Used Condux Cs 800/1000 for sale (17,721)

Condition: used, Year of construction: 2002, operating hours: 1,230 h, turning length: 120 mm, turning diameter: 190 mm, spindle speed (max.): 6,000 rpm, travel distance X-axis: 135 mm, travel distance Y-axis: 40 mm, travel distance Z-axis: 450 mm, bar passage: 40 mm, CNC Lathe Manufacturer: MORI SEIKI Model: ZT 1000 Y Year of Manufacture: 2002 Control System: MSG-501 Technical Details: Turning Diameter: 190 mm Turning Length: 120 mm Max. Swing Diameter: 250 mm Distance Between Centers: 750 mm Bar Capacity (Through-bore): 40 mm X-axis: 135 mm Z-axis: 450 mm Y-axis: ±40 mm Spindle Speed: 6,000 rpm Number of Tool Stations: 16 positions Operating Hours: approx. 1,230 h The machine comes from its first owner and has very low operating hours. It has been very well maintained and can be inspected under power by appointment. Technical Features & Accessories: - Chip conveyor - Parts catcher and discharge conveyor Pjdpfxj Aaq Uge Abujrc - High-pressure coolant system - 16-station upper turret with Y-axis - Bar feeder interface - Hainbuch collet chuck system - Three-jaw chuck - Static and driven (live) tool holders Accessories, tools, and work-holding devices shown are included in the scope of delivery only if explicitly stated in the additional information. Subject to changes and errors in the technical data and specifications; prior sale reserved!

Condition: used, axle configuration: 2 axles, first registration: 10/2026, color: other, Year of construction: 2006 Empty weight: 3.790 kg Axle 1: left 10 mm right 10 mm Axle 2: left 10 mm right 10 mm Axle 3: left 10 mm right 10 mm Pedpfsz Im Tbsx Abujrc We have the possibility to stack trailers!

Condition: new, machine/vehicle number: 20260303041, fuel type: diesel, motor manufacturer: Hyundai DP222CC, General information Prjdpfx Aozylhdjbusc Year of manufacture: 2026 Field of application: Construction Weights Empty weight: 6.748 kg Functional Generator capacity: 1.000 kVA Dimensions of cargo space: 499 x 195 x 250 cm CE mark: yes Other information Fuel consumption: 147 Liter per Hour at 75% Load Generator: Leroy Somer TAL-A49D Frequency: 50 Voltage: 400 Drill equipment: Tank, Battery, Control Panel, Steel canopy Water tank volume: 1130 l Additional information Please contact Team DPX for more information = Additional options and accessories = - Battery - Control Panel - Steel canopy - Tank

Condition: like new (used), Year of construction: 2023, operating hours: 6 h, KUKA KR 1000 titan F Technical data: Manufacturer: KUKA Model: KR 1000 titan F Kinematics: Year of manufacture 2023 Controller: KUKA KR C4, Year of manufacture 2015 Payload: 1,000 kg Maximum reach: 3,202 mm Number of axes: 6 Repeatability: ±0.1 mm Robot weight: approx. 4,690 kg Mounting: Floor mounting The system consists of a KUKA KR 1000 titan F from 2023 and a KUKA KR C4 controller from 2015. Immediately after the acquisition of the new kinematics in 2023, the KUKA KR C4 controller was adapted to the KR 1000 titan F by updating and configuring the controller software. The integration and subsequent commissioning of the complete system were carried out by an official KUKA system integrator. Operating hours: Kinematics (2023): Approx. 5.75 actual operating hours, measured based on the travel time with the brakes released. KR C4 controller (2015): According to the available information, less than 100 operating hours before the software-side adjustment in 2023. The kinematics were used exclusively for testing purposes and have only moved loads of approximately 30 kg. Both components have never been used under regular production conditions. The complete system is fully functional and ready for operation. Equipment and scope of delivery KUKA KR 1000 titan F kinematics KUKA KR C4 controller KUKA smartPAD All necessary connection cables Operating software and existing software packages Stäubli automatic tool changer, designed for 1,500 kg 4 components on the robot side and 4 on the tool side Technical documentation, operating manuals and CE documentation Inspection and transport An inspection, including a functional demonstration, is possible after prior arrangement. The system is already in transport position and ready for collection. Pedpfe Ad I Ursx Abuerc Loading onto a truck can be organized on site. If you have any questions or require further information, please do not hesitate to contact us. An inspection can be arranged at any time here in Bremen. _____ Subject to prior sale and errors in the technical data. The technical data has been compiled to the best of our knowledge, but does not constitute guaranteed characteristics. Our general terms and conditions apply; in addition, the seller is not liable for typing or data transmission errors. The appearance of the offered items corresponds to their age and the pictures shown. The technology and wear and tear of the offered items correspond to their age. Used machines are sold exclusively to commercial customers and without guarantee.

