Sprocket

SSTmachinery is one of the most professional sprocket manufacturers in China, providing parts for various mechanical products in chemical, textile machinery, food processing, instrumentation, petroleum and other industries.

Chain transmission is a transmission mode that transmits the motion and power of the driving sprocket with special tooth shape to the driven sprocket with special tooth shape through the chain.

Chain drive has many advantages, such as accurate average transmission ratio, reliable operation, high efficiency, large transmission power and strong overload capacity. It can work in harsh environments such as high temperature, humidity, dust and pollution.

We can provide customers with products of high quality and reasonable price. We can produce sprockets according to DIN, ANSI, ISO and other standards or drawings.

We also provide customers with the most considerate service and technical support. Contact us immediately and get a quick quotation.

Why Choose Us

Quality Control

Inspection ensures that the quality of goods meets the standards set by the manufacturer, importer, or buyer. This helps to prevent defective or substandard products from reaching the market.

Compliance

Inspection ensures that the goods meet the legal and regulatory requirements of the importing country. Failure to comply with regulations may result in fines, penalties, or even seizure of the goods.

Contractual Obligations

Inspection helps to ensure that the goods conform to the terms of the sales contract, including specifications, quantities, and delivery dates.

Customer Satisfaction

Inspection can help to improve customer satisfaction by reducing the likelihood of defective or damaged products being delivered. This ultimately leads to increased customer loyalty and repeat business.

What is Sprocket?

A sprocket is a simple mechanical wheel with teeth or small notches which are designed to rotate and engage with the links of a chain or belt. To be compatible, though, they both need to have the same thickness and pitch.

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Types Of Sprockets

01/

Double Pitch Sprockets
Similar to standard sprockets except there is half the number of teeth. They are used with a small roller double pitch chain to accommodate longer distances between rollers. Common chain sizes are: 2040, 2050, 2060, 2080, and 2100 or 2042, 2052, 2062, 2082, and 2102 for larger diameters.

02/

Multiple Strand Sprockets
Multi-strand sprockets are used where higher torque and power are needed, or where two or more items are being powered by a common drive shaft. Available in 40 through 160 chain pitch with plain, finished, taper-lock, or QD style hubs.

03/

QD (Quick Disconnect) Sprockets
QD sprockets are used where higher working loads and high clamp loading on the shaft is desirable. They are flanged and use anchor bolts around the circumference. Sprockets with tapered bushings are easy to install and remove, provide clamp force, and align the sprocket.

04/

Taper-Lock Sprockets
Taper-lock sprockets utilize a split through the taper and flange to provide a true clamp on the shaft. A Taper-Lock bushing is retained to the sprocket with set screws. They offer flexibility by allowing multiple-sized bores for a single bushing size.

05/

Steel Split Sprockets
Steel split sprockets are split through the entire radius for easy installation and removal. The halves are held together by bolts. This style is available in pitch sizes 40 through 240, and bore diameters of 3/4 through 6 in.

06/

Double Single Sprockets
Double single sprockets are used in applications where two or more items are powered by a common drive shaft. The space between the plates is wider than a multi-strand sprocket and allows two separate strands of chain to engage without contacting the other. One strand may exit in a different direction than the other.

07/

Idler Sprockets
Idler sprockets are used where the chain may experience slack due to long lengths, where there is a non-adjustable drive shaft, or where the chain has been guided around an obstruction. Using idler sprockets prevents chain whipping and uneven load distribution.

08/

Double Plus Sprockets
Double plus sprockets are specifically designed to be used with Double Plus chain and are in conveyor applications where a product is moving at twice the speed of the drive system powering the conveyor. Benefits include less noise and longer chain life.

Chain Sprocket Standards and Sizes

Sprockets can have multiple strands of teeth. The most common type of sprocket is a single plate with a single row of teeth, sometimes called a simplex, which accounts for around 70 percent of market applications. Two rows of teeth are called a duplex and account for around 25 percent of applications. Finally, three strands of teeth are called a triplex, which has around five percent of market applications.

