Beli Centauro Alfa Nc bekas (4.416)

Kondisi: baik (bekas), Tahun pembuatan: 2014, Rentang pemotongan 300 mm Rentang pemotongan pada 90 derajat: datar 330 x 260 mm Rentang pemotongan pada 90 derajat: persegi 260 x 260 mm Rentang pemotongan pada 45 derajat: bundar 260 mm Rentang pemotongan pada 45 derajat: datar 270 x 200 mm Rentang pemotongan pada 45 derajat: persegi 250 mm Rentang pemotongan pada 60 derajat: bundar 180 mm Rentang pemotongan pada 60 derajat: datar 170 x 170 mm Rentang pemotongan pada 60 derajat: persegi 180 mm Otomatis pengumpanan 9999,9 mm Pengumpanan minimum 2,0 mm Diameter potong minimum 5,0 mm Kecepatan pita 15 - 100 m/menit Rahang catok 340 mm bukaan Ukuran pita gergaji 3650 x 27 x 0,9 mm Kontrol MEP CNC Total kebutuhan daya 2,2 kW Berat 1240 kg Dimensi (P x L x T) 1800 x 1900 x 1750 mm Kondisi bagus (!!) Harga baru saat ini sekitar €23.000 Harga khusus berdasarkan permintaan Perlengkapan: - Mesin gergaji pita otomatis elektro-hidrolik yang kokoh (INDUSTRI) - Dengan fungsi semi-otomatis tambahan, untuk pemotongan dari 0° hingga 60° ke kiri - Kontrol MEP 50 berbasis WINDOWS “CE” dan layar sentuh 7” * Pengaturan semua parameter mesin secara cepat dan mudah * Dengan tombol sentuh tambahan + layar dengan lampu latar * 10 program masing-masing dengan jumlah maksimal 9999 unit dan panjang maksimal 9999,9 mm - Pengumpanan material dengan motor langkah melalui ball screw * Langkah tunggal 600 mm dapat diulangi untuk pemotongan panjang apa pun * Akurasi ± 0,1/600 mm - Pengumpan dengan pelindung dan sakelar pembatas keamanan - Pengaturan presisi kecepatan pemotongan dengan tampilan dalam mm/menit - Posisi kepala potong dan gerakan pengumpan dikendalikan dengan joystick - Deteksi otomatis awal pemotongan - Katrol besar dapat disetel, terbuat dari baja cor - Tegangan pita gergaji dengan kontrol tegangan dan tampilan di layar - Panduan pita karbida untuk presisi pemotongan tertinggi - Pemantauan beban pemotongan otomatis Lrsdpfx Aezc Rv Hopton - Catok dengan pengaturan cepat * Rahang penjepit dan penyangga dapat diganti - Wadah serbuk besar yang dapat ditarik ke samping dan tangki pendingin * Dilengkapi 2 pompa listrik untuk pelumasan dan pendinginan pita gergaji * Pistol pendingin untuk membersihkan mesin - Sikat pembersih serbuk untuk membersihkan pita gergaji - Manual pengoperasian dalam bahasa Jerman Informasi dari produsen: Jika mesin gergaji ini dipasang di jaringan listrik dengan pemutus arus bocor (RCCB), harus digunakan yang sensitif arus searah dan tidak kurang dari 300 mA.

Kondisi: bekas, Ragum mesin NC hidromekanik, VIS - HYDRAULIQUE Ragum mesin presisi, pengencang Tipe 20700 Tahun pembuatan sekitar 2000 Lebar rahang 150 mm Tinggi rahang 42 mm Rentang penjepitan 0 hingga 250 mm Maks. bukaan rahang 252 mm Lodszczvqjpfx Aptjrn Tekanan penjepit 6 ton Tinggi rel pemandu 51 mm Panjang rel pemandu 450 mm - Ragum mesin hidromekanik - Penyetelan cepat dengan penguncian bola di raster lubang 8 kali - Badan dasar yang stabil, digiling semua sisi - Dapat dipasang secara horizontal, vertikal, atau menyamping - Rel pemandu dengan alur panduan 19 mm - Tambahan 1 set rahang prisma Dimensi P x L x T: 480 x 150 x 107 mm Berat 32 kg Kondisi baik

