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Product Description

General Products      
 Application/Service Area
 
Metal Parts Solution for Vehicle, Agriculture machine, Construction Machine, transportation equipment, Valve and Pump system, Agriculture machine metal Parts, engine bracket, truck chassis bracket, gear box , gear housing , gear cover, shaft, spline shaft , pulley, flange, connection pipe, pipe, hydraulic valve , valve housing ,Fitting , flange, wheel, fly wheel, oil pump housing, starter housing, coolant pump housing, transmission shaft , transmission gear, sprocket, chains etc.
 
 Main blank Process for Casting  
Sand Casting , Resin Sand Casting, Green Sand Casting, Shell Molding, Automatic Molding, Lost Wax Casting, Lost Foam Molding Casting
 
 Blanks Tolerance -Casting  Tolerance CT9-10 for  Machine Molding Process,
CT8-9 for Shell Molding and Lost Foam Molding Casting Process
CT10-11 for Manual Molding Sand  casting Process
 Applicable Material  
See Table Below (Ductile Iron Casting, Grey Iron Casting)
OR According to customer requirement
 
 Casting Blank Size  /Dimensions 2 mm-2000mm / 0.08inch-79inch  for casting iron, according to customer requirement
 Casting Blank Weight Range from 0.01kg-1000kg for casting iron
 Applicable Machining Process  
CNC Machining/ Lathing/ Milling/ Turning/ Boring/ Drilling/ Tapping/ Broaching/Reaming /Grinding/Honing and  etc.
 
 Machining Tolerance From 0.005mm-0.01mm-0.1mm
 Machined Surface Quality Ra 0.8-Ra3.2, according to customer requirement
 Applicable Heat Treatment  
Normalization , annealing, quenching and tempering, Case Hardening, Nitriding, Carbon Nitriding, Induction Quenching
 
 Applicable Finish Surface  Treatment  
Shot/sand blast, polishing, Surface passivation, Primer Painting , Powder coating, ED- Coating, Chromate Plating, zinc-plate, Dacromat coating, Finish Painting.
 
 MOQ For iron casting : 100pcs
For Machining : 50pcs
 Lead Time 45days from the receipt date of deposit for big size cast pulley

 
Ductile Iron Casting Material Comparison Table:

Cast iron with nomular graphite
DIN EN 1563
Germany
DIN 1693
France
NF
Great Britain
BS
Netherlands
NEN
Sweden
MNC
USA
ASTM A536
EN-GJS-350-22-LT GGG-35.3 FGS 370-17 370/17 GN 38 0571 -15 —-
EN-GJS-400-18-LT GGG-40.3     —- —- —- —- 60-40-18
EN-GJS-400-15 GGG-40 FGS-400-12 420/12 GN 42 0571 -02 60-40-18
EN-GJS-400-10 —- —- 420/12 —- —- 65-45-12
EN-GJS-500-7 GGG-50 FGS-500-7 500/7 GN 50 0727-02 65-45-12/
80-55-06
EN-GJS-600-3 GGG-60 FGS-600-3 600/3 GN 60 571-03 80-55-06
EN-GJS-700-2 GGG-70 FGS-700-2 700/2 GN 70 571-01 100-70-03
EN-GJS-800-2 GGG-80 FGS-800-2 800/2     120-90-02
EN-GJS-1000-5 (DIN EN 1564) GGG-100B/A —- —- —- —- 850-550-10
EN-GJS-AX NiSiCr35 5 2 GGG-
NiSiCr 35 5 2
FGS-
Ni35Si5Cr2
S5S —- —- Type D-5S

 
Grey Iron Casting Material Comparison Table:

Cast iron with lamellar graphite
DIN EN 1561
Germany
DIN 1691
France
NF
Great Britain
BS
Netherlands
NEN
Sweden
MNC
USA
ASTM A48
EN-GJL-150 GG-15 Ft 15 D Grade 150 GG 15 01 15-00 20 B / 25 B
EN-GJL-200 GG-20 Ft 20 D Grade 180/220 GG 20 01 20-00 25 B / 30 B
EN-GJL-250 GG-25 Ft 25 D Grade 220/260 GG 25 01 25-00 35 B / 40 B
EN-GJL-300 GG 30 Ft 30 D Grade 300 GG 30 01 30-00 40B / 45 B

 

 

Our Package :

Packing & Delivery  (Show As Above):
Inner Packing →Strong & waterproof plastic big is packed inside, to keep the product in safe condition.
Or as customer requests.

