Used Knuth Eco-Mill 450 for sale (19,644)

Year of construction: 2007, condition: used, Colour: White Empty weight: 2.500 kg Dimensions (LxBxH): 170 x 210 x 230 cm - Year: 2007 - Documentation available: Yes - CE marking present: Yes - CE certificate present: No - Serial number: 750283 - Drive system: CNC - Control system brand: Siemens - Control system type: Sinumerik 802D - Power [kW]: 7.0 - Number of axes [pcs]: 3 - X-axis travel [mm]: 450 - Y-axis travel [mm]: 300 - Z-axis travel [mm]: 400 - Table length [mm]: 920 - Table width [mm]: 280 - Tool holder: ISO40 - Min. spindle speed [rpm]: 100 Dksdpfswnip Rex Al Aou - Max. spindle speed [rpm]: 8000 - Transport dimensions: 1700mm x 2100mm x 2300mm (l x w x h) - Transport weight [kg]: 2500kg - 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: good (used), Year of construction: 2019, functionality: fully functional, X.mill M640 Eco machining center with Si 808D Advanced TTL Table dimensions 750 x 360 mm Table load capacity 500 kg T-slots (number x width x spacing) 3 x 18 x 100 mm Distance from spindle nose to table 80 - 580 mm Travel ranges X / Y / Z: 640 / 400 / 500 mm Main spindle spindle speed 10,000 rpm Main spindle spindle overhang 430 mm Main spindle spindle taper BT 40 Rapid traverse X / Y / Z 36,000 / 36,000 / 24,000 mm/min Feed rate Working feed rate X / Y / Z 10 - 12,000 mm/min each Number of tool positions 12 Tool diameter 55 (101) mm Tool length (max.) 200 mm Tool weight (max.) 8 kg Tool change time chip to chip 9 s Tool change time tool to tool 7 s Positioning accuracy ± 0.01 mm Djdpfx Ajz Iw Naol Aoku Repeatability accuracy ± 0.005 mm Main drive 11 kW Main drive, constant load 7.5 kW Dimensions (L x W x H) approx. 2.3 x 1.8 x 2.3 m Weight 4,200 kg The machine can be inspected under power by arrangement.

Year of construction: 2013, condition: ready for operation (used), A Knuth CNC vertical milling machine is available. Travel X/Y/Z: 385mm/230mm/385mm, table dimensions X/Y: 800mm/240mm, max. table load: 100kg, reach: 300mm, speed: 3000rpm, rapid traverse: 6m/min, feed rate: 2m/min. Machine dimensions X/Y/Z: approx. 1850mm/1650mm/2000mm, weight: approx. 1500kg, control: Knuth GPlus 450. Documentation available. An on-site inspection is possible. Dkodpeyw Svlsfx Al Aeu

Condition: excellent (used), Year of construction: 2016, Machining center Dksdpfxstiauhs Al Aju Make KNUTH Type EcoMill 350 CNC

Condition: excellent (used), Knuth UFM 2 Universal Milling Machine Technical Specifications Travel X-axis (manual) 800 mm Travel X-axis 750 mm Travel Y-axis 300 mm Travel Z-axis 400 mm Table size 1320x320 mm T-slots 5x14x63 mm Dkjdpfx Aonfu Riel Aeu Feeds Y-axis travel (8) 20 - 360 mm/min Z-axis travel 600 mm/min Spindle speed (12) 58 - 1800 min-1 Vertical spindle taper SK 40 Distance between spindle nose and table 0 - 400 mm Head swivel 45° Taper of horizontal spindle SK 50 Drive Main motor power 4 kW Motor power in the Z-axis 0.75 kW Feed motor power 0.55 kW Coolant pump motor 0.09 kW Coolant pump capacity 25 l/min Dimensions and Weight Dimensions 1900x1720x1750 mm Weight 2100 kg You can find more new and used items in our shop! International shipping costs available upon request!

