EJM340/4-2 Rapid Tunneling And Bolting Integrated System

The main unit has a cutting power of 340 kW, providing strong power, high cutting capability, and efficiency.
Simultaneous tunneling and bolting operations significantly enhance work efficiency, achieving rapid tunneling.
With a low ground pressure of 0.16 MPa, the crawler remains stationary during tunneling, maximizing protection of the roadway floor.
The hydraulic system is configured with a high margin, ensuring the longevity of hydraulic components and supporting simultaneous operation of all bolting machines.
An integrated dust removal system is equipped, including water mist dust removal, foam dust removal, and wet/dry dust removal, to improve dust removal efficiency and ensure a safe working environment in the roadway.
The machine operates with a small unsupported roof span, making it suitable for poor roof conditions.
The cutting advance is driven by a cylinder, keeping the machine body stationary during cutting to minimize crawler-induced floor damage and enable adaptation to poor floor conditions.
It has advanced drilling and drainage functions for water, gas, and geological exploration.

Why Choose the EJM340/4-2 Integrated System?

The EJM340/4-2 system combines rapid tunneling, bolting, and advanced support technologies into a high-efficiency underground mining solution.

Name	Unit	Technical Specification
Overall length	m	11.5
Overall width	m	5.3
Overall Minimum height	m	2.55
Cutting range	m	Height 2.8-4.5 Width 5.3-5.8
Economic cutting hardness of coal/rock	Mpa	≤40
Maximum cutting coal seam hardness	Mpa	60
Number of machines	set	4 roof bolters + 2 bolters
Operating gradient	°	±17
Unsupported roof span	mm	1700-2500
Ground pressure	Mpa	0.16
Total power	kW	680
Overall weight	t	105