Used Biesse Akron 855 for sale (327)

Year of construction: 2018, condition: ready for operation (used), This 4-axis BIESSE Rover S FT 1536 was manufactured in 2018. It features a robust gantry design, a working area of 3765 × 1560 mm, and a main spindle power of 13.2 kW. Equipped with a HSK-F63 tool holder system, 12-position disc-type tool changer, and a BIESSE BH 10 drilling unit with comprehensive vertical and horizontal drilling capabilities. It also includes a grid vacuum table, dual 500 m³/h vacuum pumps, and is DXF file compatible. Contact us for more information about this machine. Iodpex D Iqvofx Agzoik Application Types CNC Wood Machining

Condition: used, Pressure gauge BIESSE 2424A0007, Ijdpfx Agslkchyszoik

Condition: like new (used), Year of construction: 2019, functionality: fully functional, New wide belt sanding machine for wood panels (including dust extraction) Iodoxxlz Uspfx Agzjik

Condition: used, Year of construction: 2020, total length: 6,050 mm, total height: 2,400 mm, total width: 1,750 mm, Weight: 5.000 kg Price: On request - Year: 2020 Iisdpfx Agjx Db Dpozok - Documentation available: Yes - CE marking present: Yes - CE certificate present: No - Serial number: 1000031582 - Main motor power [kW]: 18.0 - Software: Optiplanning - Easy version, SOPHIA services - Saw blade bore diameter [mm]: 65 - Min. saw blade diameter [mm]: 200 - Max. saw blade diameter [mm]: 350 - Max. cutting length [mm]: 3800 - Max. cutting width [mm]: 3800 - Number of feed clamps [pcs]: 6 - Feed speed: - └ Max. feed speed [m/min]: 25 - Voltage [V]: 400 - Current consumption [A]: 36 - Power [kW]: 18.0 - Transport dimensions: 6050mm x 1750mm x 2400mm (l x w x h) - Transport weight [kg]: 5000kg - Transport packages [pcs.]: 3 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Glenn Smeets

Condition: used, machine/vehicle number: 008277, X axis working area: 5680 mm Y axis working area: 1320 mm Iisdpfx Aex A Hgmsgzsk Working Table: Pod and Rail Main Electrospindle power: 12 KW Number of controlled axes: 4 axes Total number of drilling spindles: 21 Total number of tool changer positions: 24

Condition: excellent (used), Flexible N.C. automatic line for drilling, routing and inserting (hardware). Numerical control with Albatros software. Consisting of: KZ2046) Infeeder with hedgehog (buffer) store (18 positions) Iijdpfx Aoidmkrsgzsk KZ2047) Transfer with motorised conveyoring belt KZ2048) CNC Mod. Vector GLR-X 30-13 KZ2049) Transfer with motorised conveyoring belt KZ2050) CNC Mod. Vektor XK 40-13 KZ2051) Transfer with motorised conveyoring belt KZ2052) CNC Mod. Idrak 3 KZ2053) Transfer with motorised carpet with 90° inclination on a rollers table KZ2054) Rollers conveyor with also motorised belts (to move panels at 180° to the assembly lines)

Year of construction: 2007, condition: ready for operation (used), Main Drive Number of axis 5 Movement X-Axis Movement 4600 mm Z-Axis Movement 275 mm Y-Axis Movement 1935 mm This 5-axis Biesse Rover C9.50 was manufactured in 2007. It features a large working area (X=4600 mm, Y=1935 mm, Z=275 mm), an automatic lubrication system, and a control unit for 5-axis interpolation. The machine includes a vacuum system, a conveyor belt for chip removal, and a liquid cooling unit. If you are looking to get high-quality CNC machining capabilities, consider the Biesse Rover C9.50 machine we have for sale. Contact us for more information. Iiodpjx D H Hcjfx Agzjk Application Types CNC Wood Machining

