Product Description
Product Parameters
HangZhou Runkey Precision Technology Co.Ltd .,
We are an industry and trade integration company integrating automation equipment parts, electronic equipment, precision machinery parts, modules and rapid manufacturing. we will always provide you with professional /reliable/high quality quotation and products with perfect services in time.
With rich experience of manufacturing, we aim to develop long term relationships with each and every 1 of our customers by delivering quality workmanship, on time and at a competitive cost. Through making customer satisfaction our top priority, we have been CZPT to go from strength to strength.
Our friendly, efficient and professional service and the ability to meet tight delivery deadlines have helped us to build a large customer base, and enabled us to attract business from a wide area.
As a mechanism for transmitting the rotating power generated by the motor, synchronous belt pulley, synchronous belt idler and synchronous belt are usually widely used for design.
Through the engagement between the synchronous belt pulley, the synchronous belt idler and the synchronous belt teeth, the function of transmission and transmission is realized.
| Business Type | Manufacturer,Trader | |
| Our services | ODM/OEM :CNC Machining ,sheet metal ,lathe,wire cutting,injection,vac forming,surface treatment,laser cutting,drilling, grinding, bending, stamping, welding,assembling,extrusion and so on. | |
| Materials(including material cert) | Aluminum:2571/5052/6061-T6/6063/6082/7075… Stainless Steel: 17-4PH/304/303/316/420/410/440C… Steel 1214L/1215/1045/4140/SCM440/40CrMo/… Titanium: TC4/Gr2/Gr5… Brass 3602 / 2604 / H59 / H62 /932 Bearing Bronze …Bronze/Aluminum Bronze Plastic:PEEK/Nylon 66 /ABS/Delrin 150/ POLYCARBONATE/ASTM D6100 Acetal/POM/Rulon/PC… |
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| Finish | polishing/Deburring/ brush/ sand blasting, Normal anodize/harden anodize, black oxide, plating(Chrome/Nickel/zinc/gold/silver…)… | |
| Tolerance | +/-0.005mm,ISO2768 standard class F , Accuracy Of Machining:0.01mm Accuracy Of Grinding:+ or -0.005mm Surface Roughness:Ra0.2(polishing) ,Ra0.4(lathe-turning),Ra0.8(CNC) Parallelism/Verticality/Concentricity:0.02mm(deponds on actual structure /material..) |
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| Lead Time | 3-7 days for rapid samples,3-4 weeks for mass production | |
| Drawing Accepted | Solid Works,Pro/Engineer, AutoCAD(DXF,DWG), PDF,TIF , IGS , STP… | |
| Inspection | FAI/100% Inspection/As per customer requirement | |
| MOQ | 1 PCs/small/large batches.Depending on detailed orders . | |
| Packing methods | 1. Standard package 2. Pallet or container 3. As per customized specifications |
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| Payment | 30% T/T deposit with PO, balance 70% T/T before shipment for first cooperation | |
| Our Advantages |
1. Reliable Quality 2. Competitive Price 3. High precision, high quality, tight tolerance with 15+ years experience 4. Continuous Improvement 5. On-Time Delivery 6. Customer Satisfaction Questionnaire 7. After-Sales Service |
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| Certificate | ISO9001:2015 | |
| Transportation | Air(DedEx/UPS/DHL ..)/Sea ,or customer demands |
| Designation | Working Range | Machining Accuracy |
| Turning | Max: Ø 460X1000mm Min: Ø 0.5X10mm |
OD Tolerance: ± 0.01(OD: Ø ≤50mm,Length: L≤100mm) |
| Hole Tolerance: ± 0.02(Aperture: Ø ≤50mm,Length: L≤50mm) | ||
| Roundness & Concentricity: 0.01~0.02( 3≤ Ø ≤50mm,L≤75mm) | ||
| Surface Roughness: Ra1.6~Ra3.2 | ||
| CNC Machining | (Maximum Machining Range):1200×2400×700mm (Maximum Machining Weight): 1500kg |
Hole Tolerance: ≤± 0.008 (Aperture: Ø 3~Ø 50mm) |
| Hole Roundness/Cylindricity: 0.008~0.02 (Aperture: Ø 3~Ø 50mm) | ||
| Hole Pitch/Edge Distance: ≤± 0.01 (Center Distance≤75mm) | ||
| Perpendicularity of Hole Axis: 0.008~0.02 (Hole Depth≤15mm) | ||
| Perpendicularity of Hole Axis: 0.008~0.02 (Hole Depth≤15mm) | ||
| Surface Roughness: Ra0.8~Ra1.6 | ||
| Circular Grinding |
OD: Max Ø 200X750mm ID: Min Ø 5X10mm |
OD Tolerance: ≤ ± 0.01 (OD: Ø ≤50,L≤100) |
| ID Tolerance: ≤ ± 0.01 (Aperture: Ø ≤10,L≤25) | ||
| Roundness & Concentricity: 0.02 (3≤ Ø ≤50,L≤75) | ||
| Surface Roughness: Ra0.8~Ra1.6 |
Our Advantages
Quality Control
1) Checking the raw material after they reach our factory——- Incoming quality control ( IQC)
2) Checking the details before the production line operated
3) Have full inspection and routing inspection during mass production—In process quality control(IPQC)
4) Checking the goods after they are finished—- Final quality control(FQC)
5) Checking the goods after they are finished—–Outgoing quality control(OQC)
Why Choose Us
1) Design assistance and full engineering support .
