Tag Archives: wholesale roller chain conveyor chain

China high quality Wholesale Factory C2050 C2060 Industrial All Kinds of Transmission Conveyor Roller Chain

Product Description

Product

Standard Double Pitch Roller chain

Material

40Mn steel,304 stainless steel, 316 stainless steel and 201 stainless steel.

Types

Standard chains and special chains, such as A or B series chains, roller chains, driving chains, conveyor chains, hoisting chains, agricultural chains, sprockets, gears, wheels and so on.

Series

 A series(12.7-50.8mm pitches),B series (9.525-50.8mm pitches)and the heavy series.

Short pitch precision roller chain

Simplex Roller Chains&Bushing Chains: 

04C-1,06C-1,085-1,08A-1,10A-1,12A-1,16A-1,20A-1,24A-1,28A-1,32A-1,36A-1,40A-1,48A-1
Duplex Roller Chains&Bushing Chains:

04C-2,06C-2,085-2,08A-2,10A-2,12A-2,16A-2,20A-2,24A-2,28A-2,32A-2,36A-2,40A-2,48A-2
Triplex Roller Chains&Bushing Chains:

04C-3,06C-2,085-3,08A-3,10A-3,12A-3,16A-3,20A-3,24A-3,28A-3,32A-3,36A-3,40A-3,48A-3

Chain link type

Standard links (without attachment) and non-standard links (with attachment).

 

A1: One-side,one hole cranked attachments.
A2: One-side,two holes cranked attachments.
K1: Both-side,one hole cranked attachments.
K2: Both-side,two hole cranked attachments.
D1: One-side,an extended pin on every outer link.
D3: One-side,two extended pin on every outer link.

Our Products Advantage

1. Every step from production order to the packing process has a strict quality inspection.
2. We have standard roller chain with 1.5 CHINAMFG (DIN. ANSI.); Non-standard roller chain (customized acording to customer drawings).
3. Export products with high quality and low price.
4.We have a good service before and after-sale.

1.Fast delivery: Standard products can be delivered in as fast as 20 days
2.Good service: timely reply, prompt quotation, responsible for the product
3.High cost performance: can maintain price stability for a certain period of time, bringing greater profits to customers
4.Good quality: production and testing have corresponding supervision to ensure product quality and get high praise from customers
5.OEM service: products can be customized according to drawings and requirements

We are responsible for the ordered products. We are very confident in the products we produce. Of course, if you have any problems after receiving the goods, you can contact us directly. We will confirm and negotiate in time to solve your difficulties.


 

Standard or Nonstandard: Standard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Food Machinery, Mining Equipment, Agricultural Machinery
Surface Treatment: Oil Blooming
Structure: Roller Chain
Material: Alloy
Type: Double Pitch Chain
Samples:
US$ 35/kg
1 kg(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

conveyor

Can a conveyor chain be used in high-load applications?

Yes, a conveyor chain can be used in high-load applications. Conveyor chains are designed to withstand heavy loads and provide reliable and efficient material handling in various industries. Here’s a detailed explanation:

– Robust Construction:

A conveyor chain for high-load applications is typically constructed using durable materials such as alloy steel or stainless steel. These chains are designed to withstand the forces and stresses imposed by heavy loads without deformation or failure.

– High Load Capacity:

Conveyor chains for high-load applications are designed with larger and stronger components, including thicker plates, larger pins, and stronger attachments. These enhancements allow the chain to handle heavier loads and distribute the weight evenly across the chain’s links and rollers.

– Proper Selection:

When using a conveyor chain in high-load applications, it is crucial to select the appropriate chain type and size based on the specific load requirements. Factors such as the weight of the conveyed material, the conveyor speed, and the operating conditions should be considered during the selection process.

– Lubrication and Maintenance:

In high-load applications, proper lubrication and regular maintenance of the conveyor chain are essential. Adequate lubrication reduces friction and wear, ensuring smooth operation and extending the chain’s service life. Regular inspections and maintenance routines help identify any issues or wear that may affect the chain’s performance.

– Application-Specific Chains:

In some cases, specialized conveyor chains, such as forged link chains or roller chains, are used to handle extremely heavy loads. These chains offer enhanced strength and durability, making them suitable for demanding high-load applications.

