Used Alzmetall Ax 2-T/S for sale (1,18,154)

Condition: good (used), DRILLING CAPACITY STEEL E335 (ST 60) [MM]: 14 TAPPING PERFORMANCE STEEL E335 (ST 60) [MM]: M 14 SPINDLE, SHORT: MT 2 DISTANCE SPINDLE TO COLUMN [MM]: 250 TABLE CLAMPING AREA [MM]: 370 x 300 DISTANCE SPINDLE - TABLE MIN./MAX. [MM]: 125 / 455 COLUMN DIAMETER [MM]: 90 Z-TRAVEL OF SPINDLE [MM]: 100 FEED: manual POWER [KW]: 0.6 / 0.95 Kjdpjy D Ebnefx Afujdn POWER 2 [RPM]: 0.6 / 0.95 MOTOR 1 [RPM]: 750 / 1500 MOTOR 2 [RPM]: 750 / 1500 SPINDLE RPM RANGE | OPTION 1 [RPM]: 125 – 2,400 SPINDLE RPM RANGE | OPTION 2 [RPM]: 225 – 4,300

Condition: used, functionality: fully functional, The ALZMETALL AX 2/S is the more compact sister machine to the ALZSTAR series. It is a professional, extremely precise bench or pillar drill (depending on the base), primarily used in precision engineering, training workshops, laboratories, and demanding workshops. While the ALZSTAR 30/S is designed for "rough" work with a drilling diameter of up to 30 mm, the AX 2/S focuses on compactness and maneuverability for smaller drilling diameters, without compromising the typical Alzmetall stability. Technical data at a glance Feature | Value / Specification Kdjdjzdy Rzjpfx Afusn ----- | ----- Drilling capacity (in steel St 60) | 23 mm Thread cutting (optional) | max. M 14 (steel) / M 16 (cast iron) Spindle mount | MK 2 (short spindle) Spindle stroke (Z-axis) | 100 mm Overhang | 250 mm Column diameter | 90 mm Machine table (support) | 370 x 300 mm Feed | Manual Motor power | 0.6 / 0.95 kW Spindle speed (stepless) | Variant 1: 125 – 2,400 rpm | Variant 2: 225 – 4,300 rpm Machine weight | approx. 180 kg (net machine weight) Key features & equipment details Mechanically stepless drive: As with the larger sister model, the speed is adjusted steplessly and conveniently during operation via a mechanical control wheel (variator). Digital display: The spindle speed is displayed digitally on a clearly visible display on the head of the machine as standard. Compact size: With a net weight of approximately 180 kg, it is significantly lighter than the ALZSTAR 30/S (approx. 260 kg) and can still be transported or moved relatively easily if required. Safety features: A lockable main switch with motor protection, a locking emergency stop button, and the electrically protected spindle guard are also standard features. Note: Sold without warranty or guarantee. We assume no liability for the operational functionality of the machine. The sale is made excluding any liability for material defects, to the extent permitted by law.

Condition: excellent (used), Year of construction: 1999, Drilling capacity (steel): 18mm Drilling capacity (cast): 23mm Thread cutting (steel): M14mm Spindle holder: MK 2 Spindle stroke: 100mm Extension: 250mm Column diameter: 90mm Power: 0.55 kW Kedpskytxzsfx Afujdn Spindle speed: 125 – 2400 RPM / 225 – 4300 RPM

Condition: new, Müller co-ax 5-PCS-2 15 NC valve with external drive 24V DC ,unused, 100% functional, scope of delivery according to photos Kdedoi Eb Tdspfx Afuen

Condition: new, müller co-ax 5-PCS-2 10 NC valve with external actuator 24V DC ,unused, 100% functional, scope of delivery according to photos Kdjdpfx Aji Eb Tasfuen

