山东机箱机柜别买错！深度高度选型公式，闭眼选不踩坑

　　Don't buy the wrong Shandong chassis cabinet! Depth and height selection formula, choose without stepping on the pit with your eyes closed

　　在山东，不管是企业机房、工地监控，还是商铺弱电设备安装，机箱机柜都是必不可少的配套设施。但很多用户在选购山东机箱机柜时，很容易陷入“凭感觉选尺寸”的误区，近期就遇到不少用户，因为买错了机柜深度，导致设备插头被柜门直接压弯，不仅损坏了插头，还可能影响设备正常运行，后续返工更换既费时间又费钱。今天就结合实际案例，给大家科普山东机箱机柜的正确选型方法，尤其是深度和高度的选择，记住两个简单公式，闭眼都能选对。

　　In Shandong, whether it is enterprise computer rooms, construction site monitoring, or the installation of weak current equipment in shops, chassis and cabinets are essential supporting facilities. However, many users easily fall into the misconception of "choosing size based on feeling" when choosing Shandong chassis cabinets. Recently, we have encountered many users who have purchased the wrong cabinet depth, resulting in the equipment plug being directly bent by the cabinet door. This not only damages the plug, but may also affect the normal operation of the equipment. Subsequent rework and replacement will be time-consuming and costly. Today, based on practical cases, we will explain to you the correct selection method for Shandong chassis cabinets, especially the selection of depth and height. Remember two simple formulas, you can choose the right one with your eyes closed.

　　先说说容易踩坑的机柜深度选型，这也是很多用户出错的重灾区。就像这次遇到的案例，用户没算准尺寸，买回来的机柜深度太浅，设备安装后，柜门一关就直接压住了设备插头，没多久插头就被压得严重变形，无法正常使用。其实选机柜深度，根本不用瞎猜，记住一个核心公式就够了：机柜的深度≥设备的深度+200mm。这里的200mm，就是专门留给设备插头、线路的余量，相当于给插头“留条命”，避免出现挤压损坏的情况。

　　First, let's talk about the depth selection of cabinets that are most prone to pitfalls, which is also a major area where many users make mistakes. Just like the case encountered this time, the user did not accurately calculate the size and bought a cabinet with a shallow depth. After the equipment was installed, the cabinet door immediately pressed down on the device plug as soon as it was closed. Soon after, the plug was severely deformed and unable to be used normally. In fact, when choosing the depth of the cabinet, there is no need to guess blindly. Just remember one core formula: the depth of the cabinet is ≥ the depth of the equipment+200mm. Here, 200mm is specifically reserved for the equipment plug and circuit, which is equivalent to leaving a "life" for the plug to avoid compression damage.

　　举个简单易懂的例子，方便山东的用户快速理解和套用。如果你的设备深度是600mm，按照公式计算，机柜深度就需要600mm+200mm=800mm，此时选择800mm深度的机柜，设备安装后，后面会留有充足的空间，插头、线路既能正常连接，又不会被柜门挤压，后续维护、整理线路也更方便。很多用户图省事，觉得“机柜深度和设备深度差不多就行”，却忽略了插头和线路的占用空间，终导致设备损坏，反而得不偿失。

　　Give a simple and easy to understand example to facilitate users in Shandong to quickly understand and apply. If the depth of your device is 600mm, according to the formula, the depth of the cabinet needs to be 600mm+200mm=800mm. At this time, choosing a cabinet with a depth of 800mm will leave sufficient space behind after the equipment is installed. The plugs and wires can be connected normally without being squeezed by the cabinet door, making maintenance and wiring more convenient in the future. Many users try to save time and think that "the depth of the cabinet is about the same as the depth of the equipment", but ignore the space occupied by the plugs and wires, which ultimately leads to equipment damage and is not worth the loss.

　　解决了深度选型的问题，再来说说机柜高度的选择，这也是影响设备安装合理性的关键。和深度一样，高度选择也有简单的计算方法，不用盲目追求“越高越好”，也不用怕买矮了不够用。要明确机柜的总高度，再结合标准U数换算，就能精准算出可用空间。行业内有个固定标准，1U的高度约等于44.45mm，我们可以用机柜总高度除以44.45mm，去掉小数点后的数字，得到的就是机柜的实际可用U数。

　　After solving the problem of deep selection, let's talk about the selection of cabinet height, which is also the key factor affecting the rationality of equipment installation. Like depth, there is also a simple calculation method for height selection. You don't have to blindly pursue "the higher the better", nor do you have to be afraid of buying short enough. Firstly, it is necessary to clarify the total height of the cabinet, and then combine it with the standard U-number conversion to accurately calculate the available space. There is a fixed standard in the industry that a height of 1U is approximately 44.45mm. We can divide the total height of the cabinet by 44.45mm and remove the decimal point to obtain the actual number of available U units in the cabinet.

