Used Internal Cylindrical Grinding Machine for sale (71,344)

Condition: new, We offer you spare parts of all kinds for your conventional or CNC Karstens / EMAG WEISS / GP cylindrical grinding machine—covering your tailstock, workpiece headstock, grinding spindle headstock, ball screw spindles, glass scales, grinding wheel flanges, drive motors, axis drives (BOSCH SIEMENS), ECKELMANN controls, bellows, bearings, K11/K21 infeed controls (new and used), as well as Z-axis reversing blocks for exchange. We service machines from year of manufacture 1955 onwards: ASA-ASE-K10-K11-K12-K13-K16-K19-K21-K22-K23-K24-K25-K26-K27-K28- K29-K33-K35-K37-K50-K51-K52-K53-K57-W11-W21-GP cylindrical grinding machines—all assemblies based on Karstens design. Ledpfxoup Aike Abcehd Comparable/ EMAG-WEISS/ GP cylindrical grinding machines/ Studer/ Kellenberger/ Schaudt/ Tschudin/ Tacchella/ Dannobat.

Condition: new, We offer all types of spare parts for your conventional or CNC Karstens/GP cylindrical grinding machine, including components for your tailstock, workpiece spindle head, grinding spindle head, ball screws, glass scales, grinding wheel flanges, drive motors, axis drives (BOSCH SIEMENS), bellows, bearings, K11/K21 infeed control systems—new and used—as well as reversing blocks for the Z axis on an exchange basis. Also suitable for similar Weiss/EMAG/GP cylindrical grinding machines, Studer, Kellenberger, Schaudt, Tschudin, Tacchella, Dannobat, Bahmüller, Fortuna. Lhedsraibvspfx Abcod

Condition: refurbished (used), Year of construction: 2026, Karstens K11 1000 Full Equipment The cylindrical grinding machine has been completely overhauled by PS-Karstens. The machine has been tested and is in very good condition. Since we specialize in Karstens cylindrical grinding machines, we can offer you comprehensive service (both electrical and mechanical) for the machine after purchase. Technical Data: Centre distance: 1000 mm Centre height: 180 mm Workpiece weight: 100 kg (unsupported), 250 kg (between centers) Grinding wheel diameter: 400 mm Workpiece spindle: MT 4, steplessly adjustable speed 30–450 rpm, swiveling range 0 - 90° Tailstock: MT4, quill stroke 45 mm, fine adjustment for the quill Quill force: 200-600 N, hydraulically operated via foot pedal Table swivel angle: 10 degrees Infeed spindle travel: 80 mm Rapid traverse travel: 50 mm Coarse adjustment with air cushion: 280 mm External grinding spindle motor: 4 kW Internal grinding spindle motor: 2.2 kW Workpiece spindle motor: 0.55 kW Machine weight: net 3,800 kg Infeed drive by DC motor Air cushion assisted rapid adjustment of the grinding spindle headstock Lhsdsh Riwdopfx Abced for fast and safe positioning of the grinding position. Separate drive for spindles for external and internal grinding. Fully automatic operation cycle, infeed motion via star dial switch: Rapid approach, rapid return, grinding mode, infeed stop, micron infeed. Automatic longitudinal grinding cycle Central coolant supply to all grinding positions Workpiece headstock with steplessly adjustable drive for live and lockable spindle operations. Infeed control for longitudinal and plunge grinding, input for retraction, infeed amounts, feeds, spark-out times, empty strokes Digital readouts for grinding spindle B-axis, workpiece spindle, X and Z axes from HEIDENHAIN Paper band filter unit approx. 250 L Similar to Weiss / EMAG / GP cylindrical grinders / Studer / Kellenberger / Schaudt / Tschudin / Tacchella / Dannobat / Bahmüller / Fortuna

