Used 3X Piece Docking Mills for sale (19,276)

Condition: good (used), Tool holder, milling tool holder Ppsdpjb A N E Tsfx Al Ser -Number: 7x SK50 recording -Inner diameter: 32 mm -Drill chucks: Surface clamping chucks, reducing sleeves, cutter heads, end mills, spindle tools -suitable for: tool changers -Sale: only complete set -Weight: 4.6 kg

Condition: good (used), end mill, end mill, milling cutter -Outer diameter: 100 mm -Inner diameter: 40 mm -Teeth: 10 -Price: complete -Quantity: 3 pieces -Weight: 4 kg Ppsdob A Ragjpfx Al Sor

Condition: new, functionality: fully functional, Workpiece stop made of two-tone anodized aluminum for drilling and milling machines. T-slot nut for 16mm slot 16/9/25 Includes T-slot nut, stop rod, and hex key (Allen key). Pjdpoymmrrsfx Al Sopr

Condition: like new (used), Year of construction: 2004, functionality: fully functional, overall weight: 13,000 kg, type of input current: three-phase, input voltage: 400 V, input current: 1,250 A, Complete medium and low voltage system including three 1000KVA 20KV transformers Ppjdpfxsy Hf Ums Al Sor Comprised of: 3x Pauwels transformer 1000KVA 20000V 1x Alstom medium voltage switchgear for incoming ring circuit, 20KV Alstom load disconnect switch tap-off Outgoing measurement, 3x fuse outgoing circuits for 3x transformers 1x Siemens Sikus low voltage switchgear, power supply from 3 transformers, incl. 3 coupling switches for busbar connection Various outgoing terminals NH00 NH1 NH2 For further questions, please contact by phone or email. More pictures and details, nameplates available on request. Top condition – almost as new – see pictures. Dismantling was performed by an electrical company. All busbar connectors and bolts are included. Internal wiring for power metering has been withdrawn and labeled. Volume: one complete truck, 13.6 ldm, approx. 13,000KG including transformers. Collection only by appointment in 75053 Gondelsheim. A forklift is available for loading. Shipping possible via freight carrier, please inquire with postal code.

Condition: not inspected (used), functionality: unexamined, No minimum price – guaranteed sale to the highest bidder! Bidding obligates prompt collection between 23/06/2026 and 26/06/2026! Auction of three chip trolleys! MACHINE DETAILS Ppodjy D Sk Aopfx Al Sor Dimensions & Weight Dimensions (L x W x H): 2,000 x 1,000 x 1,100 mm Weight: 300 kg EQUIPMENT Fitting for forklift handling External reference: 71

Condition: used, Tube forming mill OME 320x8mm (A3782) Tube forming mill OME 320x8mm (A3782) for tube production of 323mm maximum diameter and 8mm maximum wall thickness Make: Ome (Italy) Material: HR, CR, Galv Condition: New Tube Diameter: 168mm – 323mm Wall Thickness: 2mm – 8mm Direction: L-R Speed: 35 meters per minute FORMING MILL Pass N. 1 Driven Forming # 1 Pass N. 2 Driven Forming # 2 Pass N. 3 Driven Forming # 3 Pass N. 4 Driven Forming # 4 Pass N. 5 Driven Forming # 5 Pass N. 6 Driven Forming # 6 Pass N. 7 Side Idle Forming Pass N. 9 Driven Forming # 7 Pass N. 10 Side Idle Forming FIN-PASS SECTION, SINGLE POINT ADJUSTMENT Pass N. 11 Driven Fin Pass # 1 Pass N. 12 Side Idle Fin Pass Pass N. 13 Driven Fin Pass # 2 Pass N. 14 Side Idle Fin Pass Pass N. 15 Driven Fin Pass # 3 Pass N. 16 Driven Fin Pass # 4 SIZING SECTION Pass N. 26 Driven Sizing # 1 Pass N. 27 Driven Sizing # 2 Pass N. 28 Driven Sizing # 3 NDT Prueftechnik Pass N. 29 Driven Sizing # 4 Pass N. 30 Driven Sizing # 5 STRAIGHTENING AND SQUARING SECTION Pass N. 31 Idle Turkshead #1 Roll holder plates NOT available Pass N. 32 Idle Turkshead #2 Roll holder plates NOT available Pass N. 33 Idle Turkshead #3 Roll holder plates NOT available Pass N. 34 Idle Turkshead #4 Roll holder plates NOT available Tables and tools for rolls change ABB Motors Costamasnaga Reducers Centralized lubrication system Hydraulic Power Unit Complete Mill Portion Automation with diagrams (OTO MILLS/Elletre 2013) Pedpfx Aljq Ul Rve Sopr Complete hydralic system Fume and Vapors exhaust system with extraction hoods (EUROFILTER) Complete Zinc exhaust system (DONALDSON)

