Used Ma-Bu Automatic Punching Machine for sale (83,447)

Condition: excellent (used), Year of construction: 2015, For sale: professional pallet strapping system from the renowned German company ErgoPack. Model 725E is a fully electric device that facilitates safe and fast pallet strapping without the need for bending down – ideal for warehouses, logistics, and production environments. KEY ADVANTAGES - Automatic strap guiding around the pallet - 24V electric control - AUTO, MANUAL, SOFT operation modes - Adjustable strap tension - Maximum tensioning force up to 2500N - Ergonomic handling for operator comfort - Mobile, wheeled construction - Swiss quality craftsmanship (Swiss Made components) TECHNICAL DATA Manufacturer: ErgoPack Deutschland GmbH Model: 725E Power supply: 24V DC Max strap tension: 2500N Condition: used, in good technical condition Charger included CONDITION The device is complete. Shows normal signs of use from operation. Control panel works, the machine is ready for use. APPLICATIONS Gkjdpsyw Iagsfx Aansb - Warehouses - Logistics centers - Production - Pallet transport and packaging

Condition: used, Automatic packing machine Manufacturer: MAIR Model: .90.D.6.SL Automatic strapping machine with automatic wood support insertion Manufacturer: ITIPACK Gedpjyma Adsfx Aanjkb Model: SKE_M_TS-31J-WILT_4MR Working range Diameter round: 16 - 90 mm Thickness range: 0.8 - 5.0 mm Length: 4 - 12 m INCLUDING - Rollway (aprox.24m) with 2 sections - MAIR .90/D/6/SL, for hexagonal & rectangular bundles - Bundle lateral conveyor to strapping - AUTOMATIC Strapping machine ITIPACK with wood insertion - Longitudinal chain conveyor of strapped bundles - Bundle weighting and emulsion draining station - Bundles transversal chain for storage section - Electrical control and operator control panel Thickness: 0.8 - 5.0 mm Tube diameter: 16 - 90 mm Length: 4 – 12 m Square bundle: 200 x 200 mm - 650 x 520 mm Hexagonal bundle: 230 x 200 mm - 600 x 520 mm Bundle weight: 2 Tn

Condition: new, Year of construction: 2025, functionality: fully functional, CONSTMACH bucket-type sand washers are designed to effectively separate clay, dust, and foreign matter from aggregate materials, thereby improving material quality. Their durable construction and simple design ensure both long-lasting use and easy maintenance. The bucket system consumes minimal energy while washing the material through water circulation and significantly reduces water consumption. This provides an environmentally friendly solution and lowers operating costs. Standing out for their ease of installation and use, CONSTMACH bucket (Wheeled) sand washers are an ideal choice for improving aggregate quality in stationary or mobile crushing and screening plants. CBW-80 Bucket (Wheeled) Sand Washer Technical Specifications Motor Power: 5.5 kW Capacity: 80 – 90 m³/hour Bucket Size: 800 x 550 mm Rotation Speed: 2.5 rpm Wheel Diameter: 3,000 mm Number of Buckets: 40 CBW-100 Bucket (Wheeled) Sand Washer Technical Specifications Motor Power: 7.5 kW Capacity: 110 – 120 m³/hour Bucket Size: 1,000 x 550 mm Rotation Speed: 2.5 rpm Wheel Diameter: 3,000 mm Number of Buckets: 40 Why Choose CONSTMACH Bucket Washers? Gedpfsxpyfvjx Aanskb CONSTMACH is a leading brand offering reliable, efficient, and long-lasting solutions in the stone crushing and screening industry. Manufactured to high engineering standards, our bucket (Wheeled) sand washer models stand out with their minimal maintenance requirements, low operating costs, and high performance. Our professional approach to spare parts supply, technical support, and after-sales service ensures maximum efficiency for our users. By choosing CONSTMACH bucket washers, you can increase quality in your production processes and gain a sustainable production advantage by saving energy and water. What Do We Do at Constmach? Constmach is a leading machine manufacturer serving the construction and mining industries with a wide range of products tailored to their needs. Our product portfolio includes concrete block making machines, stationary and mobile concrete plants, stone crushing machines, stone crushing and screening plants, sand washing machines, sand making machines, asphalt plants, conveyor belt systems, jaw crushers, and mobile crushing plants. With its high quality standards, innovative production approach, and customer-focused solutions, Constmach stands out as a reliable brand in both national and international markets. Our products continue to be the preferred choice of industry professionals due to their durability, efficiency, and long-lasting use.

