MINING AND TUNNELING MACHINERY KSP_22 This new having no analogues light duty roadheader with the performance exceeding the existing machines of the same class is designed to mechanize breaking and loading the mined rock while driving mine workings of rounded, arched, trapezoidal and rectangular forms of section in coal and mixed faces (50% of coal and 50 % of rock) with single-axis compressive strength of up to 80 MPa and abrasivity not more than 15 mgs with an inclined gradients ±12° in mines hazardous on gas (methane) and coal dust. Working rock section driven by the machine from one placing is 8..17m2. Features Robust cutting boom powered by a 55 or 75 kW air cooled electric motor 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 Crawler tracks which are independently operated to give maximum machine maneuverability for working on steep gradients and poor floor conditions 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 Parameters Ultimate strength of rocks breaking, sñîmp, MPa, min 70 (f=5) Permissible ultimate strength of rocks constituting max 10% in the volume of coal cutting with rock, MPa 80 Rock abrasivity, mg, max 15 Output, m3/min    - in coal and coal-cutting with rock 1,42  - in coal and coal-cutting with rock, sñîmp. 80 MPa  0,25 Rough dimension of drivage, m    - height 2.1 – 4.45  - width 3.0 – 5.2 Gradients of driven working, degrees ±12 Cutting boom swing, mm:    - height 4450  - below ground level 180 (420*) Cutting boom Type boom with linear-axial cutting head Telescoping travel, mm 550 Rated power of the cutting head electric motor, kW 75 (55*) Cutting head rotation frequency, min -1 52 Cutting rate at the max. diameter of the cutting head, m/s 1.4 Feeder Type loading apron with gathering arms Gathering arms gear hydro-mechanical, kinematically uncoupler Swinging of arms, min-1 30 Feeder width, mm, max 3100 (2100*) Lowering of the feeder lip below ground level, mm. max 200 (420*) Chassis   crawler type Chassis drives hydro-mechanical, kinematically uncoupled Traveling speed, m/min.:    - working speed (with loading) 1.1  - maneuvering speed (without loading) 4.8 (5.8*) Track width, mm 530 Clearance, mm 190 Scraper conveyor Type scraper twin-chain with a rigid or lift and swivel stand   twin-motor electromechanical gear Trough width, mm 450 Chain speed, m/s 0.9 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 650 Belt speed, m/s 1.50 Length, mm 11400 Flushing System Flushing points cutting head/material transfer from the scraper conveyor/from the stage loader Water pressure in the flushing system, MPa, min 1.5 Water discharge for the cutting head flushing, l/min, max 60 Overall machine dimensions in a transportation position, mm  - length (without stage loader) 11200  - width over crawler 1970  - width over feeder 3100 (2100*)  - height over body 1600 Voltage, V 660 (500*) Rated current frequency, Hz 50 Total rated power of electric motors including, kW 173.2 Weight, t 30 Ground pressure, MPa 0.1 Clearance, mm 190 The plant’s design bureau is capable to work out and complete machines also with other equipment depending on customer demands