Condition: used, TUBE MILL OTO MILLS 219.10 The OTO MILLS 219.10 is a heavy-duty tube mill, characterized by its rigid mechanical construction and its integration of high-tier industrial components, making it a stable continuous, high-quality industrial production line. Technical specifications · Manufacturer: OTO MILLS · Tube diameter: 88.9 - 219 mm · Square: 90x90 - 200x200 mm. · Rectangular: 20x60 - 250x150 mm. · Thickness: 2.5 - 10 mm. · Speed: Max. 80 m/min · Coil weight: Max. 16 Ton · Tube length: 6 - 12 m Scope of supply · Entry line · OTO 219.10 forming and sizing system · Cutoff and runout system · Electrical and electronic parts · Hydraulic system · Tooling · Thermatool HF welder cfi 600 kw Ppjdpfoym Dbdox Al Sjr · Double seam annealer (500 kw x 2) – Thermatool · Online Eddy current – Foerster · Semi-automatic packaging machine · Tube inside scarfing system – Alpha Metall Tube diameter: 88.9 - 219 mm Square: 90x90 - 200x200 mm. Rectangular: 20x60 - 250x150 mm. Thickness: 2.5 - 10 mm. Coil weight: Max. 16 Ton Tube length: 6 - 12 m Speed: Max. 80 m/min

Condition: used, OTO MILLS Strip Joiner 100% automatic butt-welding unit GG566 - Complete automatic joining and welding process - Strip exit table with encoder - Motorized strip exit Pinch-roll OTO Mills Ppodsymatvjpfx Al Sjr 100% automatic butt-welding unit: GG566

Condition: used, Complete entry line, made by OTO MILLS - Double Decoiler with bottom/top hold-down roll - Strip peeler & Pinch-roll - Automatic strip joiner - Extra-sized horizontal accumulator Scope of supply includes: Double Uncoiler AD508SD - Double hydraulic expansible mandrel - Hydraulic Mandrel rotation - Hydraulic Uncoiler rotation/lock - Hydraulic Uncoiler traverse for alignment - Brake pneumatically-operated disc OTO Mills Pinch-Roll and flattener PRS566 - 3+2 rolls Psdsymatispfx Al Sepr - Hydraulic roll positioning OTO Mills 100% automatic butt-welding unit GG566 - Complete automatic joining and welding process - Strip exit table with encoder - Motorized strip exit Pinch-roll OTO Mills Horizontal Accumulator - Heavy Duty horizontal accumulator - Motorized Feeding Pinch-roll – 106 KW - Rotating table with Main motor 106Kw - Approx. 6,5 meter external table - Exit strip guiding Turret OTO Mills Tube diameter: 76,1 - 168,3 mm Material thickness: 2 - 6.3 mm Double Uncoiler: AD508SD Pinch-Roll and flattener: PRS566 100% automatic butt-welding unit: GG566 Accumulator: Heavy Duty horizontal accumulator

Condition: used, OTO MILLS ACCUMULATOR HA506RT Strip size up to 500mm x Max. 6.0mm Working range · Strip width: Max. 500mm · Thickness: 1.5 – 6.3mm · Material: HR, Galvanized, Pickled Horizontal Accumulator · Heavy Duty horizontal accumulator · Motorized Feeding pinch-roll · Pinch-roll motor and transmission DC 106 KW · External ring rotating table · Main motor rotating table DC 106Kw · Approx. 6 meter external table with vertical rolls · Inner ring Ppedpeymarxofx Al Sjr Strip passage · Strip Passage tower · Top and bottom strip guiding rolls Control panel · 1 panel for control of the accumulator Strip width: Max. 500mm Thickness: 1.5 – 6.3mm Material: HR, Galvanized, Pickled

