It looks like you have a rugged garage floor that needs flattening, and even after an hour with a hand-held floor grinder, you have only flattened one corner. But before renting any grinder, it helps to understand how a walk behind floor grinder differs from a hand-held floor grinder, since each excels at different tasks. The 电动混凝土研磨机选购指南 清晰地展示了每台机器在尺寸、功率和重量上的差异。这有助于您做出选择。 步行式地面研磨机 以及手持式的。
Walk Behind Floor Grinder vs Handheld Grinder: Which One Do You Need?
Choose a walk behind floor grinder for large, open slabs, and a handheld grinder for edge work, corners, and small areas. In most cases, you need both: a walk behind floor grinder cannot reach the wall, and a handheld grinder is slow on open floors.
| 因素 | 手推式地面研磨机 | Handheld grinder |
| 最适合 | Whole floors and large slabs | Edges, corners, stairs, and spot repairs |
| 保障范围 | Roughly 500 to 2,000+ sq ft per day | Roughly 50 to 150 sq ft per hour |
| 光盘尺寸 | 10 to 30 in heads, single-disc or planetary | 4 to 7 in diamond cup wheel |
| 重量 | Roughly 150 to 400+ lb; compact models weigh less | Most are under 10 lb |
| 除尘 | Often a built-in vacuum port | Shroud is optional, so confirm it |
| 技能等级 | 中级水平；有经验者优先。 | 初级到中级 |
决定性的三件事
决定哪款研磨机最适合你的工作，需要考虑以下三个因素：
- 空间大小： 一个小的 手推式 面积小于 200 平方英尺且拐角和障碍物较多的空间适合使用手持式设备；整个车库或地下室则适合使用…… walk behind floor grinder.
- 结束时间： 大面积环氧树脂或抛光混凝土表面需要均匀打磨，因此手推式地面研磨机很适合。
- 权限： 狭窄的门和楼梯可能会妨碍大型机器的使用。使用 手持式角磨机 楼梯平台、狭窄的墙面以及最后几英寸的墙面区域都装有带杯轮的机器，而较大的机器根本无法放置在这些地方。
研磨前先准备好石板
无论选择哪种方法，研磨前都要先做好表面处理。研磨会暴露所有凹坑和裂缝，而剥离则会去除覆盖在它们上面的任何涂层。在使用任何工具之前，请按照以下顺序完成所有步骤： prepare your garage floor for cracks, and seal all gaps to avoid re-grinding the same spots.
在开始工作前，务必了解两种工具的局限性。两种研磨机都无法切割接缝或进行贯穿切割，因此这项工作需要两个阶段：切割，然后通过研磨使表面光滑。对于需要控制接缝或进行贯穿切割的项目，请使用导向装置。 混凝土切割 saw instead.
What Jobs Is a Walk-Behind Floor Grinder Best For?
手持式边缘和边角研磨机
Edges and corners are the one place a handheld tool still beats the larger machine. Use a handheld angle grinder with a dust shroud and a 5-inch cup wheel for the perimeter, connect it to a vacuum, then blend that edge into the field the walk-behind floor grinder ground. The handheld tool only wins at the edges and corners. Take your handheld angle grinder, attach a dust shroud and a 5 in cup wheel将其连接到吸尘器，并将边缘与手推式地面研磨机打磨出的地面融合在一起。
带吸尘功能的步行式地面研磨机
Dust control is just as important as the machine, since the process generates silica dust. According to OSHA’s silica guidelines for walk behind floor grinders, the manufacturer recommends a dust collection system with a filter with 99% efficiency or more, or a water feed. Indoor dust collection uses a HEPA vacuum cleaner for loose dust after each pass. The dust collection system has to fit the machine.
The dust port is also a part of the machine. This 7-inch, 1.7 HP floor grinder has a dust port that connects to the external vacuum. The VEVOR listing shows wet and dry use, but the 7-inch floor grinder manual states it is designed for dry use with an industrial vacuum.
After grinding, vacuum the dust and slurry from the area before it has a chance to settle. The slab must be clean in order to bond effectively with whatever you apply after, so read about cleaning a concrete garage floor prior to sealing.
What Are the Best Walk-Behind Floor Grinders for Preparing and Smoothing Large Concrete Floors?