Condition: good (used), Code: 0347 Brand: CENTAURO Model: CO 800 - CE Standard Band saw with covered wheel for cutting wood materials, joinery, furniture, furnishings, window frames, plastics, aluminum, composite materials and various - CE Standard Technical data: Cast iron flywheel diameter mm 800 Max cutting height mm 520 Height of table from floor mm 960 Table dimensions mm 1170 x 800 Max blade length mm 5670 Motor Hp 5,5 Tilting work table Telescopic blade guard N° 2 suction inlets diameter 120 mm Overall dimensions: mm 1550 x 850 x 2500 h Weight kg 630 Pedpe Agaxpefx Abujrc

Condition: used, Year of construction: 1999, with CNC control, manufacturer: FIDIA, type: M 2, travel distances: X-axis: 4000 mm, Y-axis: 1000 mm, Z-axis: 1700 mm, with automatic tool changer with 10 tool positions, 2 pcs. clamping angles, manufacturer: MECOF, with 2nd exchangeable spindle HSK 50. Predpfj Af Nlujx Abusc

Condition: used, Thermotron Type: Thermotron SE-1000-5-5 Water-cooled Thermotron temperature chamber SE-1000-5-5 Dimensions of the working area - WxDxH: 102 x 100 x 97 centimeters Working area volume: 986 liters Temperature uniformity: ± 0.5°C Temperature range: -70°C to 180°C Temperature control tolerance: 0.3°C Overall dimensions - WxDxH: 122 x 188 x 218 centimeters Electrical requirements 400/3/50 32.4 A Refrigerant: R-404A / R23 Approximate weight: 862 kg For your safety as a buyer, please note the following information: The following steps are carried out on our offered chambers in advance: 1. Functional check and replacement of necessary components 2. Refilling with legally compliant refrigerant 3. Leakage test with certificate 4. After successful inspection, the chambers are subjected to a test run, which is monitored with calibrated equipment. Condition: used Scope of delivery: (See image) Prodpfx Abozd R S Njuoc (Changes and errors in the technical data and information are subject to change!) We will be happy to answer any further questions you may have over the phone.

Condition: used, Beumer bar band 1360-680-430 + injection unit 30° 800-680-430 Predsk Aa Rnspfx Abusc RA1262 Injection unit 30° consisting of a clock band and a triangular band. Scaffolding and cladding are made of profiled steel sheet. The drive is carried out by means of a gear edgear motor and belt drive. Without control and connections to upstream and downstream conveyors Technical data: Manufacturer: Beumer Year built: unknown Condition: good (used) Engine: fully functional Data Triangular Band Type: Injection unit 30° 800-680-430 Angle (injection): 30° Conveyor length (FL): 1360 mm Nominal/outer width (NB): 680 mm Usable width (NUB): 430 mm Wide transport belt: 393 mm Drive drum: dia. 74 mm Deflection roller: 63.5 mm Funding speed: 2.0 m/sec Engine power: 0.55 kW Data clock band: Type: Tape 1360-680-430 Function: Acceleration tape Conveyor length (FL): 800 mm Nominal/outer width (NB): 680 mm Usable width (NUB): 430 mm Belt width: 400 mm Axle distance: 708 mm Deflection roller: 68 mm Funding speed: 1.9 m/sec Engine power: 0.55 kW Price plus VAT from central warehouse Dr. Sonntag KG 97076 Würzburg Payment: after invoicing with advance payment Delivery time: approx. 3 - 5 working days after receipt of payment Für eine individuelle, fachmännische Beratung setzten Sie sich einfach mit uns in Verbindung. Kontaktieren Sie uns einfach telefonisch oder per Mail. Wir helfen Ihnen gerne bei der Planung und Umsetzung Ihrer Projekte. Wir freuen uns darauf von Ihnen zu hören. Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik

Condition: used, Year of construction: 2014, Kannegiesser belt conveyor GF 6000-880-800 RA2299 Make: Kannegiesser as good as new, exhibition machine Predpstvhvvofx Abuec year of construction 2014 Conveyor length (FL): 6000 mm Belt width (GB): 800 mm Nominal/outer width (NB): 880 mm Conveyor speed: freely adjustable between -0,95 and 0,95 m/s Electrical data: 380V, 0.25kW Without controls/connections to upstream and downstream conveyors Scope of delivery: without supports and side guides (please enquire if required) Optional: Supports Side guides on one and both sides Price: plus VAT ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg Für eine individuelle, fachmännische Beratung setzten Sie sich einfach mit uns in Verbindung. Kontaktieren Sie uns einfach telefonisch oder per Mail. Wir helfen Ihnen gerne bei der Planung und Umsetzung Ihrer Projekte. Wir freuen uns darauf von Ihnen zu hören. Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik

Condition: used, Year of construction: 1992, Transnorm belt curve conveyor 30°-800-700 IR900 right RA2256 Technical data: Manufacturer: Transnorm Condition: good (used) Conveying angle: 30° Nominal/outer width (NB): 800 mm Belt width (GB): 700 mm Inner radius (IR): 900 mm Psdpjrrxc Djfx Abujrc Overall height (BH): 210 mm Motor height (MH): 450 mm Motor type: SEW geared motor, SA42 DT71D-4 Electrical data: 380-500 V, 0.37 kW Conveying speed: please contact us Scope of delivery: without supports (please enquire if required) Optional: Supports Side guides Frequency converter for infinitely variable speed control Price plus VAT ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg Für eine individuelle, fachmännische Beratung setzten Sie sich einfach mit uns in Verbindung. Kontaktieren Sie uns einfach telefonisch oder per Mail. Wir helfen Ihnen gerne bei der Planung und Umsetzung Ihrer Projekte. Wir freuen uns darauf von Ihnen zu hören. Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik

Condition: used, Lippert rising falling Incline belt conveyor GF 3050+800-750-600 RA2258 Technical data: Conveyor length (NL): 3850 mm ( 3050 mm + 800 mm ) frame width (NB): 750 mm, 800 mm with motor belt width (GuB): 600 mm Overall height (BH): 105 mm, 430 mm with motor Angle: 15° Supporting feet: optionally available Conveying speed (v m/s): contact us Drive: SEW gear motor, R17 DR63LA/TH/Z Electrical data: 50Hz V380-500, kW 0,25 S1 Drive drum: Ø = 81 mm Belt return roller: Ø = 81 mm Optionally available: Supports Side guide on one side and on both sides Frequency converter for stepless speed change Adjust length (longer/shorter) Prices net plus VAT ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg, Germany For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics Pjderrxc Sspfx Abujrc

Condition: used, Year of construction: 2015, Lippert rising falling Incline belt conveyor GF 800+6450+5550-750-600 RA2128 Technical data: Conveyor length (NL): 12800 mm ( 800 mm forward run 6540 mm ascending belt + 5550 mm top bend ) frame width (NB): 750 mm, 800 mm with motor belt width (GuB): 600 mm Overall height (BH): 105 mm, 430 mm with motor Angle: 15° Supporting feet: optionally available Conveying speed (v m/s): contact us Drive: SEW gear motor, R37 DRE80M4/TH Electrical data: 50Hz V380-500, kW 0,75 S1 Drive drum: Ø = 81 mm Belt return roller: Ø = 81 mm Optionally available: Supports Side guide on one side and on both sides Frequency converter for stepless speed change Adjust length (longer/shorter) Prices net plus VAT ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg, Germany For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Prodperudbuofx Abusc Your specialist and contact for intralogistics