Condition: used, OTO MILLS Double decoiler with bottom/top hold-down roll Model AD508SD Scope of supply includes: - Double hydraulic expansible mandrel - Hydraulic Mandrel rotation - Hydraulic Uncoiler rotation/lock - Hydraulic Uncoiler traverse for alignment - Brake pneumatically-operated disc OTO Mills Mandrel: Double hydraulic expansible mandrel Mandrel rotation: Hydraulic Ppsdpfxsymadze Al Sor Uncoiler rotation/lock: Hydraulic Uncoiler traverse for alignment: Hydraulic Brake pneumatically-operated disc: OTO Mills

Condition: used, OTO MILLS Vertical accumulator FLOOP FR321 The FLOOP OTO FR321 is a vertical strip accumulator designed to ensure a continuous and stable strip feeding process in welded tube mills and roll-forming lines. Its system allows the accumulator to be filled both while the line is running and while it is stopped, significantly reducing coil change time. It is a robust and reliable solution for high-speed production environments. Technical specifications Manufacturer: OTO MILLS Model: OTO FR 321 Strip thickness: 1.0 – 4.0 mm Strip width: 38 – 325 mm Yield strength: 270 – 400 N/mm² Maximum line speed: 160 m/min Maximum loading speed: 500 m/min Accumulation capacity (depending on thickness): up to 600 m Maximum strip elongation: 15 % Pinch-roll drive power: 75 kW Scope of Supply Complete OTO MILLS FLOOP FR321 vertical accumulator Existing mechanical spare parts Set of spare parts for conversion to AC drive (currently operating on DC) Strip thickness: 1.0 – 4.0 mm Strip width: 38 – 325 mm Yield strength: 270 – 400 N/mm² Maximum line speed: 160 m/min Maximum loading speed: 500 m/min Accumulation capacity (depending on thickness): Up to 600 m Maximum strip elongation: 15 % Pinch-roll drive power: 75 kW Ppedpfeyl Un Sex Al Ssr

Condition: used, Tube mill OTO 101.3 Manufacturers: OTO MILLS, SEUTHE & THERMATOOL The line is in operation and inspection during production is possible. The line is complete with: - OTO MILLS Entry line with Double uncoiler, Strip joiner & Strip accumulator - CANTI-SAG Forming, Sizing line & Turks heads TWL RS90 - THERMATOOL HF welder CFI 300kW - SEUTHE Flying saw TS90 - ATTL Automatic packaging unit - ITIPACK Strapping unit - OSU Metallization Technical data: - Diameter range: 32 – 101 mm - Squares: 20 x 20 - 70 x 70 mm - Rectangular: 40 x 20 - 80 x 50 mm - Thickness: 0.8 – 3.0 mm - Tube Length: 4 – 10 m - Voltage: 380 / 50 VAC / Hz - Direction: Left - Right - Material: Carbon steel – Hot rolled, pickled, galvanised, cold rolled - Tensile: 330 – 520 N/mm2 - Coil Weight: 2x6.000 Kg - Coil Width: 50 – 250 mm - Coil ID: 508 – 610 mm - Coil OD: 1100 – 2000 mm Scope of supply: 1. Entry line OTO MILLS with Double uncoiler, Strip joiner & Strip accumulator 2. Forming, Sizing line & Turks heads 3. THERMATOOL 300kW welder Ppedpeyl Uicefx Al Sor 4. Fume exhaust system 5. Cooling tunnel 6. Detwister unit 7. Flying saw Seuthe 8. Roll way 9. Automatic packaging machine 10. Itipack strapping machine 11. Electrical System 12. Pneumatic System 13. Hydraulic Systems Tube diameter: 32 - 101 mm Squares: 20 x 20 - 70 x 70 mm Rectangular: 40 x 20 - 80 x 50 mm Thickness: 0,8 - 3,0 mm Tube Length: 4 – 10 m Direction: Left - Right Material: Carbon steel – Hot rolled, pickled, galvanized, cold rolled Tensile: 330 – 520 N/mm2 Coil Weight: 2x6.000 Kg Coil Width: 50 – 250 mm Coil ID: 508 – 610 mm Coil OD: 1100 – 2000 mm

