MINING AND TUNNELING MACHINERY KSP_42 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. Features * Robust cutting boom powered by a 160 or 200 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 Parameters Ultimate strength of rocks breaking, sñîmp, MPa, min 120 (f=10) Rock abrasivity, mg, max 18 Technical output, m3, max    - σñæ = 120 MPa 0,2  - σñæ = 100 MPa 0,35  - σñæ = 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 Feeder 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 Chassis   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   The plant’s design bureau is capable to work out and complete machines also with other equipment depending on customer demands