Beli Krauss Maffei bekas (191)

Kondisi: bekas, Tahun pembuatan: 1998, jam operasional: 62.655 h, Fungsionalitas: berfungsi sepenuhnya, nomor mesin/kendaraan: 16H414H7, gaya penjepit: 16.000 kN, diameter sekrup: 135 mm, jarak antara tiang: 1.800 mm, volume langkah: 6.945 cm³, tekanan injeksi: 1.931 batang, tinggi cetakan (min.): 900 mm, berat keseluruhan: 120.000 kg, Perlengkapan: dokumentasi / manual, Mesin KM 1600T dalam kondisi baik untuk dijual, tua namun terawat dan dapat diandalkan. Termasuk pengering (2 unit 800l), hopper, konveyor + screw 120mm! Prodpfx Ajw Ti U Aob Hsc

Kondisi: baru, Tahun pembuatan: 2024, Fungsionalitas: berfungsi sepenuhnya, nomor mesin/kendaraan: 61037426, gaya penjepit: 2.500 kN, diameter sekrup: 60 mm, volume langkah: 792 cm³, tekanan injeksi: 2,42 batang, berat injeksi: 721 g, tinggi cetakan (min.): 250 mm, gaya ejektor: 47.000 N, lintasan ejektor: 200 mm, langkah pembukaan: 1.250 mm, tinggi pemasangan: 700 mm, panjang total: 8.230 mm, lebar total: 2.320 mm, tinggi total: 2.210 mm, berat keseluruhan: 19.500 kg, kapasitas pemanasan: 292 kW (397,01 hp), jenis penggerak: Vollelektrisch, bentang bebas: 735 mm, berat alat: 3.700.000 g, Injection molding machines directly from the manufacturer! As the manufacturer KraussMaffei, we offer you here our tested and flexible stock machines: The fully electric PX series is the answer to your requirements for greater flexibility with ever-increasing productivity. Robust mechanics, highly precise and dynamic drive technologies, as well as intelligent energy management, make the PX a reliable, productive, and efficient performer in any injection molding operation. Ergonomically optimized working height, maximum clearance under the clamping unit, and excellent accessibility ensure maximum operator convenience. The PX series impresses with its flexibility throughout its entire service life. TECHNICAL DATA: KM 251 / 2000 PX G02 (Order 38621992) CONTROL SYSTEM • MC6 with 20.5" TFT color monitor and multitouch functionality CLAMPING UNIT • Clamping force kN 2500 • Max. mold opening force kN 375 • Clear space (h x v) mm 735 x 685 • Mounting platen (h x v) mm 1000 x 950 • Min. - max. mold installation height mm 250 – 700 • Maximum opening stroke mm 1250 • Maximum mold opening stroke mm 550 • Ejector drive Hydraulic Pedjuaavzspfx Ab Herc • Ejector stroke mm 200 • Ejector force forward/return kN 47 / 22.5 • Ejector speed forward/return mm/s 350 / 350 • Max. mold weight kg 3700 INJECTION UNIT • Screw diameter / type mm 60 / Standard • Effective L/D ratio 23.3 • Injection pressure bar 2420 • Stroke volume cm³ 792 • Shot weight at max. stroke (PS) g 721 • Injection speed mm/s 125 • Injection flow cm³/s 353 • Screw drive / speed rpm 327 • Plasticizing rate g/s 82.8 • Nozzle contact force kN 57 ELECTRICAL PARAMETERS • Connected load kW 63.5 • Installed heating capacity kW 29.2 • Power supply V / Hz 400 / 50 WEIGHT AND DIMENSIONS • Net weight with control cabinet t 19.50 • Length x width x height m 8.23 x 2.32 x 2.21 OPTIONS & ACCESSORIES • Enlarged mold opening stroke • Wear-resistant plastification (ZE23.03) • Hydraulic core pulls 2+2-fold • Pneumatic core pulls 1+1-fold • Air valves 1+1-fold • Pneumatic cascade 4-fold • Euromap interfaces E18, E67, E77 • Water manifold 4-fold • Hot runner controllers 12-fold • Adaptive Process Control (APC) The machine is located at our facility in Parsdorf and is available at short notice. Further optional features available on request. We look forward to your inquiry.