Condition: not inspected (used), functionality: unexamined, No reserve price – guaranteed sale to the highest bidder! Placing a bid obligates the buyer to timely collection, either between 11.05.2026 and 13.05.2026 or between 18.05.2026 and 21.05.2026! Auction of 3 vices! Psdjyn Ei Sspfx Al Sjpr TECHNICAL SPECIFICATIONS Jaw width: 50 mm, 50 mm, 65 mm MACHINE DETAILS Dimensions & weight Dimensions (L x W x H): 250 x 250 x 70 mm Weight: 10 kg External reference: Lot 38/ Hauser

Condition: used, OTO MILLS Complete tube mill 168.7 With top of the range equipments OTO MILLS line, EUROLLS rolling, THERMATOOL welding, MAIR packaging machine, BLISSENBACH internal deburring, etc. COMPLETE Tube Mill 168.7 with: 1. OTO MILLS Entry line 2. OTO MILLS 168.7 Forming and sizing system 3. OTO MILLS Cutoff and runout system 4. Electrical and electronic parts 5. Hydraulic power units 6. EUROLLS Complete sets of tooling & spares Ppodpfx Alexv Aaco Sor 7. THERMATOOL HF welder CFI500 kW 8. FOERSTER Online eddy current 9. COTIMPI End facing unit | 6m to 12m length 10. COTIMPI 280 Bar hydro testing unit 11. FOERSTER Offline eddy current: Main bed with drive unit; Testing devices 12. MAIR Automatic packaging machine – Mps Rh200/D/6/Sl 13. BLISSENBACH Tube inside scarfing system – Tube Range I.D. 45 To 165mm Tube diameter: 60,3 – 168,2 mm Square sections: 50x50 – 140x140 mm Rectangular sections: 60x40 – 160x100 mm Thickness: 2,0 – 7,1 mm Tube length: 3 - 12 m Speed: 90 m/min Entry line: OTO MILLS Forming and sizing system: OTO MILLS 168.7 Cutoff and runout system: OTO MILLS Complete sets of tooling & spares: EUROLLS HF Welder: THERMATOOL 500 kW Online eddy current: FOERSTER End facing unit: COTIMPI 6m to 12m length Bar hydro testing unit: COTIMPI 280 Offline eddy current: FOERSTER Automatic packaging machine: MAIR Tube inside scarfing system: BLISSENBACH | Tube Range I.D. 45 To 165mm

Year of construction: 2018, condition: refurbished (used), Flying cutoff unit TCC 120/168, made by OTO MILLS Recently revamped Complete flying cutoff unit including: - Accelerator (carriage transmission) - Main carriage motor - Cutoff unit TCC120 with base with linear guides, cutting head, clamping unit and support for tube at exit side - Control panel RENEWED - Electrical cabinet RENEWED - Hydraulic group - Cable chain - All existing documentation, manuals, drawings Specifications: - Type of saw : Friction - Material thickness : 1 –6 mm - Standard tube length : 3 –12 m - Diameter range : 42 –168 mm - Square tubes : 40x40 –130x130 - Rectangular tube : 50x30 –180x80 - Max. speed : 120 m/min - Length tolerance : +/-2 mm Round tube diameter: 42 – 168 mm Square tube diameter: 40×40 – 130×130 mm Rectangular tube diameter: 50×30 – 180×80 mm Material thickness: 1 – 6 mm Tube length: 3 – 12 m Type of saw: Friction Length tolerance: +/-2 mm Ppjdovtpp Nopfx Al Sjr Max. speed: 120 m/min

Condition: good (used), Year of construction: 1999, We offe an nice condition machine cnc smal size parts , machine was used in school for training purpose only. Ppodpfx Aovnzz Tsl Ser

Condition: used, Year of construction: 2000, functionality: limited functionality, overall weight: 3,000 kg, total length: 1,500 mm, total width: 700 mm, total height: 600 mm, input voltage: 380 V, type of input current: three-phase, year of last overhaul: 2010, Joint Strip Oto Mills (strip splicer), equipment suitable for splicing strips at the entry of the rollformer accumulator. Ppedpfexmaa Ijx Al Ssr

