Product Description

High-speed rail couplings

The Gear Transmission Division covers an area of more than 80,000 square meters. It has more than 350 sets of various equipment, including machining centers, turning centers, CNC lathes, precision grinding machines (CNC), CNC profile grinding machines, gear testing machines, three-coordinate testing machines, gearbox comprehensive performance test benches, well carburising furnaces, multi-purpose furnaces, nitriding furnaces, induction machines, quenching and pressing machines, etc. With a full range of equipment and a wide processing range, our company has ability to process and test internal and external gears with an external diameter of up to φ2500mm, a module of up to 45mm and an accuracy of up to AGMA 14-13 grade or DIN 3962 grade 3-4, forming an annual production capacity of nearly 60,000 gears and more than 15,000 sets of gearboxes. It has established a first-class domestic and world advanced gear transmission system industrialization base.

                  4400 Slave gear                                            Mechanical drive gear                                              HXD1C Traction gear
 
                                      

Detailed Photos

 

Company Profile

CRRC Xihu (West Lake) Dis. Institute Co.,Ltd is a state-own company affiliated with CHINAMFG group. Found in 1959, it locates in HangZhou city in the great ZheJiang region.Focus on R&D of critical equipment for China railway industry, it is a specialized research institution for new material and processes for locomotive and rolling stocks, as well as a high-tech manufacturer of critical parts and components for railway transportation.Currently, it has about 3,000 employees working in 6 production sites, its revenue exceeded 700 million USD in 2571.

Rail transit equipment, automobiles and new energy vehicles, ships and marine engineering equipment, aerospace vehicles, energy-saving and environmental protection equipment, wind power generation equipment, mining machinery, robot parts, construction machinery, mechanical and electrical equipment, transmission devices, instrumentation, electronic appliances, plastics R&D, design, manufacture, sales, repair, leasing, and technical services of products, metal products and parts; Mold manufacturing, sales, repair, and technical services; Metal casting, forging, and welding; Surface treatment and heat treatment; Orbital welding Engineering construction; Product testing and testing; Professional technical and operational skills training (excluding vocational certificate training recognized by the state), technical and management consulting, conference services; Rental of self-owned houses and equipment; Self-operated and agency of various commodities and technology import and export business (except for goods and technologies that are restricted by the state or prohibited from import and export); Design and produce print advertisements, and use the company’s public publications to publish domestic advertisements. 

Certifications

 

FAQ

1. How long is the product warranty period?
A: Two years.

2, how to place an order to our company?
A: After the products you need are confirmed by both parties, our company will CHINAMFG a contract with you, and we will execute the delivery and other related matters according to the contract terms.

3. How to distribute the product?
A: We generally provide FOB prices, and the freight is borne by the buyer. If the buyer has the demand, we can also provide CIF price, our company is responsible for shipping products.

4. Settlement currency?
A: We can settle in RMB, USD and Euro.

5. Return policy?
A: In case of any problem with the product, the 2 parties shall negotiate a return or exchange according to the terms and conditions of the contract.

6. After-sales problems?
A: If there is a quality problem during the warranty period, our company will answer it to the customer within 24 hours. If the problem is more serious, our company will arrive at the customer site within a week to answer it. Products beyond the warranty period we provide maintenance services, provide paid replacement parts, provide paid customer on-site service. 

7, how to buy the fragile and consumable parts in the product?
A: Our company will make a list of vulnerable and consumable parts and provide channels for purchase.

 

 

Industry Standards and Guidelines for Tooth Couplings

There are industry standards and guidelines that govern the design and use of tooth couplings. Some of these include:

• AGMA 9002-A94: This standard provides information on the selection and application of flexible couplings, including tooth couplings.
• ISO 14691: This international standard specifies methods for calculating the load capacity of tooth couplings.
• DIN 740: This German standard provides information on dimensions and requirements for tooth couplings.
• API 671: This American Petroleum Institute (API) standard specifies requirements for special purpose couplings, including tooth couplings, for use in the petroleum and natural gas industries.

These standards provide guidelines for the design, selection, installation, and maintenance of tooth couplings to ensure safe and reliable operation. Engineers and designers often refer to these standards to ensure that tooth couplings are used appropriately in various applications.

Backlash in Tooth Couplings and Its Impact on Performance

Backlash is a crucial factor in tooth couplings that affects their performance. Backlash refers to the angular movement or play between the teeth of the coupling when there is a change in the direction of loading. It is the amount by which a tooth space exceeds the thickness of the engaged tooth.

The impact of backlash on performance includes:

• Positioning Accuracy: Backlash can lead to positioning inaccuracies in systems where precise motion control is required. As the direction of loading changes, the teeth need to engage before transmitting torque, causing a delay and affecting accuracy.
• Reversal Shock: In systems with frequent changes in direction, backlash can result in a sudden impact or shock when the teeth engage, leading to vibrations and potential damage to the coupling and connected components.
• System Response: Backlash can introduce a dead zone or delay in the system response when the loading direction changes. This can affect the system’s ability to respond quickly to changes in input.
• Reduced Efficiency: Backlash causes energy loss due to the need to overcome the play between teeth during direction changes. This can reduce the overall efficiency of the system.
• Wear and Fatigue: Backlash can lead to wear and fatigue of the coupling teeth and other components due to repeated impacts during loading changes.
• Noise and Vibration: The sudden engagement of teeth can generate noise and vibration, affecting the overall smoothness of operation and potentially leading to fatigue failure.

Minimizing backlash is important for improving the performance of tooth couplings. Some couplings are designed with features to reduce or compensate for backlash, while others require precise alignment and regular maintenance to manage backlash within acceptable limits.

Proper Installation and Maintenance of Tooth Couplings

To ensure the proper function and longevity of a tooth coupling, follow these guidelines:

Installation:

• Ensure shafts are aligned within manufacturer specifications to prevent excessive loads on the coupling.
• Clean and inspect the coupling components before installation to avoid debris or contaminants.
• Use appropriate tools and methods to achieve proper fit between the coupling and the shafts.
• Follow the manufacturer’s instructions for tightening bolts or fasteners to the recommended torque.

Maintenance:

• Regularly inspect the coupling for signs of wear, such as tooth damage, corrosion, or misalignment.
• Check for any abnormal vibrations, noise, or overheating during operation, which could indicate coupling issues.
• Keep the coupling and surrounding area clean to prevent the accumulation of dirt or debris.
• Regularly lubricate the coupling as per the manufacturer’s recommendations to reduce friction and wear.
• Monitor the alignment of the connected equipment and address any misalignment promptly.
• Replace worn or damaged components promptly to avoid further damage and maintain coupling performance.

Following proper installation and maintenance practices will help maximize the efficiency and service life of the tooth coupling.

editor by CX 2023-10-10