Tahun pembuatan: 2011, Kondisi: siap digunakan (bekas), Working area: 2800x1600 mm, swivel angle: 90°, parallel stroke: 150 mm, clamping force: 700 kN, connected load: 50 kW, including documentation. Prodoh Nm S Hjpfx Ab Hoc

Kondisi: diremajakan ulang (bekas), Fungsionalitas: berfungsi sepenuhnya, Gearbox KMD-2-90 Krauss Maffei, sudah direkondisi total Predpfsw Ixhbsx Ab Hjc Kami menawarkan gearbox reduksi dan distribusi original Krauss Maffei untuk KMD 2-90-20D atau KMD 2-90-23D. Gearbox telah direkondisi total dengan banyak suku cadang baru dari Krauss Maffei.

Kondisi: sangat baik (bekas), Tahun pembuatan: 2011, jam operasional: 28.000 h, Fungsionalitas: berfungsi sepenuhnya, gaya penjepit: 1.300 kN, For sale is a hybrid injection molding machine, 2-component, manufactured by KraussMaffei, model KM 130-750 CX. The machine is in excellent condition, immediately operational, and has low operating hours. It features an electronic injection and dosing unit, along with a hydraulic clamping unit. Technical data: Year of manufacture: 2011 Operating hours: 28,000 h Clamping force: 130 t Cylinder Ø 30 mm / 40 mm (plus 2*50 mm additionally) Core pull: 1*Hydraulic Needle shut-off: Pneumatic Pjdpju Hxm Uofx Ab Hjrc Tie bar extension: 160 mm Cavity pressure sensor Selector valve Transport and loading can be organized Europe-wide upon request and for an additional charge. All prices are subject to VAT. Inspection possible by appointment. Contact us—our team will be glad to assist you. Trade-in or exchange possible! Machinery Buying & Selling PURCHASE / SALE OF PRODUCTION & METALWORKING MACHINERY AND MORE Are you looking for a high-quality yet affordable metalworking machine for your production? Or would you like to sell yours? For further information or contact options, please visit our website.

Kondisi: siap digunakan (bekas), Used machine Injection Moulding Machine Manufacturer: Krauss Maffei Model: KM 80 C1 Year of manufacture: 2000 Only 1 machine left in stock No lead time, available immediately Inspection possible by appointment The machine is currently not powered / No cooling water connection The machine is professionally stored Technical data: Psdpfsu Ti Srex Ab Horc Clamping force (kN): 800 Mounting plate (mm): 610×610 Tie bar spacing (mm): Installation height (mm): 250 Clearance between plates (mm): 750 Control system: MC4 Display language: German Injection unit screw diameter (mm): 45 Injection pressure (bar): 1878 Stroke volume (cm³): 275 Pump drive power (kW): 18.5 Heating power (kW): 13 Oil capacity (l): 270 Dimensions (m): 4.3 x 1.4 x 2.1 Total weight: 3.2 t Further photos on request.

Tahun pembuatan: 2010, Kondisi: sangat baik (bekas), Krauss Maffei KM 180 – 750 AX Injection Moulding Machine Fully electric machine Year of manufacture: 2010 MC5 control system with colour monitor, integrated control panel, and built-in disk drive. Plasticizing unit Complete plasticizing unit for thermoplastics with 50 mm screw diameter Pjdon Atndjpfx Ab Hsrc TECHNICAL SPECIFICATIONS Clamping Unit - Clamping force: 1,760 kN - Platen dimensions (H x V): 790 x 740 mm - Distance between tie bars (H x V): 560 x 510 mm - Max. mould opening stroke: 450 mm - Min./max. mould height: 200/600 mm - Platen opening stroke: 1,050 mm - Ejector stroke: 130 mm - Ejector force: 49 kN Injection Unit - Screw diameter: 50 mm - L/D ratio: 20.2 - Injection pressure: 1,892 bar - Injection volume: 393 cm³ - Shot weight for PS: 357 g - Injection rate: 314 cm³/s - Max. screw speed: 320 rpm - Nozzle contact force: 29.4 kN Electrical Parameters - Connected load: 38 kW - Heater power: 15.6 kW - Number of barrel heating zones: 5 - Dry cycle time according to Euromap 6: 1/h 2,000 - Dry cycle time according to Euromap 6: 1.8 s Weight and Dimensions - Net weight with control cabinet: 6.5 t - Machine dimensions (L x W x H): 6.07 x 1.92 x 2.01 m

