Tag Archives: sheaves

China Good quality American Standard 12D Series Cast Iron Qd Bushing Sheaves Pulley for D Belts alternator pulley

Product Description

American Standard 12D Series Cast Iron QD Bushing Sheaves Pulley For D Belts

12D series 12 groove QD bushing pulley, applicable to D series classic v belt and D belt; They range in diameter from 12.64 inches to 58.64 inches. Depending on the pulley size, they use M, N, or P QD (quick disassembly) bushings, which we also have in stock. Most of our 12D QD pulleys are made of high-strength grade 35 cast iron, phosphate coated, and painted to prevent corrosion. All these are balanced at the factory to ensure the smooth operation of the machine.

12D QD Sheave Size Chart 

Size

Bushing Type

Type

Pitch Diameter

Outside Diameter

(E)

(F)

(L)

(M)

Sheave Weight (LBS)

12D120M

M

A

12.0″

12.64″

3-11/32″

17-9/16″

6-3/4″

7-15/32″

220

12D130M

M

A

13.0″

13.64″

3-11/32″

17-9/16″

6-3/4″

7-15/32″

250

12D135M

M

A

13.5″

14.14″

3-11/32″

17-9/16″

6-3/4″

7-15/32″

270

12D140M

M

A

14.0″

14.64″

3-11/32″

17-9/16″

6-3/4″

7-15/32″

280

12D145M

M

A

14.5″

15.14″

3-11/32″

17-9/16″

6-3/4″

7-15/32″

300

12D150M

M

A

15.0″

15.64″

3-11/32″

17-9/16″

6-3/4″

7-15/32″

305

12D155M

M

A

15.5″

16.14″

3-11/32″

17-9/16″

6-3/4″

7-15/32″

310

12D160M

M

A

16.0″

16.64″

3-11/32″

17-9/16″

6-3/4″

7-15/32″

320

12D180M

M

A

18.0″

18.64″

3-11/32″

17-9/16″

6-3/4″

7-15/32″

340

12D200M

M

A

20.0″

20.64″

3-11/32″

17-9/16″

6-3/4″

7-15/32″

360

12D220M

M

A

22.0″

22.64″

3-11/32″

17-9/16″

6-3/4″

8-15/32″

400

12D270N

N

A

27.0″

27.64″

2-3/16″

17-9/16″

8-1/8″

7-1/4″

520

12D330N

N

A

33.0″

33.64″

2-5/16″

17-9/16″

8-1/8″

7-1/4″

665

12D400P

P

A

40.0″

40.64″

1/4″

17-9/16″

9-3/8″

7-15/16″

870

12D480P

P

A

48.0″

48.64″

1/4″

17-9/16″

9-3/8″

7-15/16″

1090

12D580P

P

A

58.0″

58.64″

1/4″

17-9/16″

9-3/8″

7-15/16″

1300

Relevant supporting D-series and D-series V-belt

(1) D-series V-belt
Classic D-Series V-belts have a top width of 1.25 inches, a thickness of 0.75 inches, and an angle of 40 °. In addition, the D V belt is 1 of the oldest V-belt types 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 high-quality D-series v-belts we provide are manufactured according to the ISO 9001 specification, with oil and heat resistance, and can be directly interchanged with other brands. They are composed of natural rubber compound and polyester rope, covered with a mixture of cotton and polyester, and have high durability.
(2) D series ribbon V-belt
D series v-belts are part of the “classic” v-belt series because they are 1 of the oldest and most common styles. Our belts are manufactured according to ARPM standards and have excellent strength, durability, and performance. The top width of each belt (belt/rib) of the D series v-belt is 1-1/4 “.
Relevant QD sleeve | quick disconnect sleeve
QD bushings are used for various sprockets, pulleys, and synchronous drives in industrial power transmission and agricultural industries. They are designed for easy installation and unloading; They are also referred to as quick disconnect bushings. The QD sleeve facilitates standard installation outside the flange and reverse installation on the inside and utilizes a single split that extends to the entire sleeve length. Our QD bushing can be interchanged with other brands and is made of high-grade steel by precision machining, which is suitable for perfect installation. The advantages of QD casing compared with different types of casing include: Easy of installation/unloading, firm grip, and high strength. We stock all standard-size QD sleeves and provide customized QD sleeves as required.
Related QD Bushings | Quick Disconnect Bushings
QD bushings are widely used in industrial power transmission and agricultural markets for multi-sprocket, pulley, pulley, and synchronous transmission. They can be used for quick setup and simple uninstallation; They are also referred to as quick disconnect bushings. QD bushings can be routinely installed by all flange outboard and reverse mounting, regardless of the flange position on the inboard side, and use a single opening that extends over the entire bushing length. Our QD bushings are interchangeable with other brands and are made of high-grade steel and precision machined for optimum applications. The positive aspects of QD casing relative to its unique style include: It is easy to install/uninstall and has high retention energy and strength. We stock all standard sizes of QD bushings and provide custom QD bushings and stainless steel on request. QD casing is the most widely used in the world; These days, please contact our customer service personnel for any quotation or other information about high-quality QD casing.

