Used Trumpf Cn 901 for sale (395)

Condition: excellent (used), Large flanging device Make Trumpf Type CS 20 CN 20 Lredpfx Afsu Nuycsnsn (28202) suitable for Trumpf CS 20 and CN20 very good condition, very little used

Year of construction: 2003, operating hours: 69,600 h, condition: used, functionality: fully functional, Used TRUMPF-PULZER CNC35L tube bending machine We are offering a used TRUMPF-PULZER CNC35L tube bending machine for sale. Technical data: Manufacturer: TRUMPF-PULZER Type: CNC35L Machine No.: 837 Year of manufacture: 2003 Electrical connection values: Voltage: 400 V / 3~ Frequency: 50 Hz Current consumption: 21 A Connected power: 14 kVA Bending capacity: Bending direction: Left-hand Lodpfx Afezaqm Tjnorn Suitable for tubes made of steel, stainless steel and non-ferrous metals Maximum tube dimensions: Ø 35 x 2 mm with a bending radius of R = 2 x D Tube feed length: approx. 3,000 mm Equipment: Mandrel bending device Dimensions and weight Installation dimensions (L x W x H): approx. 5,550 x 2,520 x 1,560 mm Machine weight: approx. 2,500 kg Description: The TRUMPF-PULZER CNC35L is a robust and proven CNC tube bending machine for the precise processing of steel, stainless steel and non-ferrous metal tubes. Thanks to the integrated mandrel bending device, the machine is particularly suitable for demanding bending tasks with high quality requirements. The machine dates from 2003 and is offered in used condition. If you are interested or would like further information, please do not hesitate to contact us. Inspections are possible by arrangement.

Condition: ready for operation (used), Year of construction: 2007, functionality: fully functional, operating hours: 42,200 h, pressing force: 130 t, table length: 3,230 mm, clearance between the columns: 2,650 mm, total length: 3,980 mm, total width: 1,900 mm, total height: 2,840 mm, overall weight: 10,200 kg, control type: CNC control, Hello, We are selling Trumpf TruBend 5130 CNC press brake, tooling included.. 130t/3meter CNC bending machine, 4-axis back gauge, CNC crowning, TASC 6000, Willa hydraulic clamping, Tooling included, priced aprox. 10000€ Lower die 16mm - 3m - sectionized for 30° 50mm - 3m - sectionized 80mm - 515mm Upper Tool finer height 200mm, radius of 1mm, for 30° - 3m - sectionized, for thicker plates height 20mm, radius 3mm - 600mm - sectionized Lsdey Nd I Rspfx Afnorn Feel free to contact.

Condition: ready for operation (used), functionality: fully functional, Year of construction: 2010, operating hours: 18,948 h, machine/vehicle number: A0215A0087, laser power: 2,000 W, sheet thickness steel (max.): 12 mm, travel distance X-axis: 3,000 mm, travel distance Y-axis: 1,500 mm, travel distance Z-axis: 75 mm, No minimum price – guaranteed sale to the highest bidder! A maintenance checklist from December 2025 is attached! The defects listed there have been completely rectified (see attached activity report from Trumpf)! TECHNICAL DETAILS Working area X-axis: max. 3,000 mm Working area Y-axis: max. 1,500 mm Working area Z-axis: max. 75 mm Speed X: max. 60 m/min Speed Y: max. 60 m/min Speed Z: max. 60 m/min Simultaneous speed X/Y: max. 85 m/min Sheet metal thickness, steel: max. 12 mm Sheet metal thickness, stainless steel: max. 6 mm Sheet metal thickness, aluminum: max. 5 mm Workpiece weight: max. 575 kg MACHINE DETAILS Control system: B&R Arnco Lsdjzdp Ntopfx Afnsrn Laser type: TruCoax 2000 Laser power: 2,000 W Dimensions and weight Footprint (L x W x H): 7,400 x 3,300 x 2,300 mm Transport width: 2,464 mm Weight: 9,000 kg Electrical connection: 65 kVA Operating hours (as of December 17, 2025) Operating hours, laser: 18,948 h Laser beam on-time: 3,635 h EQUIPMENT Closed machine frame with integrated laser head Motion unit for high-precision machining Drives with maintenance-free three-phase servo motors Sheet metal support accessible from both sides Enclosed beam guidance Fully integrated cooling unit Traveling extraction system Collection container for falling parts under the working area Positioning laser diode FocusLine