Condition: used, Year of construction: 2008, Transnorm inclined inlet Rejector Rejector Roller spiral 45°/90°-900-800 RA2236 Year of construction: 2008 Conveying angle (WZ + WR): 45° + 45° Mean length (ML): 1150 mm Nominal/outer width (NB): 900 mm Effective width (NUB): 800 mm Conveyor speed: please contact us Roller diameter: 50 mm steel + conical plastic-coated rollers Drive: SEW geared motor Electrical data: 0.55 kW, 380-480 V Center distance: 75 mm Overall height: 120 mm, 450 with motor Overdrive with chain Prodpfx Absri Snlouec Optionally available: Supports Lateral guide on one and both sides Frequency converter for infinitely variable speed control Ball roller table for infeed and outfeed Prices net plus VAT ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg For individual, expert advice, simply get in touch with us. Simply contact us by phone or email. We will be happy to help you plan and implement your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 2014, Transnorm conveyor belt GF 13900-900-800 RA2211 Technical data: Conveyor length (NL): 13900 mm frame width (NB): 900 mm, 1000 mm with motor belt width (GuB): 800 mm Overall height (BH): 80 mm, 430 mm with motor Supporting feet: optionally available Conveying speed (v m/s): please contact Drive: SEW gear motor, R27 DRE80M4/MM15/LN Electrical data: 50Hz V380-500, kW 1,1 S1 Drive drum: Ø = 81 mm Belt return roller: Ø = 81 mm Optionally available: Supports Side guide on one side and on both sides Frequency converter for stepless speed change Adjust length (longer/shorter) Prices net plus VAT ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg, Germany Prodjrg Nzmspfx Abuec For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 2008, Transnorm curved belt conveyor right bend 90°-800-700 IR900 RA2080 Prodpen Tpvgofx Abujc Technical data: Manufacturer: Transnorm Condition: good (used) conveying angle: 90° nominal/external width (NB): 800 mm belt width (GB): 700 mm innerradius (IR): 900 mm overall height (BH): 210 mm motor height (MH): 450 mm Motor type: SEW gear motor, SA37/T DT71D4/TH Electrical Data: 380-500 V, 0,37 kW Conveying speed: 1x 0,67 m/s, 2x 0,25 m/s, 1x 0,33 m/s or 1x 0,83 m/s Scope of delivery: without supports (if required, please contact us) Optional: supports Side guides Frequency converter for stepless speed control Price plus VAT ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg Für eine individuelle, fachmännische Beratung setzten Sie sich einfach mit uns in Verbindung. Kontaktieren Sie uns einfach telefonisch oder per Mail. Wir helfen Ihnen gerne bei der Planung und Umsetzung Ihrer Projekte. Wir freuen uns darauf von Ihnen zu hören. Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik

Condition: used, Year of construction: 2014, Transnorm Rising falling Incline with forerun belt conveyor GF 4780+800-700-600 RA2103 Technical data: Predpfx Abspbiwrjujc Conveyor length (NL): 5580 mm (800 mm forerun + 4780 mm incline ) frame width (NB): 700 mm, 800 mm with motor belt width (GuB): 600 mm Overall height (BH): 80 mm, 430 mm with motor Supporting feet: optionally available Conveying speed (v m/s): Frequency converter for stepless speed controll Drive: SEW gear motor Electrical data: 50Hz V380-500, kW 0,55 S1 Drive drum: Ø = 81 mm Belt return roller: Ø = 81 mm Optionally available: Supports Side guide on one side and on both sides Adjust length (longer/shorter) Prices net plus VAT ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg, Germany For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 1995, Transnorm belt curve conveyor 90° helix spiral left 980-800 IR600 RA2044 Technical data Manufacturer: Transnorm Type: Belt curve 90° left Year of manufacture: 1995 Prodpfxsk Nt Rie Abusc angle: 90 running direction: left inner radius (IR): 600 mm useful width (NUB): 800 mm nominal/external width (NB): 980 mm Pitch: 180 mm/ 90°, 720 mm/ 360° Conveying speed (m/s): with frequency converter freely adjustable between 0.0117 and 0.5167Electrical data: 1.5 kW / S1, 380-500 V Scope of delivery: without supports and side guides (please inquire if required) including frequency converter new belt optional: supports side guides Price plus VAT ex central warehouse Dr. Sonntag KG 97076 Würzburg Für eine individuelle, fachmännische Beratung setzten Sie sich einfach mit uns in Verbindung. Kontaktieren Sie uns einfach telefonisch oder per Mail. Wir helfen Ihnen gerne bei der Planung und Umsetzung Ihrer Projekte. Wir freuen uns darauf von Ihnen zu hören. Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik

Condition: used, Year of construction: 1998, Transnorm curved belt conveyor left 90°-800-600-IR600 RA2169 Make: Transnorm Pedpsq Awytsfx Abujrc Running direction: 90° left running belt conveyor width (RB): 600 mm Nominal/outer width (NB): 800 mm Nominal/outer width with Motor (MB): 1020 mm Inner radius (IR): 600 mm Height frame (BH): 200 mm Height frame with Motor (MH): 400 mm V 220/380, 0,37kW Conveying speed: contat us Optionally available: Supports Side guide one- and both sideds Frequency converter Prices net plus VAT from central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg For individual, expert advice, simply get in touch with us. Just contact us by phone or mail or visit our website We will be happy to help you plan and implement your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, Year of construction: 2008, Transnorm Rising falling Incline belt conveyor with leading belt GF 800+2800+650-700-600 RA2205 Technical data: Conveyor length (NL): 4250 mm ( 800 mm arch + 2800 mm riser segment + 650 mm leading ) frame width (NB): 700 mm, 800 mm with motor belt width (GuB): 600 mm Overall height (BH): 80 mm, 430 mm with motor Angle: freely adjustable between 0 and 15° Supporting feet: optionally available Conveying speed (v m/s): contact us Drive: SEW gear motor, R17DT71D4/BMG/TH Electrical data: 50Hz V380-500, kW 0,37 S1 Drive drum: Ø = 81 mm Belt return roller: Ø = 81 mm Optionally available: Supports Side guide on one side and on both sides Frequency converter for stepless speed change Adjust length (longer/shorter) Prices net plus VAT ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg, Germany Prsdpoq I Ty Rjfx Abujc For individual, professional advice, simply contact us. Simply contact us by phone or e-mail. We will be happy to help you with the planning and implementation of your projects. We look forward to hearing from you. With kind regards Your team at Dr. Sonntag GmbH & Co. KG Your specialist and contact for intralogistics