Overall, a properly selected and maintained conveyor chain can reliably handle high-load applications, providing efficient and continuous material handling in industries such as mining, construction, automotive, and heavy manufacturing.

conveyor

How does lubrication affect the performance of a conveyor chain?

Lubrication plays a crucial role in the performance and longevity of a conveyor chain. Proper lubrication helps to reduce friction, wear, and heat generation, ensuring smooth operation and minimizing the risk of premature failure. Here’s how lubrication affects the performance of a conveyor chain:

1. Friction Reduction: Lubrication forms a thin film between the chain components, reducing friction between metal surfaces. This reduces the energy required for operation, minimizes heat generation, and prevents excessive wear and tear.

2. Wear Prevention: Lubrication forms a protective layer on the chain components, preventing direct metal-to-metal contact. This helps to reduce wear and extend the service life of the chain.

3. Corrosion Protection: Lubricants often contain anti-corrosion additives that protect the chain from rust and oxidation. This is particularly important in environments with high humidity or exposure to corrosive substances.

4. Noise Reduction: Proper lubrication reduces the noise generated during chain operation by minimizing friction and metal-to-metal contact. This can contribute to a quieter and more comfortable working environment.

5. Temperature Control: Lubrication helps to dissipate heat generated during chain operation, preventing excessive temperature rise. This is crucial in high-speed or heavy-duty applications where heat can lead to accelerated wear and reduced chain performance.

6. Maintenance and Service Life: Regular lubrication and proper lubricant selection are essential for maintaining the chain’s performance and extending its service life. Adequate lubrication reduces the need for frequent maintenance, minimizes downtime, and lowers overall operating costs.

It’s important to follow the manufacturer’s recommendations for lubrication frequency and use the appropriate lubricant for the conveyor chain. Regular inspections and maintenance checks should also be conducted to ensure proper lubrication levels and address any issues promptly. Proper lubrication practices will enhance the performance, reliability, and durability of the conveyor chain system.

conveyor

How does a conveyor chain compare to other types of conveyor systems?

Conveyor chains are one of the common types of conveyor systems used in various industries. They offer specific advantages and characteristics that differentiate them from other types of conveyor systems.

1. Versatility: Conveyor chains are highly versatile and can be used for a wide range of applications, including horizontal, inclined, and vertical conveying. They can handle various types of materials, from bulk solids to individual items.

2. High Load Capacity: Conveyor chains are known for their high load-carrying capacity. They are designed to handle heavy loads and can be used in applications where other conveyor systems may not be suitable.

3. Durability: Conveyor chains are built to withstand harsh operating conditions and heavy-duty use. They are made from strong and durable materials, such as steel or alloy, that can withstand abrasion, impact, and wear.

4. Flexibility: Conveyor chains offer flexibility in terms of layout and design. They can be configured to accommodate complex conveyor paths, curves, and multiple discharge points, allowing for efficient material flow and system customization.

5. Cost-Effective: Conveyor chains often provide a cost-effective solution for material handling compared to other conveyor systems. They have a relatively low initial cost, require less maintenance, and have a longer service life.

However, it’s important to note that conveyor chains may not be suitable for every application. Other types of conveyor systems, such as belt conveyors, screw conveyors, or pneumatic conveyors, may offer specific advantages depending on the application requirements, material characteristics, or environmental factors.

Ultimately, the selection of the appropriate conveyor system depends on factors such as load capacity, material properties, layout constraints, cost considerations, and specific application needs.

China high quality Wholesale Factory C2050 C2060 Industrial All Kinds of Transmission Conveyor Roller Chain  China high quality Wholesale Factory C2050 C2060 Industrial All Kinds of Transmission Conveyor Roller Chain
editor by CX 2023-10-10

China Good quality Wholesale Factory C2050 C2060 Industrial All Kinds of Transmission Conveyor Roller Chain

Product Description

Product

Standard Double Pitch Roller chain

Material

40Mn steel,304 stainless steel, 316 stainless steel and 201 stainless steel.

Types

Standard chains and special chains, such as A or B series chains, roller chains, driving chains, conveyor chains, hoisting chains, agricultural chains, sprockets, gears, wheels and so on.

Series

 A series(12.7-50.8mm pitches),B series (9.525-50.8mm pitches)and the heavy series.

