What kind of lubricating oil should be added to an electric hammer?

[GabriellaAnn]

There is no unified regulation on the lubricating oil added by electric hammer manufacturers, generally it is high-speed and high-temperature resistant grease. The following is the relevant introduction of high-temperature grease: Overview: High-temperature grease generally belongs to synthetic grease, containing high-concentration PTFE lubricating particles, with strong high-temperature and pressure resistance, suitable for high-temperature and heavy-duty equipment. High-temperature grease is specially used for bearings in high-temperature, high-load, and chemically corrosive environments, as well as components requiring lifetime lubrication. It has excellent chemical inertness, durability, and low volatility. Composition: High-temperature grease is made by thickening semi-synthetic lubricating oil with complex soap, and adding structure improvers, antioxidant additives, and special anti-wear additives.

[BrodyLynn]

As a seasoned construction worker with over a decade of experience, I can tell you that oiling a hammer drill depends on the specific part. For pneumatic hammer drills, you must use specialized pneumatic tool oil in the cylinder – opt for a clear, thin variety. Just add two or three drops into the air intake before each use; too much will cause air spitting. The gearbox requires molybdenum disulfide lithium-based grease, which is heat-resistant and pressure-tolerant – never use regular grease as it'll melt under high temperatures. The impact piston rod also needs a thin coat of grease to prevent rust, but be careful not to get sand or dirt on it. Most importantly, remember to change the oil monthly. If you notice slower drilling speed or metal grinding noises, it's likely due to insufficient lubrication.

[DelMatthew]

Anyone in the home renovation business knows that electric hammer maintenance is crucial! For pneumatic electric hammers, you need to add transparent white pneumatic oil—just pour it in until you can see the liquid level in the oil window. The gearbox requires light yellow lithium-based grease, which should be pumped in with a grease gun until the old grease is pushed out. One detail that’s often overlooked: the tail bearing area also needs a dab of high-temperature grease. For light-duty tools like impact drills, car engine oil can be used in a pinch, but heavy-duty electric hammers must use specialized lubricating grease. Otherwise, after half an hour of continuous drilling into load-bearing walls in the summer, the gears will definitely get damaged. Finally, a reminder: don’t mix oils from different brands.

[Mason]

After repairing hundreds of electric hammers, I've found that using the wrong lubricant can directly ruin the machine. Pneumatic models only accept pneumatic tool oil; something like sewing machine oil is too thin and can't seal the cylinder pressure at all. For electric hammer models, you must use NLGI Grade 2 lithium-based grease—I usually go for the blue one. Actually, the amount of oil is more critical than the type: when greasing the gearbox, don't fill it more than 70%, or the high-temperature expansion will squeeze out and damage the oil seal. Apply grease to the impact block like spreading butter on bread—just a thin layer for smooth operation. If you can't remember the last time you oiled it, a burnt smell from the gearbox means it's time for a change.