Weinig Dimter Opticut 200 Classic nakup rabljenega (17.554)

Stanje: rabljeno, Used control cabinet from a Weinig Unicontrol 10, suitable for spare parts or for building a new control cabinet. Nledpfx Ahorrk I Hs Usb Contents include, among others: - Siemens Simatic S5 - Siemens EMG 45

Stanje: rabljeno, Motor: 0.5 kW Nledpoq Scahjfx Ah Ujb

Stanje: rabljeno, - d1 = 35 mm, - d2 = 27 mm (across flats), - overall length: 195 mm. Nedpfx Ahslkclke Uolb

Stanje: rabljeno, d1: 35 mm d2: 27 mm (wrench size) Overall length: 115 mm - Available: 2 pcs, Nedpfxolkclgs Ah Ujlb Price per piece: €25.00 + VAT

Stanje: rabljeno, Motor 0,18 kW Dolžina traku 4.500 mm Nedslf I I Espfx Ah Uslb Širina traku 120 mm Vhodni, izhodni ali povezovalni transportni trak Weinig LTB 120/4500

Stanje: rabljeno, Leto izdelave: 1997, Beam planer 260 x 160 mm, trailing chamfering unit on the upper spindle, air cushion table with two-axis control for the left and upper spindle, brand new control system (latest Weinig version). Maximum working width: 260 mm Maximum working height: 160 mm Number of spindles: 6 units Nlsdjwwwkhepfx Ah Ujb 1st spindle: bottom, spindle diameter 40 mm, clamping length 270 mm, speed 6000 rpm, motor power 11.0 kW 2nd spindle: right, spindle diameter 40 mm, clamping length 170 mm, speed 6000 rpm, motor power 11.0 kW, shared motor with left spindle 3rd spindle: left, spindle diameter 40 mm, clamping length 170 mm, speed 6000 rpm 4th spindle: top, spindle diameter 40 mm, clamping length 270 mm, speed 6000 rpm, motor power 11.0 kW 5th spindle: bottom, spindle diameter 40 mm, motor power 11.0 kW, speed 6000 rpm, clamping length 270 mm 6th spindle: top, chamfering unit Motor brakes: mechanical Height adjustment of upper spindle: electric Optional with/without feed Feed brake system: Yes Feed speed steplessly adjustable: 3 - 23 m/min Feed roller pressure: pneumatic Feed power: 4.0 kW Feed drive: cardan Lubrication pump: manual Max. cutting depth jointing: 10 mm Jointing rebate cutter on jointer: Yes Driven rollers in table: 1 unit Control type: PLC control Spindle position indicator: mechanical numeric display Infeed rollers before jointer: Yes Air cushion table: triple track Central lubrication point: Yes Description: short infeed table 1050 mm with internal lighting Location: Nattheim

Stanje: rabljeno, Leto izdelave: 2001, Number of spindles: 8 pcs. Working width: 230 mm Planing height: 160 mm Feed motor: 5.5 kW Feed speed: 36 m/min Control system: Logocom Planing and profiling machine Weinig Unimat 3000 Brillant. Computer-controlled ProfiCenter for planing and profiling operations with CNC-controlled spindles and Weinig EM11 feed magazine. The control panel was updated in 2021 with the current Simatic Panel PC677C-15”. Sale is conducted on behalf of the customer from the current location. Inspection is possible at any time by appointment. Spindle 1: bottom / HSK Powerlock / 12,000 rpm Spindle 2: right / HSK Powerlock / 4,000 – 12,000 rpm Nedey Ty H Djpfx Ah Uolb Spindle 3: left / HSK Powerlock / 4,000 – 12,000 rpm Spindle 4: right / HSK Powerlock / 4,000 – 12,000 rpm Spindle 5: top / HSK Powerlock / 4,000 – 12,000 rpm Spindle 6: bottom / HSK Powerlock / 4,000 – 12,000 rpm Spindle 7: top / HSK Powerlock / 4,000 – 12,000 rpm Spindle 8: bottom / HSK Powerlock / 4,000 – 12,000 rpm All spindles: CNC-controlled (except spindles 6 & 8)