Condition: new, ALZMETALL column drilling machine Alzstar 23 S Manufacturer: Alzmetall Type: Alzstar 23 S Condition: NEW Drilling capacity steel E335 (St 60) 23 mm Thread cutting Steel E335 (St 60) M 14 Cast EN-GJL-200 (GG20) M 16 Short spindle MK 2 Spindle stroke 100 mm Thrust 250 mm Column diameter 90 mm Machine table, usable support 370 x 300 mm T-slots, number x width x distance 2 x 14 x 160 mm Distance spindle-table min./max. 140/670 mm Hand feed Machine height without options approx. 1770 mm Net weight approx. 175 kg Drive stepless Motor 750 / 1500 rpm Power 0.6 / 0.95 kW Spindle speed rpm 225-4300 Standard equipment: Mushroom push button (latching) for EMERGENCY STOP Reversing switch for clockwise and counterclockwise rotation Motor protection switch Stepless speed adjustment Digital speed display Protection class IP 54 Kedoy S Avlspfx Afuedn Connection plug (fully assembled, cable length 2m) Spindle protection with electrical fuse Paint: DD structural paint light gray RAL 7035, anthracite RAL 7016

Condition: as good as new (ex-display), Column drilling machine Make: ALZMETALL Model: AX 3s iTRONIC Condition: New machine Speed 100 - 1.800 rpm. equipped as standard with: - 7" TFT - LCD display with touch function: Manual input spindle speed setpoint, Speed display actual value, Integrated drilling depth display with Touch zero point transfer, Virtual drilling depth scale in the display, Machine status displays and warnings in display, service information, Selectable operator language: DE/EN/FR/ES/IT/NL/RU. Kdsdpfx Afsiypz Esusn - Thread cutting device - Speed adjustment, stepless, by means of lever - Speed display, digital - Three separate buttons for clockwise rotation - counterclockwise rotation - stop - Clockwise and counterclockwise rotation via contactor control - spindle protection - Operating instructions other important technical data: - 30 mm drilling capacity in ST 60 - 140 mm quill stroke - spindle cone MK 3 - 115 mm column diameter - 1,0 / 1,6 kW motor power - 515 x 360 mm Table dimension with the following options: - LED machine light - automatic spindle stop - technology calculator in display - workpiece counter

Condition: new, bore capacity in steel St 60 25 mm Drilling capacity in St 60 30 mm threading in St 60 M 16 M 20 Short spindle MK 3 spindle stroke 140 mm throat 293 mm column diameter 115 mm Machine table - usable table surface 514x360 mm T-Slots Amount - Width - Distance 2x14x224 mm distance spindle - column min./max. 132/724 mm feed von Hand 0 stufenlos Spindle Speed 225-4300 U/min. engine 1,0/1,6 kW voltage 400 V Standard equipment: - 7" TFT LCD display with touch function: * Manual input of spindle speed set value * Actual speed display * Integrated drilling depth display with touch zero point transfer * Virtual drilling depth scale in the display * Machine status indicators and warnings on the display * Service information * Selectable operating language: DE/EN/FR/ES/IT/NL/RU - Thread cutting device, for thread cutting with stop, max. 6 threads/min (thread cutting capacity depending on spindle speed), thread depth adjustable via depth stop and on the TFT LCD display (4 tools) - Infinitely variable speed adjustment via adjustment lever - Spindle protection with electrical fuse - Three separate buttons for clockwise rotation - anticlockwise rotation - stop - Mushroom pushbutton (latching) for EMERGENCY STOP - Main switch, lockable - Clockwise and counter-clockwise rotation via contactor control - Control voltage 24 V, protection class IP 54 Kdjdjyvvpgjpfx Afuen - Paint finish: DD textured paint signal white RAL 9003, PANTONE 4545c, black Item 20.5 Foot switch in addition to the thread cutting device, for switching the direction of spindle rotation in the process. direction of rotation during the process Item 25. Coolant unit B, consisting of: separate container (33 l), pump with motor protection switch, complete armature motor protection switch, complete fitting Item 37.5 Technology calculator in the display The technology calculator guides you through the cutting task Determination of the cutting data using the following parameters: - Manufacturing process - Tool diameter - Cutting speed - Material table - Transfer function of the spindle speed as set value

Condition: good (used), Year of construction: 1992, Drilling machine, bench drill, pillar drill, column drill -Manufacturer: Alzmetall, Pillar drilling machine type AX2 S -Spindle mount: MK2 -Motor: 0.37 / 0.55 kW -Speed adjustment: stepless -Speeds: 450 - 4300 rpm -Table size: 250 x 250 mm -Travel distance: 560 mm -Spindle stroke: 90 mm -Protrusion: 250 mm -Column Ø: 90 mm -Dimensions: 720/540/H1650 mm -Weight: 145 kg Kdjdpfx Afsyv Ahvsuon

