Used Stanko Vertical Turret Lathe for sale (12,454)

Condition: used, faceplate diameter 2500 mm swing diameter 3200 mm turning height 3100 mm Control R&D type MTC 2x-2 workpiece weight 20000 kg slide adjustment 1600 mm side head - cross travel 1000 mm Refurbished 1996 Many accessories Tool holders Jaws Jaw extensions Guodpjyq Swzsfx Albsc The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1995, faceplate diameter 4000 mm swing diameter 4300 mm turning height 1750 mm slide adjustment 1000 mm table load 18 t turning speeds 43,7 U/min Control Siemens type 840 D mm Rest 2 ram head dimension 250x250 mm live tooling 36 kw total power requirement 85 KVA weight of the machine ca. 64 t dimensions of the machine ca. 8x5,8x8 m The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Guodpfsyqvu Rox Albsc Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1994, faceplate diameter 1250 mm swing diameter 1400 mm turning height 1500 mm Control Siemens type 880T Table load 6000 kg cross rail - adjustment 700 mm Max ram stroke 1000 mm turning speeds 400 U/min transmission ratio 2 Feed 3-8000 mm/min total power requirement 69 kW The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. Gujdpoyqvu Defx Albec We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1963, faceplate diameter 1200 mm swing diameter 1500 mm turning height 1300 mm slide adjustment 800 mm side head - cross travel 550 mm Gusdpfjyqvuwex Albjc digital readout Heidenhain Overhauled in 1996 Machine is cycle-controlled with Heidenhain Positip New control panel The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1970, faceplate diameter 1400 mm Godpfxjyqvuqe Albouc swing diameter 1600 mm turning height 1500 mm Control Siemens type 840 D workpiece weight 6500 kg Slide movement vertical 1000 mm turning speeds 10-315 U/min Feed 3600 mm/min The machine was overhauled in 2009. Control: Siemens 840 D The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1965, faceplate diameter 1250 mm Gjdeyqvrijpfx Albeuc swing diameter 1450 mm turning height 1200 mm slide adjustment 800 mm side head - cross travel 600 mm Overhauled in 1996 Machine is cycle-controlled with Heidenhain Positip New control panel The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1972, faceplate diameter 3500 mm swing diameter 4100 mm turning height 1400 mm Gujdpfx Alsyqvpzoboc Control Siemens Slide movement horizontal longitudinal 2100 slide adjustment 1300 mm cross rail adjustment 1300 mm The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1986, faceplate diameter 2500 mm swing diameter 2800 mm turning height 2200 mm table load 15 t Rest 2 total power requirement 55 kW weight of the machine ca. 56 t The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. Gedjyqvkxopfx Albsuc We look forward to your visit. Your Markus Hirsch Team

Condition: used, faceplate diameter 1000 mm swing diameter 1400 mm turning height 1100 mm Control Siemens Gedpsyqtnujfx Albouc type 840 D Shop Turn Tool changer 12 Pos. x-travel 2000 mm z-travel 700 mm slide adjustment 1000 mm Rapid movement 6000 mm/min turning speeds 500 U/min total power requirement 62 kW K 234/50822 Machine was overhauled in 2010 by Hering with Siemens 840 DSL Shop Turn The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 2015, faceplate diameter 1250 mm swing diameter 1500 mm turning height 1250 mm Control Siemens type 840 Dsl tool taper 4 Pos. The machine was overhauled in 2015 by Matuschek. Siemens 840 DSL Shop Turn The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. Gedpfeyqr S Ejx Albjuc About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1981, faceplate diameter 1600 mm swing diameter 2100 mm turning height 1700 mm Control R & D type MTC 4 turning speeds 280 U/min workpiece weight 20000 kg Tool changer 14 Pos. Gedpfx Aljyqr Srsbjuc weight of the machine ca. 2800 t dimensions of the machine ca. 3,7x3,75x5,1 m Machine is modernized The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1983, faceplate diameter 2500 mm swing diameter 2865 mm turning height 3000 mm Control R & D type MTC 4 Rest 2 slide adjustment 1500 mm turning speeds 140 U/min tool change unit 12 Pos. Machine is modernized The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop Gedpeyqr Sfofx Albouc If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: new, Year of construction: 2026, Machine NEW! Geometry acceptance according to DIN8609 Warranty 12 months for all damages Control:conventional/SPS Siemens faceplate control Gjdpfxjcht Tne Albeuc 4-axis digital display Fa.Fagor/ACU-RITE or Heidenhain complete electrical equipment 230/400V,50Hz,german make,CE-Norm Technical data: Max. Workpiece dimensions: - Diameter mm 3200 - Height mm 1600(up to 2600 possible*) Max. Workpiece weight kg 16000 Face plate diameter mm 2800 Max. stroke length - horizontal mm 1720 - vertical mm 1200 Number of stages of faceplate rotation 18 Face plate speeds PLC Siemens or stepless(2 steps) Lenze control rpm 1,6-63/0-80 Support working feed number of steps 18 Speed of cross beam adjustment mm/min. 360 Max. Support line adjustment speed mm/min. 2000 Max. Faceplate torque kN/m 67 Main drive power kW 55/75 Dimensions (LxWxH) mm 5490x7075x5100 Weight kg 43.000