Condition: ready for operation (used), functionality: fully functional, Year of construction: 2012, controller model: SIEMENS SINUMERIK 840D SL, laser power: 4,000 W, sheet thickness steel (max.): 20 mm, sheet thickness stainless steel (max.): 15 mm, sheet thickness aluminum (max.): 10 mm, travel distance X-axis: 3,000 mm, travel distance Y-axis: 1,500 mm, No minimum price – guaranteed sale to the highest bidder! TECHNICAL DETAILS Working area: 3,000 x 1,500 mm Laser power: 4,000 W Sheet thickness, mild steel max.: 20 mm Sheet thickness, stainless steel max.: 15 mm Sheet thickness, aluminum max.: 10 mm Lens cutting head diameter: 250 mm MACHINE DETAILS Control system Control model: SINUMERIK 840D SL Screen: 17" touch color screen Voltage: 400 V Frequency: 50 Hz Electrical standard: IEC EQUIPMENT Closed machine frame with integrated laser unit Torque drive in combination with linear direct drives CO₂ laser TruFlow 3200 with optimized standby mode High-frequency excitation Installation plans and installation conditions, 2 copies Motion unit for highly precise machining Closed beam guidance Single cutting head strategy Cooling unit Automatic pallet changer in the longitudinal direction Wide longitudinal conveyor belt Ergonomic control panel with touch color screen Work area lighting Position laser diode Spray device PierceLine FocusLine NitroLine PlasmaLine Transport and assembly device Maintenance-free turbo radial blower Gas mixer integrated Laser control TASC Laser power control Laser logbook function Lens cutting head with 250 mm lens Universal cutting device with bus connection LensLine with condition monitoring ControlLine: Height control and sheet edge detection Easy operation Simple workshop programming Advanced workshop programming Fast re-production Lredpfx Aezd Afzefnjn Automatic shut-off ContourLine FastLine FlyLine Microweld Production plan AdjustLine Teleservice via internet USB interface RJ-45 network connection CE marking Light barriers Multi-chamber extraction system Compact filter unit Machine enclosure with Makrolon panels TruTops Laser initial license TruTops Laser secondary license TruTops Tube follow-up license Documentation TruLaser 3030 Documentation, 2 copies, 1 x paper / 1 x CD Note: The operating hours can be found in the last image.

Condition: used, functionality: fully functional, Year of construction: 2013, operating hours: 69,301 h, control type: CNC control, degree of automation: automatic, laser type: CO₂ laser, laser source manufacturer: Trumpf, laser source model: Truflow3200, laser hours: 41,349 h, laser power: 3,200 W, sheet thickness (max.): 20 mm, sheet thickness steel (max.): 20 mm, sheet thickness stainless steel (max.): 12 mm, sheet thickness aluminum (max.): 8 mm, travel distance X-axis: 3,000 mm, travel distance Y-axis: 1,500 mm, travel distance Z-axis: 115 mm, feed rate X-axis: 140 m/min, feed rate Y-axis: 140 m/min, repeat accuracy: 0.01 mm, input voltage: 400 V, input frequency: 50 Hz, type of input current: three-phase, Equipment: nozzle changer, Trumpf TruLaser 3030 (L20) Laser Cutting Machine Year of manufacture: 2013 Working area: 3000 × 1500 × 115 mm Rated laser power: 3,200 W Control system: Siemens Sinumerik 840 D SL Maximum sheet thickness: Steel (St): up to 20 mm Stainless steel (VA): up to 12 mm Aluminum (Al): up to 8 mm Maximum traverse speed: 140 m/min Positioning accuracy: 0.01 mm Dimensions: Length: 9,300 mm Width: 4,600 mm Height: 2,200 mm Weight: 12,000 kg Equipment: Automatic nozzle changer, voltage stabilizers included Ledpfx Afoxmpn Usnjrn

Condition: excellent (used), For sale: professional TRUMPF TruTool TKA 500 (1A1) plate edge beveller / chamfering machine. This machine is designed for making weld preparations and machining edges on steel plates. Condition: used, fully operational, normal signs of use visible in the photos. Industrial-grade equipment – made in Switzerland / Germany. Technical data: Power: 1400 W Supply voltage: 230 V / 50–60 Hz Current: 6.5 A Model: TruTool TKA 500 (1A1) Year of manufacture: 2009 Manufacturer: TRUMPF Applications: Lredpjyhnukofx Afnjn Bevelling plate edges before welding Chamfering for V and X weld joints Processing of structural and machine steel Workshops, fabrication, steel construction Scope of delivery: TRUMPF TruTool TKA 500 beveller Original TRUMPF transport case Manufacturer’s manual / documentation Accessories as shown in the photos The equipment is ready for operation. On-site inspection possible. Shipping or personal collection – to be arranged.

