| Sheave Size | Bushing | Pitch Diameter (P.D.) | Outside Diameter (O.D.) | Type | (O.L.) | (L) | (P) | (C) | (H) | (F) | (G) | (X) | (E) | Weight (LBS) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12U8V125 | U2 | 12.3 | 12.5 | 15 | 13-7/8″ | 10-1/8″ | 2-3/4″ | 1″ | 8-3/8″ | 13-7/8″ | 1-1/2″ | 8-5/8″ | 15/32″ | 200.0 |
| 12U8V132 | U2 | 13.0 | 13.2 | 15 | 13-7/8″ | 10-1/8″ | 2-3/4″ | 1″ | 8-3/8″ | 13-7/8″ | 1-1/2″ | 8-5/8″ | 15/32″ | 243.0 |
| 12U8V140 | U2 | 13.8 | 14.0 | 15 | 13-7/8″ | 10-1/8″ | 2-3/4″ | 1″ | 8-3/8″ | 13-7/8″ | 1-1/2″ | 8-5/8″ | 15/32″ | 282.0 |
| 12U8V150 | U2 | 14.8 | 15.0 | 15 | 13-7/8″ | 10-1/8″ | 2-3/4″ | 1″ | 8-3/8″ | 13-7/8″ | 1-1/2″ | 8-5/8″ | 15/32″ | 331.0 |
| 12U8V160 | U2 | 15.8 | 16.0 | 15 | 13-7/8″ | 10-1/8″ | 2-3/4″ | 1″ | 8-3/8″ | 13-7/8″ | 1-1/2″ | 8-5/8″ | 15/32″ | 387.0 |
| 12U8V170 | U2 | 16.8 | 17.0 | 15 | 13-7/8″ | 10-1/8″ | 2-3/4″ | 1″ | 8-3/8″ | 13-7/8″ | 1-1/2″ | 8-5/8″ | 15/32″ | 395.0 |
| 12U8V180 | U2 | 17.8 | 18.0 | 15 | 13-7/8″ | 10-1/8″ | 2-3/4″ | 1″ | 8-3/8″ | 13-7/8″ | 1-1/2″ | 8-5/8″ | 15/32″ | 408.0 |
| 12U8V190 | U2 | 18.8 | 19.0 | 15 | 13-7/8″ | 10-1/8″ | 2-3/4″ | 1″ | 8-3/8″ | 13-7/8″ | 1-1/2″ | 8-5/8″ | 15/32″ | 435.0 |
| 12U8V200 | U2 | 19.8 | 20.0 | 15 | 13-7/8″ | 10-1/8″ | 2-3/4″ | 1″ | 8-3/8″ | 13-7/8″ | 1-1/2″ | 8-5/8″ | 15/32″ | 428.0 |
| 12U8V212 | U2 | 21.0 | 21.2 | 15 | 13-7/8″ | 10-1/8″ | 2-3/4″ | 1″ | 8-3/8″ | 13-7/8″ | 1-1/2″ | 8-5/8″ | 15/32″ | 450.0 |
| 12U8V224 | U2 | 22.2 | 22.4 | 15 | 13-7/8″ | 10-1/8″ | 1-1/8″ | 2-5/8″ | 8-3/8″ | 13-7/8″ | 1-1/2″ | 8-5/8″ | 15/32″ | 421.0 |
| 12U8V300 | U2 | 29.8 | 30.0 | 15 | 13-7/8″ | 10-1/8″ | 3/8″ | 2-5/8″ | 8-3/8″ | 13-7/8″ | 1-1/2″ | 8-5/8″ | 15/32″ | 509.0 |
| 12W8V400 | W2 | 39.8 | 40.0 | 15 | 14-1/16″ | 11-1/4″ | 3/8″ | 2-1/4″ | 12-1/2″ | 13-7/8″ | 1-7/8″ | 9-3/8″ | 9/16″ | 764.0 |
| 12W8V480 | W2 | 47.8 | 48.0 | 15 | 14-1/16″ | 11-1/4″ | 3/8″ | 2-1/4″ | 12-1/2″ | 13-7/8″ | 1-7/8″ | 9-3/8″ | 9/16″ | 1000.0 |
| 12W8V530 | W2 | 52.8 | 53.0 | 15 | 14-1/16″ | 11-1/4″ | 3/8″ | 2-1/4″ | 12-1/2″ | 13-7/8″ | 1-7/8″ | 9-3/8″ | 9/16″ | 1160.0 |
| 12W8V580 | W2 | 57.8 | 58.0 | 15 | 14-1/16″ | 11-1/4″ | 3/8″ | 2-1/4″ | 12-1/2″ | 13-7/8″ | 1-7/8″ | 9-3/8″ | 9/16″ | 1330.0 |
| 12W8V640 | W2 | 63.8 | 64.0 | 15 | 14-1/16″ | 11-1/4″ | 3/8″ | 2-1/4″ | 12-1/2″ | 13-7/8″ | 1-7/8″ | 9-3/8″ | 9/16″ | 1460.0 |
8V Series Cast Iron Twelve-Groove Pulley Sheaves with Split Taper Bushings
8V series twelve-groove taper bushed sheaves are manufactured for 8V and 8V banded v-belts. They range from 12.5″ to 64.0″ in diameter. Depending on the sheave size, they are made to use U2 or W2 split-taper bushings, which we also stock. Most of our twelve-groove 8V split taper sheaves 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.
Twelve-Groove 8V Split Taper Sheave Size Chart
Related Matching 8V, 8V Banded Series V-Belt
(1) 8V-Series V-Belts
