Used Klingelnberg Tool Grinder for sale (37,776)

Condition: excellent (used), Year of construction: 1982, KLINGELNBERG SNC 30 GRINDER Iodpfx Acsy S Akpspotn Brand: Klingelnberg Model: SNC 30 Type: Industrial grinder Year: 1982 Serial number: 3837 FEATURES: – Complete machine – Hydraulic unit and filtration system included – Heavy-duty industrial installation – Precision machine – Equipment visible in the photos

Condition: excellent (used), Amada Togu Surface Grinder Tool diameter (min.) Ø 2 Tool diameter (max.) Ø 160 Vertical traverse (mm) 200 Grinding speed: Stations A / B / C (mm/min) 0.06 Ijdpfx Acoz R A T Depstn Stations D / E (mm/min) 0.03 Dimensions: Length (mm) 750 Width (mm) 800 Height (mm) 1920 Weight (kg) 470

Condition: excellent (used), Year of construction: 2016, operating hours: 200 h, functionality: fully functional, total height: 1,760 mm, total length: 1,100 mm, total width: 850 mm, workpiece weight (max.): 12 kg, spindle speed (max.): 10,000 rpm, spindle speed (min.): 500 rpm, feed length X-axis: 100 mm, feed length Y-axis: 190 mm, feed length Z-axis: 325 mm, type of input current: three-phase, grinding wheel diameter: 125 mm, overall weight: 520 kg, grinding length: 270 mm, rotational speed (min.): 500 rpm, rotational speed (max.): 10,000 rpm, center height in crank: 220 mm, center height: 300 mm, collet bore: 25 mm, grinding spindle speed: 10,000 rpm, feed rate X-axis: 1 m/min, feed rate Y-axis: 1 m/min, feed rate Z-axis: 1 m/min, pivoting range: 360 °, travel distance X-axis: 100 mm, travel distance Y-axis: 190 mm, travel distance Z-axis: 325 mm, center width: 620 mm, grinding spindle motor power: 1,100 W, table length: 190 mm, table width: 200 mm, table height: 1,020 mm, power: 1.1 kW (1.50 HP), height adjustment type: electric, workpiece diameter (max.): 400 mm, input current: 20 A, grinding diameter: 300 mm, input frequency: 50 Hz, disc diameter: 125 mm, input voltage: 280 V, space requirement width: 2,000 mm, space requirement length: 1,800 mm, space requirement height: 1,800 mm, grinding wheel speed: 10,000 rpm, year of last overhaul: 2022, distance table to spindle center: 325 mm, tool diameter: 300 mm, workpiece length between centers: 270 mm, distance between centers: 270 mm, number of spindles: 1, Equipment: rotational speed infinitely variable, max. grinding diameter 238 - 620 mm grinding length 190 mm workpiece length 380 - 940 mm spindle turning speed - stepless 2 - 12000 U/min current capacity 380 kVA power capacity - grinding motor 1,1 kW total power requirement 2,2 kW Isdsw U Ehbopfx Acpstn weight of the machine ca. 0,6 t !!! We have almost all spare parts for the Deckel S 11 machines in stock !!! !!! Accessories can be varied as desired !!! We would be happy to trade in your used Deckel S 11 - contact us! 2016 S25 003004 V, 50/60 Hz, with CEE plug and cable Color: light gray motorized height adjustment, axial grinding spindle adjustment Equipment: * Opto-electronic measuring device with measuring electronics Image processing, PC (Original ISOG) * CCD camera and monitor * Dividing head Sk 40 with dividing disk 24 R * 1 dividing disk each 14, 16, 18 * Tightening screw M 16 * Counter bearing complete with 4 center punch points * Center point Sk 40 with driver * Twist-u. Relief grinding device with rack housing * Dust extraction completely without vacuum cleaner * LED machine light * Tooth support complete with support and sliding blades * Setting gauge * Universal setting gauge * Handwheel facility * Dressing device with 3 diamonds * 1 set of collets 1.0 - 17.5 mm by 0.5 mm rising * Pliers sleeve and extraction nut and key * 10 pieces of direct collets Sk 40 6 - 25 mm * 4 cone reducing sleeves Sk 40 x Mk 1, 2, 3, 4 * Clamping nut * 12 grinding wheel chucks * Tool cabinet with shelves * 2 protective hoods * various diamond / borazon discs * Operating instructions and key, spare parts list, circuit diagram * Set of technical grinding instructions ##### Machine is partially overhauled and has an electrical acceptance report!#####

