Product Description

Product Description

Roller is an important component of belt conveyor.It has many kinds and large quantity,can support conveyor belt and material weight.

 

Product Specification
Model NO.	Steel roller
Diameter	89-159mm
Length	190-1500mm
Material	Carbon steel
Seal	Multiple labyrinth seal
Bearing type	Deep Grove ball bearing
Gurantee	12 months
Color	Customized
Certificate	ISO,CE
Advantages	waterproof,dustproof,smooth running,no noise,rotational resistance, axial float, shaft radial play

 

Features:

A) Bearing: deep groove ball and double sealing bearing 2RZ and 2Z with C3 clearance;

B) Sealing: multi-stage labyrinth seals achieve waterproof and dust proof 

C) Lubrication: Grease is Lithium soap type grease with Rust Inhibitors, grease is permanent lubricant.

D) Color: roller surface could be painted any color as per customer request.

E) Each roller would be through strict inspection and test to ensure every out coming roller is of true high quality;

Detailed Photos

1. Seal assembly
The seal assembly of idler is made of nylon, and the structural from is non-contact labyrinth seal structure.
The inner and outer seals from a labyrinth passage with high precision, and the passage is filled with long-acting lithium-based grease, so that the idler has good waterproof and dustproof performance.

2. Bearing
The bearing of Idler adopts special C3 clearance grade deep groove ball bearing.
Before assembly, the bearing of idler has been filled with lithium base grease and sealed permanently on both sides, which can realize lifetime maintenance free and extend the service life of the bearing.

3. Shaft
The shaft of idler adopts high precision cold drawn round steel after quenching and tempering treatment. Advanced Chamfer milling machine is used to perform accurate machining at both ends of the shaft, so as to ensure that the axial displacement of the idler is almost zero.

4. Bearing housing
The fabrication of the bearing housing consists of a multi-stage precision automatic pressing operation, which ensure high accuracy of bearing and sealing position.
The idler pipes and bearing housing at both ends are 3mm fully fillet welded at the same time trough CO2 gas shield double-gun automatic welding machine, which gives a minimum of 70% weld penetration,and ensures that the idler even under the high load and high speed operation, still strong and durable.

5. Shell
The shell of idler adopts special ratio-frequency welded pipe with small bending degree and small ellipticity.
The advanced steel tube chamfer cutting off tool machine is used for predsemachining of both ends of pipe, which can effectively guarantee the concentricity of idlers and minimize the rotation resistance of idlers
 

Product Parameters

Technology Specification
D	d	Bearing Model	L	b	h	f	Weight (kg)	D	d	Bearing Model	L	b	h	f	Weight (kg)
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

  Quality design and build

  Our focus on quality starts with sourcing only the best raw materials, rejecting anything that falls outside our strict tolerances.During manufacture your order is checked at each stage before passing through to the next process. This also contributes to our ability to meet orders on time.
 

Packaging & Shipping

Company Profile

 

FAQ

 

Q: Are you a factory or trading company?

A: We are a factory and have export license. Besides, our factory has a number of product lines to provide products with stable production capacity for customers in delivery time.

 

Q: What information shall I provide in order to confirm the 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: How does your factory do regarding to quality control?
A: Quality is priority. We 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: Do you have the products in stock?
A: No. All rollers are produced according to your order.

 

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:Hong long is your delivery time?
A:Normally 7-30 days ,it depends on your quantity.For Decent order , we have flexible adjustment to ensure the delivery time.

If you do not see the question you are looking for, please contact us for further assistance.

Contact Person: Lisa Lee
 
 

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 tension in the string. The tension between the 2 blocks is the total tension 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 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 2 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 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 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.

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.