Condition: ready for operation (used), Year of construction: 2010, operating hours: 5,002 h, functionality: fully functional, machine/vehicle number: NT100JG0126, turning length: 424 mm, turning diameter: 370 mm, travel distance X-axis: 380 mm, bar passage: 52 mm, controller model: FANUC FS-31iA5 (MAPPS 4), TECHNICAL DETAILS Turning length: 424 mm Maximum turning diameter: 370 mm (270 mm with turret 2) Bar capacity: 52 mm Turn-mill spindle Full indexing specifications: Yes X-axis travel: 380 mm Y-axis travel: ±105 mm Z-axis travel: 460 + 155 mm (ATC) B-axis: ±120º Spindle speed: 12,000 rpm Drive power: 9/5.5 kW Tool magazine Magazine positions: 38 Tool holder: Capto C5 Maximum tool length: 250 mm (210 mm for tools under Ø70 mm) Maximum tool diameter: Ø70/Ø130 mm (with/without adjacent tools) Maximum tool weight: 5 kg Lower Turret X-axis travel: 155 mm Z-axis travel: 610 mm Number of tool stations: 10 Tool rotational speed: 6,000 min⁻¹ Driven tool power: 1.5/1.2 kW Main Spindle Spindle speed: 6,000 rpm Drive power: 11/7.5 kW Spindle bore: 73 mm Chuck type: Hollow chuck (8") Manufacturer: KITAGAWA Spindle nose: JIS A2-5 Maximum torque: 223 Nm Sub Spindle Spindle speed: 1,000 rpm BW axis: 4 fixed positions, 0º, -30º, -180º (-225º for overhang to conveyor, if equipped) MACHINE DETAILS Control: FANUC FS-31iA5 (MAPPS 4) Potential rated output: 39.24 kVA Dimensions & Weight Dimensions (L x W x H): 2,705 x 2,425 x 2,385 mm Weight: 8,800 kg Operating Hours Powered on: 54,061 hours Spindle 1 operating hours: 9,813 hours Spindle 2 operating hours: 5,002 hours EQUIPMENT Ppjdpjy Edc Hsfx Al Sor Chip conveyor Signal lamp High-pressure pump Air blower outside the spindle Foot switch (double) for main and sub spindle

Condition: ready for operation (used), Year of construction: 1994, functionality: fully functional, machine/vehicle number: 14219, travel distance X-axis: 1,250 mm, travel distance Y-axis: 900 mm, travel distance Z-axis: 560 mm, spindle diameter: 75 mm, spindle speed (max.): 1,800 rpm, With digital position display! TECHNICAL DETAILS X-axis: 1,250 mm Y-axis: 900 mm Z-axis (or W-axis): 560 mm Spindle diameter: 75 mm Spindle speeds: 18–1,800 rpm Spindle taper: SK-40 Table size: 950 mm x 950 mm MACHINE DETAILS Ppjdpfxoy Emq To Al Sor Weight: 10,000 kg EQUIPMENT All accessories shown in the photos, including tools, tool cabinets, and clamping devices

Condition: ready for operation (used), Year of construction: 2005, operating hours: 19,229 h, functionality: fully functional, machine/vehicle number: 8043943123C, turning length: 1,050 mm, turning diameter: 465 mm, travel distance X-axis: 300 mm, travel distance Z-axis: 1,050 mm, controller model: Siemens 840 D, TECHNICAL DETAILS Turning diameter: 465 mm Turning length: 1,050 mm Swing diameter: 680 mm Chuck diameter: 325 mm Ppedjy D I Ttopfx Al Sor X-axis travel: 300 mm Z-axis travel: 1,050 mm Spindle speed range: 3,500 rpm Rapid traverse X/Z: 30 m/min MACHINE DETAILS Control: Siemens 840 D Number of tool positions: 12 positions Tool holder: VDI 40 Weight: 7,500 kg Operating hours Spindle hours: 19,229 h Power-on hours: 81,347 h Note: The machine can be inspected under power upon request.

Condition: ready for operation (used), Year of construction: 2015, functionality: fully functional, machine/vehicle number: 5752, travel distance X-axis: 1,250 mm, travel distance Y-axis: 540 mm, travel distance Z-axis: 520 mm, spindle speed (max.): 2,000 rpm, table length: 1,800 mm, TECHNICAL DETAILS Travel X-axis: 1,250 mm Travel Y-axis: 540 mm Travel Z-axis: 520 mm Main spindle power: 7.5 kW Spindle speed: 275 - 2,000 rpm Table length: 1,800 mm Table width: 400 mm MACHINE DETAILS Control manufacturer: Heidenhain Number of axes: 3 Tool holder: BT50 Power: 12.0 kW Dimensions & Weight Dimensions (L x W x H): 2100 x 2100 x 2200 mm Weight: 3,600 kg EQUIPMENT Ppjdpfx Ajy Avvajl Ser Tools

