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The KSP-42 Roadheader is a completely new heavy duty machine for cutting very hard strata. It is designed to mechanize the process of breaking and loading of mined rock while driving mine workings with a gradient of up to ±12° and cross-section from 12.5 up to 35 m2 in coal and mixed faces with the ultimate strength of up to 120 MPa and abrasivity of up to 18 mg in mines with hazardous concentration of gas (methane) and coal dust.


  • Robust cutting boom powered by a 110 kW air cooled electric motor
  • Heavy duty cutting head with efficient pick face flushing facility
  • Telescopic action to allow cutting head to be sumped in with the machine stationary and therefore independent of floor conditions
  • Center scraper chain conveyer built for abrasive applications with an enlarged throad
  • Enlarge crawler tracks which are independently operated to give maximum machine maneuverability for working on steep gradients and poor floor conditions
  • Travel backup hydraulic units enabling to smoothly move the machine on steep gradients
  • Real floor sprag jack to increase machine stability in adverse cutting conditions
  • Loading apron performs as a front support
  • Scraper conveyor and stage loader enable to use the machine with various type of excavated material handling
Ultimate strength of rocks breaking, sсоmp, MPa, min 120 (f=10)
Rock abrasivity, mg, max 18
Technical output, m3, max  
- σсж = 120 MPa 0,2
- σсж = 100 MPa 0,35
- σсж = 80 MPa 0,5
Minimum finished section, m2 12.5
Maximum rock section, (at the cutting boom swing), m2 37
Gradients of driven working, degrees ±12
Cutting boom swing, mm:  
- height 5200
- width 7500
- below ground level 200
Cutting boom
Type boom with linear-axial cutting head
Telescoping travel, mm 660
Rated power of the cutting head electric motor, kW 160 (200)
Cutting head  
- maximum diameter, mm 950
- cutting length, mm 640
Pick number, pcs 42
Cutting head rotation frequency, min -1 33
Cutting rate at the max. diameter of the cutting head, m/s 1,64
Type loading apron with gathering arms
Gathering arms gear hydro-mechanical, kinematically uncoupler
Feeder width, mm, max 4160
Lowering of the feeder lip below ground level, mm. max 200
Lift of the loading apron lip over ground level, mm, min 600
  Crawler Type
Chassis drives hydro-mechanical, kinematically uncoupled
Traveling speed, m/min.:  
- working speed (with loading) 1.1
- maneuvering speed (without loading) 4,6
Track width, mm 780
Maximum traction force of one track, kN 380
Scraper conveyor
Type scraper twin-chain with a rigid or lift and swivel stand
  twin-motor electromechanical gear
Trough width, mm 2x15 or 2x18.5
Trough width, mm 670
Chain speed, m/s 1,0
Conveyor throad height, mm 400
Stage loader
Type belt conveyor fitter to the rear side of the roadheader and to the monorail carrier
  electromechanical drive
Electric drive motor, kW 18.5
Belt width, mm 800
Belt speed, m/s 1,50
Length, mm 13400
Flushing System
Flushing points cutting head/material transfer from the scraper conveyor/from the reloader
Water pressure in the flushing system, MPa, min 1.5
Water discharge for the cutting head flushing, l/min, max 70
Overall machine dimensions in a transportation position, mm
- length (without stage loader) 11350
- width over crawler 2950
- width over feeder 4160
- height over body 2200
- height (cutting boom) 2300
Voltage, V 1140/660
Rated current frequency, Hz 50
Total rated power of electric motors including, kW 350 (390)
Weight, t 75
Ground pressure, MPa, Max 0.16
Clearance, mm 270
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