Condition: ready for operation (used), Year of construction: 2015, travel distance X-axis: 750 mm, controller manufacturer: SIEMENS, controller model: SLIMline, overall weight: 7,800 kg, spindle speed (max.): 12,000 rpm, number of axes: 5, This 5-axis DMG MU 70 ECO Mill was manufactured in 2015. It features a maximum spindle speed of 12,000 rpm and a robust integrated NC swivel rotary table. Weighing 7,800 kg, this machine is equipped with an external chip conveyor and a coolant/filtration tank unit. If you are looking to get high-quality machining capabilities, consider the DMG MU 70 ECO Mill vertical machining centre we have for sale. Contact us for further details. - Axis Travel: Standard ecoMill 70 specifications typically feature X = 750 mm, Y = 600 mm, Z = 520 mm- Maximum Spindle Speed: 12,000 max. 1/min (rpm)- Machine Weight: 7,800 kg- Apparent Power: 35 kVA- Maximum Current (In max): 55 A- Maximum Current (A max): 23 A- Short-Circuit Current: 63 A- Breaking Capacity: 0.6 kA- Operating Voltage: 400 V ±10% / 440 Vm- Auxiliary Voltage: 230 V ~ / 24 V =- Frequency: 50 Hz- Table Type: Integrated NC Swivel Rotary Table- Additional Equipment: External Chip Conveyor, Coolant / Filtration Tank Unit Dedpsz A Urnefx Al Asku

Condition: ready for operation (used), Year of construction: 2009, travel distance X-axis: 640 mm, travel distance Y-axis: 400 mm, travel distance Z-axis: 500 mm, spindle speed (max.): 8,000 rpm, spindle motor power: 16,400 W, number of axes: 3, This 3-axis KNUTH X.mill 640 CNC was manufactured in 2009. It features a total power of 16.4 kW and operates at 400 Volt with a frequency of 50 Hz across 3 phases. The machine is equipped with a new frequency inverter and a new braking resistor. If you are looking to get high-quality machining capabilities, consider the KNUTH X.mill 640 CNC vertical machining centre we have for sale. Contact us for further details. Djdpfxsz Ep N Hs Al Ajku - Voltage: 400 Volt- Frequency: 50 Hz / 3 Phases- Frequency Inverter: New- Braking Resistor: New- Manufacturer Error Description: Main spindle motor feels loose or offers resistance when turned manually (possible issue with belt, pulley, or top spindle mechanism). Main spindle motor encoder may require repair (sends positive signals only, negative signals required for proper positioning).

Condition: ready for operation (used), KNUTH GBF 30 / Drilling and Milling Machine -Digital display -Year of manufacture 1986 -Max. drilling capacity / steel 32mm -Speed range 100 - 2900 rpm Dkedpfezkrmbsx Al Aou -Speed stages 100/205/345/440/695/885/1450/2900 rpm -Cross slide with T-slots -Manual quill -Height-adjustable drilling head -Drilling/milling head can be swivelled -Drill chuck Dimensions: L x W x H 0.9 x 0.7 x 1.8 meters / 550 kg Errors and omissions excepted.

Condition: good (used), Year of construction: 2015, functionality: fully functional, Siemens 808D control system, Travel range XYZ = 500 mm x 300 mm x 300 mm, 12-position tool changer, Tool holder BT40, Spindle speed 8,000 rpm, Dedpfezuuk Djx Al Aeku Blum touch probe for zero point determination.

