Used Krauss Maffei 4000-24500 Mc for sale (4,292)

Condition: used, functionality: fully functional, Year of construction: 2018, screw conveyor diameter: 52 mm, Krauss Maffei Berstoff ZE 52-48D Twin Screw Extruder (2018) comprising Krauss Maffei Berstoff ZE 52-48D Twin Screw Extruder with Credpfx Aoz Atiuoi Ssh 2x 52.2 mm diameter screws 48:1 L/D ratio, co-rotating 12-barrel housing section, electrically heated and water-cooled Side feeder 1200rpm max.imum screw speed 350kW motor with Eisenbeiss ZE-042.5-16.0 gearbox

Condition: ready for operation (used), Year of construction: 2011, operating hours: 49,533 h, clamping force: 3,000 kN, screw diameter: 70 mm, controller manufacturer: KRAUSS MAFFEI, controller model: MC5, Hydraulic injection moulding machine manufactured in 2011. This Krauss Maffei 300-2000 CX features a clamping force of 300 t and a screw diameter of Ø 70 mm. It has a maximum mould opening of 1000 mm and tie bar spacing of 630 × 630 mm. If you are looking to get high-quality injection moulding capabilities, consider the Krauss Maffei 300-2000 CX machine we have for sale. Contact us for further details. • PP injection capacity: 640 g • Minimum mould dimensions: 320 mm Crjdjy S Tqajpfx Ai Seh • Tie bar spacing: 630 x 630 mm • Maximum mould opening: 1000 mm • Working hours: 49,533 h

Condition: good (used), Year of construction: 2004, clamping force: 800 kN, screw diameter: 35 mm, For sale is an injection molding machine by Krauss-Maffei, type 80-220C2 The machine comes from a clean operation that places great importance on maintenance and is fully operational immediately after installation Year of manufacture: 2004 Machine number: 61004709 Clamping force 80 tons Equipment: -Cylinder D35 -1 hydraulic core pull -Pneumatic needle shut-off Cjdswqmvgspfx Ai Serh -Tie bar withdrawal device on the operator’s opposite side Transport and loading can be organized throughout Europe for an additional charge if desired. Prices plus VAT Inspection possible by appointment. Contact us—our team is happy to assist you. Trade-in or exchange possible! Machines buying / selling PURCHASE / SALE OF PRODUCTION & METALWORKING MACHINES ETC. Do you need a high-quality yet affordable metalworking machine for your production? Or do you want to sell yours? For further info or means of contact, visit our website

Condition: excellent (used), Year of construction: 2018, KRAUSS-MAFFEI KM 900-8100 GX injection molding machine Year of manufacture: 2018 Csdjzvm E Ajpfx Ai Serh Control system: MC6 Clamping system: hydraulic-mechanical, two-platen Injection unit: 8100 Design and control Hydraulic-mechanical two-platen clamping system with 4 pressure pads on the fixed platen and 4 adjustment units on the moving platen. PV – injection unit adjustment. MC6 control system, based on an industrial computer operating with real-time Ethernet technology. Integrated 19-inch control panel with a color touchscreen, LED backlighting, and visualization of all running ProcessDesigner processes. Plasticizing unit Complete plasticizing unit for thermoplastics with abrasion protection. Screw diameter: 105 mm Backflow valve: yes Nozzle: open Nozzle radius: 25 mm Nozzle opening: 9 mm Clamping unit Clamping force: 9000 kN / 900 t Mold opening force: 630 kN Platen dimensions (H × V): 1660 × 1530 mm Distance between columns (H × V): 1180 × 1000 mm Standard maximum distance / opening width: 2100 mm Ejector stroke: 300 mm Ejector force front / rear: 140 / 70 kN Injection unit 8100 Screw diameter: 105 mm Ls/D ratio: 23:1 Maximum injection pressure: 1778 bar Injection volume: 4546 cm³ Injection weight: 3228 g* Injection speed: 90 mm/s Injection rate: 779 cm³/s Standard screw speed: 150 rpm Plasticizing rate at standard speed: 135 g/s* Nozzle pressure force: 166 kN * according to the manufacturer's specifications / reference material provided. Electrical and hydraulic equipment Rated motor power: 120 kW Installed heater power: 59 kW Number of cylinder heating zones: 7 Dry cycle time / stroke according to EUROMAP 6: 3.3 s / 826 mm Dry cycle time / stroke according to KraussMaffei standards: 2.9 s / 590 mm Required hydraulic oil quantity: 1450 l Dimensions and weight Machine dimensions (L × W × H): 10.72 × 3.03 × 2.51 m Net weight including control cabinet: 40.0 t