Condition: repair required (used), Year of construction: 1989, functionality: not functional, Michael Deckel S 12 M tool grinding machine. The machine has an electrical problem, error on the display. Otherwise in good condition. Accessories: grinding wheel holders, operating manuals. Itedex Ncluopfx Acpsn

Condition: used, Year of construction: 1998, Walter Heli-Power Production 5-Axis CNC Tool Grinder. Serial No. 6802 (1998). Country of Origin: Germany Centralised Cutting Oil Tank and Eclipse Automag Oil Filtration/Separation System (2016) Please note: This item will be awarded to the highest bid from Lot 1, Lot 1A or Lot 2 Location: These lots are located in Sheffield, UK. Unfortunately, there are no loading facilities on-site, dismantling and loading will be at the cost of the purchaser Ijdpfx Ajz Ar Ebecpstn

Condition: used, Year of construction: 1996, total height: 2,150 mm, total length: 1,420 mm, total width: 2,010 mm, overall weight: 3,100 kg, grinding spindle speed: 6,000 rpm, travel distance X-axis: 400 mm, travel distance Y-axis: 250 mm, travel distance Z-axis: 580 mm, NC Universal 5-Axis Tool-and Cutter Grinder Walter Helitronic Power Technical details: CNC Control HMC 400 CNC X-axis movement 400 mm Y-axis movement 250 mm Z-axis movement 580 mm C-axis (table rotation) ± 200° Max diameter grinding wheel Ø 200 mm Spindle speed (grinding) 3000 / 6000 R/Min Iedpfx Aco Aawiqepetn If you have any questions concerning the machine, please do not hesitate to contact us by phone or e-mail. Feel free to view our other advertisements for a complete overview of our stock.

Year of construction: 2000, condition: used, Walter Helitronic Power Production 5-Axis CNC Tool Grinder. Serial No. 650083 (2000). Country of Origin: Germany Itsdpfx Acoz Ar Dqepsn Centralised Cutting Oil Tank and Eclipse Automag Oil Filtration/Separation System (2016) Please note: This item will be awarded to the highest bid from Lot 1, Lot 1A or Lot 2 Location: These lots are located in Sheffield, UK. Unfortunately, there are no loading facilities on-site, dismantling and loading will be at the cost of the purchaser.

Condition: excellent (used), Year of construction: 1988, TECHNICAL DATA. Max. clamping length: 90 mm Tool clamping height with tapered shank: 50 mm Tool clamping height with straight shank: 45 mm Max. helix angle: 45° Itsdewwkacepfx Acpen Number of clamping positions: 1 to 99 Max. slide travel: 550 mm Max. grinding wheel diameter: 350 mm Min. grinding wheel diameter: 150 mm Grinding wheel speed (variable): up to 2700 rpm Swivel range of grinding spindle axis: 0° to 15° Grinding slide feed rate (variable): 0.05 to 16 mm/min (with 3rd and 4th axis: 0.05 to 8 mm/min) Workpiece spindle taper: ISO Taper No. 40 Grinding Wheel Data CBN and diamond cup grinding wheel: Ø200 mm → Min. DFF: 66 (3rd axis), 76 (4th axis) Ø250 mm → Min. DFF: 16 (3rd axis), 26 (4th axis) CBN-ES cone grinding wheel: Ø200 mm → Min. DFF: 50 (3rd axis), 60 (4th axis) Ø250 mm → Min. DFF: 0 (3rd axis), 10 (4th axis)