Condition: ready for operation (used), Year of construction: 2015, travel distance X-axis: 640 mm, travel distance Y-axis: 400 mm, travel distance Z-axis: 500 mm, controller manufacturer: SIEMENS, controller model: 828D, total height: 2,300 mm, total width: 1,800 mm, table width: 750 mm, table length: 360 mm, table load: 300 kg, overall weight: 4,200 kg, spindle speed (max.): 8,000 rpm, spindle motor power: 7,500 W, product length (max.): 2,300 mm, number of axes: 3, This 3-axis KNUTH X-Mill 640 was manufactured in 2015. It features a travel of 640 mm on the X-axis, 400 mm on the Y-axis, and 500 mm on the Z-axis. The machine is equipped with a Siemens 828D control unit and a 16-fold double-arm tool changer. If you are looking to get high-quality machining capabilities, consider the KNUTH X-Mill 640 vertical machining centre we have for sale. Contact us for further details. - Table Height from Floor: 850 mm- T-Slots (Number / Width / Distance): 3 / 18 mm / 100 mm- Spindle Speed: 60 - 8000 rpm- Distance Spindle to Vertical Guide Way: 430 mm- Main Motor Power: 7.5 / 11 kW- Total Power: 10.00 kW- Feed Rate: 5 - 5000 mm/min- Rapid Feed Rate: 15000 mm/min- Positioning Accuracy: 0.01 mm- Repeatability: 0.005 mm- Machine Weight: 2500 kg (Manual lifting specification) / 4200 kg- Operating Voltage: 400 V / 440 V, 3-Phase, 50/60 Hz- Operating Temperature: 0°C ~ 45°C- Pneumatic Operating Pressure: >= 0.6 MPa (6 kg/cm²)- Operating Setup Time: 186,488- Tool Changer: 16-fold double-arm tool changer- Standard & Included Accessories: Siemens 828D control, electronic handwheel, spiral chip conveyor, servo drives for all 3 axes, 16-position tool changer, pneumatic tool clamping, air conditioning, fully enclosed work area, work light, Ethernet, USB interface, sloping chip tray, automatic central lubrication, spindle oil cooling, operating tools, operating instructions, X.div CNC rotary table 170 mm with manual tailstock for Siemens control, 6" manual chuck for X.div, BT40/B16 and BT40/B18 drill chuck mounts, MAS BT40-ER40-80 collet chuck, 15-piece ER40 collet set (3-26 mm), BT40 combination mandrels (Ø22, Ø27, Ø32 mm), WELDON BT40 milling chucks (Ø6, Ø8, Ø10, Ø12, Ø16, Ø20 mm) Dksdezrnvujpfx Al Aou Technical Specification Taper Size BT 40

Condition: repair required (used), Year of construction: 2019, functionality: fully functional, In operational condition: MAXMILL NVM1166 - HISION VMU1100 - HISION V180 Dkodpey Iyw Sofx Al Asu

Condition: used, 10’-0” x 84” HARDINGE CONICAL BALL MILLS MILL SPECIFICATION Model : 10’-0” x 84” HCBM Overall Dimensions : 3050 mm diameter x 5185 mm long. Installed Power : 400 kW Absorbed Power : 320 kW Mill Speed : 20 rpm Dkedpfxozvgdlj Al Aeu Lining : Chrome Iron Cast Liner Plates Media : Steel Balls (30 tonne required) Drive : Girth Gear and Pinion, Gearbox and Slip Ring Motor Trunnion Bearings : No.1 Mill - Cooper Split Roller Bearings No.2 Mill – White Metal Bearings The mills were operated by British Chrome & Chemicals Ltd (later Elementis Chromium), at their site in Cleveland, UK, processing Chrome Ore to a fineness of 99% passing 45 µm. The first mill, with the white metal bearings, was installed in around 1970. The second mill, with the Cooper Split Roller Bearings was installed in 1980. This mill is offered with a new set of Cooper Trunnion Bearings. Both mills were in operation until the site closed in 2009 and have been in storage ever since. Equipment is offered in "as is" condition with no warranty given or implied. PPDS can offer full refurbishment services. Inspection is invited at our premises in Uttoxeter, Staffordshire, United Kingdom (close to East Midlands, Birmingham and Manchester airports). Powder Process Design Services Ltd has been supplying equipment and systems to the industrial minerals sector for over 20 years. We specialise in the design and supply of minerals processing systems using a combination of new and s/hand refurbished equipment. With approaching 40 years experience we aim to deliver projects that meet and indeed exceed expectations. We have satisfied customers throughout the world, including, the United States, South America, New Zealand, South Africa the Middle East and the UK and Ireland. Please check out our other listings and subscribe to our stock list.

Condition: ready for operation (used), Year of construction: 2015, travel distance X-axis: 640 mm, travel distance Y-axis: 400 mm, travel distance Z-axis: 500 mm, controller manufacturer: SIEMENS, controller model: 828, spindle speed (max.): 8,000 rpm, number of axes: 3, This 3-axis KNUTH XMILL 640 was manufactured in 2015. It features a Siemens 828 control, a spindle speed of 8,000 rpm, and a BT40 spindle taper. The table size is 750 × 360 mm, and it includes an 18-tool changer. If you are looking to get high-quality milling capabilities, consider the KNUTH XMILL 640 machine we have for sale. Contact us for more information. • Rotary axes: No • Tool changer: 18 tools Djdpezvu U Esfx Al Asku • Table size: 750 × 360 mm • Optical scales: No • Other options: 20 bar through-spindle coolant Technical Specification Taper Size BT 40

Condition: used, HARDINGE Conical Ball Mill Dksdpfx Aljzvgvnj Aeu 6’-0” dia x 36” ball mill for the dry grinding of industrial minerals. Mill fitted with Manganese steel liners for operation will steel ball grinding media. White Metal Bearings on trunnions. 90 kW Motor fitted (could be reduced to 75 kW). Mill with countershaft drive but could be converted to gearbox.