Stanje: zelo dobro (rabljeno), Funkcionalnost: popolnoma funkcionalen, Štiristranski skobeljni stroj Weinig Profimat 23 ATS Delovna širina: 230 mm Delovna višina: 120 mm Število vreten: 4 Nodey Rr Uzopfx Ah Ujlb Razporeditev vreten: Spodaj 11 kW Desno Levo 11 kW Zgoraj 11 kW Pnevmatski pritiski materiala Nastavljiva hitrost podajanja: 5–22 m/min Dolžina vhodne mize: 2470 mm Motor podajanja: 4 kW CE certifikat Premer odsesovalnih priključkov: 4x140 mm

Stanje: rabljeno, Število vreten: 6 kosov Delovna širina: 230 mm Višina oblanja: 120 mm Stroj za oblanje in profiliranje Weinig tip Unimat 500 za štiristransko oblanje in profiliranje lesa. Stroj ima spominski sistem z elektronskim pozicioniranjem (aksialno in radialno) vreten 2-5. Nsdpfsya Hh Tox Ah Uolb Z ojačanim ležiščem, kompaktno kabino ter v zelo dobrem originalnem stanju. Vključuje: - Brusilni stroj za rezila kot Rondamat 931 - Centrolock glave za oblanje - Glave za profilne nože - Rezervna rezila - Obsežna dodatna oprema. Vreteno 1: Spodaj / 40 mm Vreteno 2: Desno / 7,5 kW / 40 mm Vreteno 3: Levo / skupni motor z desnim / 40 mm Vreteno 4: Zgoraj / 7,5 kW / 40 mm Vreteno 5: Spodaj / 40 mm Krmiljenje: Spominski sistem

Stanje: dober (rabljeno), Leto izdelave: 1995, številka stroja/vozila: 25512, Funkcionalnost: popolnoma funkcionalen, moč: 30 kW (40,79 KM), največja višina reza: 105 mm, največja širina rezanja: 310 mm, premer žaginega lista: 350 mm, največja hitrost vrtenja: 4.200 obr/min, skupna masa: 2.200 kg, Oprema: dokumentacija / priročnik, Raiman KS 310 popolnoma delujoč Nedpfx Asy Dug Toh Uslb

Stanje: dober (rabljeno), Weinig Em 11 Nodpfx Ahoy Tt I Ij Uelb

Stanje: dober (rabljeno), Funkcionalnost: popolnoma funkcionalen, Dovajalna naprava Weinig EM-4 Nsdpsullxgjfx Ah Ujlb

Stanje: pripravljen za uporabo (rabljen), Leto izdelave: 1983, Funkcionalnost: popolnoma funkcionalen, delovna širina: 220 mm, višina skobljanja: 140 mm, premer vretena: 50 mm, širina skobljanja: 220 mm, delovna višina: 140 mm, moč pogonskega motorja podajalnika: 15.000 W, največja hitrost vretena: 6.000 obr/min, hitrost vretena (min.): 6.000 obr/min, vrsta nastavitve višine: električni, vrsta vhodnega toka: trifazni, število vreten: 7, vhodna frekvenca: 50 Hz, Weinig Hydromat 22 BL 7 spindles, Working width: 220 mm, Working height: 140 mm, Nljdpeulnr Asfx Ah Ujb Spindle diameter: 50 mm, Feed: 15 kW / 6 – 60 m/min, Beesjj3Vck9 Spindle arrangement: 1-Bottom (7.5 kW) with hydraulic clamping 2-Right (11 kW) 3-Left (11 kW) 4-Top (11 kW) 5-Bottom (7.5 kW) with hydraulic clamping, straight jointer and profile jointer 6-Top (11 kW) with hydraulic clamping, straight jointer 7-Bottom (11 kW) with hydraulic clamping, straight jointer and profile jointer 6 powered feed rollers in the table