Classic 8V-Series V-Belts have a 0.63″ top-width, 0.53″ thickness, and a 38° angle. Additionally, 8V V-belts are 1 of the oldest styles of V-Belts in the industry. Because of their long-term success and economical operation, they are also 1 of the industry’s most widely used belt series. The premium 8V-series v-belts we supply are manufactured under ISO 9001 specifications, are oil and heat resistant, and directly interchange with other brands. They are constructed of a natural rubber compound with polyester cords and use cotton with a polyester blend cover for high durability.
(2) 8V-Series Banded V-Belts
8V-series v-belts are a part of the “classic” lineup of v-belts because they are 1 of the oldest style belts used and 1 of the most common. Our belts are manufactured by ARPM standards and offer superior strength, durability, and performance. 8V-series v-belts have a 1.0″ top-width per belt (band/ rib).
Related Split Taper Bushings
Split taper bushings are amongst the most common bushings utilized due to their high integral strength, simplicity of installation and uninstall, and high holding power for successfully coupling a shaft CZPT a drive or idler component. Split taper bushings are utilized in a broad range of sheaves, conveyor pulleys, and sprockets. Our high-quality split taper bushings are manufactured from high-grade steel or cast and interchange with any other brand, designed as a flanged bushing with a tapered barrel attached that contains 1 slit on each side. We stock split taper bushings ranging from the G-series to W2-series and in inch and metric bore sizes that range from 0.375″ up to 7.438″. For additional information or to get a quote on our high-strength split taper bushings, please contact our customer support team, and we will be happy to assist you.
3 Ways to Avoid Pulley Vibration
Pulleys are commonly used transmission components in industrial machinery and equipment. During the operation of the pulley, it is often accompanied by vibration and even makes a sound, affecting the machine’s life. If this vibration can be reduced, the device will become more durable.
Three ways to reduce or avoid pulley vibration:
1. Find a method from the source of production: we all know that the higher the concentricity of the pulley processing, the smoother the pulley rotation. Therefore, improving the machining accuracy can reduce the vibration amplitude when the pulley rotates. When the pulley leaves the factory, it must be checked for dynamic balance.
2. Find the method from the design of the pulley: To avoid vibration when the pulley rotates, the belt groove and the shaft hole of the pulley are now divided into 2 parts, and the middle is filled with shock-absorbing rubber, and the shock-absorbing rubber is used to achieve the effect of shock absorption. This method is more practical and straightforward.
3. Find the method from the installation process: when installing, check whether the engine and the pulley are firmly fixed, whether they are in a line, and whether the belt is adequately tight. These will have an impact on the operation of the pulley.