Condition: refurbished (used), Year of construction: 2025, functionality: fully functional, total height: 1,760 mm, total length: 1,100 mm, total width: 850 mm, workpiece weight (max.): 12 kg, spindle speed (max.): 10,000 rpm, spindle speed (min.): 500 rpm, type of input current: three-phase, grinding wheel diameter: 125 mm, overall weight: 520 kg, grinding length: 190 mm, rotational speed (min.): 500 rpm, rotational speed (max.): 10,000 rpm, center height in crank: 220 mm, center height: 330 mm, collet bore: 25 mm, grinding spindle speed: 10,000 rpm, feed rate Z-axis: 1 m/min, pivoting range: 360 °, travel distance X-axis: 100 mm, travel distance Y-axis: 190 mm, travel distance Z-axis: 325 mm, center width: 620 mm, grinding spindle motor power: 1,100 W, table length: 500 mm, table width: 180 mm, table height: 1,020 mm, power: 2 kW (2.72 HP), height adjustment type: electric, workpiece diameter (max.): 620 mm, input current: 20 A, grinding diameter: 130 mm, input frequency: 50 Hz, disc diameter: 125 mm, input voltage: 360 V, space requirement width: 2,000 mm, space requirement length: 1,800 mm, space requirement height: 1,800 mm, grinding wheel speed: 10,000 rpm, year of last overhaul: 2025, warranty duration: 12 months, distance table to spindle center: 325 mm, tool diameter: 400 mm, workpiece length between centers: 270 mm, distance between centers: 300 mm, surfacing fence height: 190 mm, Equipment: rotational speed infinitely variable, max. grinding diameter 238 - 620 mm grinding length 190 mm workpiece length 380 - 940 mm current capacity 380 kVA power capacity - grinding motor 1,1 kW speeds of grinding spindle 2 - 10.000 U/min total power requirement 2,2 kW !!! We have almost all spare parts for the Deckel S 11 machines in stock !!! !!! Accessories can be varied as desired !!! We would be happy to trade in your used Deckel S 11 - contact us! * Machine and accessories completely overhauled with CE marking 400 V, 50 Hz, with CEE plug and cable BASICMACHINE!!! overhauled in 2023 Color: 2 K repainting Stand RAL 7005 mouse gray Structure and accessories RAL 7035 light gray motorized height adjustment, axial grinding spindle adjustment * Complete electrical conversion includes: > Fi circuit breaker > new three-phase drive > new brake motor > new frequency regulation > new touch-safe built-in electronics > EMV screw connections > EMV cables > new protective tubes > Emergency stop switch > new control panel * Machine stand milled + ground, new carrier plate Basic equipment: - LED light Waldmann - Suction without a vacuum cleaner Isdpfew U Ehhjx Acpstn - Protective cover for grinding wheels up to Ø 125 mm - Set of technical information - Abrasive wheel holder 51 mm - Set of suspension devices for transport - 5 adjusting screws * Operating key, operating instructions, spare parts list, circuit diagram * technical grinding instructions * CE-documents * Machine and accessories overhauled and with electrical acceptance report * abroad 6 months warranty

Condition: used, total height: 1,700 mm, total length: 1,400 mm, total width: 900 mm, Year of manufacture: 1970 Colour: Grey Empty weight: 500 kg - Year: 1970 - Serial number: CH - Control: Conventional - Motor power: 1.4kW - Transport dimensions: 1400mm x 900mm x 1700mm (l x w x h) - Transport weight [kg]: 500kg - Transport packages [pcs.]: 1 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Iodpozry I Ajfx Acpotn Lukas van Rossum

Year of construction: 1998, condition: used, Grinder for sharpening FOR TOOLS GRIFO F36 M FOR TOOLS FOR WOOD FACTORY WHIT PUMP HYDRAULIC AND SANDER dividing chain, SAWS, MILLING CUTTERS Itodpfx Acjb Umtkjpjn

Condition: good (used), Year of construction: 1999, functionality: fully functional, Fully working machine. if you need more information please contact me email,viber or whatsapp Ijdez Rmpbspfx Acpotn

Condition: ready for operation (used), Year of construction: 1999, • Year 1999 • In our possession since 08/2024 • Quinto 4 software • Electrostatic filter, Elbaron model Itsdpfx Aszcvaqjcpen • Numerous spindles • Recent maintenance performed: external cleaning and repainting, spindle overhaul, spindle belt replacement, brush and front plexiglass replacement, wheel and door rail replacement, machine measurement, offset adjustment, ball reference setting, backlash check, replacement of the air filtration and lubrication adjustment unit, replacement of 4 electric fans.

Condition: repair required (used), functionality: not functional, Walter HMC 500 WWM 5-axis tool grinding machine, damaged. A-axis: 750mm X-axis: 290mm Y-axis: 320mm Z-axis: 660mm Iodpez E Rcbsfx Acpotn Tool diameter: 200mm Error code shown in the picture.