Condition: as good as new (ex-display), Year of construction: 2026, Center height: 181 mm Center distance: 650 mm Maximum grindable workpiece diameter: 360 mm Max. load (overhung): 1000 N / 100 kg Max. load (between centers): 3000 N / 300 kg Z-axis Table swivel angle: 10° Table drive hydraulic: 0–4 m/min X-axis Cross slide travel: 80 mm Rapid traverse (hydraulic): 50 mm Coarse positioning—air cushion: 280 mm Infeed drive via DC motor Rapid feed rate: 48 mm/min/Ø Infeed process: Plunge / Longitudinal grinding 4 pre-selectable feed rates: mm/min/Ø 0.01–48 4 pre-selectable infeed increments: mm/ 0.001–0.1 Spark-out during end stop grinding: s 0–99 / 0–99 strokes Jog infeed: mm/Ø 0.001 Grinding spindle headstock—universal, swiveling: degrees 0–180 Grinding wheel (external): D x width x bore mm 500x100x127 or 203.2 Grinding wheel (face, option): D mm 250x32x76.2 Grinding wheel (internal, option): D mm (2–250) Drive power (external, face): kW 5.5 (7.5) Drive power (internal): kW 2.2 Peripheral speed (external): m/s 35 (50) Grinding wheel wear (external): mm/Ø 160 Wheel guard width: mm 100 Ljdotqf Sqjpfx Abcehd Grinding spindle diameter: mm 60 Internal spindle mount: mm 80 (100) Workpiece headstock: Infinitely variable drive, MK 4: 1/min 30–270/ 50–450 Workpiece spindle lockable Spindle mount: mm MK 4/24 Spindle nose for flange mounting: MK 4 mm cylindrical Ø63H6 x 6 Workpiece headstock swivels on the rotary part: degrees 0–90 Tailstock: Quill mount / quill diameter: mm MK 4/750 Quill stroke mm: 45 Quill force N: 100–800 / 250–1400, adjustable Quill actuation: manual (foot switch) Quill fine adjustment: ±40μm Connections: Total power requirement of the machine: kW 6.5–10 Grinding spindle headstock: kW 5.5 (7.5) Workpiece headstock: kW 0.55 (1.1) Coolant cleaning: kW 0.75–2.2 Guideway lubrication pump: kW 0.1 Hydraulic pump: kW 1.5 Hydraulic tank: liters 80 Pneumatics: bar 6 Similar to Weiss/ EMAG/ GP cylindrical grinding machines/ Studer/ Kellenberger/ Schaudt/ Tschudin/ Tacchella/ Dannobat/ Bahmüller/ Fortuna

Condition: as good as new (ex-display), Year of construction: 2026, Karstens K11 650 Premium Retrofit Cylindrical Grinding Machine Manufacturer: Karstens Technical specifications: Centre distance: 750 mm Centre height: 180 mm / (250 mm optional) Workpiece weight: 100 kg (between centres) – 250 kg (supported between centres) Grinding wheel diameter: 400 mm or 500 mm (external grinding wheel) Workpiece spindle: MT 4, stepless speed adjustment 30–450 rpm, swivel range 0–90° Tailstock: MT 4, quill stroke 45 mm, quill offset adjustment Quill force: 200–600 N manual, (up to 2500 N adjustable as option) Table swivel adjustment: 12.5 degrees Cross slide travel: 80 mm Rapid traverse distance: 50 mm Lhsdpfx Aoiv Audsbced Coarse adjustment with air cushion: 280 mm External grinding spindle motor: 4 kW / (5.5 kW optional) Stepless speed setting of the grinding wheel via potentiometer Internal grinding spindle motor: 2.2 kW Workpiece spindle motor: 1.1 kW Hydraulic motor: 1.5 kW Lubrication motor: 0.1 kW Hydraulic tank: 80 litres Machine weight: Net 3,500 kg Feed drive via DC motor Air-cushioned rapid adjustment of the grinding spindle head for fast and precise positioning. Separate drive for external and internal grinding spindles. Fully automatic operation, feed movement controlled via handwheel switch: rapid feed, rapid return, grinding operation, feed stop, mym-feed. Automatic longitudinal grinding cycle Central coolant supply for all grinding zones Workpiece headstock with steplessly adjustable drive, with live and lockable spindle. Digital feed control with Siemens panel and Siemens PLC for plunge and traverse grinding, input for retraction, infeed values, feed rates, spark-out times, idle strokes, compatible with traditional Karstens infeed control, with colour Siemens touch panel. Scale in X and Z axis by HEIDENHAIN. Comparable with Weiss / EMAG / GP cylindrical grinders / Studer / Kellenberger / Schaudt / Tschudin / Tacchella / Dannobat / Bahmüller / Fortuna.