Stanje: rabljeno, Leto izdelave: 2013, Number of spindles: 5 units Working width: 20 - 230 mm Planing height: 8 - 120 mm Infeed table length: 2500 mm Feed motor: 1.1 kW Feed speed, infinitely variable: 2–12 m/min Machine weight: approx. 2500 kg 1 WEINIG Planing and Profiling Machine VARIOMAT Short summary: ----- - 5 spindles - powerful motors - cycle-controlled jointing - MemoryPlus control unit - Option: Stähle-Hess Saturn single piece wood sanding machine Technical Manufacturer's Description: ----- Working width: 20–230 mm Working height: 8–120 mm 1st spindle horizontal lower Nlodpfx Ahoy Spvfs Uob ----- Motor with brake: 7.5 kW Diameter: 40 mm Speed: 6000 rpm Tool cutting circle: 125–145 mm Axial adjustment: 5 mm Rabbetting device incl. rabbet cutter 2nd spindle vertical right ----- Motor with brake: 11.0 kW Diameter: 40 mm Speed: 6000 rpm Tool cutting circle: 93–232 mm Minimum tool diameter at fence level: 93 mm Maximum tool diameter behind fence level: 180 mm Maximum profiling depth: 45 mm Axial adjustment: 30 mm Insert segment, incl. additional stop lip 125 mm Insert segment, incl. additional stop lip 150 mm 3rd spindle vertical left ----- Shared motor with 1st right spindle Diameter: 40 mm Shared speed with right spindle Tool cutting circle: 93–232 mm Maximum profiling depth: 45 mm Minimum profiling depth with tool circle 200 mm: 20 mm Axial adjustment below table: 30 mm Insert segment 125 mm Insert segment 150 mm 4th spindle horizontal upper ----- Motor with brake: 11.0 kW Diameter: 40 mm Speed: 6000 rpm Tool cutting circle: 125–200 mm Maximum profiling depth: 30 mm Minimum profiling depth with tool circle up to 200 mm: 20 mm Axial adjustment: 30 mm 5th spindle horizontal lower ----- Motor with brake: 11.0 kW Diameter: 40 mm Speed: 6000 rpm Tool cutting circle: 125–200 mm Maximum profiling depth: 15 mm Axial adjustment: 10 mm Table plates for wood inserts on lower spindle Additional discharge plate above the lower spindle for wood insertion Feed system ----- Frequency-controlled feed 1.1 kW, infinitely variable 2–12 m/min Double pendulum opposite left spindle Adjustment path of feed rollers opposite left spindle, axial 35 mm Durofer spiked feed rollers Pneumatic pressure for feed rollers incl. water separator Cycle-controlled jointing to support manual jointing. The infeed roller is released after the second feed roller has engaged the workpiece. After the workpiece leaves the second feed roller, the infeed roller returns to the start position for the next workpiece. Further features: ----- MemorPLUS control Width and height controlled (spindles 3 and 4 radially CNC-axis controlled) ----- Price of the above machine on request! ----- OPTION at extra cost Stähle-Hess Saturn #7008: Machine was used in conjunction with Stähle-Hess Saturn Duo single piece wood sanding machine, stock no. #7008 (Technical data according to manufacturer – no guarantee!)

Stanje: rabljeno, Number of spindles: 5 pcs Working width: 230 mm Planing height: 120 mm Planer table length: 2500 mm Feed motor: 4 kW Feed speed: 5-30 m/min Control: Memory function Weinig Powermat 500 with grooving table ----- Machine will arrive in stock, cleaned, and fully inspected. Short summary: ----- - 5 spindles - 8,000 rpm - Grooving guide for short or difficult-to-guide workpieces, coated with Marathon PowerCoating - One driven roller on the outfeed table, hardened: 210 mm wide - Left and top spindle electronically controlled for width and height - Quick-release spindle nut Detailed description: ----- Technical data: Working width: 20-230 mm Working height: 8-120 mm Number of spindles: 5 1st spindle – bottom ----- Motor with brake: 7.5 kW Spindle diameter: 40 mm Speed: 8,000 rpm Tool diameter: 125 - 180 mm Tool diameter rebate cutter: 130 - 160 mm Axial adjustment: 17 mm Rebate attachment MarathonCoating on table insert before 1st bottom tool holder 2nd spindle – right ----- Motor with brake: 5.5 kW Spindle diameter: 40 mm Speed: 8,000 rpm Tool diameter: 93 - 200 mm Max. profiling depth: 35 mm Axial adjustment: 80 mm Radial adjustment: — Min. tool diameter at fence level: 93 mm Max. tool diameter behind fence level: 200 mm 3rd spindle – left ----- Motor with brake: 7.5 kW Spindle diameter: 40 mm Speed: 8,000 rpm Tool diameter: 93 - 200 mm Tool diameter for straight knife heads max.: 163 mm Max. profiling depth: 35 mm Axial adjustment: 55 mm Pressure shoe before left spindle, including 2 spring-loaded lateral pressure rollers Spindle radial CNC-controlled 4th spindle – top ----- Motor with brake: 11.0 kW Spindle diameter: 40 mm Speed: 8,000 rpm Tool diameter: 93 - 200 mm Tool diameter for straight knife heads max.: 180 mm Max. profiling depth: 35 mm Axial adjustment: 40 mm Spindle radial CNC-controlled Split pressure shoe in front of top tool holder, adjustable to tool diameter and can be swung away from the tool, spring-loaded 5th spindle – bottom ----- Motor with brake: 5.5 kW Spindle diameter: 40 mm Speed: 8,000 rpm Tool diameter: 93 - 225 mm Max. profiling depth: 15 mm Nledpfxsy Spu Ue Ah Usb Axial adjustment: 35 mm Radial adjustment: — Min. tool diameter at table level: 93 mm Max. tool diameter 6 mm below table level: 225 mm Feed system ----- Frequency-controlled feed, infinitely variable with brake: 4 kW, 5 - 30 m/min Infeed roller before 1st bottom tool pneumatically controlled up/down Durofer pointed tooth rollers with depth limiter and self-cleaning Axial adjustment of feed rollers relative to left tool holder, 35 mm Reduced roller spacing relative to right tool Machine electrics ----- Operating voltage: 400 V (voltage range 380 - 420 volt), 50 Hz Machine base, tables and fences ----- Planer table: 2500 mm long (including straightening rule)...