Condition: like new (used), Year of construction: 2019, Krauss Maffei KM 2300-12000 MX Injection Moulding Machine Year of manufacture: 2019 🏭 Manufacturer: Krauss Maffei Machine type: KM 2300-12000 MX Clamping system: fully hydraulic Control: MC5 – industrial computer with integrated 19” colour touchscreen display 🔧 Clamping unit Clamping force: 23,000 kN Maximum mould opening force: 1,610 kN Platen dimensions (W × H): 2,850 × 2,450 mm Tie bar clearance (W × H): 2,020 × 1,620 mm Opening stroke: 3,000 mm Mould height (min.–max.): 800 – 1,800 mm Crodpfx Aowxdrbsi Seh Maximum daylight: 3,800 mm Ejector stroke: 400 mm Ejector force: 400 / 200 kN 🧩 Injection unit Screw diameter: 105 mm Injection pressure: 2,296 bar Shot volume: 5,195 cm³ Shot weight (PS): 3,689 g Screw speed (standard): 103 rpm Plasticising rate (PS): 241 g/s Nozzle radius: 28 mm Nozzle orifice: 8 mm ⚡ Electro-hydraulic equipment Pump motor power: 132 kW Heater power: 93 kW Number of cylinder heating zones: 7 Dry cycle time (Euromap 6): 8.2 s Oil tank capacity: 2,440 l 📐 Dimensions and weight Net weight with control cabinet: 121 t Machine dimensions (L × W × H): 14.42 × 4.39 × 3.44 m

Condition: good (used), Year of construction: 1999, clamping force: 650 kN, Manufacturer: KraussMaffei Kunststofftechnik Munich Model: KM 65-160 C2 Clamping force: 650 kN Machine No.: 641070 Order number: 643883/1 Year of manufacture: 1999 International size designation: 160 C2 / 65 Operating voltage: 400 V Phases: 3 Frequency: 50 Hz Codpfx Aieytik Rj Sorh Total current: 153 A Main fuse: 160 A Max. motor current: 30 A Machine weight: 3,200 kg Location: Freiburg

Condition: excellent (used), Year of construction: 2014, travel distance X-axis: 1,500 mm, travel distance Y-axis: 2,400 mm, travel distance Z-axis: 6,000 mm, Krauss Maffei linear robot Credpfeyk S Ndsx Ai Soh Year of manufacture: 2014 X-axis: 1500 mm Y-axis: 2400 mm Z-axis: 6000 mm

Year of construction: 1999, condition: ready for operation (used), A two-component injection molding machine Krauss Maffei Multinject is available. Clamping force: 3500kN, platen dimensions X/Y: 1280mm/1190mm, second unit: 390CZ. Machine dimensions X/Y/Z: approx. 6300mm/2000mm/3100mm, weight: approx. 17000kg, control: Krauss Maffei MC4, operating hours: 78424h. The control is defective. Documentation vorhanden. An on-site inspection is possible. Codpfx Aisxx Uf Ao Sjrh

Condition: good (used), Hydraulic pump, oil pump, gear pump, vane pump, hydraulic power unit, double hydraulic pump -Double hydraulic pump: from KHS Krauss Maffei KM 1000-5000A injection molding machine -Pump 1: Voith type IPH 6/5-125/50 300 bar -Pump 2: Voith type IPR/H 6/5-125/40 210/300 bar -Drive: Loher 75 kW 1500 rpm Crodpfxsg Avqcs Ai Seh -Individual components: filters/valves, see photos -Dimensions: 2285/800/H900 mm -Weight: 1132 kg

