Product Description
Double Pitch Conveyor Chains
| ISO Chain No. | Pitch P mm |
Roller diameter d1max mm |
Width between inner plates b1min mm |
Pin diameter d2 max mm |
Pin length | Inner plate depth h2 max mm |
Plate thickness T max mm |
Tensile strength Q min kN/lbf |
Average tensile strength Q0 kN |
Weight per meter q kg/m |
|
| Lmax mm | Lcmax mm | ||||||||||
| C210B | 31.75 | 10.16 | 9.65 | 5.08 | 19.5 | 20.9 | 14.7 | 1.7 | 22.4/5036 | 24.6 | 0.75 |
| C210BL | 19.05 | 1.21 | |||||||||
CONVEYOR CHAIN DESIGNED AND MANUFACTURED FOR THE MOST DEMXIHU (WEST LAKE) DIS. OF ENVIRONMENTS
HangZhou Star Machine Technology Co.,ltd. provides the highest quality materials and manufacturing methods to suit the most arduous of conveyor chain applications – from the transport of biomass fuels, to the recycling industry, paper & pulp, cement, steel-work, the wood industry and food processing.
Our conveyor chains, sprocket wheels and attachments are case-hardened to achieve the optimum balance between strength, durability and resistance to wear.
Our manufacturing is focused on metric pitch conveyor chains that include:
International Standards DIN 8167/ISO 1977 M series
DIN 8165/ISO 1977 FV series
SMS 1968 S series
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CHINAMFG which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.
VARIANTS DESIGN
Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.
USE
An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CHINAMFG the bar.
Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CHINAMFG flight, a system known as Thrust
WEAR
The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).
With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.
In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.
CHAIN STRENGTH
The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.
The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.
CHAIN STHangZhouRDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references for additonal information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25.
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CHINAMFG Marketing Network
7. Efficient After-Sale Service System
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CHINAMFG range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Standard or Nonstandard: | Standard |
|---|---|
| Application: | Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car, Food and Beverage Industry, Motorcycle Parts |
| Surface Treatment: | Polishing, Polishing |
| Structure: | Roller Chain, Roller Chain |
| Material: | Alloy, Alloy |
| Type: | Double Pitch Chain |
| Samples: |
US$ 0/Meter
1 Meter(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
Can double chains be used in high-load conveyor applications?
Yes, double chains are well-suited for high-load conveyor applications. Their design and construction make them capable of handling heavy loads and withstanding the stresses and forces encountered in conveyor systems that transport bulky or dense materials. Here are some reasons why double chains are suitable for high-load conveyor applications:
1. High Load Capacity: Double chains are designed with a larger pitch and thicker plates compared to standard chains. This design increases their load-carrying capacity, making them capable of handling heavier loads without deformation or failure.
2. Robust Construction: Double chains are typically made from high-quality materials, such as alloy steel, that provide excellent strength, toughness, and wear resistance. These materials ensure the chains can withstand the demanding conditions of high-load conveyor systems.
3. Tensile Strength: The construction of double chains includes a solid bushing design that enhances their tensile strength. This feature allows them to withstand the high tensile forces generated during conveying heavy materials.
4. Fatigue Resistance: The design and materials used in double chains offer good fatigue resistance, which is crucial in conveyor applications where the chains experience cyclic loading due to the continuous movement of materials.
5. Smooth Operation: Double chains provide smooth and consistent operation, reducing vibration and noise during high-load conveying. This feature contributes to a more efficient and stable material handling process.
6. Extended Service Life: Due to their robust construction and ability to handle heavy loads, double chains tend to have a longer service life in high-load conveyor applications, reducing the need for frequent replacements and maintenance.
7. Compatibility: Double chains are compatible with various conveyor systems, including bucket elevators, drag conveyors, and other types of material handling equipment, making them versatile and widely applicable.
8. Cost-Effectiveness: Despite their capabilities, double chains are often a cost-effective solution for high-load conveyor applications, offering reliable performance and reduced downtime at a reasonable price point.
In summary, double chains are an excellent choice for high-load conveyor applications due to their high load capacity, robust construction, fatigue resistance, and smooth operation. Their ability to handle heavy loads and withstand the demanding conditions of conveyor systems makes them a reliable and efficient option for material handling in various industries.
How do double chains compare to other types of chains in terms of efficiency?
Double chains offer excellent efficiency in power transmission systems compared to other types of chains. Here are some key points to consider:
- Low Friction: Double chains are designed with precision components and high-quality materials, resulting in reduced friction during operation. This low friction helps to minimize energy losses and maximize the efficiency of power transmission.
- Smooth Operation: The precise manufacturing and assembly of double chains contribute to their smooth and consistent operation. This smoothness reduces vibrations and unnecessary movement, resulting in improved efficiency.
- Minimal Stretching: Double chains have excellent tensile strength and resistance to elongation, which means they experience minimal stretching under heavy loads. This characteristic helps maintain the desired pitch distance between chain links, ensuring efficient power transmission without loss of tension or accuracy.
- Accurate Sprocket Engagement: Double chains have precise link-to-link engagement with the sprockets, allowing for accurate and efficient power transfer. This ensures minimal slippage and optimal power transmission efficiency.
- Reduced Wear and Tear: Double chains are designed to resist wear and provide long-lasting performance. With proper lubrication and maintenance, they can operate efficiently over extended periods, reducing the need for frequent replacements.
- Wide Range of Speeds: Double chains can accommodate a wide range of speeds, making them suitable for both low-speed and high-speed applications. Their efficient design allows for smooth operation and power transfer at different rotational speeds.
Compared to other types of chains, such as standard roller chains or specialty chains, double chains offer enhanced efficiency due to their low friction, precise manufacturing, and resistance to stretching. These characteristics make double chains an excellent choice for applications that require high efficiency and reliable power transmission.
Can double chains handle heavy loads and high torque applications?
Yes, double chains are specifically designed to handle heavy loads and high torque applications. They are engineered with robust construction and increased plate thickness to provide superior strength and durability.
Double chains have a higher load-carrying capacity compared to standard roller chains. The elongated link design and larger contact area with the sprockets allow them to distribute the load more evenly, reducing stress concentration and increasing the chain’s ability to withstand heavy loads.
Additionally, double chains are designed to handle high torque transmission. The increased strength and rigidity of the chain enable it to effectively transfer torque from the driving sprocket to the driven sprocket, ensuring efficient power transmission even in demanding applications.
These characteristics make double chains suitable for a wide range of heavy-duty industrial applications, including mining equipment, construction machinery, agricultural machinery, and other high-load or high-torque applications.
When selecting a double chain for heavy-load or high-torque applications, it is important to consider factors such as the specific load requirements, operating conditions, and the torque capacity of the chain. Consulting with chain manufacturers or industry experts can help you determine the appropriate double chain design and specifications for your application.
editor by CX 2024-05-09