Condition: as good as new (ex-display), Year of construction: 2026, Karstens K11 1000 Premium Retrofit Cylindrical Grinding Machine Manufacturer: Karstens Technical Data: Centre distance: 1100 mm Centre height: 180 mm / (250 mm optional) Workpiece weight: 100 kg between centres, 300 kg with support Grinding wheel diameter: 400 mm or 500 mm (external grinding wheel) Workpiece spindle: MT 4, infinitely variable speed from 30-450 rpm, swivel range 0 - 90° Tailstock: MT4, quill stroke 45 mm Quill force: 200-600 N manual, (up to 2500 N adjustable = optional) Table swivel: 10 degrees Infeed spindle travel: 80 mm Rapid traverse: 50 mm Coarse adjustment with air cushion: 280 mm External grinding spindle motor: 4 kW / (5.5 kW = option) Infinitely variable speed adjustment of grinding wheel via potentiometer Internal grinding spindle motor: 2.2 kW Workpiece spindle motor: 1.1 kW Hydraulic motor: 1.5 kW Lubrication motor: 0.1 kW Hydraulic tank: 80 litres Net machine weight: 3800 kg Infeed drive via DC motor Air cushion-supported rapid adjustable grinding spindle stock for fast and safe positioning to grinding location. Separate drive for spindles for external and internal grinding. Fully automatic operating sequence, infeed movement via rotary dial switch: Rapid approach, rapid return, grinding operation, infeed stop, mym-infeed. Automatic longitudinal grinding cycle Central coolant supply for all grinding zones Workpiece headstock with infinitely variable drive for both live and lockable spindle operation. Ledpfx Ajh Rimmobcjhd New digital infeed control with Siemens panel and Siemens PLC for longitudinal grinding and plunge grinding, inputs for retraction, infeed amounts, feed rates, spark-out times, dwell strokes; compatible with the old Karstens infeed control; with colour Siemens touch panel. Similar to Weiss/ EMAG/ GP cylindrical grinders/ Studer/ Kellenberger/ Schaudt/ Tschudin/ Tacchella/ Dannobat/ Bahmüller / Fortuna

Condition: as good as new (ex-display), Year of construction: 2026, Karstens K11 1000 Premium Retrofit Cylindrical Grinding Machine Manufacturer: Karstens Ljdpfx Asiv Au Ejbcehd Technical specifications: Centre distance: 1100 mm Centre height: 180 mm (250 mm optional) Workpiece weight: 100 kg between centres (unsupported), 300 kg between centres Grinding wheel diameter: 400 mm or 500 mm (external grinding wheel) Workpiece spindle: MT 4, infinitely variable speed control 30–450 rpm, swivelling range 0–90° Tailstock: MT4, quill stroke 45 mm Quill force: 200–600 N manually, (up to 2500 N adjustable, option) Table swivel: 10° Cross slide travel: 80 mm Rapid traverse: 50 mm Coarse adjustment (air cushion): 280 mm External grinding spindle motor: 4 kW (5.5 kW optional) Infinitely variable grinding wheel speed adjustment via potentiometer Internal grinding spindle motor: 2.2 kW Workpiece spindle motor: 1.1 kW Hydraulic motor: 1.5 kW Lubrication motor: 0.1 kW Hydraulic tank: 80 litres Net machine weight: 3,800 kg Infeed drive via DC motor Air cushion-supported rapid adjustment of the grinding spindle head for fast and safe positioning to the grinding position. Separate drive for the spindles for external and internal grinding. Fully automatic operation, infeed movements controlled via rotary selector switch: rapid advance, rapid return, grinding mode, infeed stop, micrometre infeed. Automatic longitudinal grinding cycle Central coolant supply to all grinding points Workpiece headstock with infinitely variable drive for rotating and lockable spindle. New digital infeed control with Siemens panel and Siemens PLC for traverse and plunge grinding; input for retraction, infeed amounts, feed rates, spark-out times, idle strokes; compatible with the original Karstens infeed control; with coloured Siemens touchscreen; HEIDENHAIN scales in X and Z axes. Comparable to Weiss/EMAG/GP cylindrical grinding machines/Studer/Kellenberger/Schaudt/Tschudin/Tacchella/Dannobat /Bahmüller/Fortuna