Inspection Knowledge of Pulley and Belt
First, check the 10sion of the pulley belt. At this time, you can use your thumb to press the strap between the 2 pulleys firmly. The pressing force is about 10kg. If the necessary amount of the belt is about 10mm, the belt 10sion is considered appropriate. If the reduction is too significant, it is believed that the pressure of the belt is insufficient. If the belt shows almost no reduction, it is considered that the belt 10sion is too high. When the stress is low, the v belt pulley and the belt are prone to slip.
When the 10sion is too large, it is easy to damage the bearings of various auxiliary machines. To this end, the relevant adjustment nut or bolt should be loosened to adjust the belt’s 10sion to an excellent state. The old belt is severely worn so that the contact area between the belt and the pulley is sharply reduced. At this time, as long as the belt is pressed hard, the pulley will sink deeply into the groove of the pulley. The rubber of the belt also has an aging problem. If the rubber of the belt is seriously aged, the new belt must be replaced in time.
Usage Scenario of V-Belt Pulleys and V-Belts
Technological Processing
Company Profile
HZPT is a professional manufacturer of mechanical parts. Our main products are timing pulleys, sprockets, split taper bushings, 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.
FAQ
Q1. Are you a manufacturer or a trading company?
A: We are a manufacturer and trading company.
Q2. What is your sample policy?
A: We can supply the sample if we have finished parts in stock, but customers need to pay for the sample cost and shipping fee.
Q3. Can you produce according to the samples?
A: We can produce power transmission parts according to your samples or technical drawings. We can build the molds and fixtures.
Q4. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery.
Q5. Can you customize pulleys?
A: Yes, please send us your drawing for an accurate quotation.
Q6. How long is your delivery time and shipment?
A: 1. Sample Lead-times: 10-20 days.
2. Production Lead-times: 30-45 days after the order is confirmed.
Q7. How do you make our business a long-term and good relationship?
A: 1. We keep good quality and competitive price to ensure our customers’ benefits ;
2. We respect every customer as our friend and sincerely do business and make friends with them, no matter where they come from.
Q8: What are your advantages?
1. The most competitive price and good quality.
2. Perfect technical engineers give you the best support.
3. OEM is available.
Additional information
Types of pulleys and their advantages and disadvantages
There are several types of pulleys. Learn the basic equations of the pulley system. Then learn about the different uses for pulleys. The disadvantages of using pulleys will be covered. Knowing these, you can buy the pulley that suits your needs. Here are some of the best pulley types and their pros and cons.
Basic equations of pulley systems
A pulley system is a mechanism that allows 2 blocks of a certain mass to be connected by a taut rope. The acceleration of each block is the same in magnitude and direction. The external force acting on each block is the weight of the block (10g) and the 10sion in the string. The 10sion between the 2 blocks is the total 10sion and the force acting on the pulley is the weight of the 2 blocks.
This simple mechanism uses 2 simple equations to explain how the system works. First, the mass of the weight on both sides of the pulley must be the same. When the weight is forced to move, the rope tightens and the second pulley descends. The weight is also attached to the second pulley and must be the same distance as the first pulley. This will result in a speed ratio of 2 times the distance covered by the first pulley.
Second, we have to calculate the force required to lift the object. The lower mass is supported by a wire configuration passing through all pulleys, while the uppermost pulley is used to apply the force. The lower block is used to support the weight. The applied force needs to travel a distance nx to move the weight. This distance, called MA, can be written as:
Once we have gathered the necessary information, we can apply the calculations to the pulley system. We can also use the Mechanical Advantage Calculator to calculate the force on the anchor. To do this, we must apply a force to the load as well as to the pulley itself. Using this equation, we can calculate the force required by the load to lift the load.
Types of pulleys
There are 3 basic types of pulleys: movable, fixed and compound. Both types of pulleys translate the force applied to them. The ideal mechanical advantage of pulleys is 2. This is because a single movable pulley only doubles the force, whereas a compound pulley doubles or triples the force. This type of pulley is often used with other types of pulleys.
Movable pulls move with the weight of the load, and the force pulling them increases on the lift side. They are often found in utility elevators and construction cranes. These systems are very simple, inexpensive and quiet to use. The force required to lift the object depends on the mechanical advantage of the system. The 2 most common types of pulleys are listed below. Let’s take a closer look at each 1.