Stanje: rabljeno, Použitý stroj Rok výroby: 2004 Vybavení a technické údaje: - Provozní hodiny: 5000 - Šířka hoblování: 230 mm - Výška hoblování: 120 mm - Počet vřeten: 6 - Spodní vřetena: 2 - Pravé vřeteno: 1 - Levé vřeteno: 1 - Horní vřetena: 2 - Usazení vřeten: dole / vpravo / vlevo / nahoře / nahoře / dole - Výkon motorů v kW: 11 / 7,5 / 7,5 / 11 / 11 / 11 Nedpfx Ahoyxyauj Ujlb - Max. otáčky vřetena: 6800 ot/min - Průměr vřetene: 40 mm - Posuv: max. 30 m/min - Posuv: plynule regulovatelný - Posuv motor: 4 kW - Hlavní motor: 11 kW - Předhoblovací fréza - Povrch stolu stroje: pochromovaný - Délka vstupního stolu: 2000 mm - Poháněné stolní válce - Mazací čerpadlo: manuální - Horní přítlak: pneumatický - Pohon: posuvové válce kardanovým hřídelem - Celkový příkon: 80 kW - Rozměry: 4100 x 2050 x 1900 mm Stroj je nabízen bez nástrojů; použité nástroje mohou být také zajištěny na požádání. Dostupnost: cca polovina/konec dubna Místo: Nizozemsko

Stanje: nepreverjeno (rabljeno), Funkcionalnost: nepreverjeno, delovna širina: 260 mm, višina skobljanja: 170 mm, premer vretena: 40 mm, širina skobljanja: 260 mm, delovna višina: 170 mm, moč pogonskega motorja podajalnika: 4.000 W, največja hitrost vretena: 6.000 obr/min, hitrost vretena (min.): 6.000 obr/min, Oprema: kabina, motorna zavora, Weinig Profimat 23 E Delovna širina: 260 mm, Delovna višina: 170 mm, Nsdpfxsy S E Spj Ah Uolb 5 vreten, Premer vretena: 40 mm, Razporeditev vreten: 1- Spodaj - 5,5 kW 2- Desno + 3- Levo - 11 kW 4- Zgoraj - 5,5 kW 5- Spodaj - 11 kW Pomik: 6 – 24 m/min - 4 kW Zračni jastuk v mizi En pogonski valj v mizi pri izhodu. Z orodjem.