Condition: used, Year of construction: 1998, functionality: unexamined, punching force: 30 t, total height: 1,800 mm, total width: 2,800 mm, total length: 4,000 mm, sheet thickness (max.): 6 mm, sheet thickness steel (max.): 6 mm, Hydraulic stamping press, Euromac type CX 1000/30. Manufactured by EUROMAC (Italy) – 1998. Equipment as shown in the pictures. Parameters: - Hydraulic single-tool stamping press - Pressing force: 30 tons Gkedpfxsyi Ukno Aanob - Max. sheet size in the Y-X axis: 1000 mm x 10,000 mm (with repositioning) - Max. thickness of steel sheet: 6 mm - Max. punch diameter, station D: 80 mm - 200 strokes per minute Number of sheet-holding grippers: 2 Dimensions (L x W x H): 4000 x 2800 x 1800 mm, Weight: 5230 kg, Drive power: 7.5 kW

Condition: used, A very rare Hapfo Type AP-9000-M hydraulic automatic wood-copying milling and turning machine for turning round profiles such as balusters, table legs and lamp parts using a copying turning tool, as well as milling profiles using a milling unit and fluting curved workpieces. Gedpfszzkf Rex Aanskb Sample image! Illustration similar. Technical data: - Centre-to-centre distance: 330 mm - Max. workpiece diameter: 450 mm - Centre-to-centre distance: 4,100 mm - Power consumption: 7.6 kW - L x W x H: 5,800 x 1,100 x 1,500 mm - Weight: ~ 2,000 kg

Condition: excellent (used), functionality: fully functional, Year of construction: 2007, operating hours: 18,000 h, control type: CNC control, actuation type: electric, controller model: AMNC-F (FANUC 180i-PB), punching force: 20 t, overall weight: 18,000 kg, Equipment: CE marking, documentation/manual, Manufacturer: Amada Model: EM 2510 NT Punching force: 20 tons (200 kN) Year of manufacture: 2007 Stroke length (X/Y): 2500 x 1270 mm (expandable for larger sheets) with repositioning Turret configuration: 45 stations with 4 automatically indexable stations Control system: AMNC-F (FANUC 180i-PB) Touchscreen operation Power supply: 27 KVA Equipped with brush tables The machine is in very good condition! It can be inspected in working order on site. The machine will be supplied with several tools. Gkodpfx Aajzzrn Tsnjb Information and price available upon request.

Condition: ready for operation (used), Year of construction: 1986, Available immediately from our location: Fully automatic milling machine, Busch Type NF 8/32 Year of manufacture 1986 Groove width up to 32 mm Processing length up to 6100 mm Automatic material feed Automatic feed Drive power 5.5 kW Accessories: Support table Clamping devices, milling cutters Coolant system Digital display Weight 4 tons Price: EUR 2,500.00 plus VAT, ex works Gkodpfx Aajzwudconsb

Condition: refurbished (used), Year of construction: 2000, functionality: fully functional, machine/vehicle number: 150 152, total height: 6,615 mm, ram adjustment: 200 mm, installation height: 800 mm, table height: 1,000 mm, total width: 3,210 mm, total length: 5,140 mm, table length: 3,000 mm, table width: 1,400 mm, pressing force: 400 t, control cabinet height: 2,200 mm, control cabinet length: 3,600 mm, control cabinet width: 600 mm, type of input current: three-phase, clearance between the columns: 1,100 mm, distance between side stands: 1,100 mm, distance between stands: 3,020 mm, overall weight: 100,000 kg, year of last overhaul: 2025, ATTENTION: The machine is currently disassembled. Individual components can be inspected. Before delivery in 2026/2027, the machine will be completely overhauled mechanically and electrically. Pressing force: 4000 kN Adjustable stroke: 50 - 300 mm Ram adjustment: 200 mm Stroke rate: 15 - 60/min Working height: 800 mm Gkedpfx Aasw H Ag Tsnjb Table dimensions: 3000 x 1400 mm Ram dimensions: 3000 x 1200 mm New control system: SIEMENS S7 1500 series