Tahun pembuatan: 1996, Kondisi: siap digunakan (bekas), Throughput capacity: 140–180 kg/h, screw diameter: 50–103 mm, screw length: 1300 mm, max. screw speed: 43 rpm, connected load: 25 kW, operating hours: 62,590 h, including dosing unit with hopper, vacuum pump, cylinder cooling unit, and screw temperature control. Predpfx Abjhz Dyae Hec

Kondisi: baik (bekas), Tahun pembuatan: 1997, jam operasional: 92.000 h, Fungsionalitas: berfungsi sepenuhnya, gaya penjepit: 1.250 kN, berat keseluruhan: 6.300 kg, Krauss Maffei KM125-520 C1 injection moulding machine for sale. Includes SEPRO robot. Equipped with shut-off nozzle and Stäubli quick-clamping system. Clamping unit: Prodsw Hyd Nspfx Ab Hoc Clamping force: 1,250 kN Max. mould opening force: 70 kN Travel force, moving platen open: 35 kN Travel force, moving platen close: 28 kN Mounting platen (H x V): 745 x 770 mm Clear space (H x V): 470 x 470 mm Mould opening stroke: 600 mm Minimum mould installation height: 300 mm Opening width: 900 mm Ejector stroke: 150 mm Ejector force, forward/back: 22/10 kN Injection unit: Screw diameter: 40 mm L/D ratio: 23 Injection pressure: 2377 bar Stroke volume: 217 cc Shot weight (PS): 198 g Injection flow rate: 126 cc/s Screw speed: 307 rpm Electrohydraulic equipment: Pump motor rated power: 18.5 kW Installed heating capacity: 13 kW Cylinder heater control zones: 5 Oil fill: 345 l Dimensions and weight: Installation space approx. 4.50 x 1.60 x 2.20 m Total weight approx. 6,000 kg Max. mould weight: 1,485 kg If you have any further questions, please feel free to contact us at any time.

Kondisi: sangat baik (bekas), Tahun pembuatan: 2007, Injection Moulding Machine Krauss Maffei KM 800 – 12000 MX Year of manufacture: 2007 Clamping Unit: - Clamping force: 8,000 kN - Mold opening force: 560 kN - Platen dimensions (h x v): 1,600 x 1,530 mm - Tie bar spacing (h x v): 1,120 x 1,000 mm - Mold open stroke: 1,600 mm - Mould mounting height (min - max): 500–1,100 mm - Platen stroke: 2,100 mm - Ejector stroke: 300 mm - Ejector force: 200/100 kN Injection Unit: - Screw diameter: 135 mm - Injection pressure: 1,389 bar - Injection volume: 8,588 cm³ - Shot weight for PS: 6,098 g - Screw speed, standard/option: 121/153 rpm - Injection capacity (standard) Psdpfxjvcpdre Ab Hjrc Electrical and Hydraulic Equipment: - Rated pump motor power: 110 kW - Installed heating capacity: 57 kW - Number of heating zones (barrel): 7 - Dry cycle time per Euromap: 965 1/h - Oil tank capacity: 1,500 l Dimensions and Weight: - Net weight incl. control cabinet: 45 t - Machine dimensions (L x W x H): 10.81 x 2.92 x 2.51 m

Tahun pembuatan: 2022, Kondisi: siap digunakan (bekas), A like-new injection moulding machine including a robot is available. 1) Injection moulding machine Krauss Maffei, year of manufacture: 2022, clamping system: hydromechanical clamping system with two-platen design. Plasticising unit: 8100, screw diameter: 105mm, nozzle radius: 35mm, nozzle bore: 6mm, clamping force: 1700t, control system: MC6. 2) Industrial robot Kuka IR 1200 R3100.2 F/K, max. payload: 120kg, reach: 3100mm, repeatability: +/-0.05mm, control system: KR C5. Documentation available. Inspection on site is possible. Podpevpvlcsfx Ab Horc

