Product Description

PRODUCT DESCRIPTION:
We provide services for CNC machining/ forging / casting / stamping /metal fabrication…
all parts can be produced according to customer’s drawings and designs.

Forgings including: mold forging , free forging, smith forging,open die forging, hot forging, cold forging.
SHEAVES:
They are available in sizes that range from 12″ to 120″ and grooved to customer specification. The bore can be made to accommodate tapered roller bearings, bronze bushings, snap rings, or to customer specification. We also manufacture sheaves to industry standards such as API 8A or 8C, or DIN, and third party certifications such as ABS or DNV is available upon request. Our sheaves feature normalized forged rings to eliminate cracks, full penetrations welds between the web and hub and each sheave is thermally stress relieved. Also all sheave are flame hardened to a minimum of 35 RC and each bore is concentric to the groove to ensure correct operation.

Material

Stainless Steel	SS201,SS301, SS303, SS304, SS316, SS316L,SS416 ,AISI 440C,17-4PH etc.
Steel/Alloy	mild steel, Carbon steel, 4140, 4340,65Mn,60Si2Mn, Q235, Q345B, 1571steel, 1045steel,A106,A105, A570-50,CR-MO4130,Astm A487 grade 9A, 52100 Bearing steel ,S45c, Sm490A, AVP/S235JRG2,DD14, 1.0037 ,etc, ASTM 1197-47, 25CRMO4V,SCM435, 11SMNPB30,1. 0571 ,.A36
Brass	HPb63, HPb62, HPb61, HPb59, H59, H62, H68, H80 ,Bronze 660, C93200,Bronze CDA873 or 956,CDA873,C95600,MAILEABLE IRON ASTM A47-77,  etc.
Copper	C11000,C12000,C12000 C36000,C100 etc.
Aluminum	AL1100,AL6061, Al6063-T6, AL6082, AL7075, AL5052, A380 etc.
Iron	1213, 12L14, 1215,ductile iron astm a536, 60-40-18, 60-45-12, FE E420,etc
Plastic	ABS, PC, PE, POM, Delrin 2700 NC571, Nylon, Teflon, PP,PEI, Peek etc.

Finishing:

Zinc plating, Chrome plating, Nickel plating, Tin plating,  Polishing, Anodizing, Power-coating, Dacromet, Oxide black, Sandblast Anodizing, Electroless nickel, Fe/Zn8/C PER ISO 2081, etc.

 

Specifications:
Design:	We use the most advanced CZPT design software Auto CAD, Pro/E, Solidworks, UG (dwg, dxf, IGS, STP, X-T)
Manufacture:	We use advanced technology, unmatched skill, professional and advanced equipment size range from 15T-10000T, and experienced technicians to fit our customers requirements, like tooling manufacturing,robot welding,forging, steel casting, stamping and surface treatment service
Process and Capability:	Cnc machining, Casting,Forging,Progression die, Stamping, Metal Deep drawn, Bending, Punching, Threading, Welding, Tapping, Riveting, Grinding, Laser cutting,Metal Fabrication,forming,spinning, CNC Punching,  Plasma cutting, Goffered, Stretch forming ,Tig/Mig Welding,Assembling, Shearing, Blanking, CNC Bending…………,
Price Terms:	Fob HangZhou or ZheJiang or any other port in CHINA
Lead time:	20-50days based on the different products
Packaging:	Wooden package and canton case or as per customers’ requirement
Certification:	ISO9001:2018 , SGS , TS16949,API 8C
Industry:	these parts are used in hydraulic presses, press line automation and die handling equipment,Automotive, Electrical, Building, Furniture, Machine assembly, Computer, Air industry , Oil field Equipments, Marine equipments, Mine equipment,Agricultural Machines,Transportation Equipments, OEM/ODM Electronics……

DETAILED PHOTOS:

OUR ADVANTAGES:
1.Good Quality with strict inspection process. control the tolerance up to +,-0.002MM.
2.Competitive Price and prompt delivery time.
3. International Quality Certified
4.Skilled workers 
5.Warranty After-sales-service
FAQ:
Q1: How can I get quote ?
A1: pls send us PDF,JPG,or other 2D files and 3D drawings. if you don;t have drawings. pls send me samples.

Q2: How you guarantee the quality?
A2: Our production will be strictly comply with the drawing requirements.we offer details photos and inspected reports to let you confirm before shipment.we will take the responsibilty for any quality issue.

Q3: What is payment term?
A3: 30% depoist in advance and the balance to be paid against the copy of BL.or LC at sight.

Q4: How about the shipment and package?
A4: If you have nominated forwarding company, we can contact him, if you don’t have .my company will organise the best-service forwarding company with the lowest shipping cost. 

Q5: How to pack the cargos?
A5: If you have special packing request, pls send us design, my company will make the package exactly according to your designs.
or my company use our own good and standard package (carton or wooden box, or pallet or others according to different products )
 

How to use the pulley system

Using a pulley system is a great way to move things around your home, but how do you use a pulley system? Let’s look at the basic equations that describe a pulley system, the types of pulleys, and some safety considerations when using pulleys. Here are some examples. Don’t worry, you’ll find all the information you need in 1 place!

