Hammer drills and rotary hammers comparison

Basically yes. Lower power units are usually titled as "hammer drills." Higher power units, usually labeled "rotary hammers," tend to be larger and provide bigger impact forces. But there are a few differences that are worth knowing: The rotary hammer usually have a chisel only feature, for light chiseling and masonry removal. Rotary hammers also have specially designed chucks that only accept bits specifically designed to fit their chuck. The special chuck on a rotary hammer helps hold the drill bit and prevents it from slipping during use.

Hammer action very poor

The impact drill is the every body @home to use machine for an simple a brick wall, the Hammer drills are the second option to have more possibillities but little functions with drill function with more impact for concrete . the third version is the rotary hammer with the drill and (demolition) option BUT its only just an extra option in 80% of the brands for short duty and in most cases the function having very limited working hours on it because of heat and materials are not of the same quality as real demolition tools remember that Brands like DUSS HILTI have also tools with a long lasting rotary machine but very expensive , REMEMBER if using a demolition hammer that is made for long lasting jobs , ( The price is usually decisive) it can be used for a few hours a rotary hammer is NOT build for more then one hour continu the new high speed rpm rotary tools will not made people happy in professional working.
If it is nessecary to breaking long jobs and hours to spend ,take the special demolition AIR Tools. Atlas Copco Ingersoll Millers Falls Wacker Neuson Hilti or the one and only ATA Tools.