　　比如常见的机柜总高度2100mm（也就是2.1米），用2100÷44.45≈47.24，去掉小数点后，这台机柜的可用高度就是47U；而2000mm（2米）高的机柜，换算后约为44.99，实际可用高度就是42U。可能有用户会问，42U的机柜能装多少设备？其实完全不用愁，一般情况下，42U的机柜装30个设备是绰绰有余的，剩余的空间还能留给线路整理、散热，以及后续新增设备，空间分配非常合理，既不浪费，也不会不够用。

　　For example, the total height of a common cabinet is 2100mm (2.1 meters), which is calculated as 2100 ÷ 44.45 ≈ 47.24. After removing the decimal point, the usable height of this cabinet is 47U. However, for a cabinet with a height of 2000mm (2 meters), the converted usable height is about 44.99, and the actual usable height is 42U. Some users may ask how many devices can be installed in a 42U cabinet? In fact, there is no need to worry at all. In general, a 42U cabinet is more than enough to accommodate 30 devices, and the remaining space can be reserved for line organization, heat dissipation, and subsequent equipment addition. The space allocation is very reasonable, neither wasting nor running out.

　　作为深耕山东机箱机柜行业的老代理商，见过太多用户因为选型不当踩坑，要么深度不够压坏设备，要么高度过高浪费空间、增加成本，要么高度不够无法安装全部设备。其实山东机箱机柜的选型，核心就是“精准计算、留足余量”，深度和高度的两个公式，看似简单，却能解决80%的选型难题，不管是新手还是有一定经验的用户，套用公式都能少走弯路。

　　As an old agent deeply involved in the Shandong chassis and cabinet industry, I have seen too many users fall into the trap due to improper selection. Either the depth is not enough to crush the equipment, the height is too high to waste space and increase costs, or the height is not enough to install all the equipment. In fact, the core of selecting computer cabinets in Shandong is "accurate calculation and sufficient margin". The two formulas for depth and height may seem simple, but they can solve 80% of the selection problems. Whether it is a novice or an experienced user, applying the formulas can avoid detours.

　　在这里也提醒山东的用户，选购机箱机柜时，不要只看，更要注重尺寸适配，毕竟机柜是用来保护设备、规范线路的，尺寸选错了，再好的质量也没用。如果遇到不确定的地方，比如不知道设备深度怎么测量、总高度怎么换算，或者有特殊设备的安装需求，不用自己瞎琢磨，及时咨询代理商，就能获得精准的选型建议，避免返工浪费。

　　Here, we also remind users in Shandong that when choosing chassis and cabinets, they should not only consider the price, but also pay attention to size adaptation. After all, cabinets are used to protect equipment and standardize circuits. Choosing the wrong size will result in poor quality. If you encounter uncertainty, such as not knowing how to measure the depth of the equipment, how to convert the total height, or having installation requirements for special equipment, you don't have to guess by yourself. Consult professional agents in a timely manner to obtain accurate selection suggestions and avoid rework and waste.

　　总的来说，山东机箱机柜的选购没有想象中复杂，只要记住深度和高度的选型公式，结合自己的设备实际情况，精准计算、留足余量，就能闭眼选对，既保护设备，又能合理利用空间、控制成本。希望这篇科普能帮到正在选购山东机箱机柜的用户，避开选型误区，买到适配又实用的产品，让设备运行更稳定、维护更省心。

　　Overall, the selection of chassis cabinets in Shandong is not as complicated as imagined. As long as you remember the selection formulas for depth and height, combine them with your actual equipment situation, accurately calculate and leave enough margin, you can choose the right one with your eyes closed. This not only protects equipment safety, but also makes reasonable use of space and controls costs. I hope this science popularization can help users who are currently choosing Shandong chassis cabinets to avoid selection errors and buy suitable and practical products, making equipment operation more stable and maintenance more worry free.