Used Cnc Heavy Duty Lathe Poreba for sale (15,949)

Condition: used, HEIGHT OF CENTERS 700 LENGTH BETWEEN CENTERS 12000 TURNING DIAMETER ON THE BENCH 1400 MM TURNING DIAMETER ON THE SOCKET 1760 MM TURNING DIAMETER ON THE CARRIAGE 960 MM BENCH WIDTH 700 MM NR SPEED 27 SPINDLE SPEED 3 - 750 RPM SPINDLE HOLE 200 MM TAILSTOCK QUILL DIAMETER 120 MM TAILSTOCK CONE ATTACHMENT 6 CM TAILSTOCK TRAVEL 380 MM RAPID ON THE CARRIAGE CHUCK DIAM. 500 MM Hodpfxerzt Eko Am Tjr NR 01 FIXED REST NR 01 STEADY REST

Condition: used, CENTER HEIGHT 800 MM DISTANZA OF THE CENTERS 3000 MM MAX DIAMETER TURNABLE ON BED 1570 MM MAX TURNABLE ON THE CARRIAGE 1120 MM BED WIDTH 700 MM WEIGTH ADMIT BETWEEN CENTERS 6000 KG SPINDLE SPEED 8 - 350 mm SPINDLE BORE 102 MM TAILSTOCK : DIAMETER QUILL 135 MM STROKE 300 MM NOSE ATTACHMENT 80 METRIC MOTOR POWER 25 HP Hsdpsrzt Haofx Am Tsr PLATFORM 1200 MM DRO HEIDENHAIN 2 AXIS SQUARE TOOL TURRET RAPID FEED PROTECTIONS ON THE SPINDLE AND GUIDES

Condition: used, turning diameter over bed 3800 mm turning diameter over slide rest 3200 mm turning length 12000 mm faceplate diameter 3100 mm steady 2 bed width 4000 mm turning speeds 200 U/min workpiece weight 90.000 kg Hydrostatik Spindellagerung Hydrostatik Lynette The tech. Data are manufacturer or operator information and therefore non-binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team Hodeyqwa Uspfx Am Tor

Condition: used, Technical details: turning diameter over bed: 3800 mm turning diameter over slide rest: 3200 mm turning length: 12000 mm Hsdjx Ngzyepfx Am Ter faceplate turning speed range -stepless-: 2 - 200 U/min max. workpiece weight: 90.000 kg bed width: 4000 mm 2 steadies *

Condition: used, Year of construction: 1988, turning diameter over bed 2000 mm turning diameter over slide rest / mm turning length / mm - Type 1 K 671 320 F3 - Year of manufacture 1988 (first commissioned in 1998) - Turning length 10,000 mm - Turning diameter over bed 2,000 mm (modified) - Faceplate diameter 1,950 mm - Faceplate clamping range 400 - 1,350 mm - Speeds 1.00 - 140 rpm - Torque 125,000 Nm - Main cutting force 130 kN max. - Automatic swiveling tailstock - Max. workpiece weight 70 tonnes Hsdpfxsxn Tz Io Am Tsr - Max. workpiece weight with steady rest 100 tonnes - Drive power 100 kW - Number of bed ways 4 - Dimensions 22,000 x 6,200 x 2,900 mm - CNC control SIEMENS 840D (2010 for €220,000.00) - Support feed X-Z 0.3 - 4,000 mm/min. - Support rapid traverse X-Z 4,000 mm/min. - Inner cone dimensions 140 x 1:7 - The machine complies with CE guidelines - Includes 2 steady rests, 1 roller block, 4 jaws, boring device - Condition: very good condition

Condition: used, Punching machine brand: CCCP ROMENS weight: approx. 5,200 kg table diameter: 630 mm Hodpfx Amjykmfye Tjr stroke: 320 mm