Condition: used, Year of construction: 1974, Clamping length: max. 635 Iedpfszcyynex Acpetn Distance between centers: 125 Table travel: 400 Maximum grinding travel: approx. 300 Table speed, infinitely adjustable: 30-1000 mm/min Grinding spindle speed, 3 stages: 1750, 2150, 2850 1/min Weight: approx. 1800 kg

Condition: used, Year of construction: 2014, functionality: fully functional, machine/vehicle number: 2081-9007, total height: 2,200 mm, total length: 1,462 mm, total width: 1,750 mm, workpiece weight (max.): 20 kg, type of input current: DC, overall weight: 3,300 kg, travel distance X-axis: 250 mm, travel distance Y-axis: 795 mm, travel distance Z-axis: 250 mm, input frequency: 50 Hz, input voltage: 230 V, workpiece length (max.): 700 mm, workpiece width (max.): 200 mm, workpiece height (max.): 700 mm, protection type (IP code): IP54, Equipment: documentation/manual, type plate available, Measuring machine with 4 NC-controlled axes, featuring non-contact measurement technology and an additional measuring probe for the automated measurement of micro-precision tools such as milling cutters, drills, step and profile tools. Extended measuring range, specifically for long tools up to 700 mm in length. Due to an additional backlight camera with 400x magnification, even the smallest tools, i.e., microwork tools, can be measured in terms of contour or profile. Thanks to the 400x magnification in both backlight and front light, microwork tools can also be measured using the backlight method. Backlight CCD matrix camera 1, magnification = 50x, diameter (up to 150 mm) and length measurements (up to 700 mm), angle measurements, and radii of the outer contour can be measured. Backlight CCD matrix camera 2, magnification = 400x, observation at the tool circumference, diameter, length, angle measurements, and radii of the outer contour of mini or microwork tools can be measured. Front light CCD matrix camera 3, magnification = 400x, observation of the side view, e.g., helix angle, chamfer width, chip space depth, chip, spiral, and relief angles. Itjdpfx Acjzvdxaepjn Front light CCD matrix camera 4, magnification = 400x, observation of the end face, axial, relief, and radial angles, chamfer widths, center distances. Tool holder SK 50. Software features, see PDF Software License. The machine is sold as a complete workstation with all existing accessories. Also available with a second

Condition: used, Year of construction: 1972, functionality: fully functional, machine/vehicle number: 1307-62, total height: 1,600 mm, total length: 1,360 mm, total width: 610 mm, grinding wheel diameter: 175 mm, overall weight: 670 kg, grinding length: 500 mm, grinding spindle speed: 4,350 rpm, travel distance X-axis: 500 mm, travel distance Y-axis: 225 mm, travel distance Z-axis: 230 mm, grinding spindle motor power: 550 W, table length: 800 mm, table width: 165 mm, power: 0.55 kW (0.75 HP), disc diameter: 175 mm, Semi-automatic tool grinding machine with infinitely variable table drive. Machine inspected, grinding motor newly fitted with bearings. Grinding spindle of newer design without disturbing noises (repairable). Bellows in good condition, cross bellow new. Clamping surface undamaged. Electrical system inspected. For further details, see operating manual. Itodpoytq Absfx Acpjn

Condition: used, total height: 1,500 mm, total length: 1,200 mm, total width: 110 mm, Year of manufacture: 1998 Colour: Cream Empty weight: 750 kg Price: On request Itedpfezry Ivjx Acpjn - Year: 1998 - CE marking present: Yes - Serial number: 84915 - Control: Conventional - Transport dimensions: 1200mm x 110mm x 1500mm (l x w x h) - Transport weight [kg]: 750kg - Transport packages [pcs.]: 1 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: ready for operation (used), Year of construction: 1978, operating hours: 300 h, functionality: fully functional, machine/vehicle number: UWII/2567/78, Tool grinding machine Motorized height adjustment has been repaired Spare parts supply secured by repair shop >Grinding table 835 x 145 mm< Itsdpfx Acjv Hcbljpen Longitudinal travel by hand 500 mm Pivotability 90 degrees >Grinding head< Transverse movement 220 mm Height adjustment 250 mm Pivotability horizontally and vertically - 360 degrees Extension of the working range via eccentric plate Grinding spindle D60x240 mm Speeds - 2 belt speeds 3300/5400 rpm Weight approx. 700 kg Space requirement 1800 x 1300 x 1600 mm The machine is functional; all movements can be controlled by handwheel.