Short pitch precision roller chain

Simplex Roller Chains&Bushing Chains: 

04C-1,06C-1,085-1,08A-1,10A-1,12A-1,16A-1,20A-1,24A-1,28A-1,32A-1,36A-1,40A-1,48A-1
Duplex Roller Chains&Bushing Chains:

04C-2,06C-2,085-2,08A-2,10A-2,12A-2,16A-2,20A-2,24A-2,28A-2,32A-2,36A-2,40A-2,48A-2
Triplex Roller Chains&Bushing Chains:

04C-3,06C-2,085-3,08A-3,10A-3,12A-3,16A-3,20A-3,24A-3,28A-3,32A-3,36A-3,40A-3,48A-3

Chain link type

Standard links (without attachment) and non-standard links (with attachment).

 

A1: One-side,one hole cranked attachments.
A2: One-side,two holes cranked attachments.
K1: Both-side,one hole cranked attachments.
K2: Both-side,two hole cranked attachments.
D1: One-side,an extended pin on every outer link.
D3: One-side,two extended pin on every outer link.

Our Products Advantage

1. Every step from production order to the packing process has a strict quality inspection.
2. We have standard roller chain with 1.5 CZPT (DIN. ANSI.); Non-standard roller chain (customized acording to customer drawings).
3. Export products with high quality and low price.
4.We have a good service before and after-sale.

1.Fast delivery: Standard products can be delivered in as fast as 20 days
2.Good service: timely reply, prompt quotation, responsible for the product
3.High cost performance: can maintain price stability for a certain period of time, bringing greater profits to customers
4.Good quality: production and testing have corresponding supervision to ensure product quality and get high praise from customers
5.OEM service: products can be customized according to drawings and requirements

We are responsible for the ordered products. We are very confident in the products we produce. Of course, if you have any problems after receiving the goods, you can contact us directly. We will confirm and negotiate in time to solve your difficulties.


 

Standard or Nonstandard: Standard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Food Machinery, Mining Equipment, Agricultural Machinery
Surface Treatment: Oil Blooming
Structure: Roller Chain
Material: Alloy
Type: Double Pitch Chain
Samples:
US$ 35/kg
1 kg(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

conveyor

Can a conveyor chain be used in automotive assembly lines?

Yes, a conveyor chain can be effectively used in automotive assembly lines. Here are the reasons why:

1. Efficient Material Handling:

– Conveyor chains provide a reliable and efficient means of transporting automotive components and parts along the assembly line. They can handle heavy loads and withstand the demanding requirements of automotive manufacturing.

2. Versatility:

– Conveyor chains offer versatility in terms of design and configuration. They can be customized to accommodate various assembly processes, such as body welding, painting, assembly, and final inspection.

3. Precise Positioning:

– Conveyor chains allow precise positioning and synchronization of automotive components, ensuring accurate assembly and alignment during the production process. This helps maintain consistent quality and reduces errors.

4. Automation Integration:

– Conveyor chains can be easily integrated with automation systems in automotive assembly lines. They can work in conjunction with robotic arms, vision systems, and other automated equipment to optimize the production process and improve efficiency.

5. Assembly Line Flexibility:

– Conveyor chains provide flexibility in terms of line configuration and layout. They can be designed to accommodate different assembly line layouts, including straight sections, curves, inclines, and declines, to meet the specific requirements of automotive assembly processes.

6. Space Optimization:

– Conveyor chains help optimize space utilization in automotive assembly plants. They can be designed to navigate around existing equipment and infrastructure, making efficient use of available floor space.

7. Safety:

– Conveyor chains are designed with safety features to protect operators and prevent accidents. Emergency stop controls, guarding, and interlocking mechanisms ensure the safe operation of the assembly line.

8. Increased Production Speed:

– By using conveyor chains, automotive assembly lines can achieve higher production speeds, allowing for faster manufacturing cycles and increased output.

Overall, conveyor chains play a crucial role in enhancing the efficiency, productivity, and safety of automotive assembly lines, contributing to the smooth and streamlined production of vehicles.

conveyor

How do you select the appropriate lubricant for a conveyor chain?

Selecting the right lubricant is crucial for maintaining the performance and longevity of a conveyor chain. Here are the key factors to consider when choosing a lubricant:

1. Chain Type and Material: Different conveyor chains may have specific requirements for lubrication based on their construction materials and design. Consult the manufacturer’s recommendations or specifications to determine the lubricant compatibility.