Condition: used, Year of construction: 1958, turning diameter over bed 3050 mm turning diameter over slide rest 2500 mm turning length 21200 mm Control Siemens type 840D turning speeds 0,236-60 U/min faceplate 3000 mm main drive motor 200 kW tailstock quill diameter 900 mm steady 1200 mm steady 1200 mm steady 750 mm steady 750 mm with live steady 2000 mm faceplate 2000 mm Thickness 330 mm workpiece weight 200 t vier Bahnenbett Mitlaufendes Stützlager durchmesser 680 Bohrstangenlagerung Rollenbock Rollenbock mit Adapter Hedpfxsyqtpro Am Ter Bohrstand 450 x 10300 mm Bohrstand 650 x 11100 mm Innenschleifmaschine Faros Adapt for Bohrstangenaufnahme The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1987, turning diameter over bed 1100 mm turning diameter over slide rest 780 mm turning length 4100 mm Control Siemens type 840 D bed width 710 mm faceplate 1000 mm turning speeds 1110 U/min total power requirement 4,79-69 kW weight of the machine ca. 14 t Machine has been overhauled No.: Hedpfeyqvvbjx Am Ter The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: ready for operation (used), Year of construction: 2009, Seiger SLZ 1000 cycle lathe Hjdpfx Amsu T Dryj Tsr year of construction 2009 center distance 3000mm Circulation over bed 1010 Circulation over facing slide 650 Drive at 100% ED 37KW at 60/ ED 52KW max. torque approx. 9000NM Speed 5-900rpm X Feed force max 240000N Z feed force max 16000N Control Heidenhain Manual Turn with faceplate and steady rest The offer is aimed exclusively at traders within the meaning of §14 BGB

Condition: used, Year of construction: 1969, functionality: unexamined, For sale is a robust, heavy-duty lathe from Yamazaki / Mazak, model Rex 610 × 1500 (centre distance 1500 mm, swing over bed 610 mm). Ideal for machining large and long workpieces. The machine is in condition commensurate with its age. It has not been tested and is sold as is. Our service promise: Quality, expertise, and customer satisfaction are our top priorities. Our team consists of qualified and experienced technicians specialised in both Mazak machines and other brands. We place great emphasis on personalised support and are happy to assist you at any time even after your purchase. With us, you are in the best hands – professional, reliable, and passionate about machinery! PS CNC Service Germany GmbH & Co. KG Hjdpfxexyv Alj Am Tsr All details without guarantee.

Condition: used, Year of construction: 1980, turning diameter over bed 1930 mm turning diameter over slide rest 1520 mm turning length 5000 mm turning speeds 0,5-250 U/min spindle bore 105 mm workpiece weight 35 t steady 400-700 mm steady 700-1200 mm steady 1000-1600 mm control Siemens total power requirement 106 kW The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. Hodpfx Amsyutp He Tjr We look forward to your visit. Your Markus Hirsch Team

Condition: used, turning diameter over bed 2100 mm turning diameter over slide rest 1300 mm turning length 6800 mm workpiece weight 25000 kg Hjdpjyt Rzkofx Am Tjr main drive motor 140 kW Control Siemens type 840 C faceplate 1100 mm bed width 2500 mm steady 800 mm steady 800 mm steady 800 mm steady 600 mm The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1972, turning diameter over bed 920 mm turning diameter over slide rest 720 mm turning length 4000 mm turning speeds 1,4-280 U/min digital readout Acurite steady 640 steady 500 faceplate 900 mm The tech. Data are manufacturer or operator information and therefore non- binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop Hsdpfsyt Rx Ajx Am Tsr If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Your Markus Hirsch Team