Condition: refurbished (used), Year of construction: 2026, Karstens K11 650 The cylindrical grinding machine has been completely overhauled by PS-Karstens. The machine has been tested and is in very good condition. As specialists in Karstens cylindrical grinding machines, we can provide you with complete service (electrical and mechanical) for the machine after purchase. Technical Data: Centre distance: 650 mm Centre height: 180 mm Workpiece weight: 100 kg (between centers), 250 kg (supported) Grinding wheel diameter: 400 mm Workpiece spindle: Morse taper 4, infinitely variable speed 30–450 rpm, swiveling range 0–90° Tailstock: MT4, quill stroke 45 mm, micrometer adjustment Quill force: 200–600 N, hydraulically operated via foot pedal Table swiveling: 10 degrees Feed spindle adjustment range: 80 mm Rapid traverse: 50 mm Rough adjustment with air cushion: 280 mm External grinding spindle motor: 4 kW Internal grinding spindle motor: 2.2 kW Workpiece spindle motor: 0.55 kW Machine weight: net 3,800 kg Feed drive by DC motor Air-cushion-assisted rapid adjustment of the grinding spindle stock for fast and precise positioning of the grinding position. Separate drives for external and internal grinding spindles. Fully automatic operating sequence, feed movement controlled via cam switch: Rapid approach, rapid return, grinding mode, feed stop, micron feed. Lsdpfx Aoh Rixxjbcshd Automatic longitudinal grinding cycle Central coolant supply for all grinding positions Workpiece spindle head with infinitely variable drive for live and locked spindle operation. Feed control for both plunge and traverse grinding, input for retraction, feed amount, feed rates, dwell times, and idle strokes Paper band filter system approx. 250 L Comparable to Weiss/EMAG/GP cylindrical grinding machines/Studer/Kellenberger/Schaudt/Tschudin/Tacchella/Dannobat /Bahmüller/Fortuna

Condition: as good as new (ex-display), Year of construction: 2026, Centre height: 181 mm Centre distance: 1000 mm Maximum grindable workpiece diameter: 360 mm Max load cantilevered: 1000 N (100 kg) Max load between centres: 3000 N (300 kg) Z-axis: Table swivel angle: 10° Table drive, hydraulic: 0–4 m/min X-axis: Cross slide travel: 80 mm Rapid traverse (hydraulic): 50 mm Coarse adjustment – air cushion: 280 mm Infeed drive by DC motor Rapid infeed speed: 48 mm/min/Ø Infeed cycle: Plunge grinding / Longitudinal grinding 4 preselectable speeds: mm/min/Ø: 0.01–48 4 preselectable infeed increments: mm: 0.001–0.1 Automatic shut-off during stop-grinding: 0–99 s or 0–99 strokes Stepwise infeed: mm/Ø: 0.001 Grinding headstock universal, swivelling: 0–180° Grinding wheel (OD): D x width x bore: 500 x 100 x 127 mm or 203.2 mm Grinding wheel (face, option) D: 250 x 32 x 76.2 mm Grinding wheel (ID, option) D: 2–250 mm Drive power, external/face: 5.5 (7.5) kW Drive power, internal: 2.2 kW Peripheral speed, external: 35 (50) m/s Grinding wheel wear (OD): mm/Ø: 160 Guard width: 100 mm Grinding spindle diameter: 60 mm Internal spindle mounting: 80 (100) mm Workpiece headstock: Infinitely variable drive: MK 4, 1/min: 30–270 / 50–450 Workpiece spindle lockable Spindle mounting: MK 4/24 mm Spindle nose for flange attachment: MK 4, cylindrical Ø63H6 x 6 mm Headstock swivels on rotating part: 0–90° Tailstock: Quill mounting / Quill diameter: MK 4, 750 mm Quill stroke: 45 mm Quill force, N: 100–800 / 250–1400 adjustable Quill operation: manual (foot switch) Quill fine adjustment: ±40 μm Connections: Total machine connected load: 6.5–10 kW Grinding headstock: 5.5 (7.5) kW Workpiece headstock: 0.55 (1.1) kW Coolant filtration: 0.75–2.2 kW Lubrication pump – guideways: 0.1 kW Hydraulic pump: 1.5 kW Hydraulic tank: 80 l Pneumatics: 6 bar Comparable to: Weiss / EMAG / GP cylindrical grinders / Studer / Kellenberger / Schaudt / Tschudin / Tacchella / Dannobat Lhodpfxstqf Rzj Abcod