Stanje: zelo dobro (rabljeno), WEINIG HYDROMAT 22 AL Four-Sided Planer - Maximum working width: 220 mm - Maximum working height: 130 mm - 8 spindles: 1) Bottom horizontal 220 mm, 5.5 kW 2) Right vertical 130 mm, 7.5 kW 3) Left vertical 130 mm, 7.5 kW 4) Right vertical 130 mm, 5.5 kW 5) Top horizontal 220 mm, 11 kW – Spindle 5 electrically adjustable, up/down 6) Bottom horizontal 220 mm, 5.5 kW 7) Bottom horizontal 220 mm, 5.5 kW – Spindle 7 with support + Jointer system (cutterhead sharpening) 8) Universal 220 mm, 360° adjustable, 7.5 kW - All spindles adjustable up/down, right/left - Spindle diameter: 40 mm Feed system (top): - 6 infeed dual-gear powered rollers + 1 single - 3 dual smooth rubber outfeed rollers + 3 singles - Meter counter Feed system (bottom): - 1 powered, geared, swiveling infeed roller integrated in the lower table - 3 metal smooth driven rollers - Cardan shaft roller feed - Pneumatic roller pressure system Nedpfx Ajy Ux Dqoh Uolb - Stepless feed speed adjustment + 2-speed gearbox: 10–60 m/min - Feed motor: 10 kW - Electric thickness adjustment - Raising/lowering motor: 0.75 kW - Central table lubrication - Extraction outlets: 5×140 mm, 3×120 mm - Machine dimensions (LxWxH): 4680×1780×1850 mm - Control cabinet dimensions (on pallet): 1020×1000×2230 mm - Weight: approx. 5000 kg Infeed Conveyor with Centering Device: - Roller width: 450 mm - Infeed: 1 geared powered roller - 22 smooth driven rollers - Adjustable top pressure - Conveyor length: 9020 mm - Stepless speed adjustment: 10–60 m/min - Motor: 0.75 kW - Dimensions (LxWxH): 9020×790×1150 mm Net price: 179,900 PLN Net price: 42,850 EUR (exchange rate 4.2 EUR/PLN) (Prices may vary due to exchange rate fluctuations)

Stanje: zelo dobro (rabljeno), CATALOG NUMBER: 7133 TECHNICAL DATA - Maximum working width: 220 mm - Maximum working height: 120 mm – 5 spindles: 1) Lower horizontal: 220 mm, 5.5 kW 2) Right vertical: 120 mm 3) Left vertical: 120 mm; Spindles 2 and 3: 11 kW 4) Upper horizontal: 220 mm, 11 kW 5) Lower horizontal: 220 mm, 5.5 kW - All spindles adjustable vertically and horizontally - Spindle diameter: 40 mm - Pneumatic pressure rollers - 4 upper, toothed infeed rollers (2 double) - 1 upper double outfeed roller, smooth and rubber-coated - Lower outfeed roller, rubber-coated - Feed on Cardan shafts - Feed speed adjustment - Feed motor: 2.2 kW - Lifting motor: 0.25 kW - Electrically adjustable planing thickness - Infeed table length: 1970 mm - Centralized lubrication - Extraction port diameter: 4 x 120 mm, 140 mm - Dimensions (L x W x H): 3500 x 1550 x 1400 mm - Weight: 1750 kg ADVANTAGES – Equipped with 5 heads – Made in Germany – Not repainted – Used planer, very good condition Nodpfx Ahoy Ux Aas Uolb Net price: 43,900 PLN Net price: 10,450 EUR (depending on the exchange rate of 4.2) (Prices may change with significant exchange rate fluctuations)

Stanje: zelo dobro (rabljeno), Leto izdelave: 1996, Funkcionalnost: popolnoma funkcionalen, dolžina brušenja: 240 mm, vrsta vhodnega toka: trifazni, delovna širina: 240 mm, Weinig Rondamat 925 Leto izdelave: 1996 Največja širina orodja: 240 mm Premer brusnega koluta: 150–225 mm Luknja brusnega koluta: 60 mm Premer orodja: 100–230 mm Nodpfx Asy Azaqjh Uelb

Stanje: zelo dobro (rabljeno), Leto izdelave: 2018, obratovalne ure: 100 h, Funkcionalnost: popolnoma funkcionalen, vrtljajska hitrost (min.): 1.490 obr/min, vhodna napetost: 400 V, vhodna frekvenca: 50 Hz, Električni motor 200 kW IE4 Leto proizvodnje: 2024 Garancija: 6 mesecev 400 V 1490 vrt/min Nlodpfx Asn Tntqsh Usb 315 L

