Beli Mikron Wf 51 C/150 bekas (63.994)

Kondisi: sangat baik (bekas), Tahun pembuatan: 2001, nomor mesin/kendaraan: 184686, gaya penjepit: 1.000 kN, diameter sekrup: 25 mm, jarak antara tiang: 420 mm, volume langkah: 54 cm³, berat injeksi: 45 g, langkah pembukaan: 500 mm, Dijual mesin injeksi merek Arburg tipe 420 C 1000-150/60. Mesin dalam kondisi teknis tanpa masalah dan sangat terawat. Data teknis: Tahun pembuatan: 2001 Gaya penjepit: 1000 kN Jarak antar kolom cahaya: 420 x 420 mm Jarak buka: 500 mm Tinggi pemasangan cetakan: 250 mm Pelat penjepit cetakan: 570 x 570 mm Jarak ejektor: 175 mm Diameter screw: 25 mm Volume suntikan teoritis: 54 cm³ Nedpfxjx Itame Am Aowf Berat suntikan: 45 g/PS Mesin ditawarkan tanpa periferal. Meja putar, sistem pengumpan granulat, alat pengatur suhu, dan aksesori lainnya tidak termasuk.

Kondisi: baru, Pressure: 150 Motor: 15 Mounting height: 500 Max. stroke length: 400 Table size: 900 x 600 Ram surface: 900 x 600 Table height: 850 Dimensions (LxWxH): approx. 1300 + (300 control cabinet) x 2000 x 3200 Weight approx.: 8000 Oil filling: 400 Hydraulic C-Frame Press General information: Construction type: C-frame design, hydraulic Press force: 150 t at 240 bar Return force: 30 t at 150 bar Voltage: 400 V / 50 Hz Standards: Machinery Directive EN 693 Painting: RAL 7035 – Light Grey Nwedpfx Amjwzzzfs Aef Warranty: 12 months Dimensions (WxDxH): approx. 1300 + 300 mm control cabinet x 2000 x 3200 mm Total weight: approx. 8,000 kg Control system: Mode 1: Setup mode without light sensor Mode 2: Automatic mode (single stroke) with light sensor PLC Control: Siemens S7–1200 Safety PLC: SICK Swiveling operator panel with soft start Two-hand control (mobile) Light sensors: SICK 700 + 130 mm Stroke measurement system: Linear scale (500 mm) Touchscreen: 9“ Siemens, storage for up to 500 tool sets Remote maintenance: Secomea module 8 free inputs/outputs for external integration (e.g. robot, coil line) Work area lighting (dual) Hydraulic system: Main cylinder: Ø 270 mm Auxiliary cylinders: 2 x Ø 70 x 40 mm Auxiliary guides: 4 x Ø 50 mm Motor: 15 kW / 22 HP (IE3) Auxiliary motor: 2.2 kW / 3 HP Pump: 45 ccm, 65 l/min – REXROTH Auxiliary pump: available Tank volume: 500 l Oil volume: 400 l Air cooler for oil tank Hydraulic accessories: REXROTH hydraulic block & valves, prefill valve, hydraulic & mechanical ram safety lock (top dead center position) Pressure & speed adjustable via PLC Mechanical data: Mounting height: 500 mm (distance ram – table plate) Stroke length: 400 mm Mounting depth: 650 mm Throat: 350 mm Table height: 850 mm (floor to top of table plate) Plate dimensions: Table plate: 900 x 600 x 120 mm (with T-slots, customer-specific) Ram plate: 900 x 600 x 300 mm (with T-slots & spring welding) Speeds (adjustable via PLC): Approach: 120 mm/s Return: 140 mm/s Pressing phase: 13 – 5 mm/s Control & electronics: Main control cabinet Pressure & speed setting via PLC Swiveling operator panel Mobile two-hand control Light sensors SICK Stroke measurement system Screen: 9“ Siemens touchscreen Remote maintenance via Secomea module Safety & operation: Hydraulic proportional valves Dual-channel safety Side safety doors (sliding backwards) Operating manual & parts list (German), including maintenance schedule