Condition: ready for operation (used), Year of construction: 2010, operating hours: 80,000 h, clamping force: 800 kN, total width: 1,480 mm, total height: 2,020 mm, overall weight: 3,550 kg, product length (max.): 4,090 mm, Hydraulic injection moulding machine manufactured in 2010. This Krauss Maffei CX 80-180 features a clamping force of 80 T and a screw diameter of 40 mm. It has a shot volume of 201 cm³ and a shot weight of 183 g. The machine includes a Euromap 67 robot interface and six heating zones. If you are looking to get high-quality injection moulding capabilities, consider the Krauss Maffei CX 80-180 machine we have for sale. Contact us for further details. • Outer length: 670 mm • Outer width: 670 mm • Clamping force: 80.0 T • Screw diameter: 40.0 mm • Tie Bar spacing: 420 x 420 mm • Shot volume: 201.0 cm3 Crjdpfx Aijzk Elwo Soh • Shot weight: 183.0 g • 6 heating zones • Hydraulic core • Includes a Sepro sprue picker with the machine

Condition: refurbished (used), overhauled Rexroth double pump for Krauss Maffei SGM machines. Codsyithlopfx Ai Serh Service, repair and exchange of hydraulic pumps Rexroth, Voith, Bosch, Moog.

Condition: ready for operation (used), Year of construction: 2012, operating hours: 46,424 h, clamping force: 3,500 kN, screw diameter: 80 mm, controller manufacturer: KRAUSS MAFFEI, controller model: MC5, Hydraulic injection moulding machine manufactured in 2012. This Krauss Maffei 350-3000 CX features a clamping force of 350 t and a screw diameter of Ø 80 mm. It offers a PP injection capacity of 640 g and a maximum mould opening of 1260 mm. If you are looking to get high-quality injection moulding capabilities, consider the Krauss Maffei 350-3000 CX machine we have for sale. Contact us for further details. Crsdey S Tvvjpfx Ai Sjh • PP injection capacity: 640 g • Minimum mould dimensions: 380 mm • Tie bar spacing: 710 × 710 mm • Maximum mould opening: 1260 mm

Year of construction: 2000, condition: ready for operation (used), Two injection moulding machines Krauss Maffei are available. 1) Krauss Maffei KM 50 C1, year of manufacture: 1999, injection unit: SP220, screw diameter: 30mm, L/D ratio: 23, injection pressure: 2500bar, shot volume: 85cm³, machine dimensions X/Y/Z: approx. 3200mm/1350mm/1800mm, weight: approx. 2500kg, control: MC4, operating hours: approx. 86000h. 2) Krauss Maffei KM 125 C1, year of manufacture: 2000, injection unit: SP520, screw diameter: 45mm, L/D ratio: 20, injection pressure: 1878bar, shot volume: 217cm³, machine dimensions X/Y/Z: approx. 4500mm/1550mm/2200mm, weight: approx. 5500kg, control: MC4, operating hours: approx. 82000h. Documentation available. An on-site inspection is possible. Cedew Emybjpfx Ai Sorh

Condition: ready for operation (used), Year of construction: 2006, operating hours: 98,495 h, functionality: fully functional, clamping force: 500 kN, screw diameter: 25 mm, clearance between the columns: 370 mm, displacement volume: 74 cm³, injection pressure: 2,500 bar, injection weight: 59 g, mold height (min.): 200 mm, ejector force: 22,600 N, ejector stroke: 100 mm, opening stroke: 600 mm, total length: 3,500 mm, total width: 1,400 mm, total height: 1,910 mm, overall weight: 3,000 kg, heating capacity: 8.12 kW (11.04 HP), pump power: 11,000 W, type of input current: three-phase, input frequency: 50 Hz, input voltage: 400 V, Equipment: documentation/manual, We offer this used KraussMaffei 50-180 CX injection moulding machine, year 2006. KM Model: 50-180 CX International KM size designation: 180 CX/50 Year of manufacture: 2006 Machine serial number: 61009011 Machine weight: 3,000 kg Codpfxoyf E Dqj Ai Sorh Condition: ready for operation (used) Pump operating hours: 98,495 Automatic cycle hours: 83,046 Description: Screw diameter: 25 mm Clamping force: 500 kN Shot volume: 74 cm³ Maximum injection pressure: 2,500 bar Shot weight: 59 g Minimum mould height: 200 mm Maximum opening stroke: 600 mm Maximum daylight between platens: 600 mm Tie bar spacing: 370 mm Location ring, injection side: Ø125 mm Location ring, ejector side: Ø125 mm Ejector force (forward/backward): 22.6 kN / 9.9 kN Ejector stroke: 100 mm Machine dimensions (LxWxH): 3,500 x 1,400 x 1,910 mm Machine weight: 3,000 kg Heating capacity: 8.12 kW Pump motor power: 11 kW Power supply: 400V, 50Hz, standard industrial three-phase connection Equipment: documentation included If you have any additional questions or need more information, please send us a message or call us.