Kondisi: baik (bekas), Tahun pembuatan: 1999, Krauss Maffei Injection Moulding Machine KM 420 - 2700 C1 • Year of manufacture: 1999 Technical Data Clamping Unit • Clamping force: 4200 kN • Max. mould opening force: 250 kN • Movable platen force (opening): 124 kN • Movable platen force (closing): 102 kN • Mould platen dimensions (W x H): 1270 mm x 1200 mm • Tie bar spacing (W x H): 800 mm x 800 mm Prjdpfx Aewqd Aqeb Hsc • Mould opening stroke: 1020 mm • Minimum mould height: 380 mm • Max. daylight: 1400 mm • Ejector force (forward/backward): 95 / 48 kN Injection Unit • Screw diameter: 80 mm • L/D ratio: 20 • Injection pressure: 1829 bar • Shot volume: 1433 cm³ • Shot weight (PS): 1304 g • Injection rate: 513 cm³/s • Max. plasticising capacity: 108 g/s • Nozzle contact force: 173 kN Electrical and Hydraulic System • Pump motor power: 75 kW • Installed heating power: 36 kW • Number of barrel heating zones: 7 • Oil tank capacity: 1075 l Dimensions and Weight • Machine dimensions (L x W x H): approx. 7.06 m x 2.33 m x 2.51 m • Total machine weight: 20,500 kg

Tahun pembuatan: 2002, Kondisi: siap digunakan (bekas), Clamping force: 2,500 kN, clear tie bar spacing: 630 mm/630 mm, opening stroke: 1,150 mm, minimum mould installation height: 330 mm, screw diameter: 60 mm, specific injection pressure: 2,000 bar, max. shot volume: 670 cm³, connected load: 74 kW, control system: MC4. Machine dimensions: 5,700 mm / 2,200 mm / 2,300 mm, machine weight: 12.5 t, operating hours: 47,572 h. Available from February 2025, including special accessories: Krauss Maffei LRX-S 100, 8x hot runner controllers, 4x core pulls, blow-out unit, accumulator, hydraulic tie bar withdrawal unit, energy-saving circuit, ALS interface, 20mA interface, and color dosing unit interface. On-site inspection possible, documentation available. Prsdouiykdjpfx Ab Hsc

Kondisi: sangat baik (bekas), Tahun pembuatan: 2019, Plastification unit Krauss Maffei CX machine screw diameter: 50 mm injection volume: 432 ccm Pedov Au T Eepfx Ab Hsrc injection weight: 393 g practically new – used only for testing purposes in the tool shop

Tahun pembuatan: 2011, Kondisi: siap digunakan (bekas), Two identical injection molding machines are available: 1x Krauss Maffei KM 420/6 2K, 420-1400-750 CXW, and 1x KM 420/7 2K, 420-1400-750 CXW. Clamping force: 420 t, screw diameter: 55/40 mm, weight: 23.49 t, operating hours: 84,000 / 79,000 h. Machine 1 is operational; machine 2 is non-operational due to a fault in the safety circuit. An extensive spare parts package is also included. On-site inspection is possible. Prodpfx Aswcf Sdjb Hoc

Kondisi: sangat baik (bekas), Tahun pembuatan: 2006, Krauss Maffei Injection Moulding Machine KM 800 – 12000 MX Year of manufacture: 2006 Clamping unit: - Clamping force: 8,000 kN - Mould opening force: 560 kN - Platen dimensions (h x v): 1,600 x 1,530 mm - Tie bar clearance (h x v): 1,120 x 1,000 mm - Mould opening stroke: 1,600 mm - Mould height (min - max): 500–1,100 mm - Platen opening distance: 2,100 mm - Ejector stroke: 300 mm - Ejector force: 200/100 kN Injection unit: - Screw diameter: 135 mm - Injection pressure: 1,389 bar - Injection volume: 8,588 cm³ Pedpetmq Aksfx Ab Hjrc - Shot weight (PS): 6,098 g - Screw speed, standard/option: 121/153 rpm - Injection rate (standard) Electrical and hydraulic equipment: - Rated pump drive power: 110 kW - Installed heater power: 57 kW - Number of barrel heating zones: 7 - Dry cycle time according to Euromap: 965 cycles/h - Oil tank capacity: 1,500 l Dimensions and weight: - Net weight incl. control cabinet: 45 t - Machine dimensions (L x W x H): 10.81 x 2.92 x 2.51 m

