Used Boschert Profi 28 / 1000 Cnc for sale (21,870)

Condition: ready for operation (used), functionality: fully functional, Year of construction: 2014, machine/vehicle number: 441, working width: 1,000 mm, throat depth: 220 mm, overall weight: 3,600 kg, pressing force: 28 t, Equipment: CE marking, TECHNICAL DETAILS Pressing force: 28 t Max. working width: 1,000 mm Column gap: 950 mm Throat depth: 220 mm Back gauge depth: 415 mm MACHINE DETAILS Dimensions & Weight Dimensions (L x W x H): 1,500 x 1,150 x 2,400 mm Weight: 3,600 kg Transport packages: 1 Pgsdsy Rxy Dspfx Airsu Power: 3.0 kW EQUIPMENT CE marking Documentation

Condition: ready for operation (used), Year of construction: 2007, stroke length: 200 mm, throat depth: 200 mm, installation height: 325 mm, pressing force: 28 t, working length: 835 mm, No minimum price – guaranteed sale to the highest bidder! TECHNICAL DETAILS Press force: 28 t Bending length: 835 mm Travel range of the back gauge: 0 – 370 mm Stroke: 200 mm Distance between frames: 890 mm Support table: 200 x 275 mm Overhang: 200 mm Installation height: 325 mm Number of cylinders: 1 Working speed Press travel: 8-10 mm/s Retraction: max. 35 mm/s Positioning accuracy: +/- 0.05 mm MACHINE DETAILS Pedpfjzzkwgex Airogu Dimensions & Weight Dimensions (L x W x H): 1,600 x 1,500 x 2,200 mm Total weight: 3,500 kg EQUIPMENT Operating manual Safety device Mechanical tool clamping (top) The height and weight of the asset must be taken into account when selecting the transport vehicle. A forklift is available for loading. If the asset is not collected on time, a storage fee of €20.00 per lot and per day (or part thereof) will be charged. The fee must be paid before collection. The sale is made without any warranty or guarantee. The information on the technical data comes from the original offer. No guarantee is given for typographical or measurement errors. If in doubt, please compare the information with the photos provided or inspect the goods on-site before the end of the auction.

Condition: good (used), Year of construction: 2007, Machine is in good condition. Pgjdpfx Aez N Dgvsireu

Condition: used, functionality: fully functional, Year of construction: 2007, overall weight: 3,500 kg, total length: 1,600 mm, total width: 1,500 mm, total height: 2,200 mm, pressing force: 28 t, Bending length: 835 mm Back gauge travel range: 0 - 370 mm Stroke: 200 mm Distance between frames (clearance): 890 mm Support tables (L x W): 200 × 275 mm Throat depth: 200 mm Installation height: 325 mm Number of cylinders: 1 Working speed Psdpfjy N Umkox Airsgu Pressing stroke: 8-10 mm/s Return: max. 35 mm/s Ram positioning accuracy: +/- 0.05 mm Operating manual available

Condition: excellent (used), Year of construction: 2003, functionality: fully functional, Very compact punching and nibbling machine Suitable even for limited space Boschert EL500CNC Z TRUMPF rapid tool change system Punching force: 280 kN (28 tons) Travel distances x- 1000 mm (repositioning up to 9999 mm) y- 580 mm Punching arm overhang: 730 mm Trumpf Gr1-3 (105mm) tool system Labod 32040 graphic control / workshop programmable Max. sheet thickness: 6 mm (clamp opening) Max. stroke height: 90 mm, continuously programmable upwards and downwards. Punching slug extraction Table width left + right: 1100 mm each Podpfx Ajhr A Nvoirsgu Table depth: 810 mm Table height: 900 mm Overall width: 2582 mm Overall depth: 2800 mm Overall height: 2080 mm Drive power: 20 kVA Machine weight: 8,300 kg Hydraulic oil capacity: 80 l Color: Reseda green RAL6011/Light gray RAL7035 Machine year of manufacture: 2003 Very well-maintained condition with a lot of accessories Tool cabinet