Condition: used, Year of construction: 2006, Fully functional Lrsdpfxjzd Tm Ne Afnsn

Condition: used, functionality: fully functional, Year of construction: 2003, Fully functional Lrsdpfxozd Tmis Afnsn

Condition: used, Year of construction: 2011, Fully functional Lrjdozd Tlrspfx Afnsn

Condition: ready for operation (used), functionality: fully functional, Year of construction: 2010, laser power: 3,000 W, sheet thickness steel (max.): 20 mm, sheet thickness stainless steel (max.): 15 mm, table length: 3,000 mm, table width: 1,500 mm, TRUMPF TruLaser 5030 3kW Fiber with LiftMaster! Laser head replaced in 2024 TECHNICAL DETAILS Table length: 3,000 mm Ljdpfozg Er Nsx Afnsrn Table width: 1,500 mm Cutting heads: 1 Sheet thickness mild steel: 20 mm Sheet thickness stainless steel: 15 mm Sheet thickness aluminium: 15 mm Sheet thickness copper: 4 mm Sheet thickness brass: 3 mm Laser power: 3,000 W Laser model: TruDisk3001 (4C) MACHINE DETAILS Control type: CNC Last documented maintenance: 10-12 Sept 2025 Operating hours (as of 09/2025): 53,082 h (currently approx. 54,000 h) Dimensions & Weight Space requirement: 9,300 x 4,700 x 2,200 mm Machine weight: 12,700 kg Electrical connection: 40 kVA / 80 A Electrical power consumption: 23 - 33 kW EQUIPMENT CE documentation and manuals LiftMaster Automatic nozzle changer Extraction system Operating manual Chiller + extraction system Compressor not included Note: Transporting the machine requires 1 standard truck and 1 truck with a width of 3m.

Condition: excellent (used), Year of construction: 2012, Trumpf Trushear 5063 (2012) Guillotine Shear 3050x6mm Manufacturer: Trumpf Lrsdpfxszgu Nqs Afnjn Model: TruShear 5063 Year of manufacture: 2012 Condition: used, very good Control: ELGO P50 Cutting length: 3050 mm Sheet thickness: 6 mm / 4 mm for stainless steel Cutting angle: 0.5 – 2.8° Blade gap adjustment: 0.05 – 0.72 mm Automatic cutting angle adjustment Automatic blade gap adjustment Automatic blade gap compensation Hold-down devices: 20 pieces Strokes per minute: 18 – 38 Backgauge: 10-1000 mm, adjustable Total power requirement: 11 kW Oil capacity: 140 L Dimensions (approx.): L 4.00 x W 1.67 x H 1.90 m Total weight: approx. 7.2 t Customs tariff number: 84615090 Sheet support device Sheet return device Small parts chute 3x support arms Light barrier Foot pedal Documentation

Condition: used, Year of construction: 1996, pressure 0050 t chamfer lenght 1270 mm distance between columns 1040 mm stroke 215 mm throat 410 mm dayligth 385 mm back stop - adjustable 860 mm working feed 1 - 10 mm/sec return speed 135 mm/sec total power requirement 8,6 kVA weight of the machine ca. 4750 kg dimensions of the machine ca. 2000 x 2100 x 2400 mm - controlled axes: Y1, Y2, X, R - Pneumatic die shift - hydraulic WILA/TRUMPF upper tool clamp - hydraulic WILA/TRUMPF lower tool clamp - LAN network connection - 4 stop fingers manually adjustable, foldable to the rear, pneumatic clampable - CNC control, operation on the front left - 2-hand operation / foot switch Lrjdpfsy Hxmiex Afnjn - rear + side protection