Condition: excellent (used), Through-feed Drilling ELECTRONIC LINE (3 machines), CNC controlled, J06031) THROUGH-FEED MULTI-BORER “BIESSE” KERNEL CN - No. 2 horizontal units (each with 2 drilling heads at 11 spindles each, HP 2.3 each) - No. 6 bottom vertical units (each with 2 turnable drilling heads at various spindles, HP 2.3 ea) - No. 6 top vertical units (each with 2 turnable drilling heads at various spindles, HP 2.3 each) - No. 6 top pressing devices + No. 2 endless screws to evacuate the wastes. J06032) THROUGH-FEED MULTI-BORER “BIESSE” KERNEL CN - No. 2 horizontal units (each with 2 drilling heads at 11 spindles each, HP 2.3 each) - No. 6 bottom units (each with 2 turnable drilling heads at various spindles, HP 2.3 each) - No. 6 top vertical units (each with 2 turnable drilling heads at various spindles, HP 2.3 each) - No. 6 Top pressing devices + No. 2 endless screws to evacuate the wastes. J06033) THROUGH-FEED MULTI-BORER “BIESSE” KERNEL CN - No. 4 bottom units (each with 2 turnable drilling heads at various spindles, HP 2.3 each) - No. 4 Top pressing devices + No. 2 endless screws to evacuate the wastes. With CNC (software Tooling System + Woodmaster) The CNC controls the movement (X axe) of the mobile horizontal unit The CNC controls the vertical movement (Hv) of the 2 horizontal units The CNC controls the movement (X axe) of all the vertical units The CNC controls the movement (Y1 and Y2 axes) of the boring heads The CNC controls the movement (Y axe) of the stops Iedsg Urn Eepfx Agzeik The CNC controls the movement (X axe) of the pressure clamps The CNC controls the movement (X axe) of the conveyor belts

Condition: excellent (used), LOADER (SINGLE-CAGE) Vacuum system with its pump Top holding bar deplacement (pivoting) of 180° Iodpfx Aed Tywgsgzeik Horizontal-longitudinal bars (rocker arms) for the vacuum cups supporting In-side lifting table, surface with motorized-rollers Front-side sliding door (metal grid) to introduce the stack of the panels Separated electric and command panel Outside rollers way (on gound) to in-feed pile of panels to the Loader Out-side motorized rollers table (which in-feed the panels to the Unloader), with also cross motorized conveyor belts (at 90°), Working capacity (cycles/min): 12-15 Min/Max panels thickness mm 10 - 40 Min dimensions of the panels mm 250 x 320 (estimated) Max dimensions of the panels mm 1200 x 3000 Total installed motor power KW 11

Condition: excellent (used), Numerical Control Type NC 400 (Software) Through-feed motorized conveyoring belts (No.) 2 No. 2 Horizontal units/supports Drilling heads for each horizontal unit (N°) 2 Iijdpfjgk T Ttox Agzjk Splindles for each horizontal drilling head (N°) 11 Max. working width (mm) 3200 - Min. working width (mm) 205 (ca.) No. 6 Bottom vertical units/supports Drilling heads/blocks for each bottom vertical unit (N°) 2 No. 4 Top vertical units/supports Drilling heads/block for each top vertical unit (N°) 2 Vertical top pressure clamps (N°) 5 Motorized endless screws to evacuate wastes/chips (N°) 2 Digital quota (axes) display Total installed power (Kw) 48 The CNC controls the movement (X axe) of the mobile horizontal unit The CNC controls the movement (Y axe) of the stops

Condition: excellent (used), CNC Flexible Automatic through-feed ROUTERING, DRILLING and DOWELS INSERTING LINE Min/Max workpieces (panels) width (X axis) with FTT: mm 240 / 3100 Min/Max workpieces (panels) thickness (Z axis) with FTT: mm 12 / 60 Min/Max workpieces (panels) length-depth (Y axis) with FTT: mm 140 /1550 (or 800+800) A) Loader (Bridge Frame) "RBO" Double Station, Mod. Advantage C B) Motorized Roller table "RBO" with turning device 90° (length to crosswise) C) Gantry (Portal) CNC (Routering and Drilling) machine "BIESSE" FTT 800 Centre A: No. 2 Electro-spindles ISO 30 (Kw 3,7 each) with tool-holder magazine with 3 places each. Centre B: No. 2 predispositions for the installation of other 2 electro-spindles No. 2 tool-holder magazines (revolver) with 56 positions each. No. 4 upper drilling units (total 128 vertical spindles + 36 horizontal spindles) D) Connection transfer, with upsidedown turning machine (180°) "RBO" Mod. Ribaltatore E) Gantry (Portal) CNC (Routering and Drilling) machine "BIESSE" Mod. FTT 800 R8 No.2 horizontal units(1 left+1 right)with 4 BH18 heads with 18 spindles(36 right + 36 left),total 72 Centre A: No. 2 Electro-spindles ISO 30 (Kw 4,5 each) with 3 tool-holder magazine each. Centre B: No. 2 predispositions to install another 2 electro-spindles No. 2 tool-holder magazines (chain) with 60 positions each. No. 4 upper drilling units (total 128 vertical spindles + 36 horizontal spindles) Iijdpfx Asgvdkgsgzok F) "BIESSE" RD dowel insertion unit No.2 horizontal units(1 right+1 left)with 5 insertion nozzles each (5 left + 5 right), tot. 10 nozzles G) Stacker (Bridge Frame) "RBO" Double Station, Mod. Advantage SC