Year of construction: 2005, condition: ready for operation (used), Clearance between the frames: 890mm, throat depth: 200mm, bending width: 1000mm, press force: 280kN, connected load: 5.5kVA, required fuse protection: 3x 16A, weight: 3.5t. An inspection on site is possible. Podpfx Aezbb R Eoirsgu

Condition: ready for operation (used), Year of construction: 2008, pressure 56.0 t chamfer lenght 1400 mm Pedpfxozy Sdxo Airsgu distance between columns 1300 mm throat 220 mm stroke 200 mm dayligth 485 mm work speed 8.0 - 10.0 m/min return speed 35.0 mm/sec Control CNC Boschert back stop - adjustable 0 - 370 mm work height max. 915 mm Cylinders : 2 Stück voltage 3x 400 V connected load 8.0 kVA weight 3700 kg very good / well-maintained condition (!!) with lots of bending tools - in checked conditions - machine video - ?v=NrpZs6Ar0Vo Equipment: - NC electro-hydraulic press brake - BOSCHERT NC control unit, front - NC electro-motorized back stop (X axis) * with 2x manually adjustable stop fingers (R+Z axis) - AMADA PROMECAM (SYSTEM A) upper tool holder - AMADA PROMECAM (SYSTEM A) lower tool holder - Handwheel with analog display for adjusting the bending angle - lots of insert tools, including tool cabinet - 1x working cylinder = double-acting cylinder - upper beam made from a solid steel plate - pressure gauge for pressing pressure (infinitely adjustable) - 2x front support tables - 1x freely movable foot switch - robust machine base - rear protective device (cover + circuit breaker) - original operating instructions (machine + control)

Condition: good (used), Year of construction: 1998, Boschert TRI1000 x 2000 CNC Z TRUMPF quick tool change system Punching force: 280 kN (28 tons) Travel distances: x – 2000 mm (adjustable up to 9999 mm) y – 1200 mm Punch arm reach: 1350 mm 3 punching heads, Trumpf tool system, size 1-3 (105mm) Head 1-3 Control system: Labod 32040 graphic control / workshop programmable Max. sheet thickness: 6 mm (clamp opening) / 10 mm Stroke height: 45 mm, infinitely adjustable upwards and downwards Table width left + right: 2100 mm each Table depth: 1800 mm Table height: 900 mm Overall width: 4082 mm Overall depth: 3500 mm Overall height: 2080 mm Drive power: 20 kVA Machine weight: 11,200 kg Hydraulic oil capacity: 80 l Color: Blue / Light Grey RAL7035 Pgedpsizctcjfx Airou Machine year of manufacture: 1998 Good condition / refurbished, new safety light barriers New memory module with USB/SD card and LAN New HMI with display Lots of accessories 4 tool cabinets suitable to be placed under the machine table

Condition: good (used), Year of construction: 2014, operating hours: 5,722 h, functionality: fully functional, machine/vehicle number: 379, punching force: 28 t, sheet thickness steel (max.): 6 mm, working range: 2,080 mm, punching diameter: 105 mm, workpiece weight (max.): 200 kg, overall weight: 9,200 kg, lifting height: 90 mm, input voltage: 400 V, repeat accuracy: 0.03 mm, For sale: a Boschert Compact 1000 Rotation, manufactured in 2014, serial number 379, located in Königsdorf/Bavaria (south of Munich). CNC punching/nibbling machine for sheet metal processing: – Punching force 28 t (280 kN) – Trumpf tool system (sizes 1–3, up to Ø 105 mm) – Rotating head: all tools can be rotated 360° continuously – Boschert CNC 32050 control with TFT operating panel, DXF import – Working area 1060 × 2080 mm, repositioning for long sheets – Sheet metal thickness up to 6 mm steel Meter readings taken directly from the control panel (photo in the advertisement): – Machine running: 5,722 hours – Hydraulics running: only 1,285 hours – Stroke counter: 2.3 million strokes The machine has been used little and is currently operational – inspection with demonstration is possible on short notice after arranging an appointment. Video will be provided later. Tool inventory and documentation available upon request. Podozkviajpfx Airegu Dismantling and loading will be carried out by the buyer or by arrangement. Payment must be made before collection. Sale as seen, excluding any warranty. Export possible. Quick and straightforward transaction – please include a callback number with your inquiry.