Condition: used, Year of construction: 2008, operating hours: 43,705 h, functionality: fully functional, machine/vehicle number: 192/2008, total height: 2,400 mm, total length: 1,800 mm, total width: 1,930 mm, workpiece weight (max.): 50 kg, spindle speed (max.): 500 rpm, type of input current: three-phase, grinding wheel diameter: 125 mm, overall weight: 3,800 kg, rotational speed (max.): 40,000 rpm, grinding spindle speed: 40,000 rpm, feed rate X-axis: 12 m/min, feed rate Y-axis: 12 m/min, feed rate Z-axis: 12 m/min, travel distance X-axis: 400 mm, travel distance Y-axis: 310 mm, travel distance Z-axis: 305 mm, grinding spindle motor power: 14,000 W, power: 22 kW (29.91 HP), workpiece diameter (max.): 250 mm, grinding diameter: 250 mm, input frequency: 50 Hz, input voltage: 400 V, grinding wheel speed: 500 rpm, year of last overhaul: 2023, number of spindles: 1, number of slots in tool magazine: 12, Equipment: rotational speed infinitely variable, We are offering this used Deckel S22E universal machining center, year of manufacture 2008. Model: S22 Serial number/year: 192/2008 Machine weight: 3700 kg Maximum wheel diameter: 150 mm Rotational speed: 40,000 rpm Wiring diagram: 2292509 S558 Mains voltage: 3P/N/PE 3x400 V Frequency: 50 Hz Nominal current: 25 A Power consumption: 15 kW Spare fuse: 32 A Control voltage: 24 V Suitable for oil-based grinding: Yes Spindle: Supplied with an additional fully overhauled backup spindle Spindle cooling: Equipped with external spindle cooling (MTA TAEevo Tech MINI 10, Year 2017, 486x660x876 mm) Fire suppression system: Kraft & Bauer FB 703 TFT monitor: Needs to be replaced Iedsy Nbnnspfx Acpjtn If you have any questions or would like more information, please feel free to contact us or call us.

Condition: good (used), Manufacturer: COBORN Type: RG4A Year of manufacture: probably around 1999 Machine type: PCD/PcBN tool grinding machine Control: RG5A Controller Grinding motor: approx. 2.2 kW Grinding spindle: Coborn precision spindle Spindle speed: approx. 2,000 / 4,000 rpm, depending on the model Max. grinding stroke: approx. 300 mm Itedpfxoz Nf Ubo Acpon Grinding process: oscillating / reciprocating Grinding wheels: diamond, type 6A2 Materials: PCD, PcBN, hard metal Application: cutting inserts, milling cutters, reamers, special tools The machine comes from a company liquidation and was fully functional until recently.