Condition: used, Year of construction: 1988, turning diameter over bed 2200 mm turning diameter over slide rest 1650 mm turning length 6000 mm 0 75 kW spindle turning speed range 2,8-600 U/min spindle bore 102 mm Height of centres 1100 mm accessories: Planscheibe, Futter accessories: Lynetten weight of the machine ca. 45 t The tech. Data are manufacturer or operator information and therefore non-binding. We reserve the right to prior sale; Our terms and conditions of sale apply exclusively. About us More than 400 of our own machines in stock Over 15,000 m² of storage space, 70 t crane capacity More than 10,000 items and accessories for your workshop If you are interested in selling machines, production lines, or your business, please contact us. You can find further offers on our website. Tours are possible by appointment. We look forward to your visit. Hsdpfxsyqv Tms Am Tjr Your Markus Hirsch Team

Condition: refurbished (used), Year of construction: 2006, functionality: fully functional, machine/vehicle number: 119/020.0895, Manufacturing origin CH Voltage 400 V Netweight 4500 kg Custom position 8460.2320 Dimensions 2700x2350x2100 mm TECHNICAL DATA Control Fanuc 16i-T Center height 175 mm Distance between centers 1000 mm LINEAR AXES Grinding length 500 mm Strokes X : 267 mm Z : 650 mm WHEEL HEADSTOCK Continuous orientation +/- 8.5°. External grinding wheel size 500x80x203 mm Power 7.5 kW Speed 44 m/sec. WORKPIECE HEADSTOCK Taper type MT5 C-axis +/- 5 Power 1 kW Speed 30-1000 min-1 TAILSTOCK Taper type MT3 Sleeve stroke 35 mm Sleeve diameter Ø 50 mm Max. workpiece weight 130 kg POWER SUPPLY Voltage 400V 50 Hz errors and omissions excepted-data given without obligation Fully overhauled: Mechanics, geometry, hydraulics and electrical parts checked and/or replaced. Grinding headstock Disassembly, cleaning of parts, replacement of worn and defective parts, overhaul of motor, replacement of bearings, replacement of belts, disassembly of spindle, replacement of seals and O-Rings + adjustment. New paintwork. Headstock Dismantle, clean parts, replace worn and faulty parts, overhaul motor, replace belts. New spindle bearings. New paintwork. Tailstock Dismantled, checked and overhauled. Hydraulics Dismantle, check motor, replace hoses, defective and worn parts. Check hydraulic block X-axis Dismantle, replace worn parts such as O-Rings, seals, rings etc., overhaul hydraulic piston, grind tables. Z axis Dismantle, grind tables, replace worn and defective parts, overhaul hydraulic piston, new paintwork. Electrical cabinet Complete check, change various relays. Painting Colors: White RAL 9003 and gray RAL 7011 Geometry according to manufacturer's protocol. Hjdpfx Aslbgfcsm Tsr Inspection and cleaning of various accessories

Condition: used, Year of construction: 1988, Height of centers: 2, 050mm Max. turning diameter: 4, 000 mm Turning Lenght: 10, 000mm Max. load between centers 25 tons Hedpfodah E Aex Am Ter Max. load between centers with 2 steadies 40 tons Headstock travel 1 000 mm Main motor power 75 kW Spindle speed (3 ranges) 0, 5 - 100 RPM Spindel hole: 105 mm Tailstock diameter: 280 mm incl. faceplate 2, 000 mm incl. grinding attachment incl. 3 pcs steady rests (100-400, 250-600, 400-800) incl. 1 pc. open steady rest (400-1300) Total weight of the lathe: 110 tons Condition: very good

Condition: like new (used), MACHINE DATA TORNI TACCHI FTC model 51 OVERALL DIMENSIONS Center distance 4000 m/m Height 1550 m/m Width 1400 m/m Length 6200 m/m Weight 10.000 Kg Swing over bed 1120 m/m Swing over carriage 810 m/m Hedpfx Amed Tm D Ej Tor Swing over gap 1350 m/m Hole through spindle 123 m/m Number of speeds 18 Range of speeds 7-550 / 1’ Horsepower of motor 25HP Morse taper № 6 Metric threads – inch – module – pitch 3 jaw chuck 450 m/m Face plate 850 m/m Extra face plate 1420 m/m Good condition