Condition: ready for operation (used), Year of construction: 2002, functionality: fully functional, machine/vehicle number: 3021600302, center height: 230 mm, center width: 2,000 mm, grinding diameter: 355 mm, controller model: Siemens 840 D, TECHNICAL DETAILS Center distance: 2,000 mm Center height: 230 mm Grinding diameter: max. 355 mm Z-axis speed: 0.01–15 m/min Z-axis resolution: 0.5 µm X-axis speed: 0.01–10 m/min X-axis resolution: 0.5 µm Pgedpfx Aj Agfzbeirsu External grinding wheel, standard, outer diameter × width × bore: 500 × 80 × 203 mm Grinding wheel peripheral speed: 35 m/s Surface grinding wheel, standard, outer diameter × width × bore: 400 × 40 × 127 mm Drive power, external grinding spindle: 9 kW Speed, external grinding spindle, adjustable: 600–1,900 rpm Drive power, internal grinding spindle: 2.2 kW Speed, internal grinding spindle: max. 28,000 rpm Speed, workpiece spindle: 0–500 rpm Taper bore, workpiece spindle: MK 5 Taper bore, tailstock center: MK 5 Cylindricity adjustment: +4′ to −4′ MACHINE DETAILS CNC control: Siemens 840 D Total connected power: 25 kW Operating voltage: 400 V Phases: 3 Mains frequency: 50 Hz Total weight: 10,000 kg Operating noise level: 70 dB(A) according to EN 31201

Condition: used, Year of construction: 2011, Offer: High-Precision and Versatile Punching/Nibbling Machine Boschert Compact 500 CNC Z (Year 2011) – Ideal for Flexible Sheet Metal Processing! We are selling a powerful and reliable punching/nibbling machine from the renowned manufacturer Boschert, which impresses with its advanced features and precision. This machine is the ideal solution for a wide range of punching and nibbling tasks, from one-off pieces to large-scale production. Key Features: • Manufacturer: Boschert • Model: Compact 500 500 x 1000 CNC Z • Year of manufacture: 2011 • Intuitive CNC Control: Multi-axis Ladob controller with graphical user interface for easy programming and visualization of machining processes. • Extended work area for greater flexibility: o X-axis: 0–2000 mm (enables processing of long workpieces) o Y-axis: 0–750 mm (offers ample space for wide sheet metal) • Ultra-fast tool change: Trumpf quick-change tool system ensures minimal downtime and maximum productivity. • Universal tool compatibility: Compatible with the full range of Trumpf tools – reduce your tooling costs and expand your capabilities. Podpfx Aex Uxtfjiregu • Secure and precise material handling: o Collet clamping: Ensures a firm grip of the workpiece during processing. o Non-contact repositioning up to 9999 mm: High-precision repositioning device with 2 sheet holders for efficient processing of even very long sheets without loss of position. • Dynamics and precision at their best: o Maximum positioning speed: 60 m/min for fast processing cycles. o Infinitely variable feed rates: Optimal adjustment of processing speed to the material and task. o Highest positioning accuracy: ± 0.05 mm for precise results on every workpiece. • Robust and durable construction: o Y-axis drive: Two ball screw-driven carriages located left and right beside the machine table ensure maximum stability and torsional stiffness. o X-axis drive: Ball screw and four recirculating ball guides guarantee precise and smooth movement. • Specialized equipment for small parts: Stop plate (L-bracket) for secure processing of small parts that can no longer be safely held by the collets – for maximum flexibility and minimal scrap. Condition: The machine is in very good, well-maintained condition and has been serviced regularly. It is immediately ready for operation and offers excellent performance for your sheet metal processing needs.

