ZheJiang Machinery & Equipment Import & Export Corp.(HBMEC), founded in 1978, is a combination of industry and trade, technology and trade of the state-owned professional foreign trade company. After more than 40 years of reform and development, our company has made remarkable achievements in its import and export business, and has established trade relations with more than 100 countries and regions.
Our products and Services as following, including:
—–Various kinds of machinery and parts, especially raw castings and finished machined parts, fabrications. The filed covers: Fittings and couplings. Auto parts, Trailer parts, Agricultural machinery parts, Railway parts, Crusher parts, Pump parts, Valve parts,etc.
—- Steel/Stainless steel fabricated parts, rubber gaskets and plastic parts. The process covers: Laser cutting, Punching, Stamping,Welding, etc For construction, industrial supply etc.
—Other products processed according to your drawings and samples, .
We provide following services:
—-Buying & Sourcing Agent, mainly in Machinery & Equipments & Spare parts filed.
—-Import & Export Agent service.
We know OEM and customer requirements well. We are Professional OEM spare parts provider for industrial supply, can be used in the food machinery industry, packaging machinery industry.
We have a professional team, including engineers and mechanical engineering, responsible for supervising production and quality control. Being an ISO9001 certified company, with our quality control system, you can get high quality products with fairly low costs.
Welcome to contact us freely!
– PRODUCT DETAILS –
|Product name||Film Reel Drive Pulley, Pulley, Timing Pulley, Carbon Steel Pulley, Sintered Steel Pulley|
|Material||Carbon Steel, Sintered Steel|
|Production Capacity||3000PCS /Month|
|Application||Our products are widely used in mechanical components parts for Industrial|
|Specification||According to customer’s drawing or sample.|
|Services||OEM, design, customized|
|Tolerance||According to Drawing|
|Surface treatment||– Passivation
– Sand blasting
– Electroplating(color, blue, white, black zinc, Ni, Cr, tin, copper, silver)
– Hot-dip galvanizing
– Black oxide coating
– Heat-disposing(Normalizing, Annealing, Quenching, Tempering, etc.)
– Rust preventive oil
|Package||Plastic, Carton, Wooden Box|
|Samples||We can make sample.|
|Certificate||ISO9001: 2008 quality management system certificate|
|Payment Terms||Bank Transfer|
|Delivery time||Subject to negotiation date|
– HONOR & QUALIFICATION –
Since 2000, we have been maintaining certification, standardizing the company’s business activities in accordance with the requirements of quality management system standards, and taking increasing customer satisfaction as our business purpose.
– FACTORY –
– PACKAGE & SHIPPING –
Each piece put in on carton box, wood case, Plastics Packaging, pallet, etc.
Mode of shipping:
Shipping by air, sea or car.
By sea for batch goods;
Customs specifying freight forwarders or negotiable shipping methods.
– OUR SERVICES –
1. Could make product for customer according to customer samples or drawings.
2. Can deal with various drawings soft wares: PRO/E, Auto CAD, Slid Work, UG, etc.
3. Could offer samples for free if the sample is simple and low value.
4. Submit samples with official inspection reports including material report,mechanical property report and dimensional report.
5. Can provide the third party inspection report.
6. Could provide at least 1 year quality guarantee after customer receives the products.
7. We could supply storage service for customer if required.
– FAQ –
Q1. How can we quote for you?
Please send us enquiry by email, with all the technical drawings you have. Such as material grade, tolerance, machining demands, surface treatment, heat treatment, mechanical property requirements, etc. Our specialized engineer will check and quote for you, we would appreciate the opportunity and will respond in 3-5 working days or less.
Q2. How can I get a sample to check your quality?
After price confirmed, you can requiry for samples to check quality.
If you need the samples, we will charge for the sample cost.
But the sample cost can be refundable when your quantity of first order is above the MOQ.
Q3. Can you do OEM for us?
Yes, the product packing can be designed as you want.
Please feel free to contact us if you have any question.
|Application:||Fastener, Auto and Motorcycle Accessory, Hardware Tool, Machinery Accessory|
|Standard:||GB, China GB Code|
|Production Type:||Batch Production|
|Machining Method:||CNC Machining|
|Material:||Steel, Sintered Steel|
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, two 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 four 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 two 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 two 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, two pulleys should have two or more mechanical advantages. The mechanical advantage of compound pulleys can be increased to two or more. The number of pulleys that make up the composite pulley will determine the mechanical advantage. Certain types of pulleys are combined in one 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 three 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 systems combine two 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 two 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.
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 one 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.
editor by CX