reidl fasteners Germany reidl model reidl price

reidl 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 the two parts into a single unit. This type of connection is called a stud connection and is a detachable connection, primarily used when one of the connected parts has considerable thickness, requires a compact structure, or is frequently disassembled, making bolted 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. A press machine is used to press the hexagonal head into a pre-drilled hole in the thin plate, causing plastic deformation around the hole. The deformed material is squeezed into the undercut groove of the press-fit nut stud, securing it firmly to the thin plate and thereby forming a securely fixed internal thread on the thin plate.

reidl fastener applications

A stud refers to a cylindrical fastener with threads on both ends. It is used in large equipment as the main body where accessories need to be installed, such as sight glasses, mechanical seal seats, and gearbox frames. In these cases, a stud is used: one end is screwed into the main body, and after the accessory is installed, a nut is fitted on the other end. Studs are used when the thickness of the connected bodies is substantial. The purpose of using double-ended studs for anti-loosening: In practical operation, external loads such as vibration, load variations, and high-temperature creep of materials can reduce friction. At certain moments, the normal pressure in the thread pair disappears, resulting in zero friction, which causes the threaded connection to loosen. If this occurs repeatedly, the threaded connection will become slack and fail. Therefore, anti-loosening measures are required. Studs are applied in various operating environments and are widely used in electric power, chemical industry, oil refining, valves, railways, bridges, steel structures, automotive and motorcycle parts, machinery, boiler steel structures, tower cranes, large-span steel structures, and large buildings.

reidl fastener installation

Studs save time and costs. Structures do not require drilling, punching, thread cutting, riveting, threading, or finishing steps, continuously expanding the application potential of structural design. They support high current and smaller penetration depth. Therefore, they can be welded to very thin plates. Workpieces for stud welding must be welded from one side. All-position welding is possible; with extenders, welding can be performed 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, leakage is avoided. The joint can achieve high strength, meaning the strength of a stud-welded joint exceeds the strength of the stud itself. How to install double-ended studs with good economic efficiency: An advantage over other welding methods lies in welding power. For mass-produced workpieces, standard studs are low-cost, and stud welding offers high quality reproducibility and a lower scrap rate.

reidl fastener maintenance

During each maintenance session, newly replaced studs and other newly replaced components must be inspected. The inspection should focus on the head and guide portion of the stud. Each part of the thread must be strictly checked for cracks or indentations. The tooth profile of the stud should be examined for any changes. Check for abnormal pitch. If any abnormalities are found, the stud must not be used. A torque wrench should be used when installing the connecting rod cap. Tightening must follow specified standards; torque must not be excessive or insufficient. Attention should also be paid to selecting bolts and studs from matching manufacturers. Therefore, proper stud maintenance is required during routine operations. Problems may arise in studs due to prolonged mechanical friction. When issues occur, the engine oil pan must be removed to carefully inspect the condition of the engine bearings. Check whether the clearance between bearings is excessive. If the clearance is too large, replace them promptly.

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