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A detailed buying guide: how to choose a rotary hammer.
This section covers corded electric rotary hammers for drilling holes in concrete, reinforced concrete, brick and stone, and — in chiselling mode — for removing tiles, plaster and thin layers of concrete in renovation, electrical, plumbing and construction work. The category includes household, semi-professional and professional models with SDS Plus and SDS Max tool holders. For suitable chisels, read how to choose a rotary hammer chisel.
Three-mode rotary hammers drill, hammer-drill and chisel, while two-mode models have no chiselling mode. L-shaped models suit vertical and heavy work, inline models suit horizontal holes in walls. See differences between professional and household power tools.
Impact energy (J) shows how quickly the tool works through concrete: 2–3 J is enough for home renovation, 4–8 J for professional work, and SDS Max models deliver 8–20 J or more. Read what is impact energy (J).
Corded rotary hammers are usually rated at 600–1500 W. Compare power together with impact energy and weight, since models with the same power can perform differently. See how to choose tool power (W).
SDS Plus is designed for holes up to about 26–32 mm and light to medium rotary hammers, while SDS Max is for heavy tools, large diameters and intensive chiselling. Bits and chisels must match the holder. Read differences between SDS plus, SDS max, and HEX systems.
Check the maximum drilling diameter in concrete, steel and wood, and whether core bits can be used. For choosing the right bit, read how to choose drill-bit diameter and length and how to choose an SDS plus drill bit.
Speed and impact-rate control let you start holes accurately, work with tile and brittle materials and choose the right mode. Reverse helps free a jammed bit. See what is rotational speed (RPM).
Models with a quick-change keyless chuck can also use standard round-shank drill bits for metal and wood. For chuck types, read types of chucks and their applications.
An anti-vibration system, auxiliary handle, safety clutch and balanced weight reduce fatigue and the risk of kickback. See what is vibration level and tool ergonomics, weight, and safety systems.
Before drilling, check the wall for cables and pipes, hold the tool with both hands and regularly grease the SDS shank. Read how to use a rotary hammer safely and how to maintain a rotary hammer SDS system.
At ToolsArmenia you can compare corded rotary hammers by impact energy, power, tool holder, modes, drilling diameter and weight and choose the right model for your jobs.