The two commonly seen standards for sprockets in North America are the American Standard (ANSI), the International Organization for Standardization (ISO), and the British Standard (BS), which is also known as the European Standard. Japan (JIN), Korea (KS), and Germany (DIN) all have chain and sprocket standards of their own, though they aren’t as prevalent in the United States.

The sizes of sprockets are typically followed by a hyphen and 1, 2, or 3 to designate how many strands of teeth are needed for a chain.

The Many Functions of Sprockets

Power Transmission: The Sprockets are designed to efficiently transfer power via a chain or belt from one rotating shaft to another.

Speed Variation: By changing the size of the sprockets, the speed ratio between input and output shafts can be seamlessly adjusted.

Direction Change: Sprockets have the ability to change the direction of rotation between shafts in an instant.

Torque Amplification: Through gear ratios, sprockets can amplify or reduce torque as needed so that your machine can operate at any level or speed.

Key Components of a Sprocket

Number of Teeth: This refers to the total count of teeth on the sprocket, with each individual tooth engaging with the links of a chain or belt. The number of teeth affects the sprocket's rotational speed and the torque it can transmit.

Pitch Diameter: This is the diameter of the sprocket measured at the point where the chain or belt engages with the teeth. It is crucial for ensuring that the sprocket and chain or belt work together smoothly. The pitch diameter influences the overall size and fit of the sprocket within a mechanical system.

Outside Diameter: This measures the diameter at the tips of the sprocket's teeth. It is essential for determining the sprocket's clearance and ensuring it fits within the designated space in a machine or vehicle.

Pitch: The pitch is the distance between corresponding points on adjacent teeth, usually measured in inches. It must match the pitch of the chain or belt to ensure proper engagement and efficient power transmission.

Applications of Sprockets

Automotive Industry: Sprockets are key components that are used in the automotive parts of engine timing systems, transmission systems, and steering mechanisms.

Manufacturing: Sprockets play a crucial role in various places throughout conveyor systems, assembly lines, and robotics.

Agriculture: Sprockets are found throughout machinery such as tractors, combines, and harvesters for tasks like driving conveyor belts and operating mechanisms.

Mining: Sprockets are employed in heavy-duty mining equipment for tasks such as conveying materials and driving crushers.

Construction

Sprockets are used in equipment like excavators, cranes, and bulldozers for functions such as lifting, digging, and material handling.

Cycling

Sprockets are integral components of bicycles and motorcycles, facilitating gear changes and power transmission.

Military

Sprockets are used on a plethora of equipment to ensure the highest performance of all materials.

HVAC

Sprockets are utilized with HVAC systems to optimize the machine ability on lathes, milling machines, routers, and more.

Design And Processing of Sprocket

When processing, users only need to provide the number of sprocket teeth, pitch and roller diameter to produce. Sprocket design according to GBl244-85 design. Non-standard sprocket on the basis of the user to provide the necessary data, do the following calculations: indexing circle diameter: d points = P/sin180 degrees / Z = P · K, P-pitch, K-number of teeth can check the table. Tooth groove arc radius: Rmin = O.505d, d = roller diameter. Pressure angle Qmin=l20 degrees-90/2; Qmax=140 degrees-90/2. Generally choose Qmax.

The tooth surface arc radius Remin = O.008d; (Z · Z + 180); Remax = O. 12 (Z · Z + 2). Remax is generally used. The position Do of the tooth surface arc radius is on the d-division 0.2P circle. Tooth groove separation S: machine, Smin = 0.08d; non-add, Smin = O.04P. General choice of machine plus tooth groove separation. Pitch angle a=360/Z. Tooth thickness: 0.95 for a single row with an inner section width, and 0.93 for a double row with an inner section width.

Machining Tooth Profile Of A Forming Knife: Using a forming disc cutter or using a finger-shaped milling cutter, machining a tooth groove on a horizontal or vertical milling machine equipped with a dividing head is a commonly used processing method. Suitable for batch processing of large pitch sprocket.