Kondisi: baik (bekas), Tahun pembuatan: 2002, Manufacturer: PLEIGER Model: HF 75 / 115 S 30 Control: Siemens Simatic panel Year of manufacture: 2002 Stroke speed slide, step 1: 4 - 20 m/min Stroke speed slide, step 2: 0.3 - 3 m/min Chuck rotation, step 1: 300 rpm and 320 Nm Chuck rotation, step 2: 100 rpm and 1290 Nm Horizontal deep hole honing machine Horizontal tube honing machine Horizontal cylinder honing machine Horizontal pipe honing machine For fine finishing of cylindrical bores Specifications Metric US Standard Bore depth: 11,500 mm Spindle power: 55 kW Rotation speed: 300 rpm Dimensions (approx.): Lrodpfx Apskvnc Sotsn Length: 25,000 mm Width: 2,000 mm Height: 2,000 mm Weight: 30,000 kg Please note: The information on this page has been compiled by us to the best of our knowledge and, where possible, obtained from the manufacturer. The details are provided in good faith, but accuracy cannot be guaranteed. As such, this does not constitute representation or contractual terms. We recommend verifying all critical details independently.

Kondisi: sangat baik (bekas), Tahun pembuatan: 2001, Laser marking system Manufacturer: Baublys Model: BL 150 S/NC 500 Year: 2001 Technical Data Manufacturer: Baublys Model: BL 150 S/NC 500 Year of manufacture: 2001 Laser power: 150 Watt Laser type: Q-switched, pulsed solid-state laser Laser medium: Nd:YAG Wavelength: 1064 nm Beam diameter: approx. 1.2 – 1.3 mm after output coupling mirror (TEM00) Beam divergence: 5 mrad (TEM00) Pulse duration: CW / 90 ns Max. output power: 65 W multimode, 16 W single mode Pulse energy: 16 mJ at 3 kHz Beam deflection system: Galvanometer system Line width (mixed mode): approx. 0.12 mm Deflection speed: 3 m/s; corresponds to 200 characters/sec at 1.5 mm character height (single-line font) Dimensions: approx. [data missing] Weight: approx. [data missing] Power Supply Lredpfx Asq Abnnjpten Voltage: 400 V, three-phase, 50 Hz, three-phase, right-hand rotating field Connection: 5-pin CEE plug 16 A 6h Max. power consumption: 8.5 kW, max. 16 A per phase Protection: 3 x 16 A slow-blow Water connection Cooling water flow: 7.5 l/min at 20°C supply temperature Outlet connection: Thread G 3/4" male Thermal load: approx. 6.5 kW Max. cooling water inlet temperature: 20°C Water consumption: depends on inlet temperature Outlet temperature:

Tahun pembuatan: 2000, Kondisi: baik (bekas), Tangential grinding machine LIVNICA KIKINDA Complete with magnetic table Longitudinal travel: 1000 mm Cross travel: 400 mm Ledpfsq Aaw Hsx Aptern Motor power: 12 kW Weight: 3800 kg