Condition: like new (used), Year of construction: 2003, For sale complet MC 4 control for Krauss-Maffei machines, tested and full in function ! Codpfx Ajikfmhsi Sjrh

Condition: used, functionality: fully functional, Used KraussMaffei injection molding machine KM 65-160 C2, manufactured in 2002, with extensive temperature control and a separate Frigel Microgel process chiller. Csdpsz Aln Asfx Ai Ssrh Manufacturer: KraussMaffei Type: KM 65-160 C2 Machine type: Injection molding machine Year of manufacture: 2002 Machine number: 641741 Order number: 646746/1 Clamping force: 650 kN / 65 t Machine weight: 3,200 kg Operating hours: 91,836:45 h Operating voltage: 400 V Phases: 3 Frequency: 50 Hz Total current: 153 A Motor current: 30 A Main fuse: 160 A Temperature control: Multiple temperature control circuits Part removal: Conveyor belt Process chiller manufacturer: Frigel Firenze S.p.A. Process chiller model: Microgel RCD80/12HP Year of manufacture of process chiller: 2012 Serial number of process chiller: 1205114 Voltage: 400 V Auxiliary voltage: 110 V Frequency: 50 Hz Max. current draw: 29 A Refrigerant: R407C Refrigerant charge: 2.4 kg Max. high pressure: 27 bar Max. low pressure: 19 bar Medium: Water Temperature range: -5 to +90 °C Max. pressure water circuit: 8 bar Weight: 240 kg Available from APRIL 2027

Condition: excellent (used), Year of construction: 2002, Krauss Maffei Injection Moulding Machine KM 420-2700 C2 Year of manufacture: 2002 Machine Description The Krauss Maffei KM 420-2700 C2 injection moulding machine is a robust and precise unit with a high clamping force of 4200 kN, designed for processing thermoplastics. Equipped with a reliable hydraulic system and a precision control system, it ensures stable and repeatable operation in demanding production environments. Technical Data Clamping Unit Parameter Unit Value Clamping force kN 4200 Max. mould opening force kN 250 Moving platen travel force – opening kN 124 Moving platen travel force – closing kN 102 Platen dimensions (H × W) mm 1270 × 1200 Tie bar spacing (H × W) mm 800 × 800 Mould opening stroke mm 1020 Minimum mould height mm 380 Maximum daylight mm 1400 Ejector force (forward / backward) kN 95 / 48 Maximum mould weight kg 6700 Injection Unit Parameter Unit Value Screw diameter mm 70 L/D ratio - 20 Injection pressure bar 1829 Shot volume cm³ 1097 Shot weight (PS) g 998 Injection speed cm³/s 513 Max. plasticising rate g/s 108 Nozzle contact force kN 173 Electrical and Hydraulic Equipment Parameter Unit Value Rated pump motor power kW 75 Csdpfx Aoxq Akksi Sjrh Installed heating power kW 36 Number of heating zones – barrel - 7 Oil tank capacity l 1075 Dimensions and Weight Parameter Unit Value Machine dimensions (L × W × H) m 7.06 × 2.33 × 2.51 Total machine weight kg 20,500

Year of construction: 2016, condition: ready for operation (used), A total of 9 partly dismantled Krauss Maffei injection molding machines are available. 1) Krauss Maffei 175-520-390 CZ, year of manufacture: 2008. 2) Krauss Maffei 650-1000-520 CZ, year of manufacture: 2008. 3) Krauss Maffei 110-380 CX, year of manufacture: 2016. 4) Krauss Maffei 420-700-520 CZ, year of manufacture: 2008. 5) Krauss Maffei 650-1000-520 CZ, year of manufacture: 2008, missing electrical parts. 6) Krauss Maffei 650-1000-520 CZ, year of manufacture: 2008. 7) Krauss Maffei 850-1400-1000 MX Z, year of manufacture: 2012, missing electrical and mechanical parts. 8) Krauss Maffei 110-380 CX, year of manufacture: 2016, missing electrical parts. All injection molding machines include robots from Kuka, Krauss Maffei, Sar, or Sepro. On-site inspection is possible. Cjdpfx Asugmx Aji Serh

