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.

Identifying Wear or Damage in Tooth Couplings

Wear or damage in a tooth coupling can lead to performance issues and potential failures. Here are some signs to watch for and methods to identify problems:

• Abnormal Noise: Unusual noise during operation, such as rattling, grinding, or clicking, can indicate misalignment or wear in the teeth.
• Increased Vibration: Excessive vibration may suggest misalignment, worn teeth, or other issues affecting coupling performance.
• Temperature Rise: If the coupling becomes unusually hot during operation, it could indicate friction due to misalignment or damaged teeth.
• Visual Inspection: Regularly inspect the coupling for signs of wear, corrosion, pitting, or chipped teeth. Use proper lighting and magnification if needed.
• Measurement: Check tooth clearances using specialized measurement tools to identify any significant deviations from specifications.
• Runout Measurement: Measure coupling runout to detect eccentricity or misalignment that could lead to premature wear.
• Alignment Check: Use laser alignment tools to ensure proper shaft alignment, preventing undue stress on the coupling teeth.
• Lubrication Analysis: Analyze the lubricant for metal particles or signs of contamination, which could result from wear and damage.

Regular inspection, monitoring operating conditions, and addressing any signs of wear or damage promptly can help extend the life of the tooth coupling and prevent unexpected failures.

Types of Tooth Couplings for Specific Uses

There are various types of tooth couplings designed to cater to specific application requirements:

• Spur Tooth Couplings: These are the most common type, with straight teeth that transmit torque and handle misalignment.
• Helical Tooth Couplings: Helical teeth reduce noise, vibrations, and backlash while providing smooth torque transmission.
• Bevel Tooth Couplings: Ideal for applications where shafts intersect at an angle, such as in right-angle drives.
• Internal Tooth Couplings: Suitable for applications where space is limited and torque needs to be transmitted through the inside of the coupling.
• Sliding Tooth Couplings: These allow axial movement between shafts while transmitting torque, making them useful in applications with varying distances.
• Flexible Tooth Couplings: These accommodate misalignment and dampen vibrations, commonly used in pumps, compressors, and turbines.

The choice of tooth coupling type depends on factors like torque requirements, misalignment, space constraints, and specific application demands.

editor by CX 2023-11-07