Condition: good (used), Year of construction: 2012, functionality: fully functional, Schiess CNC vertical lathe with C axis, year 1992, retrofitted in 2012 CNC: NUM 1060 FLEXIUM 2 tables, table diameter 2000mm – max turning diameter 2500mm – max table speed 201 rpm – table power 56 KW Load capacity (table included): 16,000kg Movable crossrail with 12 positions, 50mm pitch Available space under spindle nose: min. 795mm, max. 1345mm RAM Z stroke: 1000mm C axis with 360,000 positions – milling spindle max speed 1600 rpm – milling spindle power 22KW – 2 gear ranges Guodpfxjxpqm Ro Albjc Tool magazine: 20 turning tool positions, 35 milling tool positions 1 milling head WIDAFLEX UTS80 1 milling head ISO 50 Renishaw MP60 touch probe (for parts) Tool presetter – Transmit function: G20 / G21 – No rigid tapping Chip conveyor Front door: partial opening M0 / full opening

Condition: ready for operation (used), Year of construction: 2001, operating hours: 42,400 h, functionality: fully functional, travel distance X-axis: 800 mm, spindle speed (max.): 5,000 rpm, turning length: 300 mm, spindle bore: 79 mm, controller model: Siemens 840D, TECHNICAL DETAILS Turning length: 300 mm Travel range X-axis: 800 mm Travel range Z-axis: 300 mm Speed range main drive: 20 - 5,000 rpm Guedpfxezb Efge Albsc Speed range C-axis: 0 - 100 rpm Spindle bore: 79 mm Torque main drive: 200 Nm Torque at the spindle: 240 Nm Torque clamping device: 28 Nm Rapid traverse X-direction: 100 m/min Rapid traverse Z-axis: 45 m/min Tools and tool magazine Number of positions in the tool magazine: 12 Speed of powered tool max.: 6,000 rpm Tool holder: VDI 40 Clamping area in the work area (W x H): 340 x 430 mm Number of T-slots according to DIN 650: 7 MACHINE DETAILS Control model: Siemens 840D Power main spindle: 27 / 20 kW Total power consumption: 50 kVA Electrical version - voltage/frequency: 3~ / 400 V / 50 Hz Interface: yes Spindle operating hours: 42,400 h Power-on hours: 93,728 h Dimensions & Weight Machine dimensions (L x W x H): 3,200 x 3,950 x 2,800 mm Chip conveyor dimensions (L x W x H): 3,400 x 1,150 x 2,180 mm Machine weight: 8 t EQUIPMENT High-pressure coolant system (capacity: 500 l) Chip conveyor with oil mist separator / industrial filter IFM 1000CTV Workpiece loading and unloading device with 20 stations Power chuck (225 mm) Hydraulics 6x various turning tool holders 2x various tool holders (rotating)