Kondisi: belum diuji (bekas), Tahun pembuatan: 2004, Spindle slotter 2 pcs. Number of milling units: 7 pcs. Spindle diameter: 50 mm Control: Weinig PC-Nexus Weinig Uncontrol 12 with radial and axial NC spindles as well as VARIO table ..... Machine has already been professionally dismantled and stored at 73447 Oberkochen Technical Data Summary (additional included accessories on request) ..... Cross-cut saw Lsdpfjyrtzkex Aptsrn ..... > Cross-cut saw electronic, stepless horizontal adjustment > Number of tools: 1 pc. > Spindle speed: 3000-6000 rpm > Spindle diameter: 40 mm > Max. tool diameter: 400 mm > Motor power: 3.7 kW > Laser alignment light for detection of saw section > Axial travel 150 mm NC axis, stepless electronic > Radial travel pneumatic, 8 positions for e.g. edge rounding from above Rounding unit ..... > Position: horizontal bottom > Axial travel together with cross-cut saw. electronic length stop ..... > Length: 4500 mm 1st Tenoning and slotting spindle ..... > Number of tools: variable > Motor power: 15 kW > Spindle diameter: 50 mm > Tool clamping length: 640 mm, with counter bearing > Axial travel: 580 mm NC axis, stepless > Spindle speed: 2,800-4,000 rpm > Tool diameter: 380-400 mm > Rear counter bearing, the full clamping length is supported 2nd Tenoning and slotting spindle ..... > Number of tools: variable > Motor power: 15 kW > Spindle diameter: 50 mm > Tool clamping length: 640 mm, with counter bearing > Axial travel: 580 mm NC axis, stepless > Spindle speed: 2,800-4,000 rpm > Tool diameter: 380-400 mm > Rear counter bearing, the full clamping length is supported Transfer belt ..... For transfer of parts to longitudinal processing including double part separation upstream of the longitudinal processing infeed. 1st Profiling spindle (climb and conventional milling) ..... > Position: vertical right > Number of tools: variable > Motor power: 11 kW > Spindle diameter: 50 mm > Tool clamping length: 400 mm, with counter bearing > Axial travel 350 mm NC axis, stepless > Radial travel 80 mm NC axis, stepless > Spindle speed: 6000 rpm > Min. tool cutting circle: 140 mm > Max. tool cutting circle: 232 mm 2nd Profiling spindle ..... > Position: vertical right > Number of tools: variable > Motor power: 11 kW > Spindle diameter: 50 mm > Tool clamping length: 400 mm, with counter bearing > Axial travel 350 mm NC axis, stepless > Radial travel 80 mm NC axis, stepless > Spindle speed: 6000 rpm > Min. tool cutting circle: 140 mm > Max. tool cutting circle: 232 mm 3rd Profile milling unit (grooving unit from above) ..... > Position: horizontal top > Motor power: 3.0 kW > Spindle diameter: 40 mm > Tool clamping length: 40 mm > Axial travel 30 mm NC axis, stepless > Radial travel 125 mm NC axis, stepless > Spindle speed: 90...

Kondisi: belum diuji (bekas), Slot spindle 2 pcs. Number of milling units: 7 Spindle diameter: 50 mm Control: Weinig, PC-Nexus Weinig Unicontrol 12 with radial and axial NC spindles, as well as VARIO table and trimming carriage ..... Machine properly dismantled and stored at our warehouse in 73447 Oberkochen. Video and pictures were taken prior to disassembly. Technical Data Summary (Please inquire separately for any potentially included accessories) ..... Cross-cut saw ..... > Cross-cut saw, electronic, horizontally infinitely adjustable > Number of tools: 1 pc. > Spindle speed: 2,800 rpm > Spindle diameter: 40 mm > Max. tool diameter: 400 mm > Motor power: 3.7 kW > Laser guide light for identifying cutting section > Axial adjustment travel: 150 mm, NC axis, electronically infinitely adjustable > Radial adjustment: pneumatic, 8 positions, e.g. for top edge rounding Rounding unit ..... > Position: horizontally bottom > Motor power: 1.5 kW > Spindle diameter: 20 mm > Clamping length: 25 mm > Spindle speed: 9,000 rpm > Max. tool diameter: 130 mm > Axial adjustment: mechanically linked with cross-cut saw. > Radial adjustment: pneumatically controlled On/Off electronic length stop ..... > Length: 4,500 mm 1st tenoning and slotting spindle Lsdpsx H Al Nofx Aptern ..... > Number of tools: variable > Motor power: 15 kW > Spindle diameter: 50 mm > Clamping length: 640 mm, with counter bearing > Axial adjustment travel: 580 mm, NC axis, infinitely adjustable > Spindle speed: 2,800 rpm > Max. tool diameter: 400 mm > Counter hold, complete clamping length is counter-supported 2nd tenoning and slotting spindle ..... > Number of tools: variable > Motor power: 15 kW > Spindle diameter: 50 mm > Clamping length: 640 mm, with counter bearing > Axial adjustment travel: 580 mm, NC axis, infinitely adjustable > Spindle speed: 2,800 rpm > Max. tool diameter: 400 mm > Counter hold, complete clamping length is counter-supported Transfer belt ..... For transfer of parts to longitudinal processing, including double-part separation before infeed to longitudinal processing. 1st profiling spindle (climb and conventional milling) ..... > Position: vertical right > Number of tools: variable > Motor power: 11 kW > Spindle diameter: 50 mm > Clamping length: 400 mm, with counter bearing > Axial adjustment travel: 350 mm, NC axis, infinitely adjustable > Radial adjustment travel: 80 mm, NC axis, infinitely adjustable > Spindle speed: 6,000 rpm > Min. tool cutting circle: 140 mm > Max. tool cutting circle: 232 mm > 2 feed rollers opposite to spindle, axially pneumatically controlled, 8 positions > Table plate pneumatically adjusted to tool diameter 2nd profiling spindle ..... > Position: vertical right > Number of tools: variable > Motor power: 11 kW > Spindle diameter: 50 mm > Clamping length: 400 mm, with counter bearing > Axial adjustment travel: 350 mm, NC axis, infinitely adjustable > Radial adjustment travel: 80 mm, NC axis, infinitely adjustable > Spindle speed: 6,000 rpm ...