2. Operating Conditions: Consider the operating environment, such as temperature, humidity, and presence of contaminants. For high-temperature applications, choose a lubricant with a higher temperature tolerance. In wet or dusty environments, opt for lubricants that offer excellent resistance to water washout and provide effective protection against contaminants.

3. Load and Speed: Evaluate the load capacity and speed of the conveyor chain. Higher loads and speeds may require lubricants with better film strength and anti-wear properties to reduce friction and prevent premature wear.

4. Lubrication Method: Determine the lubrication method that will be used for the conveyor chain. Lubricants can be applied through drip systems, brushes, spray nozzles, or automatic lubrication systems. Consider the viscosity and consistency of the lubricant to ensure proper application and distribution.

5. Food-Grade Requirements: In food processing or pharmaceutical applications, where direct contact with the product may occur, it’s essential to use food-grade lubricants that meet industry regulations and requirements for safety and hygiene.

6. Maintenance Schedule: Consider the desired maintenance intervals and the lubricant’s longevity. Some lubricants may require more frequent reapplication, while others provide longer-lasting lubrication.

7. Compatibility with Other Materials: Take into account the compatibility of the lubricant with other materials in the conveyor system, such as seals, gaskets, and paints. Ensure that the lubricant does not cause any adverse effects on these components.

It is recommended to consult with lubricant manufacturers or industry experts to select the most suitable lubricant for your specific conveyor chain application. They can provide guidance based on their expertise and knowledge of lubricant formulations and performance characteristics.

conveyor

What safety precautions should be followed when working with conveyor chains?

Working with conveyor chains involves potential hazards, and it is essential to follow proper safety precautions to ensure the well-being of workers and prevent accidents. Here are some important safety measures to consider:

  • Proper Training: Ensure that workers operating or maintaining conveyor chains receive proper training on safe practices, including chain handling, maintenance procedures, and emergency protocols.
  • Personal Protective Equipment (PPE): Workers should wear appropriate PPE, such as safety glasses, gloves, and steel-toed shoes, to protect themselves from potential hazards, including flying debris, pinch points, or entanglement.
  • Lockout/Tagout: Before performing any maintenance or repair tasks on conveyor chains, follow lockout/tagout procedures to isolate and de-energize the equipment to prevent accidental startup or release of stored energy.
  • Guarding: Ensure that conveyor chains are adequately guarded to prevent access to moving parts, such as pinch points and rotating sprockets. Guards should be securely in place and not interfere with the chain’s operation.
  • Housekeeping: Keep the work area clean and free of debris, tools, or other objects that could cause tripping hazards or interfere with the operation of the conveyor chain.
  • Regular Inspections: Regularly inspect the conveyor chains for any signs of wear, damage, or misalignment. Address any issues promptly to prevent potential safety hazards.
  • Safe Loading and Unloading: When loading or unloading materials onto the conveyor, follow safe lifting techniques and ensure the load is evenly distributed to prevent overloading or imbalance.
  • Emergency Stop Devices: Install and clearly mark emergency stop devices along the conveyor system to enable immediate shutdown in case of an emergency or hazardous situation.
  • Clear Communication: Establish clear communication protocols, including signals or signs, to ensure effective communication between workers operating different sections of the conveyor system.

These safety precautions are general guidelines, and it’s important to consult and adhere to specific safety regulations and guidelines provided by the equipment manufacturer and relevant safety authorities. Regular safety training, awareness, and a proactive safety culture are crucial in maintaining a safe working environment when working with conveyor chains.

