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TAB series hydraulic tightening bolts

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Product description
TAB series hydraulic tightening bolt is a kind of tightening bolt with expandable intermediate cone sleeve. Containing higher technical added value, it is a technological change to the traditional tight-fitting (hinge) bolts, and has been widely used in various large and medium-sized military and civilian ships and many fields in the machinery industry. The products meet the requirements of the world's major classification societies such as "CCS", "LR", "GL", "RINA", "BV", "ABS" and have obtained corresponding certificates.
When the hydraulic tightening bolt is installed, the bolt is axially stretched by the hydraulic tensioner, so that the middle taper sleeve is expanded into an interference fit in the screw hole, and then the nuts at both ends are pre-tightened and tightened; the hydraulic tensioner is used first when removing Loosen the nut, and then use the hydraulic expansion method to loosen the bolt, or use a hydraulic tensioner to loosen the bolt from the other end.
   Hydraulic tightening bolts are installed and dismantled using a special supporting assembly and disassembly tool-hydraulic tensioner, which is simple and fast. After disassembly, the mating parts maintain the original surface roughness and can be used repeatedly.
   Bolts rely on the shear force in the shaft to absorb most of the torque. A small part of the torque is borne by the friction between the flanges caused by the bolt pre-tightening load. The pre-tightened nut does not need to be locked separately.
   This product does not require precise tolerances for the screw holes and the matching grinding of the bolts, which greatly facilitates the processing of bolts and screw holes, and the bolts are completely interchangeable. The gap between the bolt and the screw hole varies from 0.04-0.10mm depending on the bolt diameter, so it can be manually pushed in and repeatedly removed.
  TAB series products, complete specifications. When the structure size is different, the supply can be negotiated with the user.
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Product Details

Time of issue:2020-11-24 17:29:53

Jiangsu Antarctic Machinery Co., Ltd. has a 50-year history of development. It is a key high-tech enterprise in the National Torch Program, a high-tech enterprise in Jiangsu Province and a key enterprise in the ship supporting industry in Jiangsu Province. The factory is located in Taixing High-tech Industrial Park and Taixing Dasheng Industrial Park. It covers an area of ​​250,000 square meters and a building area of ​​150,000 square meters. It has more than 450 sets of cold and hot processing production equipment, including large-scale and high-precision There are more than 230 sets of equipment and total assets of 500 million yuan.


The company mainly produces and operates marine sewage treatment equipment, ship ballast water management systems, inland water vessel domestic sewage treatment equipment, bilge water separators, marine pressure water tanks, hot water tanks, air conditioning, refrigeration equipment, and shock absorption Noise reduction floating raft device, seawater filter, intermediate bearing, hydraulic bolt, hydraulic nut, hydraulic coupling, integral stern tube, shaft and rudder assembly, and undertake large-scale machining operations. The products are mainly sold to major and Chinese shipyards across the country, and are widely selected by the "Antarctic" Great Wall Station, Zhongshan Station, "Polar" survey ship, Yuanwang survey ship and other national key ships and national defense projects, and are exported to the United States, Russia, More than 20 countries and regions including Germany, Norway, Brazil, Thailand, Singapore, Malaysia and Japan. The company has a sound sales and service system. It has sales companies, offices and service outlets along the rivers and coastal areas in China, and has established maintenance outlets in the United States, Germany, Italy, Greece, Singapore, Malaysia and other regions.

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