Kondisi: baru, Fungsionalitas: berfungsi sepenuhnya, Tahun pembuatan: 2023, jam operasional: 11 h, kapasitas angkut: 200 kg, berat kosong: 6.700 kg, tinggi konstruksi: 1.970 mm, jenis bahan bakar: listrik, panjang total: 6.050 mm, jenis penggerak: Elektro, jangkauan lengan: 7.600 mm, lebar konstruksi: 1.500 mm, tinggi kerja: 15.000 mm, Articulating Boom Lift Condition: New unit Technical Condition: New Front Tyres Type: Solid rubber Front Tyres Condition: 80 - 100% Rear Tyres Type: Solid rubber Nwodpow Dkdbsfx Am Asf Rear Tyres Condition: 80 - 100% Battery Type: PzS Description: The Manitou 150 AETJ-C electric articulating boom lift is the lightest machine in its class, resulting in a relatively low ground pressure from its wheels. With a lifting capacity of 200 kg at a working height of up to 15 m, this self-propelled aerial platform is the ideal solution for your transport and maintenance operations. The drive battery can be frequently recharged and is characterised by a long service life. In transport mode, the 150 AETJ-C remains under a height of 2 m. Thanks to its compact design, storage space for this platform can be found very quickly.

Kondisi: bekas, Fungsionalitas: berfungsi sepenuhnya, Tahun pembuatan: 2013, jam operasional: 350 h, kapasitas angkut: 200 kg, berat kosong: 6.700 kg, tinggi konstruksi: 1.970 mm, jenis bahan bakar: listrik, panjang total: 6.050 mm, jenis penggerak: Elektro, jangkauan lengan: 7.600 mm, lebar konstruksi: 1.500 mm, tinggi kerja: 15.000 mm, Articulated Boom Lift Technical Condition: normal Nsdpfxoxuw Nvj Am Aewf Front Tires Type: solid rubber Front Tires Condition: 80 - 100% Rear Tires Type: solid rubber Rear Tires Condition: 80 - 100% Description: The electric articulated platform Manitou 150 AETJ-C is the lightest in its category and therefore exerts relatively low ground pressure with its wheels. With a lifting capacity of 200 kg at a working height of up to 15 m, this self-propelled work platform is the ideal solution for your transport and maintenance tasks. The drive battery can be recharged frequently and is characterized by its long service life. In transport mode, the 150 AETJ-C remains under a height of 2 m. Thanks to its compact design, this platform can be stored very quickly. Efficient work at height thanks to the powerful performance of the AETJ 150-C platform with articulated arm. This electric model for two operators offers a maximum working height of 15 meters and features a basket with a perforated floor, perfectly adapted to industrial requirements. With its articulated boom and robust construction, this machine can also operate in confined spaces. Navigate around all obstacles and save reaction time with the 150 AETJ-C. Thanks to the high autonomy of the work platform, you can work all day without needing to recharge the device.

Kondisi: bekas, Temperature controller, temperature sensor, temperature setting, temperature converter, temperature limiter, electronic temperature controller, temperature switch, thermostat, sensor, -Manufacturer: Trafag, unused thermostat/temperature switch, original packaging -Type: 471 2331 342 27 8319 0065 90 -Temperature range: 20 to 150 °C Nsdslc Uiispfx Am Aowf -Cable length: 3000 mm -Quantity: 2 pieces of thermostat available -Price: per piece -Package dimensions: 245/130/H80 mm -Weight: 1.1 kg/piece.

Kondisi: sangat baik (bekas), Temperature controller, temperature sensor, temperature setting, temperature converter, temperature limiter, electronic temperature controller, temperature switch, thermostat -Manufacturer: Danfoss, thermostat temperature switch unused, original packaging -Type: RT 107 17-1566 -Temperature range: 70 to 150 °C Nwsdpfxolc Uh Ej Am Aef -Quantity: 4 thermostats available -Price: per piece -Package dimensions: 280/130/H75 mm -Weight: 1.2 kg/piece.

