Twelve precision grades are specified, followed by numbers 1, 2, 3, ... 12 representing the precision grades from high to low, the most commonly used are 5 to 9 precision grades.In addition, according to the requirements of motion accuracy, transmission stability and load distribution uniformity, the public services of each precision level are divided into three groups in turn, the first and second service groups and the III public service group.
The accuracy grade of the gear should be determined according to the purpose of the transmission, the conditions of use, the efficiency and peripheral speed of the transmission, and other economic and technical indicators.
5th gear is fine.
Processing method: Processing on a precision gear processing machine with small periodic error.The tooth flanks are finally fine ground, and then large gears are ground or ground with fine hobbing after grinding or shaving.The tooth surface roughness reaches 0.4-0.8.
Scope of application: gears for fine indexing mechanisms; high-speed gears with high requirements for smoothness and noise; gears for high-speed turbines.
Grade 7 gears are a relatively high precision grade.
Processing method: processing on high precision gear machine.Non-hardened tooth surfaces are cut with high-precision tools; hardened gears require finishing (grinding, shaving, grinding, etc.).The tooth surface roughness reaches 1.6.
Range of use: gears with high speed, small load or reverse rotation; feed gears for machine tools, gears with matching motion requirements; medium speed gears; medium speed gears with herringbone teeth for aircraft gears.
Our products are mainly exported to Japan, the United States, Germany, Southeast Asia and other countries and regions. Our customers include many OEM customers specializing in construction machinery. We have partnered with several of the Fortune 500 companies to become one of their major foundry suppliers in China.
How to provide goods?
Usually we will ship the goods to the sea. The factory is only 460 kilometers away from the port. It is very convenient and convenient to transport the goods to any other country. Of course, if your cargo is very urgent, Ningbo Airport and Shanghai Airport are also nearby.
What is the payment term?
When we provide you with a quotation, we will negotiate with you: EXW, FCA, FOB, CIF, CRF, DAP Etc. For mass production, you need to pay 30% of the deposit before production and 70% of the balance before shipment. Our most common way is T/T.
How to ensure the quality of your products?
First, we will check after each process. For finished products, according to customer requirements and international standards.
How many employees does your company have? What is the relationship between technicians?
We now have more than 180 employees, including 36 engineers and 28 QCs.
What is the ability of your company?
We have a number of production lines with a monthly production capacity of 1,600 units and an annual production capacity of 20,000 units.
