5 Best Jackhammers May 2021 BestReviews
2018-2-23 · These jackhammers use a pump and piston to create drive with high oil pressure. Because oil doesn't compress, it's a very efficient way of transferring energy. However, the equipment is very specialized. Hydraulic hoses aren't particularly flexible, so managing them is awkward. Typically, you'll see hydraulic jackhammers used by highway workers.