Outer Packing →Multilayer wooden box with strong bandages, used for standard export package.
Or customized as per customer’s requirements.

Our Company

                       ZheJiang CZPT Machinery Manufacture Co., Ltd.
                                                                                                   –Branch of CZPT Ltd. 

We specialize in Metal Parts Solution for Vehicle, Agriculture machine, Construction Machine, transportation equipment, Valve and Pump system etc. 

With keeping manufacturing process design, quality plHangZhou, key manufacturing processes and final quality control in house.
We are mastering key competence to supply quality mechanical parts and assembly to our customers for both Chinese and Export Market .

To satisfy different mechanical and functional requirements from our customers we are making a big range of metal products for our clients on base of different blanks solutions and technologies.
These blanks solutions and technologies include processes of Iron Casting, Steel Casting, Stainless Steel Casting, Aluminum Casting and Forging. 

During the early involvement of the customer’s design process, we are giving professional input to our customers in terms of process feasibility, cost reduction and function approach.

                You are welcome to contact us for technical enquiry and business cooperation.

FAQ:
1. Are you a manufacturer or a trading company?
We are a professional manufacturer with over 15 years’ export experience for designing and producing vehicle machinery parts.

2. How can I get some samples?
If you need, we are glad to offer you samples for free, but the new clients are expected to pay the courier cost,
and the charge will be deducted from the payment for formal order.

3. Can you make casting according to our drawing?
Yes, we can make casting according to your drawing, 2D drawing, or 3D cad model. If the 3D cad model can be supplied,
the development of the tooling can be more efficient. But without 3D, based on 2D drawing we can still make the samples properly approved.

4. Can you make casting based on our samples?
Yes, we can make measurement based on your samples to make drawings for tooling making.

5. What’s your quality control device in house?
We have spectrometer in house to monitor the chemical property, tensile test machine to control the mechanical property and UT Sonic as NDT checking method to control the casting detect under the surface of casting.

Three basic types of pulleys, their applications and ideal mechanical advantages

There are 3 basic types of pulleys: movable, fixed and compound. Each has its advantages and disadvantages, and you should be able to judge which type is best for your needs by looking at the table below. Once you have mastered the different types of pulleys, you can choose the right pulley for your next project. Now that you have mastered the 3 basic types, it is time to understand their applications and ideal mechanical advantages.
pulley

describe

The stress characteristics of a pulley depend on its size and construction. These stresses are derived by comparing the stress characteristics of different pulley designs. Stress criteria include static and fatigue strength analyses and specify maximum stress ranges. Stresses are calculated in a 3D stress field, including radial, tangential and axial stresses. The stress characteristics of pulleys are critical to the design and manufacture of industrial machines.
The principal stresses on the pulley shell are distributed in the tangential and hoop directions, close to the centerline of the pulley. If the pulley has a wide face, the axial stress occurring near the shell/disk junction can be large. The stress distribution was determined using British Standard BS5400 Part 10: Stresses at the shell and end disc connections for infinite fatigue life.
Another type of composite is a pulley with a belt section. Such structures are well known in the art. The corresponding help chapters for these elements contain detailed descriptions of the internal structure of these components. Chamfers between pulleys can also be defined using multiple tapers, with a smaller taper extending from midpoint 44 to large diameter 42. Additionally, the pulley can have multiple taper angles, and as the pulley moves away, the taper angle is from the center.

