Hydraulic Breaker Terminology: A Buyer’s Glossary

Breaker, hammer and working tool

Hydraulic breaker, hydraulic hammer and rock breaker commonly refer to the attachment that delivers repeated impacts. The working tool is the component that contacts the material and receives the piston blow. Commercial descriptions may call it a chisel, rod or bit, but those words do not identify its exact geometry.

Be explicit about whether the inquiry concerns the complete breaker or only its working tool. A request for a “hammer chisel” can be understood differently from a request for a complete hydraulic hammer package. The item reference and scope remove that ambiguity.

Main components and assembly names

Names alone do not establish what is included in a supplied assembly. One quotation may refer to a bare component while another includes additional internal items. Ask for an included-parts list when the scope affects the comparison.

Term	Buying-context meaning
Main body	A body or assembly description whose included components must be defined
Cylinder	The component associated with guiding the piston and the relevant hydraulic spaces
Piston	The moving component that delivers the blow to the tool
Front head	The front-end component or assembly identified in the parts record
Back head	The rear or upper head component identified by the particular design
Housing	The exterior enclosure or support structure, distinguished from internal components

Tool guidance, retention and fastening

Bushings guide the working tool within the relevant front-end arrangement. Rod pins or tool retainers are associated with retaining the tool. Through bolts connect major breaker sections in designs using that arrangement. These are separate ordering categories even when they appear close together in a photograph.

A component’s position matters. “Front bushing” and “lower bushing” may be interpreted differently unless the drawing identifies the location. Use a labeled parts image or an approved reference to connect the term with the actual item. Do not assume that a retaining pin is a mounting pin.

Carrier, bracket and quick coupler

The carrier is the machine providing the attachment connection and hydraulic supply. The bracket or adapter connects the breaker to the proposed mounting arrangement. A mechanical quick coupler allows an attachment connection to be changed through its designed engagement and locking system.

A hydraulic hose quick-disconnect is a fluid connection, not the same product as the mechanical excavator quick coupler. In an inquiry that includes both, label them separately. Likewise, identify whether mounting dimensions refer to the carrier, coupler or breaker side of the assembly.

Weight, flow, pressure and impact terms

Complete attachment weight includes the components defined in the stated scope; a bare-body weight may exclude them. Flow is oil volume per unit of time, while pressure describes a circuit condition or limit under its stated definition. Impact rate describes blow frequency; impact-energy statements require a clear basis for comparison.

These terms answer different questions. A single large figure does not establish compatibility or completed output. Keep units and document conditions with each value. NEWLAND’s hydraulic and specification guides explain those distinctions in more detail, while the parts-identification guide helps turn a component name into a precise purchasing reference.