Condition: ready for operation (used), Year of construction: 2019, operating hours: 2,770 h, functionality: fully functional, machine/vehicle number: NL257181158, turning length: 705 mm, travel distance X-axis: 260 mm, travel distance Y-axis: 50 mm, travel distance Z-axis: 795 mm, swing diameter over cross slide: 742 mm, swing diameter over bed slide: 920 mm, TECHNICAL DETAILS Working Area Swing diameter over bed max.: 920 mm Swing diameter over cross slide max.: 742 mm Turning length max.: 705 mm Bar capacity: 80 mm X-axis travel: 260 mm Y-axis travel: 50 mm Z-axis travel: 795 mm Main Spindle Power: 18.5/15 kW Max. speed: 4,000 rpm Chuck size: 10 inch Spindle bore: 91 mm Front bearing diameter: 140 mm Sub Spindle Power: 11/7.5 kW Max. speed: 4,000 rpm Chuck size: 6 inch Spindle bore: 45 mm Front bearing diameter: 85 mm Turret and Axes Tool stations: 12 Tool shank cross-section: 25 mm Max. driven tool speed: 10,000 rpm Rapid traverse X-axis: 30,000 mm/min Rapid traverse Y-axis: 10,000 mm/min Rapid traverse Z-axis: 30,000 mm/min Rapid traverse B-axis: 30,000 mm/min MACHINE DETAILS Control: M730UM with CELOS Operating hours: 2,770 h Power-on hours: 10,820 h Dimensions & Weight Machine height: 2,000 mm Installation dimensions: 3,347 x 2,106 mm Weight: 5,820 kg EQUIPMENT Y-axis Sub spindle Main spindle with 10-inch chuck Sub spindle with 6-inch chuck Chip conveyor Podpfx Asy A Nf Isl Sjpr High-pressure coolant system Tool measuring system Parts catcher Workpiece ejector Interface for bar loader

Condition: ready for operation (used), Year of construction: 2008, functionality: fully functional, turning length: 1,585 mm, turning diameter: 300 mm, controller model: Siemens 840D Powerline, number of slots in tool magazine: 120, No minimum price – guaranteed sale to the highest bidder! TECHNICAL DETAILS Turning length: 1,585 mm Turning diameter: 300 mm Tool magazine capacity: 120 positions MACHINE DETAILS Control: Siemens 840D Powerline Ppsdpfxey Dqtij Al Sjr EQUIPMENT Sub spindle C-axis Hollow clamping device (diameter 68 mm) on main spindle, left Measuring device with probe Oil mist separator

Condition: excellent (used), Year of construction: 1990, functionality: fully functional, travel distance X-axis: 1,600 mm, travel distance Y-axis: 920 mm, travel distance Z-axis: 950 mm, spindle diameter: 128 mm, controller model: HEIDENHAIN iTNC530, The machine was overhauled and modernized in 2005. Repairs were carried out in 2025. The following work was performed: - Cleaning of the machine - Overhaul and adjustment of machine geometry - Overhaul of machine functionality - Overhaul of electrical equipment - Overhaul of hydraulics and lubrication - Backlash compensation and drive optimization - Replacement of guideway wipers - Repair of the telescopic cover - Overhaul of the CHOV-K 10 bar tool cooling system - Overhaul of the AVN40 tool changer TECHNICAL DETAILS Main spindle diameter: 128.57 mm Tool holder: ISO 50 Spindle speed range: 5,000 rpm Travel X-axis: 1,600 mm Travel Y-axis: 920 mm Travel Z-axis: 950 mm Clamping surface of table: 850 x 850 mm (850 x 1,600 mm including additional supports) Table load capacity: 3,000 kg MACHINE DETAILS Control: HEIDENHAIN iTNC530 EQUIPMENT - Handwheel - SIEMENS motors and drives Ppedpfx Aoy Edl Usl Ser - CNC table - full B-axis control - CHOV-K 10 bar - through-spindle cooling – emulsion - ATC40 - automatic tool changer - Operator console protected against chips and coolant - Workpiece cover