V-shaped pulleys are used in vehicles and electric motors. These pulleys require a “V” belt to function properly. Some have multiple “V” grooves to avoid slipping. They are used in heavy duty applications to reduce the risk of power slip. These pulleys also have more than 1 “V” groove. V-belt pulleys are commonly used in vehicles and electric motors.
Composite pulleys are made from more than 1 type of cable or rope wrapped around the wheel. They can be fixed or hinged and are usually made of stainless steel or bronze. Composite pulleys have multiple layers and can be a single unit or many different components. There are 3 main types of pulleys: fixed pulleys and composite pulleys. These are the most common types. Almost every type of pulley is used for some type of application.
Fixed pulleys have 1 advantage over movable pulleys: they change direction as the weight of the load increases. They are typically used in heavy construction equipment. Gun tackles, patio tackles, and stationary tackles are examples of equipment that use a pulley mechanism. These devices are very common and can be found on most modern construction sites. They provide great convenience for lifting large loads.
application
What are the applications of pulleys? Simply put, a pulley is a mechanical device that transforms a difficult task into an easier 1. It consists of ropes and pulleys. It is usually used to lift objects. Usually, people wrap a rope around a pulley and pull up to lift the object. One disadvantage of using pulleys is that they require the same force as lifting the object directly.
One of the most popular applications of pulleys is lifting heavy objects. They help people pull up heavy objects and blocks. The system can also be used in seeders, lifts, grinders, etc. Other applications include raising flags, loading cargo, pulling curtains and rock or mountain climbing. Students can learn about the various uses of pulleys and the physics behind them.
Pulleys can be made of many different materials, depending on the application. Some are movable, which means they move with the object they are used to lift. This pulley system can be made of nylon, wire rope or fiber material. The best part about these systems is that they are easy to install and maintain. For a better grasp, use the guide or video tutorial to learn more about the pulley system and how it works.
Tapered pulleys are common in paper mills. They are high-quality pulleys that transmit power to connected parts. They can be dynamic or static and have different balances. Because pulley systems are highly customized, most industrial applications require systems designed specifically for specific applications. In this way, the system is safe, simple and inexpensive. The benefits of this design are endless.
The most common use of pulleys is for motor drives. They are used to minimize noise by applying force to the shaft to reduce the workload. They are also less expensive than gears and do not require lubrication. Furthermore, they can change the direction of the applied force. They are also less expensive than gears and are often used with other components. A screw is a cylindrical member with helical ribs used to connect something.
shortcoming
Although the pulley system makes it easier to move heavy objects, it still has some drawbacks. When using a pulley system, you must remember that the force required to lift the weight increases with the number of cycles. In addition, the distance between the puller and the heavy object increases, which may lead to accidents. Also, moving heavy objects can be tricky if the rope slips. Pulley systems are not very expensive and can be easily assembled. However, it does require a lot of space.
First, it is not efficient. Besides being inefficient, pulleys produce different forces at different speeds. Fixed pulleys use more force than the load, while movable pulleys move with the load. A movable pulley requires less force than a fixed pulley, but the combined system travels a long distance. Therefore, this method is not as efficient as the fixed method.
Pulleys are not only used in industrial processes. You can see them in various places in your daily life. For example, large construction cranes use pulleys to lift heavy loads. Even flagpoles, blinds, clotheslines, ziplines, motors and climbing equipment use pulleys. Still, despite their advantages, the disadvantages are not too serious.
Another disadvantage of the pulley is its wear and tear. While a pulley’s housing is theoretically infinite, its bearings and locking components typically wear out over time. To overcome this problem, a new bearing and locking assembly can be installed. No need to replace the housing and shaft, the entire assembly can be re-bonded and painted to replicate the original look. Alternatively, the pulley can be replaced with a new housing and shaft.
Using pulleys can also reduce the advantage of pulleys. On the other hand, interception and tackle is a system in which 2 pulleys are connected to each other using ropes. Unlike pulleys, pulley pulley systems can be adjusted in the direction of travel and can move heavy loads up to 4 times their force when used in hydraulic lifts.