Condition: new, Year of construction: 2025, pipe diameter (max.): 12,000 mm, travel distance X-axis: 12,000 mm, Equipment: cooling unit, safety light barrier, Three-chuck Heavy-duty Fiber Laser Tube Cutting Machine NS-12052HG 12000mm, 500 Chuck Servo drive is used for auxiliary feeding High-quality chuck Adaptive to different sizes of tubes Servo control, excellent performance Give the equipment ultra-high dynamic performance Hjdev D Uhfepfx Am Tjr Auxiliary feeding system Reduce work intensity and improve efficiency More types of processed tubes Support flying cutting High-precision Z-axis control Bevel cutting Highly automated ≤2m workpieces are unloaded through servo flaps

Condition: like new (used), DN Solutions PUMA DNT2600L 2024 Model – Only 32 Cutting Hours (Like New Condition) Hedpfjy D E Riox Am Tor Chuck: 12 inch Max Turning Diameter: 460 mm Max Turning Length: 1078 mm Spindle Bore: 81 mm Spindle Speed: 3,500 rpm Main Motor Power: 26 kW Max Torque: 735 Nm X-Axis Travel: 260 mm Z-Axis Travel: 1100 mm Rapid Traverse: X 24 m/min – Z 30 m/min Turret: 12 Stations Guideway System: Box Guideway Machine Weight: 4,900 kg Condition: 2024 model, only 32 cutting hours, almost in brand-new condition.

Condition: new, Year of construction: 2025, turning diameter over cross slide: 250 mm, turning length: 730 mm, turning diameter: 500 mm, spindle speed (max.): 1,800 rpm, CNC lathe machine CK 6150 with flat bed We offer a new CNC lathe machine model CK6150. We use this machine in our production and you can see it in operation before ordering. The CK 6150 lathe has a flat bed and hardening guides, which ensures a long period of operation of the equipment. The machine is equipped with a CNC system, the GSK CNC system is installed as standard. Optionally, the machine can be equipped with a Fanuc or Siemens CNC system. The machine can have a tool holder for 4-6 or 8 tools, depending on the customer's wishes. It is possible to install a hydraulic chuck on the machine, which will greatly simplify the process of installing parts on it and a hydraulic tailstock. The CK 6150 lathe can be equipped with additional supporting frame for more accurate manufacturing of long parts. Technical specifications: Model CK 6150 x 1000 Maximum workpiece diameter over bed 500 mm Maximum workpiece diameter over support 250 mm Maximum workpiece length 1000 mm Maximum turning length 730 mm Spindle bore diameter 82 mm Spindle speed 150-1800 rpm Engine power 7.5 kW Mechanical chuck (hydraulic optional) Chuck size 250 mm. 4-position tool holder (6 or 8 optional) Maximum tool size for tool holder 25x25 mm Machine weight 2700 kg Machine dimensions 2650×1700×1820 mm Hodsxdmgvopfx Am Tjr We can also supply lathes CK 6140, CK 6150 and CK 6160 with other dimensions of the working part: CK 6140 dimensions of the working part 550/750 mm CK 6150 dimensions of the working part 1000/1500/2000 mm CK 6160 dimensions of the working part 1000/1500/2000 mm CK 6152E dimensions of the working part 1000/1500/2000/3000 mm CK 6165E dimensions of the working part 1000/1500/2000/3000 mm CK 6165E dimensions of the working part 1000/1500/2000/3000 mm CK 6185E dimensions of the working part 1000/1500/2000/3000/4000 mm CK 61100E dimensions of the working part 1000/1500/2000/3000 mm CK 61125E dimensions of the working part 1000/1500/2000/3000 mm