2) Professional at OEM CNC parts .
3) Complete production lines for custom turning, milling, CNC machining sheet metal fabrication, stamping, bending, argon welding
and surface treatment.
4) Advanced machine tools, CAD/CAM programming software.
5) Prototype machining capabilities.
6) Strict quality control standards with a highly qualified inspection department .
7) Continually upgrading and advancing our equipment to remain competitive .
8) Small quality is also available.
FAQ
Q: What do I need for offering a quote ?
A: Please offer us 2D or 3D drawings (with material, dimension, tolerance, surface treatment and other technical requirement etc.),quantity, application or samples.
Q: What is your MOQ?
A: MOQ depends on our client’s needs, besides,we welcome trial order before mass-production.
Q: What is the production cycle?
A: It varies a lot depending on product dimension,technical requirements and quantity. We always try to meet customers’
requirement by adjusting our workshop schedule.
Q: What kind of payment terms do you accept?
A.: T/T, L/C, Escrow, paypal, western union, moneygram etc.
Q: Is it possible to know how is myproduct going on without visiting your company?
A: We will offer a detailed products schedule and send weekly reports with digital pictures and videos which show the machining progress.
Types of Pulley Systems
If you’ve ever tried to lift a pail of water, you’ve probably seen the pulley system in action. Pulleys are extremely useful tools for everything from household appliances to heavy industrial machinery. Different kinds of pulley systems are classified according to their amount of motion. Some types have fixed axes, while others have movable axes. Some common uses of pulleys are listed below.
two-wheel pulley
Pulleys are complex structures with thin-walled and thick-walled sections. Therefore, they require specific forging designs. The tool concept for the production of pulleys is shown in Figure 11.6. Using the generated tool, the pulley can be forged into different shapes. Process parameters must be optimized based on material, surface quality and metallographic analysis.
Pulleys are wheels mounted on shafts. Its main function is to assist the movement of heavy objects. A single-wheel pulley can change the direction of the force, enabling a person to pull heavy objects. A dual-wheel pulley distributes the weight evenly across both wheels, allowing it to lift the same weight with half the effort.
The mechanical advantage of a two-wheel pulley is that it reduces the force required by about half. A 100 kg object can be lifted with a force of 500 Newtons. The mechanical advantage of a pulley with 2 wheels is twice that of a single-wheel pulley. However, care should always be taken when using two-wheel pulleys.
Two-wheel pulleys can be fixed or movable. A single wheel pulley can only change direction when the load is placed on 1 side of the wheel. Two-wheel pulleys change direction when lifting a load, requiring half the force. Live wheels are better for heavier loads. The movable pulley can be adjusted with the load, and the load distribution is more uniform. Active pulleys can be used with single-rope or two-wheel pulleys.
A pulley system with 2 wheels is called a compound pulley. This type of pulley system has a complex design that reduces the force required to move the load. Two-wheel pulleys are common in industrial and construction environments. These pulleys require a lot of space to install and operate. Additionally, they require regular maintenance to avoid wear and tear.
composite pulley
Compound pulleys are used to increase lift. One fixed pulley is attached to the overhead while the other fixed pulley is attached to the load. This setup minimizes the force required to lift weights, allowing you to lift heavier weights. There are several different types of compound pulleys, each with their own strengths and weaknesses. Below are some examples of their application. Some of the most common are listed below.