Hobbing Process Tooth Profile Method: The tooth groove is processed on the hobbing machine with a hob and is suitable for sprocket processing with a standard sprocket pitch of P=38.1 or less. high productivity. Good accuracy.

Saddle-shaped Milling Cutter Machining Method: Using a saddle-type milling cutter on a horizontal milling machine equipped with a dividing head, simultaneous milling of two teeth on two adjacent tooth slots is the current toothed sprockets Commonly used processing method. Suitable for medium and small batch production.

Sprocket Machining Tooth Profile Method: The sprocket spline is machined on the gear shaping machine with a circular disc cutter or a comb cutter. Suitable for single-piece production in small quantities.

The larger sprocket can also be used for marking, drilling, machining or inserting the tooth profile. It is also a processing method. Obviously, this method is relatively backward, but the large sprocket is limited by the processing equipment and quantity. This method can also be used.

Recently, some units have used the profiling machine to cut the tooth shape to solve the problem of large-scale sprocket processing and are very creative.

Profile cutting cutting process is as follows:
A. The sprocket to be added to the machine is placed on the index plate, and the sprocket is fixed by the pressure plate and bolt on the mandrel. The gear ring surface must be flat.

B. At any position on the gear ring that has been machined, the depth of cut of the model tooth profile is smaller than that of the design tooth profile by 4-5 mm, and then the squareness of the ruler surface is measured with a square.

C. Measure the distance H between the cut edge of the cut shape and the edge of the finished shaft hole.

D. The depth B needs to be processed. B = measurement size - distance between the edge of the shaft hole and the edge of the index circle.

E. Adjust the size of the connecting rod of the cutting machine, that is, extend a deepening amount on the basis of the original size, and then adjust it to cut according to the template.

F. After cutting a tooth, index with a dial. After cutting three teeth, measure the same side of the same distance. After cutting the fourth tooth, follow the same method to move the same tooth with the same side measurement, and so on.

G. If the difference in the measurement size is greater or the width of the top of the teeth is larger, the wider side can be cut and welded to the other tooth surface for trimming.

H. The tooth surface after cutting is surface-quenched after grinding with a hand wheel. L. Perform other processing.

Our Factory

SST machinery was established in 2010, engaged in two lines of transmission products, machine transmission and hydraulic transmission, like gear, sprocket, pulley, belt and hydraulic fitting, ferrule, adapter, brass fitting, connector ect.
We are not only proceed production strictly with DIN, ANSI, ISO standard and control well for tolerance, but also make products exactly as client's drawing.

FAQ

Q: What are the two types of sprockets?

A: Chain Sprocket. These are the most common types of sprockets used.
Duplex Sprocket. The duplex sprockets are usually made of mild steel and sometimes of stainless steel in many different sizes.
Industrial Sprocket.
Drive Sprocket.
Triple Sprocket.
Shaft Sprocket.
Simplex Sprocket.
Single Pitch and Double Pitch Sprocket.

Q: How do I identify a sprocket?

A: When identifying a sprocket with a part number, standardly the chain pitch will be written first, then the hub style or code, and followed by the number of teeth the sprocket has. If the sprocket is multi strand there will most often be a letter prefix at the beginning of the part number.

Q: What machines use sprockets?

A: Agriculture: Sprockets are found throughout machinery such as tractors, combines, and harvesters for tasks like driving conveyor belts and operating mechanisms. Mining: Sprockets are employed in heavy-duty mining equipment for tasks such as conveying materials and driving crushers.

Q: What is the main difference between a sprocket and a pulley?

A: A sprocket is a wheel with projections along the outside diameter that mesh with a chain or belt. A pulley is typically a wheel with a groove in which a rope or cable will ride.

Q: What do sprockets do?

A: They're regularly used on bicycles to pull a linked chain to turn the movement of the rider's feet into rotation of the bike's wheels. Sprockets are also used on tracked vehicles such as tanks and farming machinery. They line up with the links of a track and pull them as it rotates, allowing the vehicle to move.