Condition: good (used), Year of construction: 2004, clamping force: 300 kN, screw diameter: 60 mm, clearance between the columns: 630 mm, injection pressure: 2,000 bar, injection weight: 618 g, mold height (min.): 330 mm, plate width: 1,050 mm, plate height: 1,035 mm, overall weight: 12,000 kg, Robot W 621-ß077 x/y/z: 550/1200/2530 mm C-axis: max. rotation 90° Core pulls: yes Hot runner controller IMM 8 Control system: MC 4 Crodjzyfw Espfx Ai Soh

Year of construction: 2000, condition: ready for operation (used), Clamping force: 3000kN, stroke volume: 1047cm³, shot weight: 953g, injection pressure: 1778bar, screw diameter: 70mm, tie-bar spacing: 630mm, opening stroke: 1150mm, ejector stroke: 200mm, installation height: 330mm, platen width: 1050mm, platen height: 995mm. Machine dimensions X/Y/Z: approx. 6250mm/2050mm/2400mm, weight: approx. 12500kg. Documentation available. An on-site inspection is possible. Codpozcyqtefx Ai Sorh

Condition: excellent (used), Year of construction: 2021, operating hours: 5,646 h, functionality: fully functional, clamping force: 800 kN, screw diameter: 40 mm, clearance between the columns: 420 mm, displacement volume: 201 cm³, plate length: 670 mm, plate height: 670 mm, total length: 4,300 mm, total width: 1,600 mm, total height: 2,000 mm, overall weight: 3,900 kg, Equipment: documentation/manual, KraussMaffei KM 80-380 CX Stock No.: 503703 Manufacturer: KRAUSS MAFFEI Type: KM 80-380 CX Control System: MC6 Year of Manufacture: 2021 Operating Hours: 5646 h Technical Data - Clamping Unit Clamping Force: 800 kN Tie Bar Spacing h x v: 420 x 420 mm Platen Size h x v: 670 x 670 mm Minimum Mold Height: 250 mm Maximum Mold Height: 750 mm Opening Stroke: 500 mm Ejector Stroke: 150 mm Ejector Force: 43 kN Centering of Moving Platen D: 125 mm Centering of Fixed Platen D: 125 mm Technical Data - Injection Unit Screw Diameter: 40 mm Injection Volume: 201 cc Injection Pressure: 1860 bar Screw Length: 20 l/d Cedsz Ayi Uepfx Ai Serh Free Injection Flow Rate: 295 g/s Number of Heating Zones: 5 Dimensions & Weight Machine Dimensions L x W x H: 4.3 m x 1.6 m x 2 m Total Weight: 3900 kg Equipment 3 freely programmable inputs and outputs Screen text: German Screen text: Polish CEE socket 16A CEE socket 32A Increased ejector force Hydraulic core pull 1x Air valve 1x Machine with material hopper Machine with water manifold Leveling elements Plasticizing unit, highly wear-resistant and corrosion-resistant BDE interface Interface for color dosing unit USB interface Schuko socket 10A

