cassese fasteners Germany cassese model cassese price

cassese fastener studs are a type of fastener used in sheet metal, thin plates, chassis, and cabinets. During connection, one end must be screwed into a part with an internal threaded hole, while the other end passes through a part with a through-hole, and then a nut is tightened, firmly connecting these two parts into a single unit. This type of connection is called a stud connection and is also a detachable connection, mainly used when one of the connected parts has a large thickness, requires a compact structure, or is frequently disassembled, making bolt connections unsuitable. The press-fit nut stud has a hexagonal shape at one end and a cylindrical shape at the other, with an undercut groove between the hexagonal section and the cylindrical section. Its interior features internal threads. By pressing the hexagonal head into a pre-drilled hole in the thin plate using a press, the surrounding area of the hole undergoes plastic deformation, and the deformed part is squeezed into the undercut groove of the press-fit nut stud, securing it tightly to the thin plate and thereby forming an effectively fixed internal thread on the thin plate.

cassese fastener applications

A stud refers to a cylindrical fastener with threads on both ends. It is used in main bodies of large equipment where accessories need to be installed, such as sight glasses, mechanical seal seats, gearbox frames, etc. In these cases, a stud is used, with one end screwed into the main body and the other end fitted with a nut after the accessory is installed. Studs are used when the thickness of the connected bodies is substantial, and double-ended bolts are used for anti-loosening purposes. In actual work, external loads such as vibration, changes, and high-temperature creep of materials can reduce friction, causing the normal pressure in the thread pair to disappear momentarily, resulting in zero friction and loosening of the threaded connection. If this occurs repeatedly, the threaded connection will become loose and fail. Therefore, anti-loosening measures must be taken. Studs are applied in different usage environments and are widely used in power, chemical, oil refining, valves, railways, bridges, steel structures, automotive and motorcycle parts, machinery, boiler steel structures, tower cranes, large-span steel structures, and large buildings.

cassese fastener installation

Studs save time and cost as all structures do not require drilling, punching, threading, riveting, screwing, and finishing steps, continuously expanding the application potential of structural design, with high current and smaller melt depth. Therefore, they can be welded onto very thin plates. The workpiece for stud welding must be welded from one side. It can be welded in all positions, and with the help of an extender, it can be welded on restricted vertical partitions. Due to the short welding time and minimal post-weld deformation, no finishing is required. Since the welded structure does not require drilling, there will be no leakage. The joint can achieve high strength, meaning the joint strength of stud welding is greater than the strength of the stud itself. How to install double-ended bolts with good economic efficiency. Compared to other welding methods, the advantage lies in welding power. For mass-produced workpieces, standard studs are low-cost, and stud welding has a high quality reproduction rate and a lower defect rate.

cassese fastener maintenance

During each maintenance, newly replaced studs and other newly replaced components must be inspected. The inspection should focus on the head and guiding part of the stud, strictly checking each part of the thread for cracks or indentations, and examining the tooth shape of the stud for any changes. Check if the pitch is abnormal; if any abnormalities are found, the stud must not be used. When installing the connecting rod cover, a torque wrench should be used. It must be tightened according to specified standards, with neither excessive nor insufficient torque. Also, pay attention to selecting matching manufacturer's bolts and studs. Therefore, regular maintenance of studs is necessary. Under long-term mechanical friction, studs may develop issues. When problems occur, the engine oil pan should be removed, and the condition of the engine bearings should be carefully checked. Check if the gap between the bearings is too large; if so, replace them promptly.

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