在济南的大街小巷，卷帘门作为商铺、车库的 “卫士”，日复一日承受着频繁升降的考验。时间一长，开关时的卡顿、异响逐渐显现，这时就需要给它 “喂” 点润滑油来恢复顺滑。不过，给卷帘门上油可不是随意涂抹，掌握正确的方法和关键点位，才能让它重焕灵活。

　　In the streets and alleys of Jinan, rolling shutter doors, as the "security guards" of shops and garages, are subjected to frequent lifting and lowering tests day after day. Over time, the stuttering and abnormal noise of the switch gradually become apparent, and it is necessary to "feed" it some lubricating oil to restore smoothness. However, oiling the rolling shutter door is not something to apply casually. Only by mastering the correct methods and key points can it regain its flexibility.

　　准备工作：工具与油品的双重把关

　　Preparation work: Dual control of tools and oil products

　　在动手润滑前，先备好合适的工具与润滑油。工具方面，一把小毛刷用于清理灰尘杂物，一支长嘴油壶能精准控制润滑油的流向，干净的抹布则负责擦拭多余油渍。润滑油的选择也有讲究，应避免使用黏稠的黄油，因为它容易吸附灰尘形成油泥，反而加重卡顿；建议使用流动性好、抗磨损的专用卷帘门润滑油，或是轻质的机油，确保润滑效果持久。

　　Before starting to lubricate, prepare suitable tools and lubricating oil. In terms of tools, a small brush is used to clean dust and debris, a long mouthed oil pot can accurately control the flow of lubricating oil, and a clean cloth is responsible for wiping off excess oil stains. The selection of lubricating oil also has its own considerations. It is advisable to avoid using viscous butter, as it can easily absorb dust and form sludge, which can worsen the lag; It is recommended to use specialized rolling shutter door lubricating oil with good fluidity and wear resistance, or lightweight engine oil, to ensure long-lasting lubrication effect.

　　关键部位一：卷轴轴承的深度滋养

　　Key part one: Deep nourishment of scroll bearings

　　卷帘门的卷轴轴承是承担整扇门重量与升降摩擦的核心部位，也是需要润滑的 “重灾区”。找到卷轴两端暴露在外的轴承，先用毛刷仔细扫去表面堆积的尘土、铁屑等杂质，确保轴承表面干净。接着，将油壶嘴对准轴承与轴杆的缝隙，缓慢注入润滑油，让油顺着缝隙渗透到轴承内部。为保证充分润滑，可一边注油，一边手动转动卷轴，使润滑油均匀分布在轴承的各个接触面。每侧轴承少滴入 5 - 8 滴润滑油，老旧或卡顿严重的轴承可适当增加用量。

　　The roller bearing of the rolling shutter door is the core part that bears the weight and lifting friction of the entire door, and it is also the "hardest hit area" that needs lubrication the most. Find the exposed bearings at both ends of the scroll, and carefully sweep away the accumulated dust, iron filings, and other impurities on the surface with a brush to ensure that the bearing surface is clean. Next, align the oil spout with the gap between the bearing and the shaft, slowly inject lubricating oil, and allow the oil to penetrate into the interior of the bearing through the gap. To ensure sufficient lubrication, the oil can be injected while manually rotating the spool to evenly distribute the lubricating oil on all contact surfaces of the bearing. At least 5-8 drops of lubricating oil should be dripped onto each side of the bearing. For old or severely stuck bearings, the amount can be increased appropriately.

　　关键部位二：链条与齿轮的 “咬合呵护”

　　Key part two: "bite care" of chain and gear

　　若卷帘门采用链条传动，链条与齿轮的润滑同样重要。观察链条表面，若出现干涩发白、锈迹或卡顿，就需及时保养。先用抹布擦拭链条，去除表面污垢，再将润滑油沿着链条的链节缝隙逐一滴入，确保每个转动关节都能得到润滑。对于齿轮，可将油滴在齿轮的齿牙上，然后手动推拉卷帘门，让齿轮转动起来，使润滑油充分覆盖咬合部位。在这个过程中，要特别注意避免润滑油滴落在门帘上，若不慎滴落，需立即用抹布擦净，防止油渍污染。

　　If the rolling shutter door adopts chain drive, lubrication of the chain and gears is equally important. Observe the surface of the chain. If there is dryness, whitening, rust, or jamming, timely maintenance is necessary. First, wipe the chain with a cloth to remove surface dirt, and then drip lubricating oil along the gaps between the chain links one by one to ensure that each rotating joint is lubricated. For gears, oil can be dripped onto the teeth of the gear, and then the rolling shutter door can be manually pushed and pulled to make the gear rotate, so that the lubricating oil fully covers the meshing area. During this process, special attention should be paid to avoiding lubricating oil from dripping onto the door curtain. If it accidentally drips, it should be wiped clean immediately with a cloth to prevent oil contamination.

　　关键部位三：导轨与滑轮的 “滑行助力”

　　Key part three: "Sliding assistance" of guide rails and pulleys

　　卷帘门的导轨和滑轮承担着引导门体上下滑动的功能，一旦干涩，就会导致升降不畅甚脱轨。检查导轨内部，若发现有灰尘、碎石或干涩痕迹，先用毛刷清理干净，再沿着导轨的凹槽均匀涂抹一层润滑油。对于滑轮，可将油滴在滑轮的轴承处，然后多次升降卷帘门，让滑轮在导轨中滑动，使润滑油均匀分布，减少摩擦阻力。值得注意的是，导轨两端的封口处也需少量注油，防止滑轮在此处因缺乏润滑而卡顿。

　　The guide rails and pulleys of the rolling shutter door bear the function of guiding the door body to slide up and down. Once it becomes dry, it can lead to poor lifting or even derailment. Check the inside of the guide rail. If dust, gravel or dry marks are found, clean them with a brush first, and then apply a layer of lubricating oil evenly along the groove of the guide rail. For pulleys, oil can be dripped onto the bearings of the pulley, and then the rolling shutter door can be raised and lowered multiple times to allow the pulley to slide in the guide rail, ensuring even distribution of lubricating oil and reducing frictional resistance. It is worth noting that a small amount of oil needs to be injected at the sealing points on both ends of the guide rail to prevent the pulley from jamming due to lack of lubrication at this location.

　　收尾工作：细节处理与效果检验

　　Closing work: Detail processing and effect verification

　　完成关键部位的润滑后，用干净抹布擦去卷帘门表面多余的润滑油，避免吸附灰尘。随后，反复升降卷帘门 3 - 5 次，观察门体运行是否顺畅，卡顿、异响是否消失。若仍存在问题，需再次检查润滑部位，补充润滑油或排查是否有其他机械故障。此外，建议每隔 3 - 6 个月为卷帘门进行一次润滑保养，尤其是在风沙较大的季节过后，及时清理灰尘并补油，让卷帘门始终保持灵活的工作状态，守护好每一扇门后的与便利。

　　After completing the lubrication of key parts, use a clean cloth to wipe off excess lubricating oil on the surface of the rolling shutter door to avoid dust adsorption. Subsequently, repeatedly lift and lower the rolling shutter door 3-5 times, observing whether the door runs smoothly and whether the jamming and abnormal noise disappear. If the problem still exists, it is necessary to check the lubrication parts again, replenish lubricating oil or investigate whether there are other mechanical faults. In addition, it is recommended to lubricate and maintain the rolling shutter doors every 3-6 months, especially after the windy season. Clean the dust and replenish the oil in a timely manner to keep the rolling shutter doors in a flexible and efficient working state, and protect the safety and convenience behind each door.

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