China Hot selling High Precision Customized Coal Mining Belt Conveyor Roller/Pulley for Mining with Free Design Custom

Product Description

High Precision Customized Coal Mining Belt Conveyor Roller/pulley for mining

Conveyor rollers(idlers) are important parts on Belt Conveyor, it endure over 70% resistance of 1 belt conveyor. The conveyor roller(idler) used for supporting conveyor belt and the material. There are kinds roller we supplied, like steel, nylon, ceramic or rubber. With years designing and manufacturing experience CZPT becomes a high quality roller(idler) server in conveyor spares industry.

It is common transportation equipment used in coal mines to connect downhole operations and on-ground production systems. In the course of use, it has many advantages, such as strong Transportation capacity, low power consumption, low work resistance, long service life, etc. Conveyor systems are quick and efficient transportation for a wide Variety of materials, which make them very popular in the material handling and packaging industries.

1.Conveyor range

Our conveyor roller can widely applied for mining, coal, metallurgy, electric power,  sea port, grain, chemical and almost any industry which have conveying system. And we can produce any kinds roller, such as iron roller, impact roller, rubber lagging roller, and disc roller.
What more, we have technical design team to design the new type products and best after-sale services.

Name: Conveyor rollers/idlers
Material: Normal material is iron, we can also do stanless steel, UHMWPE and so on
Size length and diameter can be customized
Bearing as customer requests
roller type carrier rollers, heavy duty roller, return roller,UHMWPE roller, centering roller, spiral roller and so on
Pipe thickness can be customized, 2.5mm, 2.75mm, 3mm, 3.25mm, 3.5mm, 3.75mm and so on
color produce base on your request


Technology Specification
D d



L b h f



D d



L b h f



89 20 4G204 200 14 6 14 2.79   133 25 4G205 380 18 8 17 7.84
250 2.98 465 9.24
315 3.58 600 11.48
465 5.24 700 13.44
600 6.48 1150 20.6
750 7.87 1400 24.61
950 9.72 4G305 380 8.21
25 4G205 8 18 17 11.21 465 9.62
108 20 4G204 315 14 6 14 4.46 530 10.7
465 6.07 600 11.86
950 11.27 700 13.51
25 4G205 315 18 8 17 5.07 800 15.17
380 5.86 1150 20.97
465 6.89 1400 24.99
600 8.53 1600 28.44
700 9.74 30 4G306 465 11.34
950 12.77 530 12.54
1150 13.99 800 17.48
1400 15.62 1400 26.75
4G305 380 6.23 1600 31.38
465 7.26 159 25 4G205 465 11.58
530 8.05 700 16.52
600 8.9 1400 31.09
700 10.11 4G305 465 12.02
800 11.32 530 13.84
950 13.14 700 16.95
1150 15.57 800 19.06
1400 18.47 1400 31.52
1600 21.02 1600 35.85
30 4G306 465 22 8.57 30 4G306 465 22 13.76
530 9.47 530 15.23
800 13.2 800 21.36
1400 21.49 1400 34.98
1600 24.26 1600 39.51

2.Brife introduction for CZPT Conveyor roller

1.Material: Steel,rubber
3.Daimeter: Ø50-Ø219
5.Seal: double labyrinth seal
5.Workign life:30000-50000hours
7.Color: mulit-color for choice


The pipe we choose is the high quality welding pipe,the roundness is                                   The shaft we choose is high-precsion rond cold steel,the roundness is
 lower 0.6mm,the straightnesss is 0.15%, the wall thickness tolerance                                 0.8, and the tolerance is only ±0.0065mm, make sure the bearing and 
is ±0.1mm, the thickness from 2.5~6.0mm, diaeter is from 50~219mm.                               shaft match closely, the bearing move safely.
0.8,±0.1mm, the thickness from 2.5~6.0mm, diaeter is from 50~219mm. 
The pipe is rust removal to increase paint adhesion.

Bearing housing is punched by the superipr steel sheet(SPHC),                      This bearing is the joint ventures, it is the roller special double 
After that, we will use the housing circle machine to cut the outside            seal, the bearing inner race have V-groove, grease is also the 
of the housing, to make sure the high Concentricity of the roller and           imported grease (Inject the grease into the both sides of the ball 
 the small runout.                                                                                                     bearing).

This seal is the national standard double labyrinth seal, 4 pieces                 We can print the brand for the customer requests, but need the 
pom and 3 pieces stell seal.Injected the high quality No.2 lithium                 customer give us the authorization.
grease. it is water proof and dustproof,anti-corrosion,wear-resisting,ect...

4.Technical quality team
4.Packing & Shipping
we can provide different kinds of packing for the customer.
Wooden box and wooden pallet packing for your choice.

6.Customer visiting and the exhibitions

6.After sale service
We provide the customer best after sale services, and we solve the problems any time.
7.Company introduction
 1.)HangZhou CZPT conveying Machinery Co.,Ltd was founded in 2005.    
 2.)It's registered capital is 11.68million CNY and It is private joint-stock enterprise. Our main products are  cnoveyor roller,idler,frame, pulley,belt and belt conveyor system for TD75 ,DTII,DTIIA,CEMA ects.
3.)we has large lathes, numerical control, double pressing machine, double welding machine, double boring  lathe, milling machine, sawing machine and so on. The products have gained various patents. We can produce more than 1 thousand rollers and 10 pulleys per day.
4.)We have the professionalQC dept. to keep the good quality before the  goods sent out.
    The products are sold to Middle East,Africa ,Australia,Europe,Southeast Asia,Russia and some other countries  and regions. We will Strengthen the inner management and improve our products' quality constantly.
   We will offer the best products for customers from the beginning to the end.



Q: What information do we need to provide to you in order to confirm our conveyor carrying rollers order?

   A: We work with technical drawings for any non-standard products. If the order is for standard parts, you only have to provide us with the part number so we may define the parts of the order.


Q: Do you have the products in stock?

   A: No. All rollers are produced according to your order.


Q: Can you produce the hose with my own brand?

   A: Yes, we have been offering OEM services to famous manufacturer for several years. Please send email to talk about details.


 Q: How does your factory do regarding to quality control?

   A: Quality is priority. ZheJiang Juming always attach great importance to quality control from beginning to the end of the production. Every batch rollers will be carefully inspected before it's packed for shipment.


Q: Can I order a sample?

   A: Of course. We can offer regular model roller sample for free, but the freight cost shall be borne by your side. If you want customized model sample, we'd like you to bear the charge for sample and freight.


Q: What's benefit will you bring?

   A: Your client satisfied on the quality.

        Your client continued orders.

        Your can get good reputation from your market and obtain more orders.


If you do not see the question you are having, please email us for further assistance.



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.

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.

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.

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 Hot selling High Precision Customized Coal Mining Belt Conveyor Roller/Pulley for Mining   with Free Design CustomChina Hot selling High Precision Customized Coal Mining Belt Conveyor Roller/Pulley for Mining   with Free Design Custom