Condition: used, Year of construction: 2022, operating hours: 2,919 h, pressing force: 660 t, Equipment: CE marking, Standard equipment Machine - Closed machine frame - Press beam - Spherical bearing for the press beam with press beam inclination - Electro-hydraulic upper drive - Block hydraulics - Length measuring system (Y-axis) - Hydraulic oil filling (lifetime filling) - Oil cooler Crowning - Self-regulating crowning Back gauge - Back gauge finger (2 pieces) Control - Machine control T3500T Multi-Touch - Integrated TRUMPF technology data Data transfer - USB interface - RJ-45 network interface - Network capability - Remote support interface Operation - Control unit with foot switch Lredpfxezfy Aye Afnjn Safety - CE marking and EC Machinery Directive - Standard safety device _____ Extended machine equipment Back gauge - 5-axis back gauge (X, Delta X, R, Z1 and Z2 axes) Tool clamping - Hydraulic TRUMPF upper and lower tool clamping Control - DXF import - 3D visualization for T3500T control Angle assistants - ACB Laser (Automatically Controlled Bending), manually adjustable Operation - Work area lighting, front and rear Material handling - 2 support consoles Safety - BendGuard

Condition: reconditioned (used), Year of construction: 2017, functionality: fully functional, Specifications: X/Y axis working area: 3000 x 1500 mm Z axis working area: 115 mm Lredjzgf Tgopfx Afnen Control system: SINUMERIK 840D sl USB port: yes Dimensions: Length: 11400 mm Width: 7000 mm Height: 3200 mm Control, hardware, electrical equipment Control system: Siemens 840D SL User interface: Windows 10 IoT Screen: Multi-touch monitor Screen size: 19" Interface: USB Axis data - Max. speed Speed: 235 m/min Working area X-axis: 3000 mm Y-axis: 1500 mm Z-axis: 116 mm Max. workpiece weight, pallet changer: 1100 kg Max. workpiece weight, both pallets: 2200 kg Laser-specific data - TruDisk 8001 Max. laser power: 8000 W Max. sheet thickness, structural steel: 25 mm Max. sheet thickness, stainless steel: 40 mm Max. sheet thickness, aluminum: 25 mm Max. sheet thickness, copper: 16 mm Max. sheet thickness, brass: 10 mm Configuration: ⦁ Working area: 3000 x 1500 mm ⦁ Enclosed machine frame ⦁ Machine cooling unit (water-air) ⦁ Automatic pallet changer in longitudinal direction ⦁ High-speed cutting package ⦁ Water-air cooling unit ⦁ Laser extraction ⦁ Smart Beam Control (intelligent beam monitoring) ⦁ Performance package for fusion cutting ⦁ Installation: Left-hand side ⦁ Cleaning brush ⦁ Integrated camera ⦁ Smart Collision Prevention ⦁ Automatic nozzle cleaning ⦁ Electric roll-up cover ⦁ Nozzle changer ⦁ Wireless operation point ⦁ Copper cutting package ⦁ Brass cutting package ⦁ Performance package for fusion cutting ⦁ Coolline ⦁ Brightline ⦁ Teleservice Automation: ⦁ Loadmaster (Liftmaster also available as an option)

Condition: excellent (used), functionality: fully functional, Year of construction: 2008, Trumpf Quicksharp, year of manufacture 2008. Lrjdpfszgfuqjx Afnen Immediately available.

