Dongguan City, South Korea Taiwan Transmission Machinery Co., Ltd. hollow hollow piston rod torsion capacity compared to solid and better, bearing steel suj2, and can withstand greater external torque. And outside at the same moment, the former more than the latter, in the same material and cross-sectional area, the material savings. Hollow piston rod application, wear bearing steel, is very much in the printing machinery, woodworking machinery, fitness equipment, electric tools, textile machinery, light machinery and automated equipment has a wide range of applications. Especially in the automotive industry, it has an indispensable role, it can save material, thereby reducing the overall weight of the car. 1. Basic parameters diameter tolerance: f7-f8 surface roughness: Ra0.2-0.4 Hard Chrome Thickness: 0.01-0.015mm surface hardness: HV700-1150 straightness:. 0.05-0.10m / m2 material is used mainly seamless Steel Pipe. 3. Processing hollow piston rod is mainly for turning, it is a basic and most common method of machining, the tool they use mainly linear axis turning Dongguan Transmission Machinery Co., Ltd. of Korea and Taiwan in there Solid also has hollow, both structure and performance characteristics are different, we usually contact mostly solid linear optical axis, by contrast, bearing steel light bar, weight hollow linear axis will certainly be much lighter so that the shaft of the weight is also reduced a lot, so that the hollow part of the axis of linear axis torque transmission effect will also be relatively small. In terms of structure, hollow linear axis is mainly a combination of shaft through holes, large cylinder, cylinder, small cylinder, inside and outside the keyway keyway and other components made of steel, bearing steel, the biggest change is this place vias settings, and all have strict size requirements. Hollow linear axis is an implementation using the product, so the sliding bearings have a guiding role in the whole apparatus indispensable part. In addition, in order to meet the requirements, surface quality hollow linear optical axis, the material also be strict, try to keep the best condition. Bearing steel, Korea and Taiwan transmission machinery (certified), bearing steel provided by the Dongguan City, Transmission Machinery Co., Ltd. of Korea and Taiwan. Dongguan City, South Korea Taiwan Transmission Machinery Co., Ltd. (www.dghantai.com) (www.hantai168.com) is an industry leader in Dongguan, Guangdong, machine tool accessories, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. Transmission machinery in Korea and Taiwan led the staff warmly welcome all inquiries negotiations, Korea and Taiwan to create a better future transmission machinery.