Product Description

Head Drive Pulley, Return Pulley,Bend Pulley, Snub Pulley,Tensioning Pulley, Take up Pulley can be provided. We are designing and manufacturing pulleys, using materials of the highest quality in a production process employing advanced technology. This together with the application of the Quality Assurance system certifi ed to ISO 9001:2015, contributes to the production of high quality products offering dependable, long life performance in the field and appreciably reducing maintenance cost. Each our conveyor pulley is individually computer designed to meet the client’s requirements.

Product Name

Belt Conveyor Pulley Drum

Type

Drive Pulley, Bend Pulley,Snub Pulley,Take Up Pulley

Length

200mm-2500mm

Materials

Carbon steel, Stainless steel, Rubber

Surface Treatment

Smooth, CZPT grooved lagging, Herringbone lagging, Ceramic lagging

Welding

Submerged Arc Welding

Bearing

Famous brands

Structure

Tube,shaft,self-aligning bearing,bearing seat/house,hub, locking bushing,end disc

Drive Pulley Introduction:

1. Head/Drive Pulley is located at the discharge terminus of the conveyor. 
2. Drive pulley provides the driving force for the conveyor. In order to increase pulley life and traction, it often has a larger diameter than other pulleys.
3. We can supply pulleys with hot vulcanized rubber lagging, plain or grooved, as required by client. Different patterns of grooving such as herringbone or CZPT can be provided to increase tractive friction under dirty or wet conditions. CZPT grooves have the advantage of being installed in any orientation, regardless of belt direction.

Specification of Drive Head Pulley Drum

Belt Width 500-2800mm (19-110 inch)
Pulley Length 500-3500mm (19-138 inch)
Diameter 200-1800mm (8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, JIS, AS/NS, etc.
Working Life More than 30,000 hours.
Surface Flat Rubber Lagged, Ceramic Lagged, CZPT Rubber Lagged, etc.
Main Material Carbon Steel
Length of conveyor drive pulley depends on the width of conveyor Belt. You can get drive pulleys with hot & cold vulcanized rubber lagging, plain or grooved, as required by client.

Bend Pulley Introduction:

1. The bend pulley  is used for changing the direction of the belt.
2. The bend pulley is usually installed at the tail part or the vertical take-up equipment part when the belt direction need to 180°bending. It will be installed above the take-up equipment part while 90°bending.
3. The pulley, which is used for extending the contact surface, is usually used for below or equal to 45 degree bending.
4. The surface treatment of the bend pulley can be smooth steel and flat rubber lagging. 

Specification of Bend Pulley:

Belt Width 500-2800mm(19-110 inch)
Pulley Length 500-3200mm(19-126 inch)
Diameter 200-1800mm(8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, etc.
Working Life More than 30,000 hours.
Surface Flat Rubber Lagged, Ceramic Lagged, CZPT Rubber Lagged, etc.
Main Material Carbon Steel
Length of conveyor bend pulley depends on the width of conveyor Belt. You can get drive pulleys with hot vulcanized rubber lagging, plain or grooved, as required by client.

Snub Pulley
Snub pulley is used to achieve higher angle of wrap on the drive pulley thereby increasing the traction. It also reduces the belt tension maximizing the life of the conveyor component.It is mounted close to the drive pulley on the return side of the belt.

Specification of Snub Pulley:

Items Content
Belt Width 500-2800mm (19-110 inch)
Pulley Length 500-3200mm (19-126 inch)
Diameter 200-1800mm (8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, etc.
Working Life More than 30,000 hours.
Surface Flat Rubber Lagged, Ceramic Lagged, CZPT Rubber Lagged, etc.
Main Material Carbon Steel
Length of conveyor Snubpulley depends on the width of conveyor Belt. You can get Snubpulleys with hot vulcanized rubber lagging, plain or grooved, as required by client.

Take Up Pulley 
The take up pulley will ensure adequate tension of the belt leaving the drive pulley so as to avoid any slippage of the belt, ensure proper belt tension at the loading and other points along the conveyor, compensate for changes in belt length due to elongation, and provide extra length of belt when necessary for splicing purpose.