Basic equations of pulley systems

The pulley system consists of pulleys and chords. When the weight of the load is pulled through the rope, it slides through the groove and ends up on the other side. When the weight moves, the applied force must travel nx distance. The distance is in meters. If there are 4 pulleys, the distance the rope will travel will be 2×24. If there are n pulleys, the distance traveled by the weight will be 2n – 1.
The mechanical advantage of the pulley system increases with distance. The greater the distance over which the force is applied, the greater the leverage of the system. For example, if a set of pulleys is used to lift the load, 1 should be attached to the load and the other to the stand. The load itself does not move. Therefore, the distance between the blocks must be shortened, and the length of the line circulating between the pulleys must be shortened.
Another way to think about the acceleration of a pulley system is to think of ropes and ropes as massless and frictionless. Assuming the rope and pulley are massless, they should have the same magnitude and direction of motion. However, in this case the quality of the string is a variable that is not overdone. Therefore, the tension vector on the block is labeled with the same variable name as the pulley.
The calculation of the pulley system is relatively simple. Five mechanical advantages of the pulley system can be found. This is because the number of ropes supporting the load is equal to the force exerted on the ropes. When the ropes all move in the same direction, they have 2 mechanical advantages. Alternatively, you can use a combination of movable and fixed pulleys to reduce the force.
When calculating forces in a pulley system, you can use Newton’s laws of motion. Newton’s second law deals with acceleration and force. The fourth law tells us that tension and gravity are in equilibrium. This is useful if you need to lift heavy objects. The laws of motion help with calculations and can help you better understand pulley systems.

Types of pulleys

Different types of pulleys are commonly used for various purposes, including lifting. Some pulleys are flexible, which means they can move freely around a central axis and can change the direction of force. Some are fixed, such as hinges, and are usually used for heavier loads. Others are movable, such as coiled ropes. Whatever the purpose, pulleys are very useful in raising and lowering objects.
Pulleys are common in many different applications, from elevators and cargo lift systems to lights and curtains. They are also used in sewing machine motors and sliding doors. Garage and patio doors are often equipped with pulleys. Rock climbers use a pulley system to climb rocks safely. These pulley systems have different types of pinions that allow them to balance weight and force direction.
The most common type of pulley is the pulley pulley system. The pulley system utilizes mechanical advantages to lift weight. Archimedes is thought to have discovered the pulley around 250 BC. in ancient Sicily. Mesopotamians also used pulleys, they used ropes to lift water and windmills. Pulley systems can even be found at Stonehenge.
Another type of pulley is called a compound pulley. It consists of a set of parallel pulleys that increase the force required to move large objects. This type is most commonly used in rock climbing and sailing, while composite pulleys can also be found in theater curtains. If you’re wondering the difference between these 2 types of pulleys, here’s a quick overview:

Mechanical Advantages of Pulley Systems

Pulley systems offer significant mechanical advantages. The ability of the system to reduce the effort required to lift weights increases with the number of rope loops. This advantage is proportional to the number of loops in the system. If the rope had only 1 loop, then a single weight would require the same amount of force to pull. But by adding extra cycles, the force required will be reduced.
The pulley system has the advantage of changing the direction of the force. This makes it easier to move heavy objects. They come in both fixed and mobile. Pulleys are used in many engineering applications because they can be combined with other mechanisms. If you want to know what a pulley can do, read on! Here are some examples. Therefore, you will understand how they are used in engineering.
Single-acting pulleys do not change direction, but compound pulleys do. Their mechanical advantage is six. The compound pulley system consists of a movable pulley and a fixed pulley. The mechanical advantage of the pulley system increases as the number of movable wheels decreases. So if you have 2 wheels, you need twice as much force to lift the same weight because you need a movable pulley.
The mechanical advantage of a pulley system can be maximized by adding more pulleys or rope lengths. For example, if you have a single pulley system, the mechanical advantage is 1 of the smallest. By using 2 or 3 pulleys, up to 5 times the mechanical advantage can be achieved. You can also gain up to 10 times the mechanical advantage by using multiple pulley systems.
The use of a single movable pulley system also adds to the mechanical advantage of the pulley system. In this case, you don’t have to change the direction of the force to lift the weight. In contrast, a movable pulley system requires you to move the rope farther to generate the same force. Using a compound pulley system allows you to lift heavy loads with ease.

Safety Issues When Using Pulley Systems

Pulleys have an incredibly unique structure, consisting of a disc with a groove in the middle and a shaft running through it. A rope or cord is attached to 1 end of a pulley that turns when force is applied. The other end of the rope is attached to the load. This mechanical advantage means that it is much easier to pull an object using the pulley system than to lift the same object by hand.
Although pulley systems are a common part of many manufacturing processes, some employers do not train their workers to use them properly or install protection to prevent injury. It is important to wear proper PPE and follow standard laboratory safety practices during pulley system activities. Make sure any support structures are strong enough to handle the weight and weight of the rope or rope. If you do fall, be sure to contact your employer immediately.