Condition: excellent (used), Year of construction: 1984, functionality: fully functional, turning diameter over cross slide: 630 mm, spindle bore: 320 mm, turning diameter: 1,200 mm, turning diameter over bed slide: 930 mm, turning length: 3,000 mm, Lathe in very good technical condition, has seen very little use and was not used for machining pipes. The Poręba TPL 90/3m lathe (also listed in market nomenclature as a variant of the TPK 90 series) is a textbook example of an Oil Country Lathe / Hollow Spindle Lathe. This model fulfills all the specific criteria for machines intended for the Oil & Gas sector: • Massive spindle bore (Big Bore): This version features a spindle bore with a diameter of 320 mm (approx. 12.5 inches), allowing for easy insertion of thick-walled drill and casing pipes. • Dual chucking system: The headstock is designed for mounting two independent lathe chucks (front and rear, typically 28 inches in diameter), ensuring the pipe is clamped and stabilized at both ends of the spindle. Hedjy Sf Azopfx Am Ter • Optimal working dimensions: The 3m designation defines a turning length between centers of 3000 mm, which, combined with a swing over bed of 930 mm (hence the "90" in the name), allows for machining heavy-duty pipeline components. • Exceptional rigidity: FUM POREBA factory machines are renowned for their monolithic, very wide and heavy cast iron beds, which effectively dampen the immense vibrations generated during taper thread cutting. In international used machinery catalogues, this specific Poręba model is directly classified under the Oil Field Lathes category. TECHNICAL SPECIFICATIONS: Geometric parameters and machining ranges • Swing over bed: 930 mm / 36.6 in • Swing over cross slide: 630 mm / 24.8 in • Swing in gap: 1200 mm / 47.2 in • Maximum turning length between centers: 3000 mm / 120 in • Bed width: 585 mm / 23.0 in Headstock • Spindle bore diameter (Hollow Spindle): 320 mm / 12.6 in (in US nomenclature classified as a 12.5" version) • Spindle speed range: 5 – 250 rpm, or modified versions up to 710 rpm • Number of spindle speed steps: 18 Feed and thread cutting system • Longitudinal feed range: 0.1 – 12.8 mm/rev / 0.004 – 0.504 in/rev • Cross feed range: 0.05 – 6.4 mm/rev / 0.002 – 0.252 in/rev • Types of threads cut: Metric, Inch (Whitworth), Module, Diametral Pitch (DP) Tailstock • Tailstock quill diameter: 130 mm / 5.1 in • Tailstock quill travel: 300 mm / 11.8 in • Internal taper of quill: Morse No. 6 (MT6) Drive and dimensions • Main motor power: 22 kW / 29.5 HP • Overall length: approx. 5500 mm / 216.5 in • Overall width: approx. 1750 mm / 68.9 in • Overall height: approx. 1500 mm / 59.0 in • Total weight: approx. 8000 kg / 17,630 lbs

Condition: ready for operation (used), Year of construction: 2023, functionality: fully functional, turning length: 300 mm, turning diameter: 300 mm, spindle bore: 52 mm, spindle speed (max.): 4,500 rpm, controller model: FANUC CNC, The machine can be inspected with a lead time of three days. TECHNICAL DETAILS Maximum turning diameter: approx. 300 mm Maximum turning length: approx. 300 mm Spindle bore diameter: approx. 52 mm Maximum main spindle speed: 4,500 rpm Tool turret: 12 stations MACHINE DETAILS Control system: FANUC CNC Machine weight: approx. 2,200 kg Operating hours: approx. 6,458 h Spindle hours: approx. 4,300 h Hedpfx Amjznb Nts Tsr Voltage: AC 380 V (with or without transformer) Rated power: 14.97 kVA Full load current: 22.74 A Interrupting capacity: 5 kA Short-circuit capacity: 10 kA Power of the electric motor according to the manufacturer: 7.5 kW EQUIPMENT Technical documentation Powerful main spindle Robust machine construction for high dimensional accuracy Tool turret with rapid indexing Compact design with low space requirements User-friendly CNC control High reliability Low maintenance requirements Complete technical documentation