Condition: used, Year of construction: 2008, Here are some key details: Ledpfxexmurxe Abcohd - CNC universal cylindrical grinding machine WUG 21 base machine by CNC-Technik Weiss. (The WUG 21 features a Karstens machine bed on which the CNC system is mounted.) - Year of manufacture: 2008 / operated in single-shift use only - 1000 mm between centers - Workpiece spindle headstock and tailstock MK4 - Wheel diameter up to 500 mm - Wheel mounting at a 26.5° angle - Grinding wheel drive with programmable SUG - Grinding spindle headstock manually swivellable on air cushion - Wheel positioned on the right - Internal grinding attachment mounted at the rear, including dressing device - Eckelmann control system - DIN programming - Cycle programs - Manual grinding: yes - Automatic dressing - Marposs acoustic emission monitoring for external grinding wheel, including software package - Grinding wheel spindle and workpiece spindle driven by V-belt drive

Condition: used, Year of construction: 1997, 2 x cylindrical grinding machines Kellenberger type: kel varia, year of manufacture 1997 and 1995. Technical data and more pictures available on request. Lsdpox T A Iwsfx Abcjhd

Year of construction: 2014, condition: ready for operation (used), A Karstens cylindrical grinding machine from 1992, which was completely overhauled and modernized in 2014, is available. Center width: 1000mm, center height: 180mm, grinding diameter: 360mm, max. workpiece weight center/flying: 250kg/70kg, grinding wheel diameter: 400mm. Spindle holder: MK4, speed: 450rpm, swivel range: 90°, quill holder: MK4, quill stroke: 45mm, quill force: 600N. Table swivel: 10°, infeed spindle: 80mm, rapid traverse: 50mm, coarse adjustment: 280mm, weight: approx. 3800kg. Including 3x centering points and grinding wheels as good as new. Documentation available. On-site inspection is possible. Ledpfx Absv Suftecehd

Year of construction: 2016, condition: ready for operation (used), Grinding wheel diameter: 220mm, grinding wheel width: 5mm, base body width: 20mm, bore diameter: 52mm. Test piece: diameter: 100mm, width: 300mm, profile height: 35mm. Small workpiece: Outer diameter: 400mm, bore diameter: 205mm, wheel width: 100mm, torque: 20Nm, weight including mandrel: 200kg. Large workpieces: Outer diameter: 700mm, bore diameter: 350mm, disk width: 300mm, torque: 800Nm, weight: 250kg. Accuracy: Repeat accuracy: less than 2µm, axial and radial run-out accuracy (large spindle): less than 2µm at 400mm diameter, axial and radial run-out accuracy (small spindle): less than 2µm at 200mm diameter, parallelism over 300mm between test piece and workpiece axis: less than 2µm. Tool spindle speed: 10000rpm, small workpiece spindle: 23000rpm, large workpiece spindle: 6000rpm, test piece spindle: 1000rpm. Lhjdpfx Abev T Aqgeced

Year of construction: 1971, condition: ready for operation (used), A Wotan internal roll grinding machine is available. Workpiece diameter: 1200mm, max. outside diameter: 1000mm, max. bore diameter: 900mm, travel X/Z: 370mm/800mm, swiveling: 15°, table travel: 500mm, grinding depth: 250mm, speed: 220rpm. Machine dimensions X/Y/Z: approx. 5000mm/3000mm/2200mm, weight: approx. 8500kg. Documentation vorhanden. An on-site inspection is possible. Ljdsxyk S Uopfx Abcshd

Year of construction: 1958, condition: ready for operation (used), Grinding length: 1500mm, center height: 175mm, max. workpiece diameter: 350mm, max. workpiece weight: 300kg, grinding wheel diameter: 450mm, grinding wheel width: 80mm, bore: 203mm. Machine dimensions X/Y/Z: approx. 3600mm/1900mm/1900mm, weight: approx. 4000kg. Documentation available. An on-site inspection is possible. Lhjdpfx Aboyg Nvmocsd

Condition: ready for operation (used), An external cylindrical grinding machine Kellenberger is available. Distance between centers: 1000mm, center height: 175mm, max. workpiece diameter: 250mm, travel X/Z: 1000mm/220mm, grinding wheel diameter: 500mm, speed: 1530rpm. Machine dimensions X/Y/Z: approx. 3000mm/1850mm/1750mm, weight: approx. 3150kg. A viewing on site is possible. Ledpoxxzi Iefx Abcjhd