Tahun pembuatan: 2002, Kondisi: siap digunakan (bekas), A large-format injection moulding machine Krauss-Maffei, without robot, conveying equipment, safety enclosure, or attachments, is available. Clamping force: 1300t, injection volume: approx. 8,000cm³. Overall system dimensions (L/W/H): approx. 13,000mm / 3,550mm / 2,850mm. Machine weight: approx. 83,000kg. Operating hours: 73,259h, production hours: 57,753h. Documentation available. On-site inspection possible. Expected availability from Q1/2026. Psdpfx Abewut Hye Hjrc

Kondisi: seperti baru (mesin pameran), Tahun pembuatan: 2023, Krauss Maffei Injection Moulding Machine KM 120-380 PX Year of manufacture: 2023 Fully electric machine Five-point double toggle clamping unit (three-platen design) with servo-electric drive. Injection unit with servo-electric drive for injection and plasticizing, and servo-hydraulic drive for the movement of the entire injection unit. MC6 control system based on industrial computer with real-time Ethernet technology. Plasticizing unit: Complete plasticizing system for thermoplastics with HPS-M screw, diameter 40 mm Nozzle radius 10 mm, nozzle orifice 4 mm MACHINE TECHNICAL DATA Clamping Unit: - Clamping force: 1200 kN - Mold opening force: 180 kN - Clamping plate dimensions (h x v): 640 x 590 mm - Tie-bar spacing (h x v): 470 x 420 mm - Mold opening stroke: 400 mm - Min.-max. mold height with option 45.468: 180 - 550 mm - Opening width with option 45.468: 950 mm - Ejector stroke: 175 mm - Ejector force forward/backward: 22 / 10 kN - Ejector speed: 350 mm/s Injection Unit: - Screw diameter: 40 mm - L/D ratio: 20 - Injection pressure: 1860 bar - Injection volume: 201 cm³ - Shot weight (PS): 183 g - Injection speed: 125 mm/s - Injection rate: 157 cm³/s - Screw speed: 334 rpm - Plasticizing rate (PS): 24.7 g/s - Torque: 337 Nm Prsdpfxevgdume Ab Hsc - Nozzle contact force: 34 kN Electrical parameters: - Connected load: 13.8 kW - Protection: 63 A - Installed heater capacity: 11.5 kW - Number of barrel heating zones: 5 - Dry cycle time / stroke per Euromap 6: 1.5 s / 329 mm - Oil tank capacity: 120 l Weight and dimensions: - Net weight with control cabinet: 6.9 t - Machine dimensions (L x W x H): 5.3 x 1.60 x 1.88 m

Tahun pembuatan: 1998, Kondisi: siap digunakan (bekas), Clamping force: 500 kN, screw diameter: 30 mm, injection volume: 101 cm³, shot weight: 92 g, injection pressure: 1488 bar, platen dimensions X/Y: 540 mm/540 mm, tie bar distance: 321 mm, mold opening stroke: 350 mm, mold height min./max.: 200 mm/550 mm, weight: approx. 2300 kg. Includes 1 hydraulic core pull. Prodpfotw Durjx Ab Hjc