Condition: good (used), Year of construction: 2018, Ref. -No.: 10531 Manufacturer: HONOR SEIKI Type: VL - 400CM Year of construction: 2018 Type of control: CNC-Steuerung Control: Siemens SINUMERIK 840D Gedozc Dz Nopfx Albouc Storage location: Halberstadt Country of origin: Taiwan Machine-No.: 79XXX C-Axis: Yes C-axis speed: 50 - 2250 RPM Turning Height: 2370 mm Table Diameter: 4000 mm Rapid Travel Speed X-Axis: 10 m / min Rapid Travel Speed Z-Axis: 10 m / min Rotate table rotation speed: 1 - 85 RPM Max. Workpiece Weight: 30 kg Max. Turning diameter: 4 mm Distance between faceplate and crossbar support: 820-3320 mm Work feed: mm / min Number of tools in the chain magazine: 24 Crossbar adjustment: 300 x 300 mm Spindle motor drive: AC60/75/100 kW Servo motors (X/Z axes): 5,5 / 5,5 kW Machine length: 9 mm Machine width: 7000 mm Machine Height: 8000/9100 mm Weight Of The Machine Ca.: 115 t Further information: - 2-stage gear change - ATC (Automatic Tool Change) 16/20/24 - Tool size 25 x 32 x 40 - Driven tool motor AC15/18.5 Machine is still in production and can be inspected by appointment.

Condition: used, Year of construction: 2014, 2 Vertical Turning Machines (Tandem) Manufacturer: EMAG Model: VL 3 Year: 2014 Control: Fanuc 31/32i Gsdpoytn Emjfx Albeuc TECHNICAL SPECIFICATIONS FOR THE VL3 MACHINE (Subject to errors and omissions) WORKING AREA Chuck diameter: 170 mm Swing diameter: 210 mm X-travel: 400 mm Z-travel: 200 mm Loading time (depending on clamping device): 2–4 sec MAIN SPINDLE Spindle flange to DIN 55026, size 5 Spindle bearing diameter (front): 80 mm Maximum spindle speed: 7,500 rpm MAIN DRIVE AC asynchronous motor Power at 40/100% duty cycle: 25/16 kW Full power from spindle speed (100% ED): 1,800 rpm Torque at 40/100% duty cycle: 134/85 Nm FEED DRIVE Rapid traverse speed, X axis: 60 m/min Rapid traverse speed, Z axis: 30 m/min Feed force (X and Z): 5 kN Ball screw diameter (X/Z): 40 mm TURRET Cylinder shank mount DIN 69880, 12 positions Shank diameter: 40 mm ELECTRICAL EQUIPMENT according to VDE 0113 Operating voltage: 400 V Control voltage – DC: 24 V; AC: 230 V Frequency: 50 Hz Connected load without/with live tool: 28 / 31 kW Supply line protection: 50 A DIMENSIONS & WEIGHT Length: 2,500 mm Length incl. chip conveyor: 3,600 mm Width: 1,900 mm Height: 2,300 mm Weight: approx. 5,500 kg Linear roller guides in the X-axis located outside the machining area. GANTRY SLIDE INCLUDING SLIDE GUIDE Motor spindle mounting AC synchronous drives for X and Z axes Encapsulated linear measuring systems Resolution all longitudinal axes: 0.001 mm (absolute measurement) Rapid traverse: X axis 60 m/min, Z axis 30 m/min 1 MOTOR SPINDLE size 5 DIN 55026 Max. speed: 7,500 rpm Power at 40/100% duty cycle: 25/16 kW Torque at 40/100% duty cycle: 134/85 Nm HYDRAULIC UNIT with gear pump. CENTRALIZED OIL SUPPLY for lubrication of ball screws and roller guides COOLING UNIT Controls the machine’s thermal balance. Keeps motor spindle, turret, and control cabinet at ambient temperature. TOOL CARRIER SYSTEM 1 12-STATION TURRET with mounting holes Ø40 DIN 69880 Shortest indexing time via electric motor drive Cooled for consistent accuracy Internal coolant supply to tool in cut position WORKPIECE STORAGE & TRANSPORT SYSTEM 1 CIRCULATING WORKPIECE FEEDER Storage capacity: 27 workpieces (Ø 30–85 mm), or 18 workpieces (Ø 30–130 mm), Max. workpiece height: 100 mm Loading height: 1020 mm Chain-type accumulating conveyor with transport prisms Workpieces are NC-positioned for clamping device take-over. The pick-up spindle retrieves blanks from the conversion-free storage and conveyor system. COOLANT AND CHIP REMOVAL SYSTEM 1 COOLANT SUPPLY with integrated coolant tank, capacity approx. 300 l, coolant filter Coolant pump delivery rate: approx. 80 l/min at 7 bar 1 CHIP CONVEYOR Discharge height: 1,250 mm, hinge belt design 1 EMULSION MIST EXTRACTION from the machining area ADDITIONAL EQUIPMENT AND EXPANSIONS WORKPIECE STORAGE & TRANSPORT SYSTEM 1 INTERFACE FOR EMAG TRANSFER AND FLIP UNIT OP20 COOLANT AND CHIP REMOVAL SYSTEM 1 FLUSHING NOZZLES: 2x in working area, 1x in machine base HYDRAULICS & PNEUMATICS 1 MAINTENANCE UNIT FOR COMPRESSED AIR with mounting 1 PICK-UP DEVICE BLOW-OFF (2 nozzles, WITHOUT maintenance unit – see maintenance unit compressed air)