Condition: ready for operation (used), In use from 1991 until it was last used and has been little prone to problems despite being a 1990s Chinese punching and riveting machine for oval eyelets. Gjdpfx Aajx Nd U Denjkb

Condition: used, Automatic packing machine Manufacturer : MAIR Model : .90.D.5.SL Automatic strapping machine with automatic wood support insertion Manufacturer: ITIPACK Model: SKE/M/TS-31 J-WILT/4MR Working range Diameter round: 16 - 90 mm Thickness range: 0.8 - 5.0 mm Length: 3,5 - 10 m Gkedovtp Hbspfx Aanob INCLUDING - Rollway (aprox.24m) with 2 sections - MAIR .90/D/5/SL, for hexagonal & rectangular bundles - Bundle lateral conveyor to strapping - AUTOMATIC Strapping machine ITIPACK with wood insertion - Longitudinal chain conveyor of strapped bundles - Bundle weighting and emulsion draining station - Bundles transversal chain for storage section - Electrical control and operator control panel Thickness: 0.8 - 5.0 mm Tube diameter: 16 - 90 mm Length: 3,5 – 10 m Rectangular bundle: 200 x 200 mm - 650 x 520 mm Hexagonal bundle: 230 x 200 mm - 600 x 520 mm Bundle weight: 3 Tn

Condition: good (used), functionality: fully functional, Year of construction: 2007, including Sheetmaster, Gripmaster, and Toolmaster Gkedpfx Aaozr Ha Eenob Year of manufacture: 2007

Condition: used, functionality: fully functional, Year of construction: 2003, operating hours: 53,000 h, control type: CNC control, controller manufacturer: Siemens, controller model: Sinumerik 840 D, laser type: CO₂ laser, laser power: 3,200 W, punching diameter: 76 mm, sheet thickness steel (max.): 8 mm, Equipment: cooling unit, documentation/manual, dust extraction, emergency stop, quick-change device, safety light barrier, Special equipment: + 2000 on Laser TruFlow 3200 + Blow-out device for small parts + Thread forming function with thread former breakage monitoring + MultiShear function + Slitting function + Marking/Fast chamfering function + Softpunch function + Re-punch cylinder + Vibration-damped mounting + Chip conveyor with tilting container + Additional clamping arm Manufacturer's standard description: Standard equipment: - Hi-Las high-pressure cutting - Laser cutting head with 5'' lens - Laser cutting head with 7.5'' lens - Cutting head quick-change system - Programmable cutting gas selection/pressure setting - Capacitive height control Dias III - Function: ContourLas - Slag cone detection - Compact dust extractor - Tank heater - 18 tool cassettes - 18 die plates - Automatic tool changer with 19 stations - 2 clamping arms - Rotation of all tools - NC-controlled, digital, maintenance-free three-phase drives - Automatic re-punching - Tool length compensation - Fast shutdown of the hydraulics - Automatic shutdown - 2 automatic dividing slides for parts 500 x 500 mm each - Sensors for both dividing slides - 2 scrap bins - Punch scrap extraction - Forming capability - Programmable stamping tool lubrication with 2 containers - Programmable pressure plate - Adaptive stroke length control - Safety devices Gjdpfx Aajzdc Hmonjkb - Remote diagnostics system - RJ 45 network connection - 3.5'' floppy disk drive - Comprehensive operating manual

Condition: used, Year of construction: 1994, KAISER Press Gedpfx Aezp Ed Roanskb Pressing force 4,000 kN Stroke adjustment 40-200 mm Ram adjustment 150 mm Stroke rate 20-80 1/min Table area 2,340 x 1,600 mm Ram area 2,000 x 1,500 mm Installation height 550 mm

Condition: used, Year of construction: 1980, pressure 25 t no. of strokes 1500 Hub/min total power requirement 20 kW Gkodpevu E Iqsfx Aansb