Condition: ready for operation (used), Year of construction: 2011, travel distance X-axis: 1,500 mm, travel distance Y-axis: 800 mm, travel distance Z-axis: 700 mm, total height: 3,067 mm, total width: 3,413 mm, table width: 800 mm, table length: 1,700 mm, table load: 1,500 kg, overall weight: 14,000 kg, spindle speed (max.): 8,000 rpm, spindle motor power: 18,500 W, product length (max.): 4,270 mm, number of axes: 3, This 3-axis KNUTH X-MILL 1500 CNC was manufactured in 2011. It features an impressive X-axis travel of 1500 mm, Y-axis travel of 800 mm, and Z-axis travel of 700 mm. The machine includes a robust table size of 1700 x 800 mm with a load capacity of 1500 kg. If you are looking to get high-quality machining capabilities, consider the KNUTH X-MILL 1500 CNC vertical machining centre we have for sale. Contact us for further details. - Number of T-slots: 5- T-slot Width: 22 mm- T-slot Spacing: 135 mm- Spindle Nose to Table Surface Distance: 170-870 mm- Throat Depth: 800 mm- Spindle Speed Range: 60-8000 rpm- Spindle Taper: MAS BT 50- X-axis Rapid Feed Rate: 15000 mm/min- Y-axis Rapid Feed Rate: 15000 mm/min- Z-axis Rapid Feed Rate: 10000 mm/min- Working Feed Rate: 5-5000 mm/min- Tool Changer Capacity: 24 positions- Positioning Accuracy: ±0.01 mm / ±0.00039"- Repeatability Accuracy: ±0.005 mm / ±0.0002"- Main Drive Motor Power (continuous / 30 min): 15 / 18.5 kW (15 / 25 Hp)- Total Power: 18.5 kW- Voltage: 400 Volt- Frequency: 50 Hz / 3 Phases Dkedpfoziaggjx Al Aou Technical Specification Taper Size BT 50

Condition: used, Year of construction: 2019, operating hours: 500 h, functionality: fully functional, input voltage: 400 V, input frequency: 50 Hz, Shredding/chipping machine Vecoplan VHZ 1300, hammer mills CPM, fan and cyclone filter JFK. The machine is in good condition and has only been in operation for approximately 500 hours. The line is complete with all conveyors. Dkedpfx Aljympx Uj Aju

Condition: used, Year of construction: 2006, API tube mill 355mm x14mm (A3801) is line to produce pipes for petrol industries so can be perfect solution for your company to grow up Dedpjv Hcwtsfx Al Aeku API tube mill (Made in China), Forming machine is made in Japan OD 114–355mm wall thcikness: 4-14.3mm steel grade: N80 tube length:6-15m standard: API 5CT N80 scope of supply: – slitting line; – tube mill; – two end facing machines; – two hydro testers; – 1 tube straightening machine, rolls (OD 114.3, 139.7, 219.1, 273.05, 323.9, 339.72 , 355.6mm) machine was made in 2006, stopped running in 2016. used seam annealer and HF welder, brand: Thermatool. Used slitter, Chinese brand. thickness: 4–14mm, N80, Q235, hot rolled steel. max coil width 1600–1700mm. 2+5 leveler DC motor: 55kw slitter DC motor: 160kw scope of supply: – coil car; – uncoiler (with 4 colums); – hold down roll; – peeler table; 2+5 leveler; – shear; – conveyor and loop; – guiding device; – slitter; – tension unit; – recoiler with support arm; – coil car; – approximate 12 slitting blades; – electric cabinet, hydraulic system. slitter is for tube mill

Condition: used, Year of construction: 2010, Milling machine, manufacturer Knuth, model UFM 3 Plus. Digital display, numerous accessories included. Dedpfoz Aff Uox Al Aoku