Condition: used, functionality: fully functional, Year of construction: 2018, operating hours: 12,100 h, Manufacturer TRUMPF Type TruMatic 1000 - 1600 Fiber (K07) Year 2018 X-axis travel Lrodpfozgfnqsx Afnon 3000 mm Laser nominal power 3000 Watts Control system Bosch CML 45 Punching force 16.5 to Max. sheet thickness 6.4 mm Max. material weight 150 kg Standard configuration Machine ⦁ Box frame ⦁ Hybrid axis system ⦁ Linear magazine with 20 stations for clamps and tools ⦁ Hydraulic clamps (3x) ⦁ Drives with maintenance-free AC motors ⦁ Follow-up device with programmable pressure foot ⦁ Foot switch for closing the clamps ⦁ Part separator chute, right ⦁ Part removal flap, left ⦁ Sensor for part removal flap ⦁ Work area lighting ⦁ FocusLine ⦁ SortMaster Compact (retrofit option) TRUMPF Laser ⦁ LLK according to standard layout (10m) ⦁ Laser power control ⦁ Laser log function ⦁ Enclosed beam guidance via laser light cable (LLK) ⦁ Separate power supply for the TruDisk Compact cutting unit ⦁ Solid-state laser compact cutting system ⦁ Protective glass ⦁ Collision protection ⦁ ControlLine Punching head ⦁ Delta drive ⦁ Rotatable single-station tool adapter ⦁ Programmable pressure foot position ⦁ Tool length compensation ⦁ Punch spray lubrication ⦁ Punch slug vacuum ⦁ Forming function ⦁ Punching stroke counter Control system ⦁ TRUMPF control system based on Rexroth IndraMotion MTX ⦁ Touch panel with TFT 19" color screen ⦁ Integrated technology data ⦁ Programmable cutting gas pressure ⦁ Interface for remote maintenance ⦁ Automatic shutdown with wake-up function ⦁ Program manager ⦁ Production plan Options: Copper cutting package Brass cutting package Compressed air cutting Outfeed of small parts Brush tables Multitool Sensor for part separator chute Sign function, quick beading Multibend Thread forming Deburring roll technology Sorting function for part separator chute Height-adjustable clamps

Condition: ready for operation (used), Year of construction: 1998, pressing force: 133 t, total width: 3,640 mm, total height: 2,690 mm, overall weight: 10,650 kg, travel distance X-axis: 600 mm, travel distance Z-axis: 2,310 mm, number of axes: 4, This 4-axis TRUMPF Trumatic Trumabend V130 was manufactured in 1998. It features a press force of 1300 kN and a bending length of 3060 mm. The machine has a weight of 10,650 kg and a throat depth of 410 mm. If you are looking to get high-quality bending capabilities, consider the TRUMPF Trumatic Trumabend V130 press brake we have for sale. Contact us for further details. • Distance between columns: 2,690 mm • Throat: 410 mm • Table width: 120 mm • Mounting height: 385 mm (standard) / 535 mm (extended height) • Working height: 1,050 mm • Y-axis: • Rapid speed: 200 mm/s • Working speed: 1–10 mm/s • Return speed: 135 mm/s • Stroke: 215 mm (standard) / 365 mm (extended height) • Positioning accuracy: 0.01 mm • X-axis: • Max gauge range: 860 mm • Travel: 600 mm • Positioning accuracy: 0.04 mm • Feed rate: 500 mm/s • R-axis: • Travel: 250 mm • Positioning accuracy: 0.08 mm • Feed rate: 300 mm/s Lrsdpfx Aezf If Aofnsn • Z-axis: • Travel: 2,310 mm • Positioning accuracy: 0.06 mm • Feed rate: 1,000 mm/s • Electrical system power: 18.7 kW • Pneumatic system pressure: 6 ± 1 bar • Hydraulic oil capacity: not specified Technical Specification Bending Length 3060 mm

Condition: ready for operation (used), Year of construction: 2006, laser power: 4,000 W, travel distance X-axis: 3,000 mm, travel distance Y-axis: 1,500 mm, travel distance Z-axis: 115 mm, overall weight: 11,500 kg, total width: 5,300 mm, total height: 2,000 mm, product length (max.): 9,800 mm, number of axes: 3, This 3-axis TRUMPF TRUMATIC L 3030 was manufactured in 2006. It features a working range of 3000 mm in the X direction and 1500 mm in the Y direction, with a maximum positioning speed of 60 m/min. The machine is equipped with a TRUMPF CNC path control based on Siemens SINUMERIK 840D. If you are looking to get high-quality laser cutting capabilities, consider the TRUMPF TRUMATIC L 3030 CO2 laser cutting machine we have for sale. Contact us for further details. • Max. positioning speed: 60 m/min (parallel to axes); 85 m/min (simultaneous) • Drive type: Maintenance-free three-phase AC servomotors on X, Y, Z • CNC control: TRUMPF CNC path control based on Siemens SINUMERIK 840D • Minimum programmable travel step: 0.01 mm • Positioning accuracy: ±0.1 mm • Average position dispersion: ±0.03 mm • Compressed air consumption: • With TLF 2000–3200: 31 m³/h (516 l/min) • With TLF 4000: 42 m³/h (700 l/min) • Laser power options (cw) and max. structural steel thickness: • TLF 2000: 2000 W / 12 mm • TLF 2700: 2700 W / 15 mm • TLF 3200: 3200 W / 20 mm • TLF 4000: 4000 W / 20 mm • Electrical connection and fuses (50 Hz / 400 V): • TLF 2000: 63 kVA / 100 A • TLF 2700: 71 kVA / 125 A • TLF 3200: 73 kVA / 125 A • TLF 4000: 88 kVA / 160 A Additional equipment • Dust extractor • Control cabinet • HF generator • Cooling unit Ljdpjzf H Aaofx Afnorn