Kondisi: diremaj di bengkel (bekas), Slot spindle 1 pc Number of milling units: 4 pcs Spindle diameter: 50 mm Control: Weinig, PC-Nexus Weinig Unicontrol 10 CNC – spindles CNC-controlled, radial and axial ----- Machine was factory overhauled by Weinig in 2024. During the overhaul, the control system was also updated to Siemens S7 677 C with a new “Touch” membrane panel. Equipped with the following machining units: Cross-cut saw ----- with laser guide light, motor power 3 kW, spindle diameter 40 mm, spindle speed 3,000 rpm axial adjustment via NC axis radial adjustment pneumatically in 8 positions for edge rounding from above Bottom-mounted edge rounding unit ----- axial adjustment together with the cross-cut saw Tenoning and slotting spindle ----- motor power 15 kW spindle diameter 50 mm spindle speed 2,925 rpm tool swing diameter min. 380 mm, max. 400 mm tool clamping length 640 mm axial adjustment via CNC axis axial adjustment travel 580 mm axial adjustment speed 100 mm/sec 1st profile spindle (climb and conventional milling) ----- motor power 11 kW spindle diameter 50 mm spindle speed 6,000 rpm tool clamping length 400 mm with counter bearing axial and radial adjustment via CNC axis 2nd profile spindle ----- motor power 11 kW spindle diameter 50 mm spindle speed 6,000 rpm tool clamping length 400 mm with counter bearing axial and radial adjustment via CNC axis Horizontal profile milling unit (top) ----- motor power 3 kW spindle diameter 40 mm spindle speed 9,000 rpm pneumatic adjustment in 8 axial and radial positions Vertical profile milling unit (right side at machine outfeed) ----- motor power 3 kW spindle diameter 40 mm spindle speed 5,850 rpm pneumatic adjustment in 8 axial and radial positions Additional equipment: ----- CNC-controlled length stop, mounted on slotting table, for workpiece lengths up to 3500 mm, incl. cross-cut saw position integrated in control. Studio sash window device, swiveling ±60° Twin part package with automatic singulation and transfer Climb milling facility with window automation for window rebating Rebating cart for rebating of small sash widths Climate unit in control cabinet Lrodjxpi Duepfx Aptsn PC control NEXUS Automatic turning system Lamella conveyor, incl. return belt for transporting workpieces back to operator (Technical data according to manufacturer – no liability accepted).