Kondisi: sangat baik (bekas), Tahun pembuatan: 2015, Krauss Maffei KM 900 – 8100 GX Injection Moulding Machine Year of manufacture: 2015 Podpfx Ajwyxbgob Hsrc General Description: Hydraulic-mechanical, two-platen clamping system with 4 pressure pads on the fixed platen and 4 adjustment units on the moving platen. The machine is equipped with a PV-type injection unit adjustment system (proportional valve). Control is handled via the modern MC6 system, based on an industrial-grade computer with real-time Ethernet technology. The control panel is an integrated 19-inch touchscreen with a colour display, LED backlighting, and process visualisation using ProcessDesigner. Plasticising Unit: Complete unit for thermoplastics processing Wear-resistant (abrasion-protected) version Screw diameter: 105 mm Non-return valve and open nozzle Technical Specifications: Clamping Unit: Clamping force: 9,000 kN Mould opening force (pressure pads): 630 kN Platen dimensions (W x H): 1660 x 1530 mm Tie bar spacing: 1180 x 1000 mm Max. mould opening stroke: 1600 mm Mould height (min – max): 500 – 1100 mm Max. opening stroke: 2100 mm Ejector stroke: 300 mm Ejector force (forward / return): 140 / 70 kN Injection Unit: Screw diameter: 105 mm L/D ratio: 23.0 Injection pressure: 1778 bar Injection volume: 4546 cm³ Shot weight (for PS): 3228 g Injection rate: 805 cm³/s Screw speed (standard): 150 rpm Nozzle contact force: 166 kN Electrical and Hydraulic Equipment: Pump motor power: 120 kW Heater power: 59 kW Number of barrel heating zones: 7 Dry cycle time / stroke (Euromap 6): 3.3 s / 826 mm Dry cycle time / stroke (KM standard): 2.9 s / 590 mm Hydraulic oil tank capacity: 1450 l Dimensions and Weight: Net weight (with control cabinet): 40 tons Machine dimensions (L x W x H): 10.72 x 3.03 x 2.51 m

Tahun pembuatan: 2005, Kondisi: siap digunakan (bekas), Flange diameter: 160 mm, clamping force: 1,600 kN, tie bar spacing: 520 mm x 520 mm, min. mold diameter: 350 mm, min. mold installation height: 300 mm, opening stroke: 650 mm, daylight between platens: 950 mm, ejector stroke: 150 mm. Screw diameter: 45 mm, injection pressure: 2,336 bar, shot volume: 318 cm³, nozzle radius: 15 mm, injection volume: 134 cm³, injection weight: 289 g. Machine dimensions (L/W/H): approx. 4,900 mm x 1,600 mm x 2,200 mm, weight: approx. 7,400 kg, operating hours: approx. 71,187 h. The machine has an unknown defect. Documentation available. On-site inspection possible. Prodpfxeuabq Ts Ab Hsc

Tahun pembuatan: 2015, Kondisi: siap digunakan (bekas), A complete pultrusion line is available, including three Krauss Maffei RimStar Nano metering machines, three cutting frames, an ABUS pillar slewing crane, and a KraussMaffei EW 2300 CFI winder. Pulling force: 10t, maximum profile dimensions: 300x50mm, maximum speed: 4m/min. On-site inspection is possible. Pjdpfx Aeriurbsb Hsrc

Tahun pembuatan: 2016, Kondisi: siap digunakan (bekas), A total of 9 partially dismantled injection moulding machines from Krauss Maffei 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 components. 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 components. All injection moulding machines include robots from Kuka, Krauss Maffei, SAR, or Sepro. Documentation available. On-site inspection possible. Prodpfx Asugmx Ajb Hec

Tahun pembuatan: 2008, Kondisi: siap digunakan (bekas), Clamping force: 1,100 kN, screw diameter: 35 mm, shot weight: 140 g, injection volume: 154 cm³, injection pressure: 2,429 bar, max. cylinder temperature: 375°C, weight: approx. 8,000 kg, control system: MC 5 3.0, operating hours: 25,271 h, pump hours: 29,098 h. Includes one linear robot KM LRX 150, travel range X/Y/Z: 900 mm / 1,200 mm / 3,000 mm, payload: 15 kg. Documentation available. Inspection on site is possible. Pjdpowz N Tvofx Ab Hjrc

Tahun pembuatan: 1998, Kondisi: siap digunakan (bekas), Clamping force: 1500 kN, screw diameter: 50 mm, tie bar spacing: 500 mm, platen dimensions (X/Y): 780 mm / 790 mm, opening stroke: 600 mm, daylight: 900 mm, ejector stroke: 150 mm, shot volume: 305 cm³, shot weight: 278 g, injection pressure: 2336 bar. Machine dimensions (X/Y/Z): approx. 4700 mm / 1550 mm / 2200 mm, weight: approx. 7000 kg, control system: MC4. Includes Sepro handling system. Documentation available. On-site inspection possible. Pedjw Hthzepfx Ab Herc