Year of construction: 2002, condition: ready for operation (used), functionality: fully functional, machine/vehicle number: 211 S, No minimum price – guaranteed sale to the highest bidder! TECHNICAL DETAILS Bar passage max.: 65 mm Diameter of front spindle bearing: 110 / 150 mm Collet clamping system: up to 60 mm HAINBUCH collet system: up to 65 mm Main spindle Spindle speed max.: 3,000 rpm Power of main spindle motor: 11 / 15 kW Main turret Number of tool positions: 8 Tool holder: VDI 30 Max. working stroke Z-axis: 50 mm Rapid traverse speed: 15 m/min Feed force: 6,790 N Additional sub-turret Number of tool positions: 8 Tool holder: VDI 20 Cross slide Number of horizontal slides: 2 Working stroke X1/X2 axis max.: 70 mm Working stroke Z1 axis max.: 230 mm Hodpfx Aozpximsm Tsr Feed force X1/X2 axis: 8,000 N at 50 bar Vertical slide Number of vertical slides: 2 Working stroke X3/X4 axis max.: 70 mm Manual length adjustment: 50 mm Rapid traverse speed: 15 m/min Feed force X1/X2 axis: 8,000 N at 50 bar MACHINE DETAILS Dimensions & Weight Machine height: 1,700 mm Footprint: 2,900 x 1,700 mm Machine weight: 4,100 kg

Condition: ready for operation (used), Year of construction: 1999, functionality: fully functional, machine/vehicle number: 142967, turning diameter over cross slide: 300 mm, spindle speed (max.): 5,000 rpm, rapid traverse X-axis: 30 m/min, feed rate X-axis: 5 m/min, controller model: Mazatrol PC Fusion CNC 640T, No minimum price – guaranteed sale to the highest bidder! TECHNICAL DETAILS Working area Maximum turning diameter: 300 mm Maximum swing diameter: 525 mm Maximum swing diameter over slide: 350 mm Maximum bar diameter: 51 mm Main spindle Speed range: 35 – 4,000 rpm Drive power: 15 kW Maximum torque: 350 Nm Spindle nose: A2-6 Spindle bore: 61 mm C-axis positioning: 0–360° / 0.001° Tailstock spindle Speed range: 35 – 5,000 rpm Drive power: 7.5 kW Maximum torque: 57 Nm Indexing: 72 positions / 5° Tool turret Hjdozpxgxspfx Am Ter Number of tool positions: 12 Configuration: Stationary and driven tools Turret indexing time to station 1: approx. 0.2 s Driven tools Drive power: 3.7 kW Maximum torque: 35 Nm Speed range: 25–4,500 rpm Travel ranges X-axis travel: 190 mm Z-axis travel: 575 mm B-axis travel: 585 mm Rapid traverse rates X-axis rapid traverse: 30 m/min Z-axis rapid traverse: 30 m/min B-axis rapid traverse: 18 m/min Feed ranges X/Z-axis feed: 0–5,000 mm/min C-axis feed: 1–2,000 rpm MACHINE DETAILS Control: Mazatrol PC Fusion CNC 640T EQUIPMENT Tailstock spindle

Condition: ready for operation (used), Year of construction: 2007, operating hours: 65,176 h, functionality: fully functional, machine/vehicle number: 02260007541, turning length: 600 mm, turning diameter: 680 mm, spindle speed (max.): 5,000 rpm, controller model: Siemens 840 D, power: 25 kW (33.99 HP), No minimum price – guaranteed sale to the highest bidder! Hodpjzpxgfofx Am Tor TECHNICAL DETAILS Turning length: 600 mm Turning diameter: 680 mm Maximum spindle speed: 5,000 rpm MACHINE DETAILS Control system: Siemens 840D Spindle power: 25 kW Spindle operating hours: 65,176 h EQUIPMENT Chip conveyor Self-centering chuck: 250 mm diameter