Condition: new, bore capacity in steel (diameter) 23.0 mm throat 250 mm Ksdpfsxabwzex Afuodn bore stroke 100 mm morse taper 2 MK table: 370 x 300 mm turning speeds 225 - 4300 U/min column diameter 90.0 mm distance spindle /table 140 / 670 mm engine output 0.6 / 0.95 kW weight 175 kg Machine height 1770 mm Furnishing : - Mushroom pushbutton (latching) for EMERGENCY STOP - Reversing switch for clockwise and counterclockwise rotation - Motor protection switch - Infinitely variable speed adjustment - Digital speed display - Protection class IP 54 - Connection plug (fully assembled, cable length 2m) - Spindle protection with electrical fuse - Painting: DD textured paint, light gray RAL 7035, anthracite RAL 7016

Condition: new, 18 mm M 12 M 14 MK 2 225-4.300 U/min. spindle stroke 80 mm throat 190 mm column diameter 65 mm 300x240 mm 2 x 12 x 80 mm 75/357 mm 300x240 mm 2 x 12 x 80 mm 437/437 mm feed von Hand Handkurbel total power requirement 0,37/0,55 kW Machine height 840 mm weight 120 kg Kdsdpoyv Nddofx Afusn Standard equipment: - Main switch with motor protection switch lockable - Reversing switch for clockwise and anti-clockwise rotation - Speed adjustment stepless - Protection IP 54 - Mushroom pushbutton (latching) for EMERGENCY STOP - Spindle protection with electrical protection Option 12 - LED machine light, with radially adjustable light beam, power rating 230 V, protection class IP 65

Condition: used, Year of construction: 1986, Technical details: bore capacity in steel (diameter): 18 mm throat: 250 mm bore stroke: 100 mm drill capacity in cast iron: Ø 23 mm spindle taper MT: MK 2 spindle speed:: 400 - 630 - 1000 - 1600 - 2500 U/min feed: manuell mm/U Distance spindle/table max.: 75 / 605 mm table clamping surface:: 250 x 250 mm column diameter: Ø 90 mm total power requirement: 0,55 kW weight of the machine ca.: ca. 170 kg Kdodpswiwwfjfx Afujn dimension machine xH: 0,4 x 0,8 x 1,8 m

Condition: new, ALZMETALL Alzstar 18-T/S, Manufacturer. Alzmetall Type: Alzstar 18-T/S Condition: New Drilling capacity in St 60: 18 mm, Thread cutting in St 60: M 12, Thread cutting in GG 20: M 14, Short spindle: MK 2, Spindle speed: 225-4,300 rpm, Spindle stroke: 80 mm, Throw: 190 mm, Column diameter: 65 mm, Machine table - usable support: 300x240 mm, T-slots number - width - distance: 2 x 12 x 80 mm, Distance spindle-machine table min./max.: 75/357 mm, Machine base plate usable support: 300x240 mm, T-slots number - width - distance: 2 x 12 x 80 mm, Distance Spindle base plate min./max.: 437/437 mm, Feed by hand, Machine table height adjustment: hand crank, Total power requirement: 0.37/0.55 kW, Machine height: 840 mm, Weight: 110 kg Standard equipment: Main switch with motor protection switch, lockable Reversing switch for clockwise and counterclockwise rotation Infinitely variable speed adjustment Protection class IP 54 Mushroom push button (latching) for EMERGENCY STOP Spindle protection with electrical protection Kjdpoy S Au Usfx Afuodn Optional: - LED machine light - Under table - Drill chuck 1-13 or 3-16 Available now. For self-collection. Forklift available. Shipping also possible Subject to errors, changes and prior sale. Other Alzmetall table drilling machines and pillar drilling machines always in stock!

