When the shaft extension part of the planetary reducer is sealed by the skeleton oil seal, the structural form of the skeleton oil seal and the shaft extension part is that the skeleton oil seal directly contacts the shaft (the contact part between the shaft and the oil seal is hardened) and the skeleton oil seal directly contacts the oil seal bushing and then the oil seal bushing contacts the shaft (the oil seal bushing is hardened as a whole). These two types of structures have their own advantages and disadvantages. In the design of planetary reducer, both of them are adopted. Generally, if the follow-up maintenance is required to be convenient, we often use the form of oil seal bushing and shaft fitting.
After the planetary reducer operates for 10min without load, the oil seal bushing and shaft move relatively; There will be a small amount of oil leakage at the joint of oil seal and oil seal bushing after idling for about 1h; During operation, the oil seal bushing moves outward; The contact temperature between oil seal and oil seal bushing is too high.
According to the above problem analysis, in order to ensure that the matching between the oil seal bushing and the shaft in the planetary reducer meets the design and use requirements. Interference fit is required, and the minimum interference cannot be too small. At the same time, it is necessary to consider the impact of interference fit on the outer diameter of the bushing. According to the above basic principles, two implementation schemes are formulated: Scheme 1 is to match the bushing according to the size of the shaft, and Scheme 2 is to match the shaft according to the size of the bushing. Under the condition that the shaft and bushing are both finished, in order to meet the design and use requirements, Scheme I can be adopted, which can reduce the cost, and the same batch of bushings can continue to be used in the future. Subsequent products put into production shall be implemented according to Scheme II, so as to better control the size.
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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.