Condition: excellent (used), UNLOADER (SINGLE-CAGE) - Vacuum system with its pump - Top holding bar deplacement (pivoting) of 180° - Horizontal-longitudinal bars (rocker arms) for the vacuum cups supporting - In-side lifting table, surface with motorized-rollers - Front-side sliding door (or metal grid) to out-feed the stack of the panels Iijdpfod Tyvxsx Agzek - Separated electric and command panel - Out-side rollers way (on ground) to out-feed pile of panels from the Unloader - Out-side motorized rollers table (which brings panels to the Unloader), with also cross motorized conveyor belts (at 90°) - Working capacity (cycles/min): 12-15 - Min/Max panels thickness mm 10 - 40 - Min dimensions of the panels mm 250 x 320 (estimated) - Max dimensions of the panels mm 1200 x 3000 - Total installed motor power KW 11

Condition: excellent (used), Electronic programmer RT 483 No. 2 Through- feed motorized conveyoring belts Feeding speed (55 m/min ca.) No. 2 Horizontal units/supports No. 1 Drilling heads for each horizontal unit/support (1 x HP 1,5) No. 20 Spindles for each horizontal drilling head Max. working width (mm) 3200 Min. working width (mm) 220 No. 7 Bottom vertical units/supports No. 2 Drilling heads/blocks for each bottom vertical unit (2 x HP 1,8) No. 4 Top vertical units/supports No. 2 Drilling heads/blocks for each bottom vertical unit (2 x HP 1,8) No. 4 Vertical top pressure clamps No. 2 Motorized endless screws to evacuate wastes/chips Iisdefz Nanepfx Agzok Quota (axes) digital display Total power installed (Kw) 35,1 The CNC controls the movement (X axe) of the mobile horizontal unit The CNC controls the movement (Y axe) of the stops

Condition: excellent (used), Double-side working machine, which can be placed in line after a through-feed Multi Borer for the automatic processing cycle of boring and dowels inserting Electronic Programmer RT 486 Through-feed motorized conveyoring belts (No.) 2 Horizontal units/supports (No.) 2 Dowels inserting nozzles (and Glue Injectors) No. 6 Left-side + No. 6 Right-side Iiodpfx Agsdi R R Rjzek Max. working width (mm) 3200 Min. working width (mm) 205 (ca.) Bottom vertical units/supports (N°) 4 Drilling heads/blocks for each bottom vertical unit (N°) 2 x HP 1,8 Vertical top pressure clamps (N°) 2 Total installed power (Kw) 11,5

Condition: excellent (used), LOADER (BRIDGE-FRAME) WITH DOUBLE PICK-UP STATION Vacuum system (with its pump) No. 2 Vertical supporting columns of the top supporting beams No. 2 Horizontal top supporting beams (where the carriage slide on) No. 1 Motorized sliding carriage with horizontal metal arms No. 2 Horizontal metal arms with vacuum cups, adjustables OPTIONAL No. 2 Out-side rollers ways (on gound) to in-feed pile of panels to the Loader No. 1 Motorized rollers table (which receives panels from the Loader) Separate electric and command panel Electronic Programmer Perimetral safety metal grids Total installed motor power Kw 17,7 Isdpeflc T Sofx Agzeik Working capacity (cycles/min) 16-20 (ca.) Min/Max panels thickness mm 10-50 (ca.) Min dimensions of the panels mm 250 x 320 (ca.) Max dimensions of the panels mm 1200 x 3000 (ca.)