Composite pulleys are usually made from 2 different types of wheels. The first 1 is fixed and secure. The second type, movable, is attached to something that moves. The third type, compound pulley, is a combination of a movable pulley and a fixed pulley. Below are 3 types of comparisons. The table below compares them and explains their advantages and disadvantages. Composite pulleys are the most versatile of the three.
The number of sheave segments that make up the composite sheave system increases the mechanical advantage of the system. Each segment adds 1 percent of the total weight, and the ideal mechanical advantage is 2 or more. So a compound pulley with 4 segments will lift three-quarters of the weight. This is because the force applied to the load is multiplied by four. The result is a better boost.
While composite pulleys have many uses, they are most commonly used on larger sailboats. These pulleys work by changing the direction of the control wire or by changing the mechanical force of the rope. They also make it easier to lift heavier objects. Composite pulleys are more expensive than simple pulleys, so consider your needs before buying. The advantages of composite pulleys outweigh the disadvantages.
A basic compound pulley is a device consisting of 2 wheels with fixed points. Ropes are looped around the wheels and are used to lift heavy objects. When you pull on the rope, the rope pulls the 2 wheels closer together. Serious injury could result if this equipment is installed incorrectly. Never exceed the lifting capacity of pulleys and other safety devices that may be attached. When using pulleys, be sure to follow the instructions on the mounting hardware to avoid accidents.
Fixed pulley
Moving pulleys and fixed pulleys are different types of mechanical devices. The movable pulley moves with the object it is used to lift. Because it attaches to the object it is used to lift, it is great for lifting heavy objects. These devices are used in construction cranes and multipurpose elevators. There are many different types of pulleys, and their uses vary widely. Below is a brief overview of these devices.
The simplest pulley set consists of a wheel that is mounted on the ceiling. A rope is attached at 1 end and a person pulls at the other end. The rope is strong enough to keep a person standing while lifting weights. It takes about 200 Newtons of force to lift a 20 kg weight. In contrast, a movable pulley requires a force of 1000N, which makes it easier to lift heavy objects.
Fixed pulleys are another common lifting device. They work by using ropes and slotted wheels attached to the object to be lifted. These devices are convenient to use because they are easy to set up. Moving the scroll wheel doesn’t change direction, so it’s easier to move objects without putting too much pressure on the back. Unlike a moving rope, a moving object will feel much lighter than its actual weight.
Fixed pulleys are widely used in construction and agriculture. Fixed pulleys can help lift supplies and equipment from scaffolding. These items are often heavy and difficult to lift directly. Fixed pulleys at the top of the scaffolding will allow people at the bottom to lift objects more easily. As a result, those at the bottom are less stressed and more productive. Fixed pulleys will save time and money compared to moving ropes.
Composite pulleys combine fixed and movable pulleys to increase the power of movement. A compound pulley system uses both types of pulleys and enables a person to change direction by reversing the direction of a force. The compound pulley system will save time and effort as the user only has to put in half the effort. Unlike moving ropes, composite pulleys are easy to adjust and are the most versatile system on the market.
Blocks and tackles
A pulley block system is a rope hoist that uses a set of pulleys mounted on a frame. The blocks are arranged in a row, and the threaded rope is called a pulley. Pulley systems help amplify the tension of the rope and are common in sailboats, cranes and drilling rigs. However, these systems are not without drawbacks.
The pulley pulley system can be equipped with as many pulleys as required. This method allows a person to lift heavy objects. The pulley block system can contain the required number of pulleys to achieve the desired height. The main disadvantage of pulley systems is that they create a lot of friction on the pulley shaft.
Pulley systems use 2 types of pulleys. A movable pulley is attached to the load, allowing it to move with the load. On the other hand, fixed pulleys are fixed on fixed points. Therefore, a pulley block system may consist of multiple pulleys mounted on a shaft. For example, the 2 pulleys attached to the shaft each have their own mechanical advantages.
Several types of tackle systems have been developed in recent centuries. The most basic is the gun mount, which uses 2 pulleys to lift the load. The mechanical advantage of such a system is 2 to 3 times the distance required by the rope to move the load. Depending on how they’re assembled, the system can lift 400 pounds with 80 or 100 pounds of force.
Another type of pulley is a combination of multiple wheels. The wheels on pulleys are supported by a housing or frame. The chain is attached to the pulley, and the rope is pulled to lift it. A combined pulley system will have multiple wheels. As the load increases, the force on the pulley also increases. This approach is generally more expensive than intercept and intercept systems.