Condition: good (used), Year of construction: 2014, Knuth Sinus 330 x 1500 Knuth Sinus 330 x 1500 lathe, manufactured in 2014, in very good original condition. The machine comes from a special production run by a renowned German machine tool company. CE compliant!! Technical data: Year of manufacture: 2014 Knuth Sinus 330 x 1500 Working area: Workpiece length: 1,500 mm Turning diameter over bed: 660 mm Turning diameter over cross slide: 440 mm Turning diameter without bridge: 900 mm Bridge length: 320 mm Bed width: 400 mm Travel distances: Travel X-axis: 368 mm Travel Z1-axis: 230 mm Swivel range of top slide: 45° Main spindle: Spindle speed: 25 rpm - 1,600 rpm Spindle bore: 105 mm Spindle mounting: D1-8 Spindle taper: ø 113 mm / 1:20 Rapid traverse: Rapid traverse X-axis: 2,000 mm/min Rapid traverse Z-axis: 4,000 mm/min Tailstock: Tailstock spindle diameter: 90 mm Tailstock taper: 5 MK Tailstock quill stroke: 235 mm Tailstock cross slide: ± 12.5 mm Drive power: Motor power, main drive: 7.5 kW Dimensions and weights: Dimensions (L x W x H): 3.21 m x 1.23 m x 1.6 m Weight: 2,800 kg About the machine: The Sinus D is the largest series in the universal lathe segment. Conventional lathes like this are characterized by their robust design and high versatility. The design follows a classic design, but is based on a heavy, one-piece cast machine bed. As with heavy-duty lathes, the power transmission between motor and spindle is also achieved here via a manual lamellar clutch. With integrated functions such as the removable bed bridge, rapid traverse, and a taper turning device, this series offers optional solutions for machining long workpieces or large flanges. One-piece heavy cast bed with high stability Massive headstock with large spindle bearings Rapid traverse in 2 axes for fast positioning Taper turning attachment for additional applications Well-designed safety features Dkodpfx Aoz Irwfel Asu You can find more lathes from well-known manufacturers on our website.

Year of construction: 2017, condition: excellent (used), Control Siemens 828 D Travel X / Y / Z 850/550/550 mm Dkjdpfsft U S Njx Al Asu Spindle speed 8000 rpm Tool magazine for 24 tools BT40 Table size 950x550 mm

Condition: used, Year of construction: 2008, functionality: fully functional, machine/vehicle number: 146978, Knuth Surface Grinding Machine Flat HFS 2500C Working Area & Capacities Table dimensions: 250 x 500 mm Grinding area (max.): approx. 500 x 250 mm Maximum workpiece weight: 180 kg Distance spindle center to table surface: 450 mm Travel Distances & Feeds Longitudinal travel (X-axis): 560 mm Cross travel (Y-axis): 275 mm Hydraulic table feed (X): 7 – 23 m/min Rapid traverse cross (Y): 990 mm/min Rapid traverse vertical (Z): 460 mm/min Djdjy H Dg Iepfx Al Aoku Spindle & Grinding Wheel Grinding spindle motor power: 2.2 kW Grinding wheel dimensions: 200 x 20 x 31.75 mm Graduation: Y-axis 0.02 mm / Z-axis 0.005 mm Dimensions & Weight Machine dimensions (LxWxH): approx. 2650 x 2150 x 1675 mm Total weight: approx. 1800 kg

