached to the object to be lifted. These devices are convenient to use because they are easy to set up. Moving the scroll wheel doesn’t change direction, so it’s easier to move objects without putting too much pressure on the back. Unlike a moving rope, a moving object will feel much lighter than its actual weight.
Fixed pulleys are widely used in construction and agriculture. Fixed pulleys can help lift supplies and equipment from scaffolding. These items are often heavy and difficult to lift directly. Fixed pulleys at the top of the scaffolding will allow people at the bottom to lift objects more easily. As a result, those at the bottom are less stressed and more productive. Fixed pulleys will save time and money compared to moving ropes.
Composite pulleys combine fixed and movable pulleys to increase the power of movement. A compound pulley system uses both types of pulleys and enables a person to change direction by reversing the direction of a force. The compound pulley system will save time and effort as the user only has to put in half the effort. Unlike moving ropes, composite pulleys are easy to adjust and are the most versatile system on the market.
Blocks and tackles
A pulley block system is a rope hoist that uses a set of pulleys mounted on a frame. The blocks are arranged in a row, and the threaded rope is called a pulley. Pulley systems help amplify the 10sion of the rope and are common in sailboats, cranes and drilling rigs. However, these systems are not without drawbacks.
The pulley pulley system can be equipped with as many pulleys as required. This method allows a person to lift heavy objects. The pulley block system can contain the required number of pulleys to achieve the desired height. The main disadvantage of pulley systems is that they create a lot of friction on the pulley shaft.
Pulley systems use 2 types of pulleys. A movable pulley is attached to the load, allowing it to move with the load. On the other hand, fixed pulleys are fixed on fixed points. Therefore, a pulley block system may consist of multiple pulleys mounted on a shaft. For example, the 2 pulleys attached to the shaft each have their own mechanical advantages.
Several types of tackle systems have been developed in recent centuries. The most basic is the gun mount, which uses 2 pulleys to lift the load. The mechanical advantage of such a system is 2 to 3 times the distance required by the rope to move the load. Depending on how they’re assembled, the system can lift 400 pounds with 80 or 100 pounds of force.
Another type of pulley is a combination of multiple wheels. The wheels on pulleys are supported by a housing or frame. The chain is attached to the pulley, and the rope is pulled to lift it. A combined pulley system will have multiple wheels. As the load increases, the force on the pulley also increases. This approach is generally more expensive than intercept and intercept systems.
