车坪乡Minchuen中型电机CFKD24055083精于技术
FH-钢制实体保持架，经渗碳淬火。H,H1-渗碳淬火保持架。P5-公差等级符合标准ISO规定的5级。P4-公差等级符合标准ISO规定的4级。P2-公差等级符合标准ISO的2级（不包括圆锥滚子轴承）NSK轴承前置代号含义F凸缘外圈的深沟球轴承（适用于d小于1毫米），例:F65。HR高负载圆锥滚子轴承，例：HR327J。NSK轴承后置代号含义A内部设计与标准不同的轴承。A角接触球轴承，接触角为3度。
车坪乡Minchuen中型电机CFKD24055083精于技术


蜗轮蜗杆减速机的转动特点有哪些
蜗轮蜗杆减速机传动平稳，无噪音，因为蜗杆齿是连续不间断的螺旋齿，它与蜗轮齿啮合时是连续不断的，蜗杆齿没有进入和退出啮合的过程，因此工作平稳，冲击、震动、噪音都比较小。蜗轮蜗杆减速机具有自锁性。蜗杆的螺旋升角很小时，蜗杆只能带动蜗轮传动，而蜗轮不能带动蜗杆转动。蜗杆传动效率低，一般认为蜗杆传动效率比齿轮传动低，尤其是具有自锁性的蜗杆传动，其效率在0.5以下，一般效率只有0.7～0.9。
总体上讲蜗轮蜗杆减速机传动比大，结构紧凑。蜗杆头数用Z1表示(一般Z1=1~4)，蜗轮齿数用Z2表示。从传动比公式I=Z2/Z1可以看出，当Z1=1，即蜗杆为单头，蜗杆须转Z2转蜗轮才转一转，因而可得到很大传动比，一般在动力传动中，取传动比I=10-80;在分度机构中，I可达1000。这样大的传动比如用齿轮传动，则需要采取多级传动才行，所以蜗杆传动结构紧凑，体积小、重量轻。

车坪乡Minchuen中型电机CFKD24055083精于技术

车坪乡Minchuen中型电机CFKD24055083精于技术

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车坪乡Minchuen中型电机CFKD24055083精于技术
面对多数人在选购开关插座时无所适从，以及市面上各种优劣开关插座鱼龙混杂的情形，现在将开关插座选购秘诀带给大家，让大家能够将安全可靠的优质开关插座带回家。简单来说，开关插座选择有六点，一看标识，二看外观，三看设计，四看绝缘材料，五看导电部件用材，六闻气味。一看标识。购买时注意查看开关插座底座上的标识：是否有3C认证、额定电流大小、商标等标志，观察产品包装盒上是否有清晰的厂家地址电话，包装内是否有使用说明书和合格证等。

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