The correct installation procedure for pulley and conical sleeve
1. Remove the residual oil, paint, and pollutants on the shaft, the inner hole of the tapered sleeve, the outer surface of the tapered sleeve, and the surface of the tapered hole of the belt pulley, and remove the surface burrs. NOTE: The use of lubricants can cause the pulley to crack. Do not use any lubricant during installation.
2. Place the tapered sleeve in the tapered hole of the pulley and align each hole (each complete hole is only half of the thread).
3. Add a little oil to the thread of the mounting screw, and then screw it into the half-threaded hole of the pulley. NOTE: Do not lubricate the tapered surface of the tapered sleeve, the tapered surface of the hub, the bore of the tapered sleeve, and the shaft. The use of lubricant may cause the pulley to break.
4. Install the key in the keyway of the shaft, install the tapered sleeve of the pulley on the shaft, and position it so that the pulley can move slightly axially when locked. Note: when installing the v-shaped belt pulley on the vertical shaft, precautions should be taken to prevent the pulley or cone from falling off.
5. Tighten the mounting screws alternately until the tapered surface of the pulley and the tapered sleeve are assembled. NOTE: Do not use a worn hex wrench, as it may cause loose components or damaged mounting screws.
6. Check the runout (swing) of the centering pulley; Correct it if necessary.
7. Continue to tighten the mounting screws alternately to the recommended tightening torque of the mounting screws. After CZPT the recommended tightening torque of the mounting screws, do not apply additional force.
8. To increase the clamping force of the taper sleeve, moderately knock the end face of the taper sleeve with a hammer through the sizing block or sleeve. Note: Do not directly hit the conical sleeve with a hammer.
9. Tighten the taper sleeve mounting screws again after tapping.
10. Recheck the torque after the first test run and regularly check it later. If loose, repeat steps 5-9.
Common application of QD pulley
*Machine tool
*Crusher, pulverizer, crusher, grader, vibrating screen
*Material conveying system
*Fans, blowers, and exhausters
*Pumps and compressors
*Woodworking saw, milling machine, planer, lathe

Company Information

 

 

Type: Agricultural
Usage: Agricultural Products Processing, Farmland Infrastructure, Tillage, Harvester, Planting and Fertilization, Grain Threshing, Cleaning and Drying
Material: Iron
Power Source: Electricity
Weight: 6kg
After-sales Service: Installation Guide 3-Year Warranty

pulley

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 two 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 tension in the string. The tension between the two blocks is the total tension and the force acting on the pulley is the weight of the two blocks.
This simple mechanism uses two 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.
pulley

Types of pulleys

There are three 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 two. 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 two most common types of pulleys are listed below. Let’s take a closer look at each one.
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 one “V” groove. V-belt pulleys are commonly used in vehicles and electric motors.
Composite pulleys are made from more than one 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 three 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 one 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 one. 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.
pulley

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 two 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 four times their force when used in hydraulic lifts.

China Good quality American Standard 12D Series Cast Iron Qd Bushing Sheaves Pulley for D Belts   alternator pulley	China Good quality American Standard 12D Series Cast Iron Qd Bushing Sheaves Pulley for D Belts   alternator pulley
editor by CX