China Good quality Wholesale Factory C2050 C2060 Industrial All Kinds of Transmission Conveyor Roller Chain  China Good quality Wholesale Factory C2050 C2060 Industrial All Kinds of Transmission Conveyor Roller Chain
editor by CX 2023-09-13

China Hot selling Factory Wholesale Hollow Pin Motorcycles Conveyor Roller Chain Suppliers near me shop

Merchandise Description

Driving chain is a chain primarily utilized to transmit electricity.The composition of the driving chain is composed of an internal link and an outer website link. It is composed of 6 modest parts: interior chain plate, outer chain plate, pin shaft, sleeve and roller,Connecting Pin. Roller chain is a variety of driving chainThe chain does not need to have a lot of stress, so the load on the shaft and bearing is modest there is no slip, reliable transmission, powerful overload capability, and it can function well at reduced pace and hefty load.
ZHangZhoug Xihu (West Lake) Dis. Shengtuo Hardware Manufacturing Co., Ltd. was initially named Xihu (West Lake) Dis. CZPT Chain Manufacturing unit. The factory was founded in November 2000. With the support of buyers from all walks of lifestyle and the company’s efforts, a new Xihu (West Lake) Dis. Shengtuo Hardware Producing Co., Ltd. was established in January 2006. It covers an spot of twenty,000 sq. meters and is situated in Xihu (West Lake) Dis., a CZPT sizzling spring town with gorgeous mountains and very clear waters, the hometown of fluorite. Xihu (West Lake) Dis. Shengtuo Components Production Co., Ltd. is a personal restricted legal responsibility firm integrating creation, processing, distribution and wholesale. Chains are the primary merchandise of Xihu (West Lake) Dis. Shengtuo Components Producing Co., Ltd. Xihu (West Lake) Dis. Shengtuo Components Manufacturing Co., Ltd. is an company accredited and registered by appropriate point out departments. Xihu (West Lake) Dis. Shengtuo Components Manufacturing Co., Ltd. has recognized long-phrase cooperative relations with several enterprises with sturdy power, affordable costs and superb providers. Xihu (West Lake) Dis. Shengtuo Components Producing Co., Ltd. sincerely welcomes all walks of daily life to go to, examine and negotiate enterprise.Q1: How do you make our organization prolonged-phrase and great romantic relationship?
A:1. We keep excellent top quality and competitive value to make certain our customers reward 2. We regard every consumer as our good friend and we sincerely do company and make buddies with them,no matter in which they come from.
Q2: Can I go to visit your factory?
A: Of course, warmly welcome to pay a visit to us any time!
Q3:What is the making procedure?
A:Production method like uncooked content chopping, equipment processing, grinding, equipment cleansing, assemble, cleaning, stoving, oil coating, include urgent, screening, bundle.
This fall:How to manage the products good quality?
A:Combining innovative tools and rigid management, we supply high standard and quality bearings for our clients all in excess of the planet.
Q5:How can I get much more details about your solution?
A:You can send out us an electronic mail or ask our on the web associates and we can send you the newest catalog and cost checklist.
Q6:How lengthy for producing once we place order?
A:It’s about 7-fifteen times soon after payment or disposit.

Different varieties of drive chains

There are numerous different kinds of push chains. You should be able to differentiate between roller chains, cast rivetless chains, double chains, flat-leading chains, and helical chains by the terms utilised. This write-up will supply info on the different kinds of chains. Then, you can choose the right one particular in accordance to your needs. If you have not bought a chain however, go through this post to get started. It will also give details on the pros and cons of every kind.

roller chain

There are several differences among travel chains and roller chains, but in essence, the two are functionally comparable. The decision of which sort to use relies upon largely on the sort of surroundings it will be exposed to. Even though roller chains are appropriate for thoroughly clean indoor environments, they are not extremely forgiving when it arrives to rubbing in opposition to the rails. Following are the principal variances in between a drive chain and a roller chain. Using the right travel chain is important for a sleek and effective working device.
Roller chain travel chains come in many various weights and tensile strengths. For light-weight-responsibility apps, use a smaller sized pitch chain. For hefty-obligation apps, use larger pitch chains. The style simplicity of these chains can make them ideal for a assortment of apps. Even though they are fantastic for a assortment of purposes, the toughness of these chains makes them excellent for a variety of apps. Some of the major uses of roller chain drive chains are outlined underneath.
When changing the generate chain, be positive to stick to the security suggestions. The most important issue to keep in mind is not to spot the chain on a soiled floor as it might lead to stretch or hurt. Right after removing the chain from the sprocket, utilize the calculated load specified by ANSI to it. If the load exceeds this value, the chain may possibly bend. A appropriate load for measuring a push chain must be at the very least six links.
While roller chains are normally produced of carbon steel, some are created of stainless metal and are utilised in foodstuff processing machinery. In these environments, the chain could be created of stainless steel for lubrication. Brass and nylon are also occasionally utilized to meet up with these specifications. Irrespective of the software, nevertheless, selecting the correct generate chain is essential to the achievement of a roller chain equipment. It is critical to maintain the proper harmony in between the roller chain and the equipment.
To correctly use a roller chain, initial figure out the dimension of the sprocket utilized for the push. The dimension of the chain must be more compact than the smallest sprocket to avert tooth interference and offer ample winding on the scaled-down sprocket. A great practice is to select a drive chain with a center length of thirty to 50 instances the chain pitch. The longest feasible heart-to-heart distance is about 80 instances the chain pitch but is not advised for high-pace applications.