Condition: reconditioned (used), functionality: fully functional, Year of construction: 2012, working width: 2,200 mm, stroke length: 200 mm, distance between stands: 2,000 mm, overall weight: 4,500 kg, pressing force: 56 t, Boschert Profi 56-2200 CNC Year of manufacture: 2014 Cybelec DNC15 control system with color graphics Technical data: Press force: 56 tons Bending length: 2200 mm Distance between side walls: 200-180 mm Rear stop 1 + 2 (X-axis): 365 mm / 500 mm Pedpfxjz N Ahfj Airjgu Table height / working height: 920 mm Max. installation height: 400 mm Stroke: 200 mm Working speed: 10 mm/sec Retraction speed: 45 mm/sec Repeatability: +/- 0.02 Intermediate pieces Int100 with quick clamping Adjustable front supports Amada tool system incl. many tools

Condition: used, Year of construction: 1988, Tool CNC Milling Machine HERMLE type UWF 1000 CNC Year of construction: 1988 Travel X: 700 mm Travel Y: 550 mm Travel Z: 500 mm Numerical Command: HEIDENHAIN TNC 155 Spindle ISO 40 Spindle: Ø 70 mm Spindle speed: from 25 to 3150 RPM Table size: 1000 x 500 mm Vertical sleeve travel: 100 mm Swivel head Spindle motor: 6,9 kW Weight: 3,3 T Problem on CNC. Machine sold as it is. (Screen from CNC need to be changed) Pgodpfx Aiez Nx H Djreu

Condition: like new (used), Year of construction: 2021, operating hours: 400 h, functionality: fully functional, machine/vehicle number: skyCNC 6008, travel distance X-axis: 900 mm, travel distance Y-axis: 6,100 mm, travel distance Z-axis: 270 mm, feed rate X-axis: 20 m/min, feed rate Y-axis: 15 m/min, feed rate Z-axis: 8 m/min, workpiece length (max.): 6,000 mm, workpiece width (max.): 800 mm, workpiece diameter (max.): 270 mm, table width: 800 mm, table load: 400 kg, overall weight: 3,250 kg, spindle speed (min.): 15,000 rpm, X 900 Y 6100 Z 270 mm 11 kW (800 table) Available for immediate delivery! PFEIFER technology skyCNC Milling Machine 6008 – 11 kW / 5 ATC (As good as new, from 2021, only 400 operating hours) CNC Milling Machine – High-precision and powerful milling and drilling with extremely high speed and quality Pgjdpfx Aewlqpyjirsu A 6-meter CNC milling machine with automatic tool changer, in mint condition, is offered for sale on behalf of a customer. The machine is available for immediate delivery and ready for operation at the customer's premises; the sale is due to the conversion to laser processing. The machine can be inspected with power at the customer's/seller's premises in 07819 Triptis. Key data: - Working/travel area (LxWxH): 6100 mm x 900 mm x 270 mm (clearance height under gantry 300 mm, max. tool length 300 mm) - Automatic 5-station tool changing system with ISO40 tool holder (optional 10 tool changing stations possible); includes 5x ISO40-ER32-75 tool holders and 5x ER32 collets - HPM minimum quantity lubrication/spray cooling for cooling the workpiece and tool, automatically controlled by a solenoid valve via M-code - T-slot table 6000 mm x 800 mm - Includes 3 HOMGE HBV-8-300 pneumatic quick-action vises; jaw width 200 mm, clamping force up to 8.0 t – continuously adjustable; high clamping accuracy; Patented pneumatic system - Central lubrication access points - Automatic tool length measurement - Mobile MPG control unit for quick and easy machine control, freely selectable workpiece zero points - Ethernet connection for data transfer via network, USB port - File formats: G-code, DIN ISO data - Incl. industrial computer system with 17" TFT touchscreen, PC keyboard, and mouse - HF milling spindle: HSD spindle ES951 A 1112 S / 11 kW, air-cooled; spindle speed: 3,000 - 15,000 rpm - Power supply: 3-phase AC 400 V / 50 Hz, power consumption: max. 15 kW - Dimensions (L x W x H): 6850 x 1440 x 2163 mm, weight: approx. 3250 kg - Compressed air connection: min. 7 bar, including air filter required Sale to commercial customers only! Support and service provided by PFEIFER technology and Innovation Plauen