Tahun pembuatan: 2020, jam operasional: 1 h, Kondisi: baru, - High-pressure cleaner PTC TORPEDO MINI-E 3.8 M 230/50 Powersteam and TORPEDO MINI-E 5.8 T 400/50 Powersteam, similar but not Dynajet, Oertzen, Falch, ... - Cold water / hot water / steam 32 bar up to 140°C / high-pressure steam 150 or 200 bar up to 150°C for cleaning and disinfection purposes The following models are available: Njdpfxsfh Skas Am Ajwf - TORPEDO MINI-E 3.8 M 230Volt/50Hz Powersteam 8 l/min at 150 bar - TORPEDO MINI-E 5.8 T 400Volt/50Hz Powersteam 8 l/min at 200 bar - Dimensions and empty weight: 110x64x98cm, approx. 150kg - Incl. 10 m high-pressure hose, spray pistol, lance, and 25° fan jet nozzle

Kondisi: baru, Tahun pembuatan: 2026, Your advantages Stable pressing mechanism with low-wear, chrome-plated clamp Wear-resistant pressing chamber sleeve Pre-compressor with end-position damped cylinder and bolted lid Control cabinet with PLC control system Screw channel with discharge auger Separate oil tank with pump motor and valve control Safety switch for oil temperature Mounted on a stable base frame with rubber feet Briquette length monitoring Robust construction, low-maintenance technology, minimal space requirements: The machines of the C series are especially suitable for small and medium-sized businesses whose required throughput does not exceed 50-80 kg/h or 200 to 400 kg/day. Virtually any suitable material can be briquetted, such as wood, polystyrene, foam materials, paper, or biomass. All machines are available in left-hand or right-hand versions. Mounting on a stable base frame ensures quick installation and enables mobile use. Briquette diameter (mm): 50 Max. throughput (kg/h): 50 (material-dependent) Hydraulic motor (kW): 5.5 Auger motor (kW): 0.55 Oil volume (liters): 100 Weight (approx. kg): 800 Outstanding features at a glance Hydraulics with separate oil tank: Temperature-monitored hydraulic unit, complete valve control, pump motor for long operating times Briquette length monitoring: Regulates briquette length to a consistent size Nedpfocnz U Ejx Am Aswf Press chamber wear sleeve: Prevents wear in the pressing area Location: Ex works - free loaded

Kondisi: sangat baik (bekas), en-GB Nwodpfx Amjtr Dins Ajf

Kondisi: baru, Tahun pembuatan: 2025, daya: 15 kW (20,39 hp), gaya penekanan: 160 t, lebar meja: 920 mm, panjang meja: 660 mm, kedalaman tenggorokan: 320 mm, gaya punching: 160 t, diameter silinder: 55 mm, masa garansi: 24 bulan, Perlengkapan: penghadang cahaya keselamatan, Excentric press is a type of mechanical press driven by a force generated through an eccentric mechanism, mainly used for cold forming operations such as punching, cutting, and die forming. Thanks to its high production speed and repeatability, it serves as an efficient and reliable solution for mass production lines. CRONOSSTECH C-Type Excentric Press 150 Ton is designed for stable operation in cold forming applications. Its rigid steel body, pneumatic clutch-brake system, and CE-compliant safety infrastructure offer reliable performance suitable for serial production. Key Advantages - Stable stroke performance and high repeatability in mass production - Operator safety-focused design (light curtain + safety systems) - Low maintenance needs with centralized automatic lubrication - Production-ready use with PLC control + dual-hand/foot pedal operation Applications - Cold cutting and punching operations - Cold shearing applications - Metal die forming - High-volume production lines ✅ STANDARD FEATURES • Steel construction body • Four-way guided slide • Nodular cast iron connecting rod and gear housings • Crankshaft and transmission shafts made of 4140 hardened steel • Centralized fully automatic grease lubrication • Pneumatic clutch and brake combination • CE safety directives compliant • Twin-coil safety valve • Manually adjustable stroke • Light curtain finger–hand protection system • PLC control system • Dual-hand/foot pedal control system • Mechanical safety system • Emergency reverse motor motion • Compliant with occupational safety regulations • In line with CE standards ✅ OPTIONAL FEATURES • Anti-vibration pads • Touchscreen LCD panel (standard for 150–300 tons) • Hydraulic safety system (standard for 200–300 tons) • Spare bolster plate • Decoiler, feeder and straightener • 1 custom-designed die set • 8-way slide guiding ✅ TECHNICAL SPECIFICATIONS (150 TON) Capacity: 150 Ton Throat depth: 320 mm Die–ram distance: 500 mm Slide–table distance: 540 mm Clearance between uprights: 500 mm Nsdpfx Asvtywdom Aowf Ram adjustment (stroke adjustment): 120 mm Approximate press width: 1600 mm Approximate press depth: 2280 mm Approximate press height: 2750 mm Front anchorage: 840 mm Side anchorage: 1300 mm Table hole diameter: Ø220 mm Table size: 660×920 mm Die mounting hole diameter: Ø55 mm Ram size: 600×290 mm Table height from floor: 805 mm Stroke adjustment: 10–125 mm Strokes per minute: 42 spm Motor power: 15 kW Motor speed: 1450 rpm Approximate weight: 7100 kg Note: Please inform us if you require modifications to technical specifications. ✅ PRODUCTION/SUPPLY NOTE This machine is manufactured in Turkey by CRONOSSTECH. All sales, commissioning, and after-sales processes are managed by CRONOSSTECH.