Condition: excellent (used), UNLOADER (BRIDGE-FRAME) WITH DOUBLE STORAGE STATION Vacuum system (with its pump) N. 2 Vertical supporting columns of the top supporting beam N. 1 Horizontal top supporting beam (where the carriage slide on) N. 1 Motorized sliding carriage with horizontal metal arms N. 2 Horizontal metal arm with vacuum cups, adjustables N. 2 Out-side rollers way (on gound) to out-feed pile of panels from the Unloader N. 1 Out-side motorized rollers table (which brings panels to the Unloader), with also cross motorized conveyor belts (at 90°). Dimensions mm 7168 (ca.) Separate electric and command panel Electronic Programmer OMRON Perimetral safety metal grids Iijdpfx Asd Rg Dzsgzok Working capacity (cycles/min) 16 - 20 (ca.) Min/Max panels thickness mm 10 - 50 (ca.) Min dimensions of the panels mm 250 x 320 (ca.) Max dimensions of the panels mm 1200 x 3200 (ca.) Total installed motor power Kw 20.8

Condition: excellent (used), UNLOADER (SINGLE-CAGE) - Vacuum system with its pump - Top holding bar deplacement (pivoting) of 180° Iisdjcggy Sspfx Agzjk - Horizontal-longitudinal bars (rocker arms) for the vacuum cups supporting - In-side lifting table, surface with motorized-rollers - Front-side sliding door (or metal grid) to out-feed the stack of the panels - Separated electric and command panel - Out-side rollers way (on ground) to out-feed pile of panels from the Unloader - Out-side motorized rollers table (which brings panels to the Unloader), with also cross motorized conveyor belts (at 90°) - Working capacity (cycles/min): 12-15 - Min/Max panels thickness mm 10 - 40 - Min dimensions of the panels mm 250 x 320 (estimated) - Max dimensions of the panels mm 1200 x 3000 - Total installed motor power KW 10

Condition: excellent (used), LOADER (BRIDGE-FRAME) WITH DOUBLE PICK-UP STATION Ijdpfx Ajd Rg Dpogzoik Vacuum system (with its pump) N. 4 Vertical supporting columns of the top supporting beam N. 1 Horizontal top supporting beam (where the carriage slide on) N. 1 Motorized sliding carriage with horizontal metal arms N. 2 Horizontal metal arms with vacuum cups, adjustables N. 2 Out-side rollers ways (on gound) to in-feed pile of panels to the Loader N. 1 Out-side motorized rollers table (which in-feed the panels to the Unloader), with also cross motorized conveyor belts (at 90°), dimensions mm 7232 (ca.) Separate electric and command panel Electronic Programmer OMRON Perimetral safety metal grids Working capacity (cycles/min) 16 - 20 (ca.) Min/Max panels thickness mm 10 - 50 (ca.) Min dimensions of the panels mm 250 x 320 (ca.) Max dimensions of the panels mm 1200 x 3200 (ca.) Total installed motor power Kw 23.3

Condition: excellent (used), Automatic ELECTRONIC Drilling and Dowels inserting LINE, CNC controlled: VZ0250A) LOADING SYSTEM “RBO” Tornado C 1300 with motorized rollers table and conveyoring belts to in-feed the 1st multi-borer VZ0250B) THROUGH-FEED MULTI-BORER “BIESSE” Techno FDT with CNC - No. 2 through-feed motorised belts, feeding speed up to 75 m/min - No. 2 horizontal units (each with 2 drilling heads at 11 spindles each, HP 1.8 each), - No. 4 bottom vertical units (each with 2 turnable drilling heads at various spindles, HP 1.8 ea) - No. 3 top vertical units (each with 2 turnable drilling heads at various spindles, HP 1.8 each) - No. 3 top pressing devices Iijdpsd Nviqefx Agzek - No. 2 endless screws to evacuate the wastes. With CNC NC 500 to control, manage and run the 2 machines of this line VZ0250C) THROUGH-FEED MULTI-BORER & DOWELS INSERTER “BIESSE” Techno SDT with CNC - No. 2 through-feed motorised belts, feeding speed up to 75 m/min - No. 2 horizontal units (each with 6 inserting nozzles, such as Glue injectors and dowel drivers) - No. 2 bottom units (each with 2 turnable drilling heads at various spindles, HP 1.8 each) - No. 2 Top pressing devices - No. 2 endless screws to evacuate the wastes. VZ0250D) BRUSHING-CLEANING MACHINE "PIZZIGALLI" Mod. GP 11 VZ0250E) UNLOADING “RBO” Tornado SC/FE 1300 with motorized rollers table and conveyoring belts out-feed from 2nd multi borer (and dowels inserter)