Q: What is the rule for sprockets?

A: The rule of thumb is when the wear on a sprocket tooth (shown here as X) reaches 10% of the tooth width (shown here as Y), the sprocket needs to be replaced. Sprocket teeth can be surface hardened or through hardened to prolong their working life.

Q: How do I know what size sprocket I need?

A: When choosing sprockets, they need to match the chain. Several measurements, such as pitch, plate height, and thickness and roller diameter, determine chain size. In the United States, the American National Standard Institute (ANSI) governs all chain sizes.

Q: How many teeth can a sprocket have?

A: When shopping for chain sprockets it is sometimes easier to just start with the tooth-count (the number of teeth a sprocket has) ranging from 4-teeth up to 125-teeth we have the industries largest selection of sprockets!

Q: How to identify sprockets?

A: Count the number of teeth. The sprocket can be single,double(D),triple(F),and quadruple(E)strand sprockets,each respectively having single,double,triple,and quadruple sets of teeth.

Q: Is sprocket front or rear?

A: So a rear sprocket pulls the track out from underneath the tank, and a front sprocket pushes more track under the tank. Both actions cause the tank to move in the opposite direction as the tracks underneath it, which propels it forward.

Q: What does a bigger sprocket do?

A: Conversely, a lower final drive ratio will lead to slower initial acceleration, but a higher top speed. In general, a smaller front sprocket, and/or a bigger rear sprocket will translate into a higher final drive ratio, and lead to better acceleration at the cost of top speed.

Q: Why is a sprocket important?

A: Sprockets are sturdy wheels with teeth that lock onto a chain. As the sprocket spins, the teeth grab onto the chain and move other parts that interlock with the chain. This sequential series of operations allows for simple and controlled rotational movement of larger equipment and machinery.

Q: What is the most common sprocket size?

A: SPROCKET (CHAINWHEEL)
Most common sprocket size today is 25T or 28T with 23,7mm bore. There are two basic sprocket types - bolt drive and spline drive. Bolt drive sprocket is attached to the crank arm with a bolt. Spline drive sprocket is placed straight onto the 48-spline spindle and usually lasts longer.

Q: Is it better to have more or less teeth on a sprocket?

A: Adding teeth to the front and rear sprockets have opposite effects. Installing a larger countershaft sprocket creates higher gearing, while a larger rear sprocket lowers gearing. Similarly, a smaller front sprocket lowers the gearing while a smaller rear sprocket makes the gearing higher.

Q: How do I choose a sprocket size?

A: Sprocket tooth pitch is based off the corresponding chain measurement from one roller-pin center to the next roller-pin center. The inside diameter of the hole through the sprocket hub or plate. Bore size must be carefully selected to appropriately accommodate the diameter of the shaft that will run through it.

Q: What is the life expectancy of a sprocket?

A: It depends on the power of the bike, how it's ridden and the environment, and how well they are maintained, but you should get circa 25,000 miles out of a set. Rule of thumb: change both the sprockets with every second change of chain.

Q: How long should sprockets last?

A: However, sprockets tend to wear out faster than chains, so a good rule of thumb is to replace your chain and sprocket at the same time. Stock aluminum sprockets typically last about 10,000 to 30,000 kilometers depending on how hard and how often your ride. What also matters is how often you lube your chain.

Q: What size sprocket is best for speed?

A: A bigger rear sprocket/ smaller front sprocket will give you an increase in acceleration but decrease your top speed. A smaller rear sprocket/bigger front sprocket will reduce you acceleration but increase the top speed.

Q: How to identify sprockets?

Q: How does a sprocket fail?

A: Inadequate lubrication of your sprockets can lead to increased friction, and by extension, heat. This breaks down the sprocket over time and can even cause catastrophic failures! Solutions: Always ensure your sprockets are adequately lubricated.

As one of the leading sprocket manufacturers and suppliers in China, we warmly welcome you to wholesale sprocket for sale here from our factory. All customized products made in China are with high quality and competitive price.