Condition: used, Year of construction: 2001, gebraucht 2001 9647 prompt, Zwischenverkauf v Italien 23200 € 1 30 to Gkjdpfx Aewirkgsansb 1250+N x 1000 mm 1250 mm 1000 mm 40 m/Min 30 m/Min 50 m/Min 30 mm 730 1/Min 300 1/Min 980 mm 4 kW 115 l 4000 mm 2780 mm 1900 mm 4000 x 2300 x 1900 mm + Z mm 4800 kg With 6-way multitool holder MTE6 (max. Dm. 24 mm) 2 Clamping claws Table with Brushes, table dimension 1970 x 2260 mm Foot pedal 2 pcs. additional single matrix holders PC with Euromac Software Eurowin 8.36 Max. Punching force 300 kN Automatic repositioning up to 10.000 mm Max. Punching diameter for single tool 88,9 mm, Max. Punching diameter Multitool Holder MTE6 Dm. 24 mm Max. Opening the clamping claws 7 mm Transport width: 2350 mm User Manual in english and italian CE declaration available WITH LARGE TOOL PACKAGE several pieces of each of the following dimensions: Round: Dm. 2,5/2,8/3/3,12/3,2/3,5/3,9/4,1/4/4,5/5/5,2/5,5/6/7/7,5/8/8,5/9/9 ,5/10/10,5/11/11,5/12/12,5/13/13,5/14/15/16/18/19/20/21/23 Square: 10/12/13/15 mm Rectangle: 5x2/20x2/22x4 mm Oblong hole: 10x6,5/12x8,5/12,2x10,7/18x5 mm BUYING USED MACHINERY IS A MATTER OF TRUST - OUR TRANSPARENCY PROMISE We offer you maximum security and complete transparency. • HONEST INSIGHTS: Detailed photos and functional videos of the current condition • LIVE ON-SITE CHECK: Live testing is possible at our facility • DIGITAL DEMONSTRATION: Individual live demonstration via video call • RISK-FREE PURCHASE: 14-day return policy Details:

Condition: excellent (used), functionality: fully functional, Year of construction: 2022, control type: CNC control, degree of automation: automatic, Fully automatic swivel bending machine with warehouse integration Manufacturer: TRUMPF Model: TruBend Center 7030 (B34) Year of manufacture: 2022 Control: TecZone Fold programming, touch operation, additional screen Gedpfjx Tii Ijx Aanskb TECHNICAL DATA: Max. bending length: 3,123 mm Min. bending length: 200 mm Max. box height: 220 mm Max. component size: 3,120 x 1,500 mm Max. diagonal of component: 3,460 mm Max. material thickness: Steel: 3 mm, Stainless steel: 2.2 mm, Aluminium: 4 mm Min. material thickness: 0.4 mm Min. bending depth (standard tool): 145 mm Min. bending depth (retractable hold-down tool): 30 mm Connected load: 80 kVA Average power consumption: 15 kW Space requirement (L x W x H): 8,348 x 5,113 x 3,345 mm (min. hall height: 4,300 mm) EQUIPMENT: - Front gauge - Loading grippers - Rotating part manipulator - 2-axis part manipulator with vacuum modules - 5-axis backgauge - Optical angle assistant - Hold-down tools - ToolMaster - Control unit with foot switch - ACB Laser (Automatically Controlled Bending) - 3-surface vacuum module set - 2-surface magnet module set - Bending tools OBW90 and UBW90 - Retractable hold-down tool ENW - Additional bending tool function ZBW Comprehensive set of various tools included AUTOMATION: - Robot and warehouse interface (use without warehouse requires adaptation) - Loading and unloading unit with warehouse integration (without pallet), including for blank separation - Safety fence, swing doors, light barriers - Unloading table with conveyor system Further information available in the pictures. This used machine can be inspected under production conditions. All information is without guarantee – sale excludes any warranties or guarantees. Subject to prior sale.

Condition: good (used), functionality: fully functional, *Description* Hydraulic shear and punch press *GEKA model HYD 50-S* No. 3497. Versatile 5-station machine, ideal for cutting and punching steel profiles. Robust machine, visible and in working order. *Technical Specifications* - *Brand / Model*: GEKA HYDROCROP HYD 50-S - *Machine No.*: 3497 - *Punching force*: 50 tons - *Bending force*: 50 tons *Capacities with standard blades* - *Angle iron*: 120 x 120 x 10 mm at 90° - *Flat bar*: 300 x 15 mm - *Round bar*: Ø 40 mm - *Square bar*: 40 x 40 mm - *Punching*: Ø28 x 13 mm thickness *Special Equipment* - *Bending*: 200 x 15 mm Gkodjzt Swlepfx Aanob - *Notching*: 250 x 250 x 6 mm - *Shear for UPN/UPE*: 100 mm - *Shear for IPN/IPE*: 100 mm *Condition* Complete machine with stations: punching, flat/angle/round/square shearing, bending, notching. Sold with punches. Heavy weight, mounted on a steel base.