Specification of take up pulley drum:

Belt Width 500-2800mm(19-110 inch)
Pulley Length 500-3200mm(19-126 inch)
Diameter 200-1800mm(8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, etc.
Working Life More than 30,000 hours.
Surface Flat Rubber Lagged, Ceramic Lagged, CZPT Rubber Lagged, etc.
Main Material Carbon Steel

The components of a pulley drum include the following:

Drum or Shell The drum is the portion of the pulley in direct contact with the belt. The shell is fabricated from either a rolled sheet of steel or from hollow steel tubing.The shell has a specific ‘face’ width and diameter which is determined by the width of the belting and the type and rating of the belt to be used on the conveyor.
Diaphragm Plates The diaphragm or end plates of a pulley are circular discs which are fabricated from thick steel plate and which are welded into the shell at each end, to strengthen the drum.The end plates are bored in their centre to accommodate the pulley shaft and the hubs for the pulley locking elements.
Shaft The shaft is designed to accommodate all the applied forces from the belt and / or the drive unit, with minimum deflection.The shaft is located and locked to the hubs of the end discs by means of a locking elements.
The shaft is supported on both ends by bearings which are housed in plummer blocks, to support the shaft and pulley assembly on the conveyor structure.
Shafts often comprise different diameters along their length due to the bending moments and resultant deflection limitations. The diameter of the shaft at the landings for the bearings may be smaller to satisfy the necessary bearing diameter which is more cost-effective (smaller).
Similarly in the case of a drive shaft, the drive attachment, may be different to the other diameters along the shaft and hence pulley shafts are often stepped.
Locking Elements These are high-precision manufactured items which are fitted over the shaft and into the pulley hubs. The locking elements attach the pulley firmly to the shaft via the end plates.Locking elements work on the friction-grip principle whereby the element is CZPT to be fastened to the shaft and hub simultaneously and concentrically, by tightening a series of screws around the locking element.
Hubs The hubs are fabricated and machined housings which are welded into the end plates. The hubs are sized according to the size of the pulley, the diameter of the shaft and the size of the locking element which is required for the specific duty.
Lagging It is sometimes necessary or desirable to improve the friction between the conveyor belt and the pulley in order to improve the torque that can be transmitted through a drive pulley.Improved traction over a pulley also assists with the training of the belt.
In such cases pulley drum surfaces are ‘lagged’ or covered in a rubberized material. This cover is usually 8 mm to 12 mm thick and can be plain or have a grooved pattern. The rubber lagging is vulcanized to the pulley shell to ensure that it remains attached under adverse operating conditions.
Bearing Assemblies Bearings support the rotating shaft and hence the pulley. The bearings are housed in ‘plummer blocks’ which enable the mass of the pulley assembly plus the belt tension forces to be transmitted to the pulley supporting structure.Plummer blocks are often bolted to ‘sole plates’ which are welded to the structure.
The sole plates incorporate jacking screws to enable the pulley to be correctly and relatively easily aligned.

Several types of bearing housing, seals and end disc:

Pulley Drum Warehouse and package:

Pulley Drums:

Our Products: Belt Conveyors, Pulley Drum, Conveyor Rollers Idler,  etc.

The Mechanical Advantage of a Pulley

A pulley is an important tool for many tasks. The advantage that it offers over a hand-held mechanism is its mechanical advantage. In this article, we’ll discuss the types of pulleys and their applications. We’ll also look at the types of compound pulleys. And, of course, there’s a little bit about the mechanical advantage of a pulley. This article will help you decide whether this tool is right for your needs.
pulley

Mechanical advantage of a pulley

A pulley has a mechanical advantage over a lever because it is able to produce more force over longer distances. The mechanical advantage of a pulley sounds brilliant and could produce energy. But what exactly is this mechanical advantage? Let’s take a look. First, consider how a pulley works. A rope supports a 100kg mass, which requires 500 newtons of force to lift. If the rope supports a 100kg mass, 2 sections of rope can support that load. Using a pulley, you can lift the same weight with half the force.
A pulley’s ideal mechanical advantage is the ratio of the force applied to the total length of the rope. The larger the radius, the greater the mechanical advantage. A pulley made up of 4 rope segments has an ideal mechanical advantage of four. Therefore, a four-segment pulley would multiply the force applied by four. As the numbers on the rope segments are smaller than the total length of the rope, it would be better to use a compound pulley.
The mechanical advantage of a pulley can be calculated by using the T-method. The first step in calculating the mechanical advantage of a pulley is defining the force you need to lift. Then, divide that force by 2 to calculate the amount of force you need to lift the load. Once you know this amount, you can design a pulley to meet your needs. That way, you can achieve the perfect balance between the 2 types of pulleys.