Kondisi: bekas, Tahun pembuatan: 2004,

Kondisi: bekas, Tahun pembuatan: 2019, Used machine Design equivalent to Weima C 150 Year of manufacture: 2019 1,845 operating hours Equipment and technical data: - Drive power: 5.5 kW - Briquette diameter: 50 mm - Hydraulic oil: 160 l - Throughput capacity: up to 50 kg/h (depending on material) - Connected load: 400 V +/- 5% / 50 Hz Included: - Press mechanism with filling cylinder, main cylinder, clamp cylinder - Connection piece for transport line - Chromed clamp - Hydraulic tank 160 l with pump motor + valve control - Safety switch for oil temperature - Control cabinet and electrical control system - Briquette length monitoring - Automatic end position for all cylinders - Manual control - Automatic "On/Off" with fill level end switch Njdpfow Rhk Dsx Am Aewf Material: planer shavings, sawdust from solid wood, loose, clean, and free of foreign materials* Max. dimensions: 10 mm Throughput capacity: approx. 50 m³/year *Specification of foreign materials: anything other than wood, wood pieces larger than 15 mm. Throughput capacity is highly dependent on material. The values given are averages. It depends on the mix, moisture, and material properties! Application is not or not fully known/specified. The machine is sold adequately and solution-oriented by a specialist dealer. With oil cooler or water cooling, sufficient ventilation and exhaust for the press/unit/oil cooler must be ensured. In case of excessive heat accumulation, the operating time can be drastically reduced due to overheating. Supplied with new pressing clamp Availability: by arrangement Location: Flörsheim

Tahun pembuatan: 1991, Kondisi: sangat baik (bekas), Fungsionalitas: berfungsi sepenuhnya, berat keseluruhan: 520 kg, The pump was operated on a test bench and has only very few operating hours. Flow rate: 400 m³/h (111 litres/second) Delivery head / Pressure: 19 m / 1.9 bar Pump speed: 1450 rpm Required NPSH: 3.83 m Efficiency: 85.7% Shaft power: 24.04 kW Impeller diameter: reduced to 264.5 mm (maximum Ø 269 mm) Shaft seal: single-acting mechanical seal Seal manufacturer: Burgmann Impeller type: closed radial impeller Bearing type: rolling bearing Lubrication: grease Materials Pump casing: 1.4408 (AISI 316) Wear plate: 1.4408 (AISI 316) Pressure cover: 1.4408 (AISI 316) Shaft: 1.4462 Impeller: 1.4408 (AISI 316) Bearing bracket: cast iron EN-GJL-250 Shaft sleeve: CrNiMo steel Suction nozzle nominal diameter: DN 200 Discharge nozzle nominal diameter: DN 150 Nominal suction pressure: PN 16 Nominal discharge pressure: PN 16 Coupling manufacturer: Flender Coupling type: Eupex NH with spacer sleeve Base plate: painted cast iron Motor manufacturer: VEM Type: KPER 200 L4 Efficiency class: IE 0 Motor speed: 1435 rpm Frequency: 50 Hz Rated voltage: 380 / 660 V Rated motor power: P2: 30 kW Thermal class: F Motor protection class: IP54 Power factor (cos phi): 0.82 Dimensions: Length: 1600 mm Width: 650 mm Nwsdpfx Asrfdttjm Ajf Height: 820 mm Weight: 520 kg

Kondisi: belum diuji (bekas), Tahun pembuatan: 2001, Fungsionalitas: berfungsi sepenuhnya, nomor mesin/kendaraan: UCP 1000, jarak pergerakan sumbu X: 1.000 mm, jarak lintasan sumbu Y: 800 mm, jarak gerak sumbu Z: 800 mm, produsen pengendali: Siemens 828D, de-01 Nwsdjyz Tnwspfx Am Ajf