Match the walk behind floor grinder with the slab size. For large warehouse slabs, a multi-head three-phase machine like the Husqvarna PG 690 or Lavina 32 Pro can handle the job in one pass. For medium-sized slabs, the Husqvarna PG 540 is the right choice. For a garage or basement slab, a smaller one-disc machine from VEVOR的混凝土研磨机清单 will suffice. Since no source ranks these machines, you can compare their working area and weight alongside other features.
| 包装机械 | 工作宽度 | Power and supply | 笔记 |
| Husqvarna PG 690 (push) | 640毫米，三个270毫米圆盘 | 12.5千瓦，380-415伏三相 | 502 kg; floor prep, grinding, and polishing |
| Superabrasive Lavina 32 Pro | 32英寸，六个9英寸头 | 20马力，三相，240伏或480伏 | 专为大型商业项目设计的六头行星齿轮机 |
| 胡斯华纳 PG 540 | 三张9英寸光盘 | 4.0 千瓦（5.5 马力），单相或三相 | 177.8公斤；适用于地面预处理、研磨和抛光的紧凑型机型 |
| VEVOR 10英寸 1.7马力 | 10 in disc | 1300瓦，1720转/分 | 连接外部吸尘器的集尘接口 |
为您的项目推荐
大型机械电源
这种尺寸的设备通常需要比标准家用插座更高的电压。例如，一些工业研磨机需要 220 伏单相或三相电，而一些行星式研磨机则需要 460 伏三相电。
如何为手推式地面研磨机选择合适的砂轮尺寸？
选择合适的圆盘尺寸，既要考虑地面面积，又要兼顾清洁便利性：车库和小空间适合较小的圆盘，而宽敞的地面则适合较大的圆盘。关于圆盘尺寸的具体要求，各方建议不尽相同。一种建议指出，家用洗地机的直径范围为 18 至 22 英寸，中型商用机型的直径约为 25 至 30 英寸，而直径超过 32 英寸的则适用于大面积区域。另一种说法是，对于面积小于 1,000 平方英尺的空间，7 至 11 英寸的小型洗地机就足够了。
The disc size depends mostly on the machine. For instance, the 10英寸1.7马力地面研磨机 uses a 10-inch disc, while the 7-inch one uses a 7-inch disc that fits through a door easily but covers less of the floor each cycle. Power is also a factor here.
How Do I Move a Walk Behind Floor Grinder Up Steps or Into a Vehicle?
Consider the machine’s weight first, then factor in another person, a ramp, or lifting machinery when lifting heavy objects. The NIOSH lifting equation starts with a 51-pound (23 kg) load under ideal conditions and reduces it for awkward lifting. It’s an initial calculation, not an absolute safe limit; therefore, most walk behind floor grinders require assistance. Weight varies widely, from lighter models two people can lift to heavier ones that require lifting machinery. The 1400W walk behind floor grinder is listed at 62.5 lb with a folding handle, which is already above that figure.
向上爬的步骤
上下楼梯时，请减轻背部压力。如果可能，请折叠或拆下把手，从说明书指示的位置抬起，并请另一人抬起另一端。切勿将设备拖上楼。
将其装入车辆
Big industrial grinders require a separate transportation plan. The Husqvarna PG 690 (push) weighs 502 kg, so confirm the exact weight, lifting points, and transportation instructions for that machine before arranging the lifting equipment. If you’re renting, ask which of the three options applies: you load it yourself, you tow it using a trailer, or it will be delivered to you. In the first case, you need a vehicle that can carry the machine’s weight; in the second, you need a vehicle with the appropriate towing capacity. Delivery solves that issue, but you’re responsible for everything you transport yourself. Find the exact weight of the models in the concrete walk-behind floor grinder range.
我应该买还是租一台手推式地面研磨机？
如果您只有一层楼，或者只有一层楼面积较大，并且需要一台商用机器，那么租用即可。如果您需要打磨多层楼，或者未来项目的手推式地面打磨机租赁成本与购买一台小型机器的成本相当，那么购买即可。
| 因素 | 租赁 | 买房 |
| 项目规模 | 适用于一次性工程和大面积地面 | 适合用小型机器进行重复性工作。 |
| 工装 | 询问是否需要适合该机器的刀具，或者转换板。 | 您选择并存放工具。 |
| 除尘 | Ask for a matching dust collector | 购买配套的吸尘器和防尘罩。 |
| 搬家和仓储 | 送货或取货选项 | You move and store it yourself |
结语
Clean the open floor with a walk behind floor grinder, and use a hand-held floor grinder on the edges. In some cases, you may need both. Consider the slab size, your power source, and your dust collection system, and decide how you’ll move the machine before you rent or purchase. The equipment and dust collection system are just as important as the grinding machine. Once the floor surface is level, choosing between garage floor tiles and epoxy 变得容易。
常見問題解答
手推式地面研磨机比手持式研磨机更好吗？
这取决于具体任务。手推式打磨机适合大面积平整的地面，但手持式打磨机更适合处理边缘和角落。
在车库地面上，手持式研磨机可以代替手推式地面研磨机吗？
If it is just a small area, then yes, but doing the whole garage takes much longer. People generally use a walk-behind floor grinder for the floor and a handheld grinder on the walls.
我需要一台带手推式地面打磨机的吸尘器吗？
是的。干磨会产生细小的二氧化硅粉尘，因此您需要连接制造商推荐的、配备99%高效过滤器的集尘器。普通的工业吸尘器可能无法收集到这些细小的粉尘颗粒。
What power does a walk behind floor grinder need?
这取决于机器的具体情况。一些小型机器使用110伏系统，而大型机器可能使用220伏或三相电源系统，因此请查看铭牌。