Kondisi: diremaj di bengkel (bekas), Slot spindle 1 pc. Number of milling units: 4 pcs. Spindle diameter: 50 mm Control: Weinig, PC-Nexus # 2764 Weinig Unicontrol 6 with NC spindles ----- Machine will be cleaned and thoroughly checked prior to delivery Technical Data Summary (Please enquire regarding any additional included accessories) Pos. 1: Crosscut Saw ----- > Electronic, horizontally adjustable crosscut saw (stepless) > Number of tools: 1 pc. > Spindle speed: 2,800 rpm > Spindle diameter: 40 mm > Max. tool diameter: 400 mm > Motor power: 3.0 kW > Laser guide for saw cut identification > NC length stop, mounted on slot table included Positioning of the crosscut saw integrated into the control system. > Length: 3500 mm Pos. 2: Tenoning and Slotting Spindle ----- > Number of tools: variable, stepless adjustment via NC axis > Tool clamping length: 320 mm > Vertical spindle stroke: variable, stepless adjustment 254 mm via NC axis > Spindle speed: 3500 rpm > Spindle diameter: 50 mm > Max. tool diameter: 320 mm > Motor power: 11 kW Pos. 3: 1st Profiling Spindle (Climb and Conventional Milling) > Position: vertical right > Number of tools: 1 pc. > Tool clamping length: 120 mm > Spindle speed: 6,000 rpm > Spindle diameter: 50 mm > Max. tool cutting circle: 232 mm > Motor power: 7.5 kW Pos. 4: 2nd Profiling Spindle ----- > Position: vertical right > Number of tools: variable, stepless adjustment via NC axis > Tool clamping length: 320 mm > Vertical spindle stroke: variable, stepless adjustment 254 mm via NC axis > Spindle speed: 6,000 rpm > Spindle diameter: 50 mm > Max. tool cutting circle: 232 mm > Motor power: 11 kW 2 feed rollers opposite the spindle, axially controlled pneumatically, 2 positions Sash bar guide consisting of: Guide rail at the fence (climb-milling spindle area), Sash bar support from above in the area of the vertical right profile milling unit and profiling spindle. Pos. 5: Horizontal Top Profile Milling Unit ----- > Clamping length: 40 mm > Spindle diameter: 40 mm > Motor power: 3.0 kW Lrsdpfsvu Hfqjx Aptjn > Speed: 5,850 rpm > Max. tool cutting circle: 130 mm > Axial adjustment 30 mm, 8 positions via pneumatic turret > Radial adjustment 125 mm, 8 positions via pneumatic turret Pos. 6: 3rd Profiling Spindle (Fitting Spindle) ----- > Position: vertical right > Tool clamping length: 160 mm > Axial adjustment 115 mm, 8 positions via pneumatic turret > Radial adjustment 100 mm, 8 positions via pneumatic turret > Spindle speed: 5,850 rpm > Spindle diameter: 40 mm > Max. tool cutting circle: 210 mm > Motor power: 3.0 kW Additional Features ----- > Online capable > Rebating unit for tear-free rebating > Double part clamping kit > Return feed device for one-person operation: swivel belt > Screen control > Angled window device > Electronic angle display for angled windows > Industrial PC, PC control/NEXUS > Weinig type manufacturing program > Supplied without machining tools No original images yet available. Photos show a similar machine from our archive ----- Price for the above machine on request! ----- Option at extra charge: EUR 6,500.00 Note...

Kondisi: sangat baik (bekas), de26.368 Lsdpfoy S Tzrox Aptsrn

Kondisi: siap digunakan (bekas), Tahun pembuatan: 2007, Tekanan: 30,0 t Panjang tekuk: 800 mm Stop belakang – dapat disetel maks.: 420 mm Stroke balok atas: 100 mm Tinggi pemasangan: 310 mm Kecepatan kerja: 10,0 mm/detik Kecepatan balik: 12,0 mm/detik Kontrol: VISION 120 Kapasitas oli: sekitar 38,0 l Tegangan: 380 V Kebutuhan daya total: 4,5 kW Berat mesin: sekitar 890 kg Kebutuhan ruang: sekitar 1250 x 950 x 1900 mm Harga baru saat ini: sekitar 24.000 euro Harga khusus atas permintaan - Dalam kondisi telah diverifikasi - Video mesin - ?v=SChO00VQgIY Lodpfxsyuzche Aptern Perlengkapan: - NC press brake elektro-hidrolik – mudah dioperasikan - Kontrol NC UNITRONICS "VISION 120" * untuk kedalaman tekan + stop belakang (sumbu Y + X) - Stop belakang NC bermotor listrik (sumbu X) * Input nilai setpoint/aktual dimungkinkan * 2x jari stop yang dapat diatur secara manual - Pengoperasian di depan kanan - Berbagai macam alat/alat tekuk * Rumah alat atas: AMADA/PROMECAM - 1x pedal kaki yang dapat diposisikan bebas - Tombol darurat di depan - Perangkat keselamatan di belakang - Manual pengoperasian

Kondisi: baik (bekas), Tahun pembuatan: 2008, Sawing capacity round: 115 mm Max. saw blade diameter: 350 mm Ljdpfxorz Rw Re Aptsrn Sawing capacity rectangular: 200 x 70 mm Sawing capacity square: 105 x 105 mm Sawing unit power: 6.5/8 kW Speed on sawing shaft: 1700/3400 rpm Maximum feed length: 9999 mm Shortest feed length: 10 mm Weight: 2300 kg Equipment: BEHRINGER SPS control Micro lubrication system Controlled zero point Cutting gap extension Machine light Vertical main clamping Non-return device Extraction system prepared (Keller extraction unit not included) Roller conveyor infeed approx. 5000 mm, self-made