Kondisi: siap digunakan (bekas), Tahun pembuatan: 1995, Fungsionalitas: berfungsi sepenuhnya, jarak pergerakan sumbu X: 750 mm, jarak lintasan sumbu Y: 400 mm, jarak gerak sumbu Z: 500 mm, produsen pengendali: Haas, model controller: Haas, lebar meja: 350 mm, panjang meja: 915 mm, berat keseluruhan: 3.500 kg, Dijual: 1 unit pusat pemesinan vertikal bekas Produsen: Haas / Mikron Nwodpsy Hta Rjfx Am Aof Tipe: VF2 / VCE750 Tahun pembuatan: 5/1995 Data teknis: Sistem kontrol: HAAS Panjang meja kerja: 914 mm Lebar meja kerja: 350 mm Kecepatan spindel vertikal maksimum: 7500 rpm Pergerakan sumbu X: 750 mm Pergerakan sumbu Y: 400 mm Pergerakan sumbu Z: 500 mm Taper: SK 40 Jumlah total alat: 20 unit Termasuk alat yang terlihat di gambar, dua komputer (salah satunya kemungkinan komputer CAM), manual pemrograman dan operasi. Mesin dapat dilihat di gudang kami di 09599 Freiberg.

Kondisi: baik (bekas), Tahun pembuatan: 2013, Fungsionalitas: berfungsi sepenuhnya, jarak pergerakan sumbu X: 860 mm, jarak lintasan sumbu Y: 560 mm, jarak gerak sumbu Z: 600 mm, cnc-heidenhain-itnc530-techdata Nwjdsy Hqmhspfx Am Aef

Kondisi: siap digunakan (bekas), Tahun pembuatan: 2001, jam operasional: 6.707 h, jarak pergerakan sumbu X: 762 mm, jarak lintasan sumbu Y: 406 mm, jarak gerak sumbu Z: 653 mm, produsen pengendali: SIEMENS, kecepatan spindel (maks.): 8.000 rpm, jumlah sumbu: 3, Mesin MIKRON VCE 750 3-sumbu ini diproduksi pada tahun 2001. Mesin ini memiliki ukuran meja 914 × 356 mm, pergerakan sumbu X 762 mm, pergerakan sumbu Y 406 mm, dan pergerakan sumbu Z 653 mm. Jika Anda mencari mesin frais berkualitas tinggi, pertimbangkanlah mesin MIKRON VCE 750 yang kami tawarkan untuk dijual. Silakan hubungi kami untuk informasi lebih lanjut mengenai mesin ini. Nwjdpfx Amsych Rnj Asf • Ukuran meja: 914 × 356 mm

Kondisi: siap digunakan (bekas), Tahun pembuatan: 1998, jam operasional: 11.320 h, kecepatan spindel (maks.): 6.000 rpm, jarak pergerakan sumbu X: 600 mm, jarak lintasan sumbu Y: 500 mm, jarak gerak sumbu Z: 450 mm, daya motor spindle: 15.000 W, berat alat: 13.000 g, jumlah sumbu: 3, This 3-axis MIKRON UM600 TNC 410/426 was manufactured in 1998. It offers a maximum X-axis travel of 600 mm, Y-axis travel of 500 mm, and Z-axis travel of 450 mm. The machine features a robust table measuring 520 x 900 mm with a maximum table load capacity of 400 kg. If you are looking for high-quality machining capabilities, we recommend considering the vertical machining center MIKRON UM600 TNC 410/426, which we have available for sale. Please contact us for further details. • Machining spindles (vertical and horizontal) • Drive power (44% duty cycle): 15 kW • Drive power (100% duty cycle): 6 kW • Motor torque: 50 Nm • Max. spindle torque (44% duty cycle): 800 Nm • Number of gear stages: 4 • Max. tool diameter: 130 mm • Included options: in-machine measurement and high-speed spindle • Feed drives (AC) • Programmable feed rate X/Y: 0 - 15,000 mm/min • Programmable feed rate Z: 0 - 12,000 mm/min • Rapid traverse X/Y: 15,000 mm/min • Rapid traverse Z: 12,000 mm/min • Coolant system • Tank capacity: 150 l • Flow rate: approx. 20 l/min • Clamping table • Table size: 520 × 900 mm • Number of T-slots: 4 • T-slot width: 14 H7 • Tool changer TCD 44 • Tool positions: 22 • Tool diameter: 80 / 130 mm • Max. tool length: 350 mm • Max. tool weight in TCD 44: 6 kg • Max. workpiece weight in drum magazine: 200 kg • Chip-to-chip time: 20-25 s • Tool change time: 12-16 s • Electrical connection • Total installed rated power: 15.8 kW Nwjdpsy D Thvjfx Am Ajf • Effective/connected load: 12.3 kW • Operating voltage/frequency: 3 × 400 V / 50 Hz Technical Specification Taper size SK 40