Condition: used, This listing is for 1 of 2 Mikura Autura 1000 Microplate Washer Psdsxzg Axepfx Abuorc The Mikura Autura 1000 is an automatic microplate washer designed to wash and fill 96-well and 384-well microplates (including deep well formats) for biochemical and immunological assays. It’s engineered for reliable, repeatable performance with high precision and adaptability for a range of workflows

Condition: new, Year of construction: 2025, functionality: fully functional, Aberlink's Horizon CNC Coordinate Measuring Machine (CMM) sets new standards in metrology by using frictionless linear drives that ensure fast, smooth and silent movements. This technology minimizes wear and increases reliability, which reduces maintenance. The granite base and Y-axis rail make the most of the thermal stability of this material to ensure precise measurements. The Horizon CMM is available in a range of sizes, with travels of X 800 mm, Y 1000 or 1600 mm and Z 600 mm, to suit different measurement requirements. Volumetric accuracy is (1.8 + L/350)µm with the TP20 probe, (1.7 + L/350)µm with the TP200 probe and (1.5 + L/350)µm with the SP25M scanner. The scale resolution is 0.1µm. Prsdpfx Aevwa Udebuoc Thanks to the user-friendly Aberlink 3D measurement software, the training time is minimal, so that precise measurements can be carried out even without prior knowledge. Free software updates ensure that the system is always up to date.

Condition: good (used), adjustable gear motor, variable speed gear motor, electric motor Predoc Nlynspfx Abusc -Engine power: 0.37 kW -Speed range: 190-1000 rpm -Motor: adjustable -Shaft diameter: Ø 14 mm -Design: B5 -Number: 1 motors available -Price: per piece -Dimensions: 410/187/H200 mm -Weight: 20 kg

Condition: good (used), Year of construction: 1987, Wood Lathe DHG 400/1000 Length: 1000 mm Motor power: 0.75 kW Voltage: 220 Volt 6 spindle speeds: 180/300/400/700/1400/2800 rpm Weight: 70 kg Podpfx Abew Hl Adoujrc Location: in stock at 54634 Bitburg - immediately available -

Condition: used, Year of construction: 1973, functionality: not functional, machine/vehicle number: 1709, SIP MUL-1000 universal length measuring machine with a comprehensive set of original SIP accessories. Manufacturer: SIP – Société Genevoise d’Instruments de Physique, Geneva/Switzerland Year of manufacture: 1973 Machine number: 1709 Measuring range: approx. 1,000 mm Prjdpfxszz Hq Ao Abusc The machine is offered expressly in its current condition, without any guarantee regarding functionality or accuracy. Oil was detected in the area of the scale/measuring system. A detailed fault diagnosis or repair has not been performed. Therefore, the machine is not sold as being in working order. Inspection and your own technical assessment on-site in Mönchengladbach are strongly recommended.

Condition: good (used), Year of construction: 2008, functionality: fully functional, Technical details cutting diameter 1000 mm saw band length 11100 mm cutting width 1100 mm total power requirement 20 kVA Prjdpfez Iy Dyjx Abuec weight of the machine ca. 14 t dimensions of the machine ca. 5,4 x 3,2 x 3,9 m Additional information Cutting capacity: Ø 1000 mm, W 1100 x H 1000 mm min. Ø 400 mm, W 400 x 100 mm Face parallelism monitoring: optical display in mm Motor power – band drive: 11.0 kW Hydraulics: 3.7 kW Coolant: 0.36 kW Cleaning brush: 0.09 kW Band speed: 15 – 120 m/min (infinitely variable) Tank capacity: 115 l (hydraulics) 250 l (coolant) Saw band dimensions: 80 x 1.6 x 11,100 mm Space requirements: W 5366 x H 3215 x D 3863 mm Table height: 820 mm Weight: 14,000 kg – no foundation required Color: Red/black