Year of construction: 1996, condition: ready for operation (used), Center height: 150mm, max. grinding diameter: 300mm, distance between centers: 620mm, max. workpiece weight: 120kg, grinding head spindle swivel range: +45°/-15°, table adjustment: +/-8.5°, travel X/Z: 160mm/756mm, grinding wheel dimensions X/Y/Z: 400mm/63mm/127mm, grinding wheel speed: 45m/s, workpiece spindle speed: 700rpm. Machine dimensions X/Y/Z: approx. 3000mm/1850mm/1850mm, weight: approx. 3000kg. Including LTA extraction system and SBS wheel balancing device. The workpiece drive is disassembled and its completeness is unknown. Documentation available. An on-site inspection is possible. Lhsdpoxvdd Ajfx Abcsd

Year of construction: 2016, condition: ready for operation (used), A centerless round polishing machine Loeser is available. Workpiece diameter range: 10mm-30mm, workpiece length range: 100mm-1000mm, stations: 2, working direction: left-right, magazine system with infeed and outfeed table: 1000mm/1000mm. Including magazines as well as infeed and outfeed table. Documentation available. An on-site inspection is possible. Lhedpfovzbg Asx Abcod

Condition: used, Year of construction: 1965, There are two WMW SU 315x3000 available, connected load machine 1/ 2: 12.6/ 12kW, weight machine 1/ 2: 8.2/ 9t, machines need overhauling. Ledsxg Ihgspfx Abcjhd

Condition: ready for operation (used), An older precision cylindrical grinding machine Kellenberger including accessories is available. Centre width: 200mm, centre height: 125mm, max. workpiece weight: 3kg, max. workpiece diameter: 245mm, max. workpiece length: 130mm. An on-site inspection is possible. Lhodew Edpgspfx Abced

Year of construction: 1974, condition: ready for operation (used), A Karstens cylindrical grinding machine with display is available. Center height: 180mm, grinding diameter: 360mm, center width: 650mm, max. workpiece weight flying/between centers: 70kg/250kg. Grinding wheel outer diameter: 400mm, face diameter: 250mm, peripheral speed: 35m/s, speed: 450rpm, mounting cone: MK4, quill diameter: 50mm, fine adjustment: 0.08mm. Machine dimensions X/Y: approx. 3250mm/2150mm, weight: approx. 3600kg. On-site inspection is possible. Lhsdpfx Abjvf Iy Rocsd

Year of construction: 1999, condition: ready for operation (used), Center height: 175mm, grinding length: 650mm, B-axis: -15°/195°, workpiece speed: 1750rpm, grinding wheels T1/T2: 500mm/400mm, bore: 203mm, max. workpiece weight: 80kg, workhead: MK4, tailstock: MK3. Machine dimensions X/Y/Z: approx. 3000mm/3000mm/2100mm, weight: approx. 4000kg, operating hours: 56300h, control: GE Fanuc Series 16i-T. Documentation available. On-site inspection is possible. Expected to be available from February/March 2025. Lodpfx Asuku Syobcjhd

Year of construction: 2014, condition: ready for operation (used), Grinding diameter: 6mm-150mm, max. grinding stroke: 125mm, swing diameter over table/with cover: 600mm/260mm, travel X/Z: 500mm/170mm, rapid traverse: 10m/min, feed: 10m/min, resolution X/Z: 0.0001mm, workpiece spindle speed: 850rpm. Machine dimensions X/Y/Z: approx. 2550mm/3100mm/1800mm, weight: approx. 2600kg. Documentation available. An on-site inspection is possible. The machine is located in China. Lhedjxf Ikfspfx Abcod

Condition: good (used), Jones and Shipman Suprema 650 M Easy Universal OD/ID Cylindrical Grinder s/n SO19131, w/ J&S PLC Control, 12" Swing x 25" Centers, Swivel Wheelhead w/ OD & ID Capability, Internal Spindle, Hydromation Coolant System, Heidenhain DRO, Workholding NOT Included Lhjdpfx Aoywfyqebcjd

Condition: used, Year of construction: 1964, 200 mm Ljdpfx Aboyacnvecshd mechanical ja weight 1,5 t ja