Types of pulleys

The main function of the pulley is to change the direction of the force. The mechanical advantages of a single pulley are two. Ideally, 2 pulleys should have 2 or more mechanical advantages. The mechanical advantage of compound pulleys can be increased to 2 or more. The number of pulleys that make up the composite pulley will determine the mechanical advantage. Certain types of pulleys are combined in 1 housing.
A stepped pulley is a set of pulleys with stepped surfaces. Each face is anchored to the mid-axis in an ordered sequence. This design gives these pulleys their name. They are used to increase and decrease the speed of the driven pulley. Step pulleys are usually used in pairs. They can be straight or stepped, but usually come in pairs.
The 3 main types of pulleys are pulleys, rope pulleys, and chain pulleys. Pulley Pulley systems use mechanics to lift and lower heavy objects. The Greek historian Plutarch credits the invention of the pulley to Archimedes of ancient Sicily. The Mesopotamians used rope pulleys to lift water around 1500 BC, and Stonehenge is said to have been built using a rope pulley system.
pulley

Application of pulley system

The advantages of using a pulley system are numerous. The ability to lift heavy objects is a good example. The pulley system makes it easy for people to lift blocks and other large objects. It can be used in many different applications, from utility elevators to construction cranes. In addition, it is widely used on sailing boats. If you want to learn more about the benefits of a pulley system, keep reading!
You can use the pulley system to water flowers or water plants. Some of them even lowered the pot to make cleaning easier. Pendant lights are another great place to install a pulley system. Climbing and fishing are just some of the activities that utilize the pulley. They are great for fishing and gardening. And since they are so versatile, you can use the pulley system anywhere.
To get the most out of your pulley system, you must choose a product that has all of the above attributes. A high-quality pulley must have a large pulley diameter and be made of sturdy materials. The cables must also be properly supported in the pulleys to ensure a long service life for your investment. A good cable should have minimal cracks and be lubricated. These factors are the most important considerations when choosing a pulley system for your needs.

composite pulley

Composite pulley systems combine 2 or more movable pulleys. These systems maximize the force to move the weight and can also change direction so they can be used to lift weights. Composite pulley systems can be as simple or as complex as your needs. For example, a pulley pulley system uses multiple pulleys on each axis. This method is often used for hoisting building materials.
A compound pulley system has 2 or more rope segments, each of which is pulled up on a load. It can increase lift by making objects move faster. These systems are common on large sailboats and construction sites. Composite pulleys are also available for larger boats. Due to their versatility, they are versatile tools for construction sites and large sailboats. If you have their app, you should consider buying one.
The main advantage of composite pulleys is their versatility. You can use them to lift weights or use them to save energy. Composite pulleys are especially useful for lifting heavy objects. For example, you can tie a paper clip to the end of the rope and pull it up. The flag is then lifted into the air with the help of compound pulleys. Composite pulleys are a great invention and they are often used in construction.

security considerations

There are several safety considerations to consider when using pulleys. The first is Secure Workload (SWL). This value is a general guideline for the maximum weight a pulley can safely handle. It varies according to the height and angle of the pulley. Besides SWL, there are some other factors to consider. Consider each 1 before deciding on the pulley that best suits your needs.
Another safety consideration is the weight of the load. Since the highs of the pulley are higher than the lows, it doubles in weight. The weight of the high point should not exceed 4 kN. The safety factor is calculated by multiplying the strength of the pulley by the weight of the load. Secondary COD has a safety factor of 10:1 and bulletproof primary anchors should be used with pulleys.
If using a chain hoist, you must be trained in the appropriate type of lifting. It is important not to hang on the top hooks of the structure, nor to overload or rig the hooks with multiple slings. You should also avoid corroded or damaged chains, as they can cause the crane to jam or overload. A worn chain can even cause the load to drop.
pulley

Components of a pulley system

Proper design of the pulley system can increase the life of the cables and pulleys. Larger diameter cables should be selected as they are more durable than smaller diameter cables. The cables should also be supported in the pulley grooves. The pulley must be designed to be compatible with the cable and its lubrication should be optimal. Proper lubrication of cables and pulleys will ensure maximum durability and longevity.
The first type of pulley is called a fast pulley. These pulleys are used for quick start and stop of the machine. These pulleys are usually mounted in pairs on the countershaft of the machine. One pulley is tightly mounted on the machine shaft, while the other pulley is fitted with a free-spinning mechanism. When the machine is running, the belt is mounted on the tensioner pulley, and when it is stopped, the belt slides on the independent pulley.
Composite pulley sets reduce the overall effort required by reducing the size of the pulley. These are usually attributed to Archimedes. Flat pulleys are often used in flat belt driven transmission systems. These are used in high-speed, low-power applications. Flat pulley idlers are also used on the back of traditional V-belts.

China Professional Cema DIN Rubber Lagging Bend Pulley for Conveyor   near me manufacturer China Professional Cema DIN Rubber Lagging Bend Pulley for Conveyor   near me manufacturer

Conveyor Pulley

As one of the conveyor pulley manufacturers, suppliers, and exporters of mechanical products, We offer conveyor pulley and many other products.

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