Stanje: rabljeno, Leto izdelave: 2002, 5 postaj + 1 rezkalni agregat Numerično pozicioniranje Mazanje miz Zračne blazine v mizi Kapaciteta 230mm/120mm Skupna moč 43 kW 380V Opremljena s 4 spiralnimi držali za orodja s ploščicami Dokumentacija stroja in servisni ključi Nlodpfx Ahsy S Rkqo Ujb Stroj je obnovljen in na zalogi

Stanje: zelo dobro (rabljeno), delovna širina: 250 mm, višina skobljanja: 140 mm, premer vretena: 50 mm, širina skobljanja: 250 mm, delovna višina: 140 mm, moč pogonskega motorja podajalnika: 30.000 W, največja hitrost vretena: 6.000 obr/min, vrsta nastavitve višine: hidravlični, vrsta vhodnega toka: trifazni, število vreten: 9, vhodna frekvenca: 50 Hz, Weinig Hydromat 25 9 spindles, Working width: 250 mm, Working height: 140 mm, Spindle diameter: 50 mm, Feed: 30 kW / 6 - 100 m/min, Spindle arrangement: 1-Bottom (11 kW) – with hydraulic clamping 2-Right (9 kW) 3-Left (11 kW) Nodjq Au Tlspfx Ah Uolb 4-Right (9 kW) 5-Top (15 kW) – with hydraulic clamping 6-Bottom (7.5 kW) – with hydraulic clamping 7-Top (7.5 kW) – with hydraulic clamping and straight jointer 8-Top (11 kW) – with hydraulic clamping and straight jointer 9-Bottom (11 kW) – with hydraulic clamping and straight jointer 11 powered rollers in the table

Stanje: zelo dobro (rabljeno), Leto izdelave: 2011, Funkcionalnost: popolnoma funkcionalen, Unicontrol 12 Includes: Cross-cutting unit (Pos. A), Tenon and slot spindle (Pos. C), Transfer belt (Pos. I), Profiling spindle (Pos. L), Profiling spindle (Pos. N), Vertical profiling unit right (Pos. P) For the production of individual parts and elements in frame-based or serial manufacturing processes. Consists of a cross-processing unit and a longitudinal processing unit, connected by a transfer belt. Working width: 40–140 mm (see pressure guide left 40–140 mm) Working height: 40–120 mm Workpiece length min.: approx. 275 mm + 1 x end profile length Longitudinal processing: approx. 220 mm + 2 x end profile length Nedpfx Ahsumci Se Uelb Workpiece length max.: 3500 mm Workpiece dimensions are dependent on machine configuration, manufacturing method, and tool assignment. Final definition of the part dimensions is only possible after receipt, review, and approval of the complete and finalized tool layout drawings. Cross-machining: Table feed motor power: 0.3 kW (0.4 HP) Pre-set feed speed during cutting, profiling, and return: 3–25 m/min Vario table with (studio window production possible) The clamping length of all tenon and slot spindles can be used without tool changeover slots. Workpiece clamping by means of a clamping bridge. Operated by clamping cylinders mounted under the table. Length stop NC controlled, mounted on the slotting table. Studio window device swivel angle max.: +/- 75° The minimum workpiece length for angled windows depends on the angle and the wood width. Possible part dimensions when manufacturing angled windows: Angle Max. Min. Working width Workpiece length +/-75° 80 mm 800 mm +/-70° 120 mm 490 mm +/-60° 240 mm 360 mm +/-90° 350 mm 185 mm For angles greater than 60°, only counter-processing is possible. Commission not documented. 1) NC angle adjustment automatic for angled part processing Tear-out protection via follow-up counter over the complete spindle length of the tenon and slot spindle for 90°processing. Manually adjustable counter wood strip for angled part processing. 2) Additional counter woods

Stanje: dober (rabljeno), Leto izdelave: 1981, Konfiguracija vreten: Spodaj Desno Levo Zgoraj Spodaj Hitrost vretena: 6000 obr/min Delovna širina: 170 mm Delovna višina: 120 mm Nodpfey Nmv Dsx Ah Ujlb Dolžina ravnalne mize: 2 m Opremljen s črpalko Waxilit Brezstopenjska regulacija podajalne hitrosti: 7–18 m/min Stranski pritisni valj Motorizirana nastavitev pritisne letev Opremljen s 5 rezalnimi glavami (3x L180 mm, 2x L130 mm) Na voljo dokumentacija stroja