Japan's NSK Seiko Co., Ltd. has developed a tapered roller bearing produced in China for hydraulic excavator travel reducers in the face of emerging markets. Compared with previous products, it has higher reliability. This product is to meet the needs of emerging markets. It is purchased locally in China and produced locally. The price competitiveness and high quality coexist, and it can achieve stable supply with short delivery time. Whenever this product is put into the market, NSK will expand sales in the construction machinery market in emerging markets. [Development background] Tapered roller bearings for travel reducers of construction machinery such as hydraulic excavators are used in harsh environments such as heavy loads and impact loads. Especially in emerging market countries, many construction machinery operate continuously for a long time. It can be used under harsh conditions such as walking on long-distance bad roads. In addition, in emerging market countries, the accuracy of the peripheral parts of the bearing is low, and unique problems such as improper use of the bearing by the operator will also occur. In response to this problem, NSK uses local materials to design bearings suitable for harsh operating environments in emerging markets, and performs high-precision processing and production in Chinese factories with the latest production equipment. Make the product have higher quality and price competitiveness, and realize the supply of short delivery time. [Product Features] 1. The most suitable convex shape (high reliability, long life) in the harsh operating environment of emerging markets, in order to prevent the service life of the bearing from being reduced, the outer ring of the bearing, the raceway surface of the inner ring and the roller The optimal convexity design of the rolling surface of the child can suppress the occurrence of edge stress. In addition, bearing inclination due to poor installation is also tolerated. Furthermore, using the latest processing equipment, processing of crowns suitable for all conditions has been realized. 2. Improved impact resistance (reduce the stress on the shoulder of the large block). In emerging markets, the travel reducer will bear a large impact load when walking on bad roads. If excessive stress is generated on the large shoulder of the inner ring, the large shoulder will be damaged and the equipment will not be able to operate. For this reason, the shape of the end surface of the roller is optimized, and the stress of the large shoulder can be reduced by 10%. 3. On-site procurement of all components, on-site production uses high-quality on-site materials, and uses the latest equipment to produce bearings that can meet the use requirements of construction machinery travel reducers in emerging markets. 【Effect of the product】This product pursues high durability and high reliability in the harsh use environment of emerging markets. Through current production, it improves price competitiveness and shortens delivery time, and will expand sales to emerging markets.
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