Condition: excellent (used), Year of construction: 2008, functionality: fully functional, spindle speed (max.): 12,000 rpm, feed length X-axis: 400 mm, feed length Y-axis: 400 mm, feed length Z-axis: 250 mm, type of input current: three-phase, rotational speed (max.): 12,000 rpm, travel distance X-axis: 400 mm, travel distance Y-axis: 400 mm, travel distance Z-axis: 250 mm, grinding spindle motor power: 10,500 W, power: 10.3 kW (14.00 HP), input current: 30 A, input frequency: 50 Hz, input voltage: 400 V, grinding wheel speed: 12,000 rpm, year of last overhaul: 2024, Equipment: rotational speed infinitely variable, For Sale: 2008 Schütte 305 Linear 5-Axis CNC Tool & Cutter Grinder | Siemens 840D | New Spindle | Medical-Grade Machine Now available at Used Machine Tools Ireland Ltd, this high-precision Schütte 305 Linear 5-Axis CNC Tool and Cutter Grinder (2008) is an exceptional solution for tool regrinding, complex geometry grinding, and high-volume production. Previously in operation at a leading medical device company, this machine has been meticulously maintained, with a brand-new spindle installed in 2024. This grinder is fully equipped with modern tooling support systems including fire suppression, Absolent mist extraction, Ebbco coolant filtration, and in-line chiller, making it production-ready for demanding grinding applications. 🔹 Manufacturer: Alfred H. Schütte 📅 Year of Manufacture: 2008 📍 Location: Ireland ⚙️ Condition: Very Good – Ex-medical device use 🚀 Availability: Immediate 🔧 Spindle: Replaced in 2024 🛠️ Technical Specifications: Machine: Schütte 305 Linear CNC Tool & Cutter Grinder Machine Type: 5 Axis CNC Grinder Model: 305 Linear Year: 2008 Control: Siemens 840D with Windows XP Axes: 5-Axis CNC X-Axis Travel: 400 mm X-Axis with Tailstock: 400 mm Y-Axis Travel: 400 mm Z-Axis Travel: 250 mm Spindle Motor Power: 14 HP Spindle Speed: Up to 12,000 RPM Software: SIGS – Schütte Integrated Grinding Software Condition: Very good – Ex-medical device industry Spindle Replaced: 2024 (new) ⚙️ Equipped With: Ijdpfxow Nycio Acpotn 🔥 Fire Suppression Unit 🌫️ Absolent Mist Extraction System 💧 Ebbco Coolant Filtration Unit ❄️ Ebbco In-line Chiller 🧠 Advanced SIGS Grinding Software 🛡️ New Spindle (2024) 💡 Ideal Applications: Tool & cutter regrinding Custom tooling production Precision carbide & HSS grinding Medical, aerospace, and high-specification manufacturing Schütte 305 Linear for sale Used 5-axis CNC tool grinder Tool and cutter grinder Siemens 840D Schütte SIGS software grinder CNC tool regrinding machine Ireland Schütte tool grinder with mist extraction Medical-grade grinding equipment High-performance cutter grinder 5-axis Notes: *Specifications are given in good faith but not guaranteed*

Condition: excellent (used), Year of construction: 2017, operating hours: 8,500 h, functionality: fully functional, Available in Q1/2027, equipment can still be adapted to meet specific needs. Universal 5-axis retrofitting grinding machine directly from the manufacturer. Equipped with the latest Horizon grinding software, tailored to the requirements of the tools and components. For re-sharpening hammer jaws, helical milling cutters, bevel gear cutters, cutting rotors, form cutters, industrial knives, circular knives, spur gears, skiving tools, deep-hole drills, and other workpieces/components. Working area: X-axis: 630 mm Y-axis: 345 mm Z-axis: 430 mm C-axis: Rotation angle 300° X3 auxiliary axis: Working area: 400 mm Grinding spindle: Interface: HSK80 (conversion to HSK50 possible) Power: 100% 28.8 kW Speed: Standard 12,000 rpm Measuring system and feed: Resolution of linear axes: 0.0001 mm Rapid traverse of linear axes: 30,000 mm/min Resolution of rotary axes: 0.001° Speed of C-axis: 150 rpm Itodpfxeyzqwcs Acpen Rotary axis: (A-axis SK50) Center height: Standard 175 mm Speed as spindle: 1,000 rpm Optional: 2,600 rpm Control system: Siemens 840D SolutionLine Tool changer: Single-wheel, 6-8 positions Coolant system: Turbo Separator Extraction system: LTA Fire extinguishing system: Kraft & Bauer Dressing unit Tailstock: optional Further accessories/clamping devices available from the extensive A. Haas clamping device catalog. Individual, customer-specific training programs. Includes pre-acceptance at the manufacturer's plant, IBN (installation, briefing, and training), and final acceptance at the customer's site. Financing options available upon request.

Condition: good (used), Year of construction: 2009, functionality: fully functional, Anca control system. Iedpfxoz Ry Tue Acpotn

Condition: excellent (used), Year of construction: 2012, functionality: fully functional, machine/vehicle number: 642, We are selling a polishing machine for polishing and rounding the cutting edges of precision cutting tools. It is primarily designed for carbide tools, including various types of drills and milling cutters. The machine allows for easy replacement of the container for coarse or fine polishing. The machine is in regular use, easy to operate, and consistently performs flawlessly. Iedpfx Aez Eib Nscpetn