Types of Roadheader Machines Explained

Roadheader machines can be classified by cutting head orientation, machine size, working clearance and integrated support functions. These descriptions refer to different design features and can overlap: a compact roadheader may also be designed for hard rock excavation. Understanding these distinctions helps project teams compare equipment within the Boom Type Roadheader range against their geological conditions and roadway layout.

Types of Roadheader Machines by Cutting Head Orientation

Axial or Longitudinal Cutting Head Roadheaders

An axial cutting head rotates around an axis aligned with the cutting boom. When comparing this design, assess the complete cutting system, including head geometry, pick arrangement, drive power and machine stability. Cutting head orientation alone does not establish the machine's rock strength limit or expected output.

Transverse Cutting Head Roadheaders

A transverse cutting head rotates around an axis across the cutting boom. This is a different cutting arrangement rather than a separate application category. Selection should consider the specified cutting envelope, geological conditions and tool configuration alongside the cutting head design.

Roadheader Types by Size and Working Clearance

Compact Roadheaders

Compact roadheaders address projects where machine dimensions, positioning space and underground access are important selection factors. Compact does not necessarily mean low cutting power or suitability only for soft rock. The Weishi EBZ260S compact hard rock roadheader is an example within this design category.

Low Profile Roadheaders

Low profile roadheaders focus on restricted overhead clearance and the position of the cutting assembly. The Weishi EBZ260L low profile roadheader addresses low-height roadway requirements. Machine height, cutting head position and working cutting height are different dimensions and should be checked separately.

Heavy-Duty Hard Rock Roadheaders

Heavy-duty hard rock roadheaders combine a cutting system and supporting machine structure intended for demanding rock excavation. The description does not represent a universal power or weight class. Compare each model's rated capabilities, cutting coverage and configuration against the project requirements.

Roadheaders with Integrated Bolting Functions

A roadheader-bolter combines roadway excavation equipment with onboard bolting functions and, depending on configuration, temporary support. This classification describes integrated functions rather than cutting head orientation or machine size.

Weishi roadheader-bolter equipment should be assessed against the support design, drilling coverage, available workspace and permitted operating sequence. Integrated equipment does not automatically mean that cutting and bolting can operate simultaneously in every situation.

Common misconceptions about roadheaders include the belief that they are only suitable for soft rock or that they are slower than blasting methods. In reality, modern Boom Type Roadheaders can efficiently handle a variety of rock types, including hard rock, and provide consistent tunneling speeds that often outperform blasting in urban areas where safety and noise regulations are stringent. Furthermore, the automation and precision of roadheaders reduce the risk of accidents, making them a safer option for workers.

To illustrate the impact of roadheaders, consider a case study involving the construction of a new subway line in a densely populated city. The project included numerous challenges such as existing underground utilities and limited surface access. The use of a Boom Type Roadheader allowed for targeted excavation, effectively navigating around obstacles while completing the work within the designated timeline. This success story not only saved costs but also minimized disruptions for local communities, highlighting the machine's versatility and importance in urban infrastructure projects.

How to Compare Different Roadheader Types

Use the type description as a starting point, then compare the complete machine specification with your project conditions.

● Check rock strength, abrasivity, jointing and groundwater conditions.

● Compare the designed roadway profile with the machine's cutting envelope.

● Verify transport dimensions, turning space and operating clearance.

● Review support requirements, power supply and downstream material handling.

Weishi can review these requirements across its Road Header Machine range. Share your geology and roadway drawing with our team to discuss a suitable model and configuration.