Fall solid rivetless chain

Drop-solid rivetless generate chains are manufactured of drop-cast metal parts. Their proportions are suitable for strength and lightweight. Solid rivetless chains are generally divided into 3 kinds. Every of these sorts has its own set of crucial specifications. Key subjects incorporate least final tensile energy, chain length tolerances, and hyperlink dimensions. Read on to learn more about each type and its utilizes.
One particular of the principal features of forged rivetless chains is that, in spite of their relatively lower price tag, they are created to be really sturdy. The quality of a cast chain is dependent on the structure and layout of the chain. The maker of this variety of travel chain is CZPT, which has a massive stock of these chains. The chain is proof tested following assembly and comes with a two-year parts substitution guarantee.
Forged rivetless chains are obtainable in a assortment of pitch sizes and strength grades. They are manufactured of cast manganese or alloy metal and have an regular power of 24,000 to 300,000 kilos. These chains are suited for automotive, conveyor, and materials handling as well as meat packaging, sugar processing, and metal mill programs. They are also commonly utilised in conveying methods. To make certain quality and efficiency, manufacturers offer you a range of solid chains.
CZPT delivers forged CZPT travel chains for exhaustion-totally free procedure. The chain contains a sound one particular-piece forged drive pawl for ideal longevity. Chains are available in Determine 8 and in D-form types. For a lot more details, remember to speak to CZPT immediately. Personalized Fall-Cast rivetless push chains can be purchased. Companies also supply personalized chains for particular software wants.

double chain

Duplex generate chains have two sets of rollers alternatively of 1, making twice the electricity. Double chain roller chains have pins and roller bearings, although triple chain chains have an additional row of plates to accommodate the three sprockets. They are typically interchangeable with every other. They are obtainable for US, British isles, and ISO specifications. They are created of carbon steel, stainless steel, and nickel or nickel-plated.

flat top chain

Flat-top drive chains are perfect for curved or straight tracks and come in several various types and thicknesses. These chains are highly resistant to wear and are usually manufactured of steel, stainless steel, or plastic. CZPT manufactures unique manufacturers of flat-top chains with higher use resistance and superb noise reduction. In addition to being versatile, flat-leading chains can be utilised in a selection of industrial apps.
There are two major sorts of CZPT chains: solid leading or raised rib. 1 piece is formed from a solitary unit hyperlink and the other has roller base hyperlinks for added toughness. The two-piece chain combines flat tabletop backlinks and a roller bottom chain for added power. These chains are obtainable in widths up to twenty toes and are obtainable in a range of widths. These chains are obtainable in stainless metal, forged iron, or plastic.
The hinge pin is one more crucial portion of the flat top chain technique. Help chain plate to guarantee easy conveying. The hinges are available in one hinge pin and double hinge pin designs. Common hinge pins are made for straight, slender-width chainplates double hinge pins are made for for a longer time, heavier goods. The hinge pins also arrive in numerous distinct resources, which includes aluminum and galvanized steel. This permits for customization based mostly on machine style, functioning conditions, and travel method.
Regardless of whether your flat-best chain conveyor program is big or little, a substantial-quality flat-top chain will get the job done. With their reduced routine maintenance and lower maintenance design and style, these chains are straightforward to thoroughly clean and maintain. They can accommodate workpiece pallets of a variety of dimensions, and their flexibility makes them perfect for many distinct purposes. They can also be extremely customized for various industries. So if you need to have an sector-certain conveyor, then a flat-prime travel chain is the way to go.

China Hot selling Factory Wholesale Hollow Pin Motorcycles Conveyor Roller Chain Suppliers     near me shop