Condition: excellent (used), Year of construction: 2007, Complete saw line consisting of loading unit, fully automatic circular saw, and unloading unit. Suitable for a wide range of applications, especially in the photovoltaic and automotive industries. Loading Unit: - Horizontal loading magazine model HLM - 4-strand timing belt conveyor - 6 compartments, each 285mm wide, for profile feeding - Maximum material height according to the saw cutting area; round material up to max. diameter 130mm - 3 sliding strips between timing belts as additional support - Profile length min. 2,700mm, max. 6,500mm Saw: - Fully automatic circular saw Pressta-Eisele model PROFILMA 510 E-SA - Saw blade diameter max. 500mm - Continuously variable speed adjustment - Hydro-pneumatic saw blade feed, infinitely adjustable, from rear to front Gjdpfx Aoxvbvvoanokb - Siemens S7-300 control system with touchscreen - Reversing device with five-fold stroke up to max. 5,000mm - Electric material feed 3 – 1,000mm (single stroke) - Cutting gap extension on both sides - Pneumatic unloading slide - Scrap flap after saw for offcuts / remains - Cut length depending on profile, from 8mm - Menzel minimum quantity lubrication system - Clamping pressure regulation - Two extraction nozzles for chip extraction Unloading: - Table size 1,500mm x 2,500mm - Pneumatic cross pusher

Condition: good (used), Year of construction: 1989, functionality: fully functional, pressing force: 30 t, We offer this good Bihler GRM 80 punching and bending machine, year of construction 1989. with 5 slides, 30T press, straightener, feeder Gkjdpfeywty Eex Aanjb with decoiler Tooling is not included If you have any questions or need more information, feel free to send us a message or give us a call.

Condition: excellent (used), METALLKRAFT Profile Steel Shear / Punch HPS 65 DS Combined Hydraulic Profile Steel Shear and Punch with Punching Station, Notching Station, and Flat Steel, Angle Steel, and Profile Steel Shear – enables simultaneous operation at punching and profile steel shear. Punching Station - Punching Force: 65 t - Punching Capacity: max. Ø 26 x 20 / Ø 57 x 10 mm* - Throat Depth: 305 mm - Stroke Length: max. 55 mm - Number of Strokes: 25 strokes/min - Working Height: 900 mm Rod Steel Shear - Cutting Capacity Round: max. Ø 45 mm* - Cutting Capacity Square: max. 45 x 45 mm* Angle Steel Shear - Cutting Capacity L-Profile 90°: 120 x 120 x 12 mm* - Cutting Capacity L-Profile 45°: 70 x 10 mm* - Cutting Capacity U/I Profile: 120 x 58 mm - Cutting Capacity T-Profile: 90 x 11 mm - Working Height: 1,140 mm Flat Steel Shear - Cutting Capacity 90°: max. 300 x 20 / 375 x 15 mm* - Miter Cut 45°: max. FL 100 x 15 mm* - Blade Length: 380 mm - Working Height: 900 mm Notching Station - Material Thickness: max. 10 mm* - Notching Width: max. 45 mm - Notching Depth: max. 90 mm - Notching Station: 100 x 100 x 10 mm Machine Data - Motor Power: 5.5 kW | 400 V - 50 Hz - Dimensions (LxWxH): 1700 x 950 x 1880 mm - Weight (net): approx. 1,600 kg Shipping on pallet via freight forwarder possible Europe-wide. Additional machines available! Take a look at our listings. If you have any questions, feel free to contact us by message or phone: Maschinenhandel Nord Gerstenstraße 2 17034 Neubrandenburg Gsdpfxjxizane Aanokb