Condition: new, bore capacity in steel St 60 32 mm bore capacity in cast iron GG 20 38 mm Drilling capacity in St 60 40 mm threading in St 60 M 24 threading in GG 20 M 30 Short spindle MK 3 spindle stroke 120 mm throat 293 mm column diameter 115 mm Machine table - usable table surface 515 x 360 mm T-Slots Amount - Width - Distance 2 x 14 x 224 mm Kdedpfx Aoyvvptefujn Distance spindle-table min. 117 / 701 mm feed von Hand spindle turning speed - stepless 160 - 2250 U/min total power requirement 1,45/1,9 kW weight of the machine ca. 260 kg

Year of construction: 1984, condition: ready for operation (used), drilling capacity steel/GG: 18/23 mm spindle taper: 2 MK arm length: 250 mm table size: 250 x 370 mm spindle turning speed range: 400 - 5000 rpm engine: 0,48/0,6 kW space needed: 750 x 500 x 1670 mm weight: 130 kg Kjdpfx Afek Tzu Rousdn

Condition: new, bore capacity in steel (diameter) 18.0 mm throat 190 mm bore stroke 80 mm morse taper 2 Kurzspindel MK turning speeds 225 - 4.300 U/min voltage 400 / 50 Hz Volt Kdodoxaay Uopfx Afuon table: 300 x 240 mm column diameter 65 mm engine output 0.37 / 0.55 kW weight 110 kg Furnishing: - Large spindle speed range - stepless speed adjustment - machined base plate - Electrically secured spindle protection - Main switch lockable with motor protection switch - Reversing switch for clockwise and counterclockwise rotation - Operating instructions in German

Condition: used, Year of construction: 2001, Technical details: Ksdpsxxl Sgsfx Afusdn max. wheel diameter: 50 mm gear width: 20 mm max. module: 4 mm min. module: 0,1 mm total power requirement: 12,5 kW weight of the machine ca.: 4000 kg dimensions of the machine ca.: 2,2 x 2,5 x 2,3 m workpiece length - max.: 300 mm

Condition: used, We are offering this used GESIPA FireFox 2 F axial pneumatic-hydraulic riveting tool, year of manufacture unknown, for sale. Manufacturer: Gesipa Blindniettechnik GmbH & Co. KG Type: FireFox 2 F axial Maximum operating pressure: 6.0 bar Ksdpfxezfg Sus Afusdn Serial number: If you have any questions or require further information, please do not hesitate to contact us.

Condition: new, As a machine dealer in Offenburg, we have new and used ALZMETALL table drilling machines and column drilling machines in our range. You can find an overview of the drilling machines on our homepage. If you have any questions, just call us. Here we offer the new series of ALZMETALL pillar drilling machines with TOUCH display: ALZMETALL AX3 iTRONIC-V pillar drilling machine Condition: NEW Standard equipment 7“ TFT - LCD display with touch function: - Manual input of spindle speed setpoint - Speed display actual value - Integrated drilling depth display with touch zero point transfer - Virtual drilling depth scale in the display Kdodpfx Asy S Auujfuon - Machine status displays and warnings in the display - Service information - Selectable operating language: DE/EN/FR/ES/IT/NL/RU - Continuous speed setting using adjustment lever - Spindle protection with electrical protection - Three separate buttons for clockwise rotation - anti-clockwise rotation - stop - Mushroom push button (latching) for EMERGENCY STOP - Lockable main switch - Clockwise and anti-clockwise rotation via contactor control - Control voltage 24 volts - Protection class IP 54 - Paint finish: DD structural paint signal white RAL 9003, PANTONE 7545c, black Technical data: Manufacturer: ALZMETALL Type: AX 3 iTronic-V Drilling capacity steel E 335 (St 60) (mm): 40 Thread cutting steel E 335 (St 60): M 24 Thread cutting cast iron EN-GJL-200 (GG 20): M 30 Short spindle: MK 3 Spindle stroke (mm): 120 Usable projection (mm): 293 Column diameter (mm): 115 Machine table (mm): 515 x 360 T-slots (mm): 2 x 14 x 224 Distance spindle-table (mm): 117 / 701 Feed: 0.1 + 0.2 mm/rev Machine height (mm): approx. 1840 Drive: stepless Speed range (r/min): 160 - 2250 Motor (kW): 1.45 / 1.9 Weight (kg): approx. 270 Special equipment included: - Foot switch in addition to the thread cutting device Other options can be retrofitted: - LED machine light - Coolant system B - Technology calculator in the display - Maximum drilling depth display Optional accessories: - Machine vice size 3/125mm BB type BON3 - Machine vice size 4/160mm BB type BON4 - Keyless drill chuck Supra 1-13mm or 3-16mm MK3 Available at short notice. For self-collection. Forklift available. Shipping also possible Subject to errors, changes and prior sale. Not the right machine? Then please contact us.

