繁體:壓緊螺母
压紧螺母是铝制电缆接头组件中的关键部件,用于固定和密封进入电气外壳的电缆。
压紧螺母是铝制电缆接头组件中的关键部件,用于固定和密封进入电气外壳的电缆。这种圆柱形螺母具有内螺纹,与接头主体啮合,并带有锥形压缩面,拧紧时迫使密封圈或垫圈紧贴电缆护套。它通过围绕电缆圆周施加均匀的径向压力,形成防水、防尘和应力消除的密封,同时通过正确接地保持电气连续性。 压紧螺母基于机械压缩原理工作。当拧到电缆接头主体上并拧紧时,其内部锥形表面迫使压缩环(通常为氯丁橡胶或类似弹性体)径向向内变形,紧贴电缆护套。这同时实现三个功能:1)通过密封元件的径向压缩实现环境密封;2)通过摩擦握持实现电缆固定;3)通过螺母、接头主体和外壳之间的金属对金属接触实现接地连续性。锥形设计确保密封力渐进分布。
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Aluminum compression nuts are lighter, more corrosion-resistant in certain environments, and typically anodized for insulation. Brass nuts offer better conductivity and are preferred in explosive atmospheres. Material choice depends on application requirements like weight, corrosion resistance, and grounding needs.
Refer to manufacturer specifications based on nut size and cable diameter. Generally, apply 1/4 turn past hand-tight for metric threads, or use torque values from the specs table. Over-torquing can damage the sealing ring, while under-torquing compromises the IP rating.
Limited reuse is possible if threads and compression surfaces are undamaged. However, the sealing ring should always be replaced. Aluminum nuts are more prone to thread galling than brass or stainless steel versions.
CNFX 是开放目录,不是交易平台或采购代理。工厂资料和表单用于帮助你准备直接沟通。
CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。
说明目标数量、应用场景、交期和关键技术要求,用于准备 RFQ 或供应商评估。