Condition: good (used), Year of construction: 2001, Control: SIEMENS 840D Max. machining diameter: 2,800 mm Machining height: 1,000 mm Tool holder: CAPTO 6 Including chip conveyor and 2 supports Gsdpfjzacfnex Albeuc

Condition: good (used), Year of construction: 2001, Control: SIEMENS 840D Machining diameter: 4,000 mm Machining height: 1,400 mm Gusdpfx Ajzacfbelbec Cross slide travel: 850 mm Including chip conveyor and 2 supports

Condition: used, Technical details: spindle passage: 60 mm turning length: 45 mm turning diameter: max. 56 mm drill depth: max. 70 mm Godpsu Iwyijfx Albouc revolution per minute: 48 - 1500 (spindle) U/min threading: Drehzahl: 24 - 750 U/min tool turret - number of stations: 8 total power requirement: 5,5 kW weight of the machine ca.: 2,4 t space requirement of the machine approx.: L:2,1x1,0x1,8 m Cam-controlled automatic lathe according to template. Workpiece is clamped via clamping cartridge. Turret head: disk turret Hahn&Tessky Esslingen, tool path 80mm, adjustment 36mm, distance collet/turret head min./max.: 72/188mm 2 pieces turning support, working stroke 45mm 2 piece cutting off support, working path approx. 40mm Cooling water system Machine is not connected. Sale at a low selling price. *

Condition: good (used), Year of construction: 2010, functionality: fully functional, We offer you: CNC vertical turning center Manufacturer: EMAG Type: VSC 250 Duo DD Year of manufacture: 2010 / 2012 Gujdpfjzdbv Tox Alboc Control system: Siemens 840D sl Technical data: Max. turning diameter: 250 mm Max. swing diameter: 260 mm Main spindle: Max. speed: 4,500 rpm Max. torque: 250 / 340 / 460 Nm Spindle bore: 52 mm Chuck diameter: 250 mm Tool turret: Number of turrets: 2 Number of tool positions: 12 Max. tool diameter: 50 mm Max. workpiece weight: 20 kg Max. workpiece diameter: 240 mm Feeds: Rapid traverse (x / z): 45 / 30 m/min Total power consumption: 66 / 75 kW Machine weight: approx. 16 / 18.5 tons There are 3 identical machines available, 2 manufactured in 2010, 1 in 2012. Technical features & accessories: - Marposs measuring system - Open automation - W10 loading portal - Safety guard - Minimum quantity lubrication - In-process quality control - Central coolant supply (not included) - Chip conveyor Accessories, tools and clamping devices shown in the images are only included in the scope of delivery if this is stated in the additional information. Subject to change and errors in the technical data and information, as well as prior sale!