Kondisi: sangat baik (bekas), Tahun pembuatan: 2013, Data teknis: Lebar pemotongan maksimum: 3100 mm Kapasitas potong maksimum baja: 10,0 mm Pengaturan celah potong Lrsdozfx Nfopfx Apten Pengaturan sudut potong Pembatas paralel yang dapat disesuaikan Kontrol NC: Maper by BAYKAL Potongan per menit: 12 Perangkat penahan pelat Pelindung samping Daya motor: 22 kW Dimensi (Panjang x Lebar x Tinggi): sekitar 4000 x 3000 (1800) x 2000 mm Berat: sekitar 9,7 ton Penjual tidak bertanggung jawab atas kesalahan pengetikan atau transmisi data. Mesin ini, baik dari segi tampilan, teknis maupun tingkat keausan, sesuai dengan usianya; mesin bekas dijual tanpa jaminan apa pun.

Kondisi: siap digunakan (bekas), Philips NC 9418 830 rack, E stand and serial number as shown in the photo, used, normal signs of wear, 100% functional, scope of delivery as per photos. Ljdpfsi Eckusx Aptsrn

Kondisi: siap digunakan (bekas), Bosch PS200 CNC power supply Philips PE 2189/01 NC 9415 DC 20–40V 235W, used, normal signs of wear, fully functional, scope of delivery as per photos Ljdoulqg Njpfx Aptjrn

Kondisi: siap digunakan (bekas), Siemens 6FC5110-0BA01-1AA0 NC CPU card, used, in original packaging, normal signs of wear, 100% functional Ljdoi Edx Iepfx Aptern

Kondisi: siap digunakan (bekas), Philips fan assembly for Philips 4022 226 4230 NC 9418 830 01701 rack, serial number as per photo, used, normal signs of wear, 100% functional, scope of delivery as shown in photos. Lrjdei Eckmepfx Apton

Kondisi: siap digunakan (bekas), Siemens 6FX1147-4BB00 NC/COM CPU E, Version E, used, normal signs of wear, 100% functional, scope of delivery as per photos Lrodpexagq Tefx Aptjn

Kondisi: siap digunakan (bekas), Bosch NC-SPS CNC module, used, 100% functional Lodpoi D Uaksfx Aptsrn

Kondisi: siap digunakan (bekas), Philips fan assembly for Philips 4022 226 4230 NC 9418 830 01201 rack, serial number as shown in the photo, used, normal signs of wear, fully functional, scope of delivery as per photos. Lsdei Eckijpfx Aptern

Kondisi: siap digunakan (bekas), Unipo Electronic 7LPIP9220211A UFP modul input B2T-NC FIMI, bekas, tanda pemakaian ringan, 100% berfungsi, isi pengiriman sesuai foto. Lodpoxaidpjfx Aptorn

Kondisi: siap digunakan (bekas), Siemens 6FC5110-0BA01-1AA0 Sinumerik NC CPU card 580 231 9101.01 E Version D / 570 521 9101.00 E Version A, used, 100% functional Lredpfx Aoi Edx Soptjn

Kondisi: siap digunakan (bekas), Lehmann NC indexing device with PL gearbox 420-112 rotary table, serial number: A4199. New material number: 829070AR1 / Old material number: WM780647B. Used, normal signs of wear, 100% functional, delivery scope as per photos. ATTENTION: Please enquire separately for packing and shipping costs! Lodpfjt Sn Udox Aptern

Kondisi: siap digunakan (bekas), Supfina 811-507.4 unit penyesuaian NC terdiri dari: bantalan rol jarum-silinder aksial ZARN 2052 TN, pelat bantalan 811-507:03-2, bush pemandu 811-507.2:01-2, spindle ulir rol 811-507.2:02-2, bekas pakai, dengan bekas penggunaan normal, 100% berfungsi, ruang lingkup pengiriman sesuai foto. Lrsdpfx Asxah Sfspten

Kondisi: siap digunakan (bekas), coax 5-PCD-2 15 NC cartridge valve, used, normal signs of wear, 100% functional, scope of delivery as per photos Lodpji D Umaefx Aptorn