Condition: excellent (used), Year of construction: 2014, functionality: fully functional, type of input current: three-phase, input voltage: 400 V, measuring range X-axis: 254 mm, measuring range Y-axis: 152 mm, measuring range Z-axis: 100 mm, workpiece weight (max.): 45 kg, feed length X-axis: 254 mm, feed length Y-axis: 152 mm, feed length Z-axis: 100 mm, travel distance X-axis: 254 mm, travel distance Y-axis: 152 mm, travel distance Z-axis: 100 mm, input frequency: 50 Hz, S-T Industries Profile Projector 22-2600 – 30" Screen, 5X Magnification | Precision Optical Comparator Now available at Used Machine Tools Ireland Ltd – a high-precision S-T Industries Profile Projector, Model 22-2600, with a large 30" (760mm) viewing screen, Heidenhain Quadra-chek 100 Control and 5X magnification lens, ideal for dimensional inspection in precision manufacturing. Previously used in a medical device company, this optical comparator is in very good condition and has been maintained to the highest standards. S-T Industries Profile Projector 22-2600 | 30" Screen | 5X Magnification | Very Good Condition 🔧 Manufacturer: S-T Industries 📍 Location: Ireland 📅 Model: 22-2600 🧰 Condition: Very good – ex-medical device company 📦 Available: Immediately 🛠️ Technical Specifications: Brand: S-T Industries Model Number: 22-2600 Control: Heidenhain Quadra-Chek 100 Screen Size: 30" (760mm) diameter Magnification Lens: 5X Worktable Travel (X-Y): 10" x 6" (254mm x 152mm) Kedpfxow Nyfws Afuedn Glass Stage Plate: 12" x 8" (305mm x 203mm) Load Capacity: Approx. 45 kg (100 lbs) Screen Rotation: 360° with digital readout Illumination: Surface (Oblique) Illumination – Halogen Profile Illumination – Collimated light with adjustable brightness Focus Travel (Z-Axis): 4" (100mm) Power Supply: 230V / 50Hz Condition: Very good – ex-medical device company Country of Origin: USA Location: Ireland 🧭 Ideal For: Medical device manufacturing Aerospace & precision engineering Tool & die inspection Quality control and dimensional inspection labs S-T Industries Profile Projector for sale Used optical comparator Ireland 30" screen profile projector Precision measuring equipment Dimensional inspection projector 22-2600 comparator S-T Industries 5X magnification projector Used metrology equipment Notes: *Specifications are given in good faith but not guaranteed*

Condition: excellent (used), Year of construction: 2010, functionality: fully functional, type of input current: three-phase, input voltage: 400 V, measuring range X-axis: 254 mm, measuring range Y-axis: 152 mm, measuring range Z-axis: 100 mm, workpiece weight (max.): 45 kg, feed length X-axis: 254 mm, feed length Y-axis: 152 mm, feed length Z-axis: 100 mm, travel distance X-axis: 254 mm, travel distance Y-axis: 152 mm, travel distance Z-axis: 100 mm, input frequency: 50 Hz, For Sale: S-T Industries Profile Projector 22-2600 – 30" Screen, 5X Magnification | Precision Optical Comparator Now available at Used Machine Tools Ireland Ltd – a high-precision S-T Industries Profile Projector, Model 22-2600, with a large 30" (760mm) viewing screen, Heidenhain Quadra-chek 100 Control and 5X magnification lens, ideal for dimensional inspection in precision manufacturing. Previously used in a medical device company, this optical comparator is in very good condition and has been maintained to the highest standards. S-T Industries Profile Projector 22-2600 | 30" Screen | 5X Magnification | Very Good Condition 🔧 Manufacturer: S-T Industries 📍 Location: Ireland 📅 Model: 22-2600 🧰 Condition: Very good – ex-medical device company 📦 Available: Immediately 🛠️ Technical Specifications: Brand: S-T Industries Model Number: 22-2600 Control: Heidenhain Quadra-Chek 100 Screen Size: 30" (760mm) diameter Magnification Lens: 5X Worktable Travel (X-Y): 10" x 6" (254mm x 152mm) Glass Stage Plate: 12" x 8" (305mm x 203mm) Load Capacity: Approx. 45 kg (100 lbs) Screen Rotation: 360° with digital readout Illumination: Surface (Oblique) Illumination – Halogen Profile Illumination – Collimated light with adjustable brightness Focus Travel (Z-Axis): 4" (100mm) Power Supply: 230V / 50Hz Condition: Very good – ex-medical device company Country of Origin: USA Location: Ireland Kdjdpfsw Nygnex Afuen 🧭 Ideal For: Medical device manufacturing Aerospace & precision engineering Tool & die inspection Quality control and dimensional inspection labs S-T Industries Profile Projector for sale Used optical comparator Ireland 30" screen profile projector Precision measuring equipment Dimensional inspection projector 22-2600 comparator S-T Industries 5X magnification projector Used metrology equipment Notes: *Specifications are given in good faith but not guaranteed*

