cast iron pulley manufacturers

Cast iron pulley manufacturers produce pulley which is a simple machine that consists of a grooved wheel and a rope, cable, or chain. It is used to change the direction of an applied force and to multiply force. By pulling on the rope or cable that is looped around the pulley, a person can lift or move heavy objects with less effort.

The pulley system works on the principle of mechanical advantage, where the force applied is multiplied by the number of ropes or cables that pass through the pulleys. Pulleys are used in various machines and systems, such as elevators, cranes, and conveyor belts. They are also used in everyday household items like window blinds and clothesline.

Design of Conical Belt Pulley Width Plate

Design of flower holes for tapered belt pulleys

Small plane design of cone sleeve pulley

Design of Ribs for Conical Sheave Pulley

The motor speed is 1400 rpm, and the pulley diameter is 30 centimeters,The speed is 650 revolutions per minute. May I know the diameter of the motor pulley?

How much is it?

The letter “P” on the pulley drawing represents the pitch circle; Generation “O” refers to outer diameter; “F” represents the wheel thickness; “L” represents the hole length; “N” represents Small outer diameter.

 1. Cast iron pulley surface phosphating blackening

Surface phosphating and blackening treatment, beautiful and elegant, improving the overall quality of the machine. Increase rust resistance and extend service life

2. Strictly follow the international DIN2211 standard for production and achieve international integration of accessories

3. Smooth transmission

1. • Before leaving the factory, it must undergo a dynamic balance test with minimal vibration.
   • Can achieve the purpose of extending the service life of the entire mechanical system.

4. Simple structure and convenient disassembly and assembly.

5. Six advantages of cast iron pulleys:

• 1. Easy to process: Gray cast iron has good processing performance, especially in the processing of belt grooves. If steel parts are used, it is very difficult to process, while using gray cast iron is quite easy.
• 2. High precision and less prone to deformation: This can be said to be the main reason why gray cast iron is popular. Gray cast iron has very little deformation, and after groove cutting, it will hardly deform, ensuring that the behavior tolerance meets the requirements, thereby ensuring transmission accuracy.
• 3. Good shock absorption performance: Gray cast iron has excellent shock absorption, which can prevent vibration during operation.
• 4. Good casting performance: Gray cast iron has good casting performance and can be cast into rib plates and web plates through molds. If cast steel is used, its casting performance is much worse, which is also one of the reasons for choosing gray iron.
• 5. Wear resistance and long life cycle: Gray cast iron also has better wear resistance than steel parts. The belt pulley rotates continuously to avoid wear, and the material selection is the main reason.
• 6. Small thermal deformation and durability: Gray cast iron has very small thermal deformation, while steel parts will be very large. To avoid deformation, gray cast iron is usually used.

As a leading manufacturer in the industry, we pride ourselves on the exceptional quality of our Cast iron pulleys. We have years of experience crafting and machining these pulleys according to the highest standards in the marketplace.

You can rest assured that all of our products are made with the utmost care and precision to ensure long lasting use, durability, and optimum performance. Whether you’re looking for a new replacement pulley for your industrial machines or you need a custom-made pulley for a specific application, we have the expertise and resources to deliver the perfect solution for you. Contact us today to learn more about our Cast iron pulley manufacturing capabilities and how we can help you with all your pulley needs.

Many companies work all day to ensure production, resulting in equipment always running non-stop 24 hours a day. So the maintenance of equipment parts is particularly important. What are the misconceptions in the maintenance of cone sleeve pulleys, as incorrect maintenance methods can lead to damage to machinery and mechanical accidents?

Three major maintenance misconceptions for cone sleeve pulleys:

1. The tighter the bolt, the better. There are many fasteners connected with bolts and nuts in cars, and they should be ensured to have sufficient pre tightening force, but they should not be tightened too tightly. If tightened too tightly, the bolts and connectors will undergo permanent deformation, and the preload will actually decrease, even causing slipping or breakage.
2. The tighter the transmission belt, the better. If the transmission belt is adjusted too tightly, it is easy to stretch and deform, while the tapered pulley and bearings are prone to bending and damage.
3. The more oil there is, the better. If there is too much oil, the crankshaft and connecting rods of the engine will experience severe agitation during operation, which not only increases the internal power loss of the engine, but also leads to oil burning and discharging faults due to the increased amount of oil splashed onto the cylinder wall.

Do you think the surface of cast iron pulleys used in industry is black and smooth? You may not have had actual contact with it. Most European standard pulleys have undergone phosphating blackening and dynamic balancing treatment, but ordinary cast iron pulleys often experience sand inclusion during production and processing which most China sand casting foundry may meet.. What is “sanding”?

It is estimated that only those who frequently deal with cast iron pulleys will be more familiar with it. When sand inclusions appear on the cast iron pulley, it indicates a defect, which is an “expansion defect”. It also has two other forms: “rat tail” and “groove”. This kind of defect is irreversible, but after being processed by the manufacturer, it can still be used on production equipment with lower balance requirements. What causes the phenomenon of “sand inclusion”?Let’s analyze together.

The principle of sand inclusion in cast iron pulleys:

Its formation is due to the continuous erosion of high-temperature molten iron between the sand molds during casting, coupled with the heating effect of baking, which causes the water in the sand mold to migrate and expand in volume, resulting in the surface layer lifting and cracking.

To avoid the occurrence of sand inclusion in two aspects:

1. Make qualified sand molds. Strictly control the material quality of sand molds; Select the appropriate casting mold based on the casting; Increase the exhaust holes of the sand mold.

2. It is best to use a relatively low temperature for rapid casting during casting, choose a suitable casting position, and facilitate the stable filling of iron horizontally and the discharge of gas.

Sipx casting reminder: Although cast iron pulleys with “sand inclusion” phenomenon can also be used in industrial production, we still try to reduce this phenomenon as much as possible to make customers feel at ease when using them. Of course, there will be no such concerns when purchasing Sipx cast iron pulleys.

1、 Sticky sand and rough surface: Sticky sand is a surface defect in castings, manifested as sand particles adhering to the surface of the pulley that are difficult to remove; If the belt pulley has an uneven and unsmooth surface after removing sand particles, it is called rough surface.

2、 Cause of occurrence:

• The sand particles are too coarse and the compactness of the sand mold is not enough;
• The high moisture content in the molding sand makes it difficult to compact;
• The pouring speed is too fast, the pressure is too high, and the temperature is too high;

3. The template drying temperature is too high, causing the surface molding sand to dry up; Or if the drying temperature of the template is too low, the molding sand will adhere to the template.

4、 Prevention method:

• When the permeability is sufficient, use finer raw sand and appropriately increase the compactness of the molding sand;
• Strictly control the moisture content of the sand to ensure a stable and effective coal powder content in the molding sand;
• Improve the pouring system, improve pouring operations, and reduce pouring temperature;
• Control the baking temperature of the template, generally equal to or slightly higher than the temperature of the molding sand.