Condition: used, Complete factory for the production of furniture cabinets, composed by: SZ0M23) Angular Panel Saw "GIBEN" Tip 17 (mm 5600x2700) with "SIRIO" automatic unloading and stacking system SZ0M25) Panel Saw “GIBEN” Mod. GammaDue (mm 3800x2200) SZ0M26) Panel Saw (Multi-saws) “GABBIANI” (finished panels mm 4250x2120) SZ0M27) Laminating Line “BARBERAN” for melamine papers (glue on paper) SZ0M29) Pressing Line “COLOMBO REMO” (mm 1400 x 9600) for paper / veneer / laminates SZ0M30) Pressing Line “FRIZ” (mm 1400 x 6200) for paper / veneer / laminates SZ0M41) 4-sides Sizing & Edge Banding Line “IMA” Combima fast handling “RBO-BIESSE” SZ0M42) 4-sides Sizing & Edge Banding Line “IMA” Combima softforming with a second double side Sizing & banding machine STEFANI and automatic handling equipment “TOMASSINI” Iodpjcr U Ursfx Agzsik SZ0M39-40) Edge Banding Line (single side) for narrow pieces “HOMAG” Mod. KAL 310 with Splitter "NARDELLO" Mod. Elegance SZ0M35-36) Multi-Borer “BIESSE” Techno Logic with Loader + Unloader “TOMASSINI” SZ0M45) CNC Multi Boring and Dowels Inserting Line “BIESSE” Techno FDT with fast handling “RBO-BIESSE” SZ0M37) CNC Working Center “MORBIDELLI” Mod. Author 600 KL SZ0M56) Reel Cutting and winding machine “CEFLA-DUSPOHL” Tipo RSW 2200 T SZ0M01) Wooden strips end-cutting Line "OGAM+SALVADOR" SZ0M07) Wooden strips end-cutting and stacking Line “SALVADOR+SACOT” SZ0M08) Wooden strips end-cutting and stacking Line “SALVADOR+CMA” SZ0M11-17) Preparing Line for honey-comb panels SZ0M18) No. 6 Mutli-openings (daylights) hot hydraulic presses "COLOMBO REMO" SZ0M21) Sizing and top & bottom Calibrating line for honey-comb panels "GABBIANI + CELASCHI + ELMAG + COSTA Sanding Machines" And many other machines (i.e. multi-borer "VITAP", circular saws, glue spreaders, etc.), saw-dust suction system, rollers ways, shelvings, fork-lift, transpallets, etc. Machines still installed at the end-user's factory. They can be inspected by appointment.

Condition: excellent (used), Numerical Control Type NC 400 Deluxe Through-feed motorized conveyoring belts (No.) 2 No. 2 Horizontal units/supports Drilling heads for each horizontal unit (N°) 1 Splindles for each horizontal drilling head (N°) 20 Max. working width (mm) 3200 Min. working width (mm) 205 (ca.) No. 5 Bottom vertical units/supports Drilling heads/blocks for each bottom vertical unit (N°) 2 Vertical top pressure clamps (N°) 3 Transport belts to evacute chips (wastes) (N°) 2 Iisdpfx Agerm Ik Tszek Total installed power (Kw) The CNC controls the movement (X axe) of the mobile horizontal unit The CNC controls the movement (Y axe) of the stops The CNC controls the movement (X axe) of the conveyor belts