Condition: good (used), Year of construction: 2010, functionality: fully functional, We offer you: CNC vertical turning center Manufacturer: EMAG Type: VTC 250 LEAN Year of manufacture: 2010 Control: Siemens 840D sl Technical data: Max. turning diameter: 140 mm Max. turning length: 700 mm Max. swing diameter: 376 mm Main spindle: Max. speed: 5,000 rpm Max. torque: 256 Nm Spindle bore: 52 mm Chuck diameter: 250 mm Tool turret: Number of turrets: 1 Number of tool positions: 5 + gripper / 11 + gripper Max. tool diameter: 125 mm Max. tool weight: 10 kg Max. tool length: 120 mm Max. workpiece weight: 20 kg Feed rates: Rapid traverse (x / z): 40 / 30 m/min Total power consumption: 45 kW Machine weight: approx. 12 tons There are 6 identical machines available. Technical features & accessories: - Open automation Gujdpfx Aljzdbtxebjc - Safety device - Preparation for extraction - Handling infeed and outfeed - Central extraction (not included) - Central coolant supply (not included) - Chip conveyor (1 for 3 machines) Accessories, tools and clamping devices shown in the pictures are only included in the scope of delivery if this is mentioned in the additional information. Subject to changes and errors in the technical data and information, as well as prior sale!

Condition: good (used), Year of construction: 2011, functionality: fully functional, We offer you: CNC vertical turning lathe Manufacturer: EMAG Type: VTC 250 Year of manufacture: 2011 / 2012 Control: Siemens 840D sl Technical data: Max. turning diameter: 250 mm Max. turning length: 630 / 730 mm Max. swing diameter: 140 / 260 mm Main spindle: Max. speed: 3,500 / 4,000 rpm Max. torque: 256 Nm Spindle bore: 50 / 52 mm Chuck diameter: 250 mm Tool turret: Number of turrets: 2 Max. tool weight: 10 kg Max. tool length: 90 mm Max. workpiece weight: 20 kg Guodpfxszdbtfo Albec Feeds: Rapid traverse (x / z): 40 / 30 m/min Total power requirement: 45 kW Machine weight: approx. 14 / 16 tons There are 2 units manufactured in 2011 and 1 unit manufactured in 2012 available. Technical features & accessories: - Year of manufacture 2011: Number of bed and cross slides: 2 - Year of manufacture 2012: Number of bed and cross slides: 1 - Tool monitoring - Protective guard - Collision monitoring - In-process quality control - Central coolant supply (not included) - Chip conveyor Accessories, tools and clamping devices shown in the pictures are only included in the scope of delivery if this is noted in the additional information. Subject to changes and errors in technical data and specifications, as well as prior sale!

Condition: good (used), Year of construction: 2007, travel distance X-axis: 6,000 mm, travel distance Y-axis: 500 mm, travel distance Z-axis: 200 mm, - Speed range: [rpm]: 6,000 - Torque: [Nm]: 480 - Max. turning diameter over bed: 290 mm - Chuck diameter: 200 mm - Turret: 12-position, VDI 40, Sauter - Driven tools: 7.8 kW - Travel: - X-axis: 550 mm - Z-axis: 200 mm - Rapid traverse (X/Z) [m/min]: 30 / 20 - Feed (X/Z): [m/min.] 11 kN - Features: - Left-hand chip conveyor; 300 mm wide; ejection height 800 mm Gusdpszcdkdjfx Albjc - Probe; direct linear measuring system; glass scales on all axes - Heidenhain circulating pickup tape - Machine with feed belt for part loading - Specification: - Overhauled in 2007 for approx. €50,000, complete headstock replaced. - Feed unit exchanged.

Condition: good (used), Year of construction: 1990, Control system: Siemens 840-C Faceplate diameter: 1800 mm Swinging diameter: 2000 mm Maximum turning height: 1100 mm (below tool) Table speed: 130 RPM Workpiece weight: 8000 kg Tool changer: 12 positions Gujdezadagjpfx Albec