Condition: good (used), Year of construction: 2002, functionality: fully functional, Boschert TRI 1500 CNC Z Rota Revo Tool quick-change system TRUMPF Punching force: 3 x 280 kN (28 tons) Station 1 Trumpf system tool - size 3 (105 mm) with spray device Station 2 Trumpf system tool - size 3 (105 mm) freely rotatable and indexable Station 3 Trumpf system tool/Boschert Revotool - size 3 (105 mm) Station 4 Engraving head incl. Revotool 8-position tool holder Travel distances x- 3000 mm (repositioning up to 9999 mm) y- 1580 mm Punch arm outreach: 1730 mm Tool system Trumpf size 1-3 (105 mm) Psdpfx Aez R Da Ssiregu Labod 32050 graphic control / workshop programmable Max. sheet thickness: 6 mm (clamp opening) Max. stroke height: 90/45 mm, continuously programmable upwards and downwards. Punching scrap extraction Ball rollers in the machine table Table width left + right: 3200 mm each Table depth: 2810 mm Table height: 900 mm Overall width: 6482 mm Overall depth: 4600 mm Overall height: 2110 mm Drive power: 25 kVA Machine weight: 15,800 kg Hydraulic oil capacity: 160 l Color: Blue RAL 5017 / Light gray RAL 7035 Machine year of manufacture 2002 Well-maintained condition - currently being overhauled Available from mid-November 2026 with a large amount of accessories

Condition: excellent (used), functionality: fully functional, Year of construction: 2018, stroke length: 500 mm, operating speed: 10 mm/s, reverse speed: 30 mm/s, overall weight: 4,800 kg, total length: 2,010 mm, total width: 1,600 mm, total height: 2,200 mm, input voltage: 400 V, input current: 32 A, input frequency: 50 Hz, pressing force: 560 t, clearance between the columns: 1,260 mm, table width: 1,400 mm, type of input current: three-phase, year of last overhaul: 2026, Equipment: CE marking, documentation/manual, safety light barrier, We are offering this very good Boschert Quick-Bend 56 CNC press brake, manufactured in 2018. Manufacturer: Boschert Model: Quick-Bend 56 CNC Year of manufacture: 2018 Condition: very good Pjdpfxoy Nbw Aj Airogu Category ID: 1466 Type ID: 1717 Machine type: press brake If you have any further questions or need more information, please send us a message or give us a call.

Condition: excellent (used), Year of construction: 2008, Technical specifications: Pgodpfs Abayhjx Airsu max. cutting force: 280 kN max. sheet metal thickness (steel): 12.7 mm working area: 1310 x 2500 mm number of CNC-controlled axes: X; Y max. stroke rate (standard): 250/min max. stroke rate (rapid traverse): 800/min max. workpiece weight: 200 kg CNC control motor power: 11 kW dimensions (length x width x height): approx. 7000 x 6000 x 2150 mm machine weight: approx. 14 tons Accessories: Tools several movable support tables The seller is not liable for typographical errors or data transmission errors. The machine's appearance, technology, and wear correspond to its age; used machines are sold without any warranty.

Condition: excellent (used), Year of construction: 2010, Boschert TRI 1500 CNC Z Rota Revo TRUMPF quick tool change system Punching force: 3 x 280 kN (28 tons) Station 1 Trumpf system tool - size 3 (105 mm) with spray device Station 2 Trumpf system tool - size 3 (105 mm) with freely indexable rotation Station 3 Trumpf system tool / Boschert Revotool - size 3 (105 mm) incl. Revotool with 8-position tool holder Travel distances x- 3000 mm (repositioning up to 9999 mm) y- 1580 mm Punching arm overhang: 1730 mm Tool system Trumpf size 1-3 (105mm) Labod 32060 graphic control / workshop programmable Max. sheet metal thickness: 6 mm (clamp opening) Max. stroke height: 90 mm, continuously programmable upwards and downwards. Punching scrap extraction Ball bearings in the machine table Table width left + right: 3200 mm each Table depth: 2810 mm Table height: 900 mm Overall width: 6482 mm Overall depth: 4600 mm Overall height: 2110 mm Pgsdpfx Aieid I D Asreu Drive power: 25 kVA Machine weight: 15,800 kg Hydraulic oil capacity: 160 l Color: Blue RAL 5017 / Light gray RAL 7035 Machine year of manufacture: 2010 Very well-maintained condition - Overhauled with a large amount of accessories