Condition: excellent (used), Year of construction: 2011, functionality: fully functional, punching force: 28 t, sheet thickness (max.): 10 mm, sheet thickness steel (max.): 6 mm, punching diameter: 76 mm, overall weight: 16,000 kg, throat depth: 1,500 mm, Equipment: safety light barrier, Boschert Multipunch 1500 8-station tool changer incl. 4-station and 8-station multi-tool base bodies (with current tooling consisting of 18 punching tools) Punching force: 280 kN (28 tons) Travel ranges: x – 30500 mm (repositioning up to 9999 mm) y – 1580 mm Punch arm overhang: 1850 mm Tooling system: Trumpf Gr2 (76mm) as well as Boschert Revotool Labod 32065 graphic control / workshop programmable Max. sheet thickness: 6 mm (clamp opening) Max. installation height: 90 mm, stroke length 30 mm upwards and downwards, steplessly programmable. Table width, left + right: 3250 mm each Table depth: 3250 mm Table height: 900 mm Overall width: 6860 mm Overall depth: 5040 mm Overall height: 2080 mm Drive power: 25 kVA Machine weight: 16,000 kg Hydraulic oil capacity: 160 l Color: Blue RAL5017 / Light gray RAL7035 Gjdpfx Aajzw Dz Djnskb Machine year of manufacture: 2011 Ball roller table Punching slug extraction Fast hydraulics (400/800 strokes) very well-maintained condition new screen with accessories

Condition: good (used), Laminator Bagel Digifav 520 B2 automatic laminating machine The machine is 100% functional, in perfect condition, ready for production. Very low mileage. It is an advanced, high-performance machine dedicated to digital printing houses. Production Spain. Technical data: Max sheet size: 520mm x 720mm Min sheet size: 220mm x 220mm Min weight: 130 gsm Max grammage: 350 gsm Operating temperature: 80-145°C Max working speed: 22m/min Weight: 750 kg Power supply 380V Additionally, 6 Bar air A steel, chrome-plated cylinder with a large diameter, filled with oil for greater operational stability. Pneumatic pressure, separation and automatic feeding from a high stack. Adjustable pressing force. Expanding shaft for attaching the foil, mounted on a tilting arm. Touch panel for easy operation. Sheet straightening module. Gsdpfxozyz A Ro Aanokb Receiving table. Ask about the product

Condition: good (used), Year of construction: 2004, Item No.: Lg 34522 Gkodpfx Ajip Uqmoansb High-performance punching machine HAULICK+ROOS ROS 500 - 1250 used, in good condition Year of manufacture 2004 (without soundproof cabin) with - continuously adjustable drive - 2-connecting rod drive - pneumatic clutch-brake combination - stroke adjustment - Siemens PC 670 screen control - oil circulation lubrication Technical data Pressing force max. 500 KN Stroke rate 30 to 900 min.-1 Stroke 12 to 60 mm Installation height (max, stroke and upper die) 320 mm Frame width 1,250 mm Table area 1,250 x 730 mm Die opening in the table 1,160 x 140 mm Punch area 1,250 x 450 mm Punch adjustment 60 mm Drive power 26 kW Weight approx. 11,000 kg Dimensions (L x W x H) approx. 2,800 x 1,300 x 3,250 mm Equipment and accessories: Servo roll feed VAMCO SP 150 Year of manufacture 2014 Pass width max. 150 mm Material thickness max. 3.0 mm

Condition: good (used), Year of construction: 2004, Used CNC punching machine from Finn Power Type: C5 Travel range X: 2580 mm Travel range Y: 1270 mm Punching force: 30 tons Including tools Gjdsxphwyopfx Aanjkb

Condition: excellent (used), Year of construction: 2024, operating hours: 3,540 h, functionality: fully functional, punching force: 280 t, X working area max.: 3080 mm Y working area max.: 1540 mm Operating hours: 3540 hrs Control: CNC control LABOD with graphics Standard equipment Hydraulic punching machine - Punching force: approx. 280 kN (28 tons) - Throat depth: approx. 1750 mm - Max. punching diameter: 70.0 mm - Max. stroke height: 90 mm, steplessly programmable up and down via control - Table width left + right: 3430 mm each - Table depth: 3160 mm - Table height: 900 mm + 8 easily exchangeable cassette holders + Rotary drive, tool holders top and bottom continuously rotatable 360° + 1 piece, indexable Revotool tools + Programmable clamp positioning + Scrap slug extraction system + Spray device + Brush table + Brush table extension tables Godjy N Dwrspfx Aanekb + Multitalk, USB, SD memory card and network connection + Digital stroke height adjustment + Three-sided safety light barrier + Various intermediate matrix plates for Trumpf tooling sizes 1 and 2 + Tooling package + 1 set of keys and operating manuals + Boschert EasySharp tool grinding device