Condition: used, mileage: 600,000 km, power: 331 kW (450.03 HP), first registration: 03/2011, fuel type: diesel, axle configuration: 3 axles, color: white, gearing type: mechanical, emission class: euro5, Year of construction: 2011, LICENSE PLATE: EF528NC TITLE: IVECO STRALIS 450, SKIP LOADER, FRONT LEAF SPRING SUSPENSION AND REAR AIR SUSPENSION, WITH CRANE BEHIND CAB REF: 26C45 YEAR: 03/2011 HORSEPOWER: 450 ENGINE DISPLACEMENT: 10308 EURO EMISSION STANDARD: 5 KILOMETERS: 600000 TRANSMISSION: manual Dedsz Alylopfx Al Ajku DIFFERENTIAL LOCK: yes RETARDER/INTARDER: yes AXLES: 3 WHEELBASE: 4500 TOWING CAPACITY: yes ORIGIN: Italy CAB: short and low NUMBER OF SEATS: 2 PAYLOAD: 11440 kg - TRACTOR UNIT: 26000 kg at full load - TRACTOR UNIT + TRAILER: 44000 kg at full load BODY TYPE: skip loader SKIP LOADER MODEL: ATIB 26 TON TELESCOPIC EXTENSION: yes SWIVEL: no ROLLER: vertical ADR: yes BODY DIMENSIONS: FROM: 4.70 m + 0.20 m TO: 6.10 m + 0.20 m OVERALL LENGTH: 9.205 m OVERALL LENGTH WITH CONTAINER: 9.505 m ACCESSORIES: - Marchesi M10000RT 02.81 crane, serial number 0066.11 - Joystick - 6-blade grapple - Hoses for crane and auxiliary services - Front and rear clamps - Double pump - Automatic bell - Power socket for trailer REFURBISHED: no INSPECTION: 06/22/2026 TIRES: 50% PRICE: 47,500.00 € + VAT. Subject to errors and/or omissions. The prices shown do not include VAT. Please contact the sales representative for an updated price and conditions comparison. For more information: Loris: 3484773001 URL: #glispecialistidelloscarrabile AURORA SKIP LOADERS operates in the sale and purchase of industrial and commercial vehicles, specializing primarily in the waste management sector. Specialized in trucks, trailers, and skip loader equipment. With a stock of over 50 trucks and over 150 bodies, containers with and without cranes, ready for delivery. S.E.&O. Given the quantity of advertisements and details provided, Aurora invites you to verify the accuracy of the data with the sales staff.

Condition: used, Universal Tool Milling Machine ORADEA EURO-MILL STIMIN (Romania) Model FUS 32 Serial No. 5591 Year of construction: 2009 Travel: X: 560 mm, Y: 320 mm, Z: 400 mm Table size: 950 x 450 mm Tool holder (vertical head): ISO 40 - M16 Dkodpfox Hkd Hex Al Aeu Tool holder (horizontal spindle): ISO 40 - S20x2 (Deckel-compatible) Spindle speed: 25-2000 rpm, 18 steps Feed rate: 5-400 mm/min, 18 steps Rapid traverse: 1400 mm/min Main spindle motor power: 3 KW Electrical connection: 400 Volt, 50 Hz, 10 KW - 3-axis digital readout and linear glass scales by HEIDENHAIN, type ND 780 - Vertical milling head with quill, swivels +/- 90° - Quill travel at vertical head: 100 mm - Manual tool clamping with M16 thread - Counter bearing for horizontal milling with Ø 48 mm bearing bush - Central lubrication - Electrical control cabinet mounted on machine side - Coolant system integrated in machine base - Machine lamp - Including 2 tool holders - Operating manual with electrical diagram Required space (L x W x H): 1800 x 1600 x 1800 mm Weight: 1650 kg Very good condition

Condition: used, Year of construction: 2019, machine/vehicle number: 1799-260029, KNUTH KB 1400 Bed-Type Milling Machine The KNUTH KB 1400 is a robust and heavy-duty bed-type milling machine designed for machining large workpieces and demanding cutting tasks. The vertical milling head can be swiveled by ± 45°, allowing for milling operations at various angles. Technical Specifications: Djdszyy Rtjpfx Al Aeku Table clamping area: 1,400 × 400 mm Table travel X / Y: 800 / 400 mm X-axis travel (special version): 1,000 mm Spindle mount: ISO 50 Distance between spindle axis and table: 650 mm Overhang: 520 mm Spindle speed: 18 – 1,800 rpm Max. swivel angle of milling head: ± 45° Quill travel: 105 mm Feed rate: 18 – 627 mm/min, 9 steps Max. height adjustment speed: 1.67 m/min Main drive motor power: 7.5 kW Max. drilling capacity: 40 mm

Condition: like new (used), operating hours: 10 h, functionality: fully functional, Horizontal surface grinding machine KNUTH Dkodpfx Aszquawjl Aeu Type HFS 2550 n VC Table: 500 x 250 mm Grinding length: 560 mm Grinding width: 275 mm Distance between table and spindle axis: 450 mm Automatic feed Magnetic table Coolant system