Year of construction: 2011, condition: ready for operation (used), Various metalworking machines, including a larger Wagner radial drilling machine, are available. 1) Column radial drilling machine Wagner PRC 50, year of manufacture: 2011, drilling capacity (steel): 50mm, spindle stroke: 315mm, outreach range: 350mm-1600mm, spindle-base plate distance: 370mm-1270mm, speed: 2000rpm, machine dimensions X/Y/Z: approx. 2500mm/1100mm/2900mm, weight: approx. 3500kg. The machine has an unknown defect. 2) Column drilling machine Alzmetall AX3/SV, year of manufacture: 2000, drilling capacity (steel): 32mm, spindle stroke: 120mm, outreach: 293mm, column diameter: 115mm, table dimensions X/Y: 515mm/360mm, speed: 2250rpm, weight: approx. 300kg. 3) 2x metal circular saw Macc NTM 350, year of manufacture: 1998/2010, saw blade diameter: 350mm, cutting capacity: 120mm, weight: approx. 450kg. 4) Belt grinding machine Grit A/S GIS 150, year of manufacture: 2014, belt dimensions X/Y: 150mm/2000mm, motor power: 4kW, weight: approx. 100kg. An on-site inspection is possible. A package sale is preferred. Ksdpfxjy Eqtio Afuodn

Condition: ready for operation (used), Year of construction: 2002, machine/vehicle number: 30282, functionality: fully functional, Alzmetall AB 32/SV-RFT20 drilling machine with fixed table in very neat condition. Specifications: Drilling capacity in steel ST60: 32/40mm Kjdpfx Afjyanmqsusdn Spindle travel: 160mm Tapping capacity: M24/M30 Spindle taper: MK4 Automatic feed in 3 steps: 0.1/0.2/0.3mm Minimum distance spindle-table: 300mm Maximum distance spindle-table: 950mm Distance spindle-column: 300mm Speed: 62-2000rpm variable in 4 steps Table clamping area: 760x770mm Weight: 760kg

Condition: used, Technical specifications: Spindle diameter: 30 mm Spindle height: 130 mm Rotations: 3000/6000/8000/10000 rpm Manual spindle height adjustment Spindle lock Work table dimensions: 1800x650 mm Adjustable cullet arms Motor power: 4 kW Power supply: 400 V Overall dimensions: Length: 650 mm Width: 1080 mm Height: 1300 mm Kdjdpfx Afozd Eufouon

Condition: used, overall weight: 18,000 kg, axle configuration: 2 axles, first registration: 02/2023, loading space length: 9,395 mm, total width: 2,480 mm, Year of construction: 2023, Equipment: ABS, KRONE 2-axle swap chassis, Type: MAXI AZW 18 eL3B7, year of manufacture 02 / 2023 > Offer non-binding and subject to prior sale > Gross weight 18,000 kg > Technically ready for operation with normal signs of use, as shown in the pictures > Body / chassis: Color RAL: 9005 / black > Suitable for BDF superstructures - 7.45 with a support height from 1,020 to 1,320 mm > Unladen ride height: 1,080 mm > Tyres: 4 pcs, 445/45 R19.5, in good condition > Axles: Brand BPW > Brake system: EBS 4S/3M > Drawbar: length adjustable (12 x 50 mm) from 1,800 to 2,400 mm with towing eye / 40 mm > MOT & safety inspection current / new > Air connections: red / yellow > Electrical connections: ABS and 1 x 15-pin > Additional galvanized rear underrun protection > Immediately available and available in multiple units > Price ex location D-59269 Beckum Ksdpey N N Dwsfx Afuodn