Kondisi: bekas, Tahun pembuatan: 2000, nomor mesin/kendaraan: 22910, lebar meja: 360 mm, panjang meja: 660 mm, Dimensi meja: 360 mm x 660 mm Nwedpfxoy Ak A Uj Am Ajf

Kondisi: baik (bekas), Tahun pembuatan: 2003, Semua bagian yang ditunjukkan dengan tangan tidak disertakan dengan mesin. Njdpfx Asy Ddb Tjm Aewf

Kondisi: baru, Tahun pembuatan: 2026, nomor mesin/kendaraan: EAN0729389556525, panjang total: 71.000 mm, tinggi total: 4.000 mm, jarak antara tiang: 2.700 mm, tinggi rak: 4.000 mm, jumlah baris rak: 7, kapasitas angkut: 6.000 kg, tinggi rangka: 4.000 mm, beban per pasangan rangka atap (maks.): 3.000 kg, Instalasi Rak Penyimpanan Palet Tinggi 4 m, per bidang 2 tingkat penyangga (lebar bersih 2700 mm) Lingkup: 32 rangka setinggi 4 m 128 anchor lantai 18 pelindung sudut benturan 100 balok penyangga panjang 2,7 m, tinggi 0,11 m 150 alas kawat 89/110, kapasitas angkat 1000 kg 7 papan kapasitas beban Pengiriman bebas lokasi proyek Rangka dibaut, tidak dirakit sebelumnya Pengiriman / Transportasi: Nodpfey E Nn Usx Am Aewf - maksimal 20 hari kerja setelah pembayaran diterima - bebas lokasi proyek / tempat pemasangan - Pembongkaran dari truk dilakukan oleh pembeli dengan peralatan angkat milik sendiri - Pengiriman ke seluruh wilayah Republik Federal Jerman (kecuali pulau)! Pengiriman ke negara-negara Uni Eropa berdasarkan kesepakatan individu.

Kondisi: baik (bekas), Tahun pembuatan: 1995, jarak pergerakan sumbu X: 1.000 mm, jarak lintasan sumbu Y: 600 mm, jarak gerak sumbu Z: 600 mm, x-travel 1000 mm y-travel 600 mm z-travel 600 mm Kontrol: Heidenhain TNC 426 Hidung spindle: 100–700 mm Meja kerja: 1.080 x 580 mm Berat benda kerja maks.: 550 kg T-slot: 7 buah Lebar T-slot: 14 mm Majalah alat dengan 36 posisi Berat alat maks.: 8 kg Panjang alat maks.: 340 mm Nwedey Eng Aspfx Am Ajf Berat mesin sekitar 6,2 ton Kebutuhan ruang sekitar 4.790 x 5.330 x 2.905 mm

Kondisi: bekas, mash-001 Nodeyzt A Uopfx Am Ajwf

Kondisi: bekas, Tahun pembuatan: 1999, nomor mesin/kendaraan: 71.28, jarak pergerakan sumbu X: 1.000 mm, jarak lintasan sumbu Y: 800 mm, jarak gerak sumbu Z: 1.000 mm, kecepatan rotasi (maks.): 15.000 rpm, kecepatan spindel (maks.): 15.000 rpm, jarak meja ke pusat spindel: 750 mm, Pusat permesinan CNC Nwedpfxsyxmiie Am Asf

Kondisi: bekas, Tahun pembuatan: 2000, Lot terdiri dari: (1) Pusat Pemesinan Vertikal CNC, crane penanganan tidak termasuk; paket alat disertakan. Nwjdpeyxmhxsfx Am Ajf