Condition: good (used), Year of construction: 2001, functionality: fully functional, Press force: 230 t Bending length: 3060 mm Frame width: 2690 mm Stroke: 365 mm Control system: DELEM DA 65 Overhang: 410 mm Installation height: 535 mm Dimensions: 3660 x 2310 x 3100 mm Ljdpozd Tkbefx Afnsrn Machine weight (approx.): 17,700 kg Equipment: - CNC control system Delem - Crowning - Wila tool holder - 1 bending aid - 2 support arms - Side protection doors - 2-hand foot control - Die shifting - 2 manually adjustable stop fingers - Controlled axes: y1, y2, x, r - Operating hours: 13,993 h

Condition: good (used), Year of construction: 2005, functionality: fully functional, Press force: 130 t Lrjdpfx Afezd Snxonjn Bending length: 3100 mm Frame width: mm Control system: DELEM DA-69TW Stroke: 365 mm Machine weight (approx.): 12,950 kg Accessories: - 2 support arms in front of the machine - CNC control system Delem - Crowning - Die shifting - Wila tool holder - Side protective doors - Light curtain - Controlled axes: y1, y2, x, r - 2 adjustable support fingers

Condition: excellent (used), functionality: fully functional, Year of construction: 2007, machine/vehicle number: 108461, EHT Trumpf hydraulic sheet metal shear, type TrumaCut 460 working width 6050 mm max. sheet thickness 4 mm steel Cybelec CNC control, type DNC 60-GS Ledpezf Ifijfx Afnjrn pneumatic sheet support device motorized back gauge automatic shear gap adjustment automatic angle adjustment side gauge 6000 mm

Condition: ready for operation (used), Year of construction: 2010, pressing force: 400 t, stroke length: 400 mm, throat depth: 405 mm, clearance between the columns: 4,050 mm, total length: 6,100 mm, overall weight: 34,000 kg, Equipment: CE marking, documentation/manual, Hydraulic press brake Manufacturer: EHT - Trumpf, Type: TruBend 8400-50S Year of manufacture: 2010 Technical data Manufacturer: EHT / Trumpf Type: TruBend 8400-50S Year of manufacture: 2010 Capacity: 400 t Bending length: 5050 mm Distance between uprights: 4050 mm Throat depth: 405 mm Stroke of Y-axis: 400 mm Installation height: 720 mm Table width: 140 mm Motor power: 37 kW Oil capacity: 600 L Pneumatic connection: 6 +/- 1 bar Dimensions: approx. L 6.1 x W 2.8 x H 3.67 m Weight: approx. 34 t Equipment • Controlled axes: X, R, Y1, Y2, Z1, Z2 • Control system: Cybelec ModEva 10S, 2D – graphic control • Upper tool clamping system Trumpf/Wila, hydraulic • Lower tool clamping system Trumpf, hydraulic • CNC-controlled crowning • Safety light curtain Lazersafe • 2 pcs. CNC bending aids incl. parking position • Pneumatic die shifting • Foot switch • Very large tool package, as shown in the photos • LCB angle measuring system (2 x front, 2 x rear) Lodpfx Aozd Tf Sofnjrn All information without guarantee.

Condition: excellent (used), functionality: fully functional, Year of construction: 2016, Table 3050 x 1550 mm Pressing force 220 kN Max. workpiece weight 280 kg Lredpfjzcd Hrex Afnjn Sinumerik 840 D Machine weight 17 t Axes: X ... 6500 mm Y ... 310 mm Z ... 170 mm A1 ... n x 360 A2 ... n x 360

Condition: excellent (used), functionality: fully functional, Year of construction: 2009, Options: ACB, BendGuard for manual bending, HQ version, interface to 2nd machine Ledjwykccjpfx Afnern