Condition: like new (used), Year of construction: 2008, operating hours: 24,600 h, functionality: fully functional, clamping force: 1,600 kN, screw diameter: 50 mm, clearance between the columns: 520 mm, mold height (min.): 300 mm, overall weight: 6,600 kg, Equipment: documentation/manual, Here, we offer the following well-maintained used injection molding machine as part of our injection molding machine trade: We also purchase well-maintained injection molding machines, starting from the current model year 2010. We have been a wholesaler of used injection molding machines for over 25 years. Due to recent developments - tax information and advantage for the used machine: From July 1, 2025, used machines can also be considered for tax purposes with a special depreciation of 30% annually. In addition to the lower price compared to a new machine, you can claim the same depreciation amounts as with a new machine. Keyword: Growth booster, (§ 7 paragraph 2 EStG-E) Credpfx Asz A Iarei Seh Manufacturer: KraussMaffei Type: KM 160-750 Control: MC5 Year: 2008 Machine No.: 61011790 Operating Hours: 24,600 h Injection Unit Injection unit/screw: 50 mm Injection volume: 393 ccm Injection weight: 358 g Heating zones: 5 Nozzle stroke: 350 mm Injection pressure: 1892 bar Heating power: 16 kW Clamping Unit Tie bar spacing: 520 x 520 mm Platen size: 820 x 845 (h x v) Clamping force: 160 tons / 1600 kN Opening stroke: 650 mm Maximum platen distance: 950 mm Minimum tool mounting height: 300 mm Ejector stroke: 150 mm Weight: 6,600 kg Pump motor: 22 kW Dimensions: approx. 4.90 m × 1.60 m × 2.10 m Extras -Wedge shoe machine mounting -Hydraulic screw back-rotation lock -Hydraulic screw drive with standard speed -Pneumatic valve 1 on the operator side for blowing function (1 piece 5/2-way valve with 1 solenoid coil). -Control selectable: stroke/time or time/time. Quantity can be manually adjusted via 1 throttle valve at the valve outlet. -Nozzle protection door on the operator side, hinged -Ejector area protection door on the operator side, hinged -Mechanical interface according to EUROMAP 18 for handling device on the non-operator side (with intermediate plate up to and including KM 500) -End position "rear" of the ejector and the tool ejector plate monitored in sequence -Chrome-plated tie bars for the clamping unit and injection unit -Media monitor in the pump room for oil pan monitoring -Enlarged oil cooler for a maximum water supply temperature of 31°C. -Hydraulic core pull control 1-way on the non-operator side. -Water manifold 8-way -12 temperature control points for tool hot runner. Self-optimizing three-point PID controller with accuracy class 0.5. -Ejection of the cooled nozzle tip -Fan on the control cabinet -Power supply system: TN-C or TN-C-S or TN-S system (three-phase networks with a separately routed neutral conductor or a neutral conductor routed together with the earth conductor) -1 service socket 1-phase 10 A in the control cabinet, connected before the main switch in a country-specific version. -Signal interface according to EUROMAP 67 with fault signal and power supply socket CEE 16 A for handling device. -Event log for continuous recording and retrospective analysis -Quality monitoring package: Process monitoring (cycle actual values and integrals) by specifying tolerance bands, actual value display, actual value storage. Documentation can be printed. -Z-cycle time analysis, cycle storage -Language: German, Greek Visible peripherals are not included in the scope of supply. Free loading ex our warehouse in Hanover - worldwide delivery possible on request. Inspection under power possible by arrangement.

Condition: ready for operation (used), Year of construction: 2011, operating hours: 42,519 h, clamping force: 5,000 kN, screw diameter: 100 mm, controller manufacturer: KRAUSS MAFFEI, controller model: MC5, Hydraulic injection moulding machine manufactured in 2011. This Krauss Maffei 500-4300 CX features a clamping force of 500 t and a screw diameter of Ø 100 mm. It has a maximum mould opening of 1530 mm and tie bar spacing of 900 × 800 mm. If you are looking to get high-quality injection moulding capabilities, consider the Krauss Maffei 500-4300 CX machine we have for sale. Contact us for further details. Crodpfxsy Tai Eo Ai Soh • PP injection capacity: 1.5 kg • Mould dimensions, min.: 480 mm • Tie bar spacing (H × V): 900 × 800 mm • Maximum mould opening: 1530 mm

Condition: ready for operation (used), Year of construction: 2001, General Data Measurements height 405 mm Cedpfx Aiex D Ea Is Sorh Dimensions Machine Length 405 mm Clamping Unit Clamping force 800 kN This Krauss Maffei 80-220 C1 was manufactured in 2001. It features a clamping force of 800kN and a mold opening force of 55kN. The machine includes a robot, although it has a vacuum malfunction. Ideal for those looking to enhance their production capabilities in injection moulding. Contact us for more information about this machine. Application Types Injection Moulding

Condition: good (used), Year of construction: 2002, 1,0 St. gebr. Spritzgießmaschine Hersteller: KRAUSS MAFFEI Typ: KM575-1900C2 Baujahr: 2002 Schließkraft: 575 Tonnen Holmabstand 1000 x 1097 mm Cedpjyak Htefx Ai Sorh Schnecken DN: 70 mm Max. Hubvolumen: 1.097 cm³ Spritzteilgewicht: 998 g/PS Steuerung: MC4 Ausstattung: 5 St. Kernzug Roboter, Hersteller: Reis, Baujahr: 2015 24- Fach Heisszonenkanalregelung Förderband Schutzzaun