Condition: ready for operation (used), Year of construction: 2007, punching force: 29 t, total height: 2,020 mm, total width: 3,210 mm, sheet thickness (max.): 4 mm, overall weight: 9,300 kg, product length (max.): 4,900 mm, CNC Punching Machine manufactured in 2007. This BOSCHERT Compact 1000 features a working range of 1,000 × 2,000 mm and a maximum punching force of 280 kN. It is capable of handling workpieces up to 150 kg and can punch holes with a diameter of 105 mm. If you are looking to get high-quality sheet metal punching capabilities, consider the BOSCHERT Compact 1000 machine we have for sale. Contact us for further details. • Condition: Very good technical condition • Machine status: Under power • Previous application: Aluminium sheets, 1–3 mm thickness • Tools included: NoWorking area • Working range without clamp reduction: 1,000 × 2,000 mm • Maximum X-axis travel with repositioning: 9,999 mm • Maximum workpiece weight: 150 kgPunching unit • Maximum punched-hole diameter in one stroke: 105 mm • Nibbling frequency: 500 strokes/minAxis speeds • Max X-axis positioning speed: 60 m/min • Max Y-axis positioning speed: 30 m/min • Max simultaneous X/Y positioning speed: 67 m/minAccuracy • Machine tolerance (VDI 3441): ±0.1 mmTooling • Manual tool-change time: approx. 15 s • Maximum number of tools with RevoTool: 8 • RevoTool change time: approx. 3 s • Revo Tools shown in the advertisement: Not includedElectrical data • Main circuit breaker: 32 A slow, 50 A • Installed power: 20 kVA / 25 kVA Pjdpfozp Hz Rjx Airjgu Additional notes • Software requires an update (machine not used for ~2 years) • Loading and transport are not included

Condition: used, Year of construction: 1994, punching pressure:20 t total power requirement:4 kW Pgodpfx Ae Ad Skkoirou weight of the machine ca.:2,8 t dimensions of the machine ca.:3,2 x 1,4 x 1,45 m punch diameter:max. 105 mm sheet thickness - max.:6 mm stroke length max.:25 mm voltage:380 V frequency:50 Hz connected load:4 kVA punch diameter:105 max. mm input unit:0,01 mm

Year of construction: 2016, condition: used, functionality: fully functional, machine/vehicle number: MACH1097, For sale is a reliable and precise grinding machine from the leading French manufacturer, Forézienne (MFLS), designed for the automated and high-quality sharpening and profile restoration of band saw blades. Thanks to its precise CNC control, the machine ensures uniform geometry of the saw teeth, extends the service life of the cutting tools, and significantly reduces setup time. The machine is ready for industrial use, well-maintained, and suitable for both sharpening centers and the woodworking industry. Podpfxozxpkme Airogu

Condition: good (used), functionality: fully functional, Boschert Compact Rotation 1000x2000 Psdoznu T Eopfx Airjgu Equipped with the Trumpf tool system and featuring the Boschert rotation, which enables continuous 360° rotation of the punching tool up to tool size III. Punching force: 28 tons. Spray device. Chip extraction system.

Condition: used, Year of construction: 2004, sheet width 1000 mm plate length 2000 mm plate thickness 6 mm Punching capacity 280 kN Control Boschert connected load 18 kVA fuse 3 x 20 A Pgsdpfx Asyi Hpcsirsu total power requirement 15 kW weight of the machine ca. 11 t dimensions of the machine ca. 4,5 x 2,8 x 2,0 m Multi-tool various stamps / dies Software / Dongle Metalix cncKad V10

Condition: good (used), Year of construction: 2003, functionality: fully functional, Compact 1000 working range of 1,000 × 2,000 mm. Maximum metal length (working length): 2,000 mm Maximum steel/sheet thickness: 4.0 mm Pjdpfx Ajz Hfmdoirogu Maximum punching force of 280 kN. Maximum work piece up to 150 kg Maximum diameter of 105 mm.

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 Pgodpfx Aez Rmanjirju 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 + 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