type

A pulley system uses a rope to move the object and 1 side of the rope to lift the load. The load is attached to 1 end of the pulley, while the other end can move freely in space. The force applied to the free end of the rope pulls the load up or down. Because of this, the mechanical advantage of the movable pulley is 2 to one. The greater the force applied to the free end of the rope, the greater the amount of movement achieved.
There are 3 common types of pulleys. The cast-iron variety has a rim at the front and a hub at the back. The arms of the pulley can be straight or curved. When the arms contract and yield instead of breaking, they are in tension. The top of the pulley centers the belt in motion and is available in widths ranging from 9mm to 300mm.
The rope, hub and axle are mounted on the pulley. They are common and versatile mechanical devices that make it easier to move or lift objects. Some pulleys change the direction of the force. Others change the magnitude. All types of pulleys can be used for a variety of different applications. Here are some examples. If you’re not sure which type to choose, you can find more resources online.
pulley

application

The applications for pulleys are almost limitless. This simple machine turns complex tasks into simple ones. They consist of a rope or chain wrapped around a wheel or axle. Using ropes, 1 can lift heavy objects without the enormous physical exertion of traditional lifting equipment. Some pulleys are equipped with rollers, which greatly magnifies the lifting force.
When used properly, the pulley system can change the direction of the applied force. It provides a mechanical advantage and allows the operator to remain separate from heavy objects. They are also inexpensive, easy to assemble, and require little lubrication after installation. Also, once installed, the pulley system requires little maintenance. They can even be used effortlessly. Despite having many moving parts, pulley systems do not require lubrication, making them a cost-effective alternative to mechanical lifts.
Pulleys are used in many applications including adjustable clotheslines in different machines, kitchen drawers and motor pulleys. Commercial users of pulley systems include cranes. These machines use a pulley system to lift and place heavy objects. They are also used by high-rise building washing companies. They can easily move a building without compromising its structural integrity. As a result, many industries rely on technology to make elevators easier.

Ideal mechanical advantage

The ideal mechanical advantage of a pulley system is the result of rope tension. The load is pulled to the center of the pulley, but the force is evenly distributed over the cable. Two pulleys will provide the mechanical advantage of 2 pulleys. The total energy used will remain the same. If multiple pulleys are used, friction between pulleys and pulleys reduces the return of energy.
Lever-based machines are simple devices that can work. These include levers, wheels and axles, screws, wedges and ramps. Their ability to work depends on their efficiency and mechanical superiority. The ideal mechanical advantage assumes perfect efficiency, while the actual mechanical advantage takes friction into account. The distance traveled by the load and the force applied are also factors in determining the ideal mechanical advantage of the pulley.
A simple pulley system has an MA of two. The weight attached to 1 end of the rope is called FA. Force FE and load FL are connected to the other end of the rope. The distance that the lifter pulls the rope must be twice or half the force required to lift the weight. The same goes for side-by-side pulley systems.

Materials used in manufacturing

While aluminum and plastic are the most common materials for making pulleys, there are other materials to choose from for your timing pulleys. Despite their different physical properties, they all offer similar benefits. Aluminum is dense and corrosion-resistant, and plastic is lightweight and durable. Stainless steel is resistant to stains and rust, but is expensive to maintain. For this reason, aluminum is a popular choice for heavy duty pulleys.
Metal can also be used to make pulleys. Aluminum pulleys are lightweight and strong, while other materials are not as durable. CZPT produces aluminium pulleys, but can also produce other materials or special finishes. The list below is just representative of some common materials and finishes. Many different materials are used, so you should discuss the best options for your application with your engineer.
Metals such as steel and aluminum are commonly used to make pulleys. These materials are relatively light and have a low coefficient of friction. Steel pulleys are also more durable than aluminum pulleys. For heavier applications, steel and aluminum are preferred, but consider weight limitations when selecting materials. For example, metal pulleys can be used in electric motors to transmit belt motion.
pulley

cost

Replacing a tensioner in a car’s engine can cost anywhere from $90 to $300, depending on the make and model of the car. Cost can also be affected by the complexity of the pulley system and how many pulleys are required. Replacement costs may also increase depending on the severity of the damage. The cost of replacing pulleys also varies from car to car, as different manufacturers use different engines and drivetrains.
Induction motors have been an industrial workhorse for 130 years, but their cost is growing. As energy costs rise and the cost of ownership increases, these motors will only get more expensive. New technologies are now available to increase efficiency, reduce costs and improve safety standards.
The average job cost to replace an idler varies from $125 to $321, including labor. Parts and labor to replace a car pulley can range from $30 to $178. Labor and parts can cost an additional $10 to $40, depending on the make and model of the car. But the labor is worth the money because these pulleys are a critical part of a car’s engine.

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