Condition: excellent (used), Universal DOUBLE-SIDE SIZING & EDGE BANDING MACHINE (for both 1st and 2nd pass) Edges (tape) thickness in rolls (min/max) mm 0,3 - 3 Panels thickness (min/max) mm 10 - 60 Working width (min/max) mm 240 - 2700 Numerical Control /Software SINITRA Adjustable feeding speed (m/min ) 10 - 40 (INVERTER C.N.) Safety and sound-proof enclosures/cabins Distance (center-axes) of the Disappearing Dogs (mm) 500 SIZING PART (for each side): Anti-chipping Milling Unit AS 10 (Kw 5,8) N° 2 Hogging Units (1 Top + 1 Bottom) DT 10 (5,8 + 5,8) - Spraying unit (Anti-sticking liquid) EDGE-BANDING PART (for each side): Glueing Unit (Hot Melt + Quick Melt Unit) SP30 (High Melt + Edge Guide Z-axe) Band Pressure zone (N.C. adjustment) . Edge coils supporting unit (No. 6 reels) Snipping (end-cutting) unit IT 90-S (Kw 0,3 x 2) speed 28m/min. 0 - 25°. PNEU Fine Trimming unit (Multi-profile, by N.C.) RF 30 (Kw 0,65 x 2) 0 - 25° Multi Function Unit (Profile contour Trimming unit) AR 80 (Kw 0,3 x 2) max 25 m/min - ROTAX motors with automatic tool change (8+8 position store) Profile Scraping unit (Multi-profile, by N.C.) RB 30 Glue scraping unit RC 20 + Spraying Unit (for polishing liquid) Isdju Tg Uqjpfx Agzoik Buffing unit SZ 30 (Kw 0,37 x 2) With ‘hopper’ for panels (useful height mm 80), as a buffer, to speed up the work cycle

Condition: excellent (used), Splitting - Grooving Machine (used to groove and/or split in two parts the unique panel): - Minimum length of the workpiece: mm 500 - Maximum length of the workpiece: mm 2700 - Minimum width of the workpiece: mm 300 ca. - Maximum width of the workpiece: mm 700 - Thickness (min./max) of the workpiece: mm 10 / 30 ca. Iiodju Tqb Uopfx Agzsk - Max feeding speed: m/min 50 - Total installed power Kw 43.2 Along with the following groups: POS. 1 Milling unit for execution of bottom slots/grooves (Kw 7,4) max. blade diameter mm 300 POS. 2 Lower scoring blade unit (Kw 7.4) max. blade diameter mm 350 POS. 3 Upper scoring blade unit (Kw 7.4) max. blade diameter mm 350 POS. 4 Lower main blade (sawing) unit (Kw 7.4) max. diameter mm 350

Condition: excellent (used), Automatic ELECTRONIC Drilling and Dowels inserting LINE, CNC controlled: O03009A) THROUGH-FEED MULTI-BORER “BIESSE” Techno Logic with CNC No. 2 through-feed motorised belts, feeding speed up to 75 m/min No. 2 horizontal units (each with 2 drilling heads at 11 spindles each, HP 1.8 each), No. 5 bottom vertical units (each with 2 turnable drilling heads at various spindles, HP 1.8 ea) Iijdpfx Aew Uhbkogzek No. 3 top vertical units (each with 2 turnable drilling heads at various spindles, HP 1.8 each) No. 5 top pressing devices No. 2 endless screws to evacuate the wastes. Numerical Control Type CNI O03009B) THROUGH-FEED MULTI-BORER & DOWELS INSERTER “BIESSE” Techno INFOR a C.N. No. 2 through-feed motorised belts, feeding speed up to 75 m/min No. 2 horizontal units (each with 6 inserting nozzles, such as Glue injectors and dowel drivers) No. 2 bottom units (each with 2 turnable drilling heads at various spindles, HP 1.8 each) No. 2 Top pressing devices No. 2 endless screws to evacuate the wastes.

Condition: excellent (used), Electronic programmer NC 400 Through-feed motorized conveyoring belts (No.) 2 Horizontal units/supports (No.) 2 Drilling heads for each horizontal unit (N°) 2 Splindles for each horizontal drilling head (N°) 11 Iisdelwqrtopfx Agzjk Max. working width (mm) 3200 - Min. working width (mm) 205 (ca.) Bottom vertical units/supports (No.) 6 Drilling heads/blocks for each bottom vertical unit (N°) 2 Vertical top pressure clamps (N°) 4 Motorized endless screws to evacuate wastes/chips (N°) 2 Digital quota (axes) display Total installed power (Kw) 27.7 The CNC controls the movement (X axe) of the mobile horizontal unit The CNC controls the movement (Y axe) of the stops The CNC controls the movement (Z axe) of all the vertical units