Used Wmw Heckert Horizontal Machining Center 630 Mm for sale (102,649)

Condition: ready for operation (used), Year of construction: 2013, functionality: fully functional, travel distance X-axis: 900 mm, travel distance Y-axis: 800 mm, travel distance Z-axis: 900 mm, controller manufacturer: Siemens, controller model: 840D Solutionline, spindle speed (max.): 10,000 rpm, coolant supply: 70 bar, spindle nose: HSK63, number of spindles: 1, number of slots in tool magazine: 60, Equipment: chip conveyor, documentation/manual, Hüller Hille NBH500 Condition: Functionally refurbished by the professionals at GSN Maschinen-Anlagen-Service GmbH (Pallet changer, guideways and ball screw drive, measuring system) Spare parts, repairs, modifications, retrofits, relocation, commissioning, and much more – all from a single source. Dodozzqwgjpfx Akmowc Technical data and highlights: Pallet size: 500x500mm (Additional pallets available) Year of manufacture: 2013 Tool interface: HSK63 Control system: Siemens 840D Solutionline Main axes: X/Y/Z/B Spindle type: Motor spindle Spindle speed: 10,000 rpm Tool magazine: 60-position chain magazine Axis travels (X/Y/Z): 900/800/900mm Coolant: 600l coolant tank incl. chip conveyor Rotary table (B): NC type, 0.001mm Options: Renishaw measuring probe, work area extraction, internal coolant supply 60 bar, 6-position hydraulic clamping system on the setup station.

Condition: used, Year of construction: 2016, functionality: fully functional, machine/vehicle number: 2460062, Technical Specifications: # Machining Workspace: X 300 mm; Y 500 (725) mm; Z 375 mm # Axis Description: 3 Linear Axes (X, Y, Z) + 1 Rotational Table Axis (A-axis) with index divider head, equipped with direct angular measuring system, number of revolutions: 50 minˉ¹, accuracy +/- 5" Dsdpfx Akoxw Syusmowc # Maximum Clamping / Part Size: Ø 575 x 830 mm; maximum weight 360 kg # Rapid Traverse Rate: X/Y/Z: 65/75/75 m/min; Positioning Accuracy Tp: 0.008 mm # Distance Between Spindles: 300 mm # Spindle Speed: 1–17,500 rpm # Spindle Interface: DIN69893-HSK-A63 (with internal coolant supply) # Automatic Tool Changer: 2 x 32 tool positions, chip-to-chip average time: 2.5 sec # Max. Tool Dimensions: Ø75 mm / Maximum Length: 275 mm / Maximum Weight: 7.5 kg Electrical Specifications: # Voltage: 3x400V / 50Hz # Installed Power: approx. 85 kVA / 125A Dimensions: # Installation Footprint: approx. 3.6 x 6 x 3.7 m # Weight: approx. 10,500 kg Equipment Includes: # CNC Control: Siemens 840D SL # Linear Axis Measuring System: Heidenhain linear scales # Chip Conveyor: Knoll Type 550 K-1 # Oil Cooling System # High-Pressure Oil Filtration System (max 80 bar): Knoll VRF 450_2350 # Cooling System for Shaft, Guides, and Switchboard # 2 Oil Lubrication Units # Oil Vapor Extraction/Recovery System: IFS Vario E2000 (2,000 m³/h) # Fire Suppression System: Kraft & Bauer # Part Presence Detection: via low-pressure air sensors # In-Process Control: Marposs T25 # Tool Breakage Monitoring and Length Measurement: inductive sensor # Tool Holder Detection in Work Spindle Machine Condition: Operational

Condition: refurbished (used), Are you interested in this product or would you like more information? Please feel free to contact us. Additional photos can be provided upon request. The price is negotiable. For more parts and other materials, please also visit our website, CNC-Service. Do you have any questions or are you looking for something specific? Please feel free to contact us! Dwjdpfjzr If Aox Akmjc

Condition: used, Year of construction: 2008, Deckel Maho DMC 55H duoBlock Horizontal Machining Center Horizontal Machining Center – Deckel Maho Type / Model: DMC 55 H DuoBlock Year of Construction: 2008 Condition: Used Program Run Time: approx. 66,600 hours Spindle Run Time: approx. 46,500 hours Technical Data Travel Ranges X / Y / Z Axes: 560 mm / 600 mm / 600 mm Rapid Traverse (X/Y/Z): 40 m/min Work Table & Pallet Changer (APC) Number of Pallets: 2-position pallet changer Pallet Size: 400 mm x 400 mm Max. Workpiece Weight: 500 kg Max. Workpiece Height: 850 mm B-Axis (Rotary Table): 360° (designed as an NC rotary table, usually with 0.001° resolution) Main Spindle: 12,000 1/min; HSK 63; approx. 38 kW Tool Changer (ATC) Tool Magazine: 40 magazine positions Tool Interface: HSK-A63 Max. Tool Diameter: 80 mm (up to 160 mm with free neighboring positions) Dodpfx Ajzxc Ewskmowc Max. Tool Length: 330 mm Electrical Data Power Connection: 400V 3/N, PE 50Hz Power Consumption: 58 kVA Inrush Current: 84 A Max. Pre-Fuse: 100 A DC Control Voltage: 24 VDC AC Supply Voltage: 230 VAC Dimensions, Weight & Control Machine Weight: approx. 11,000 kg to 13,000 kg (depending on magazine size and chip conveyor) Footprint (L x W x H): approx. 5.0 x 3.0 x 2.8 m (pure space requirement without peripherals) Control: Siemens Sinumerik 840D Equipment NC rotary table Tool measurement system BLUM Oil mist separator IFE-2000 Hydraulic clamping system Proportional amplifier Signal light Coolant system 980 l Coolant gun Rotoclear Chip conveyor Master probe OMP60 Operating mode 4 Quotation item: Transport costs in a separate offer

Condition: excellent (used), Year of construction: 2004, operating hours: 19,000 h, functionality: fully functional, coolant supply: 40 bar, number of slots in tool magazine: 300, Equipment: documentation/manual, This machine was used solely for precision finishing and is in very good condition. Dwjdpfjz Hzymex Akmjc

Condition: used, Year of construction: 2015, functionality: fully functional, total height: 3,500 mm, total length: 5,900 mm, total width: 4,000 mm, SW Swabian Machine Tools BA W08-22 CNC control system: Siemens SINUMERIK 840 D sl Work area X-axis: 800 mm Y-axis (swiveling): 900 mm (1,200 mm) Z-axis: 660 mm Spindle distance, fixed (variable)*: 800 mm (799 mm - 851 mm) Workpiece clamping Swiveling table/counter bearing with helical gearing: swiveling time 0/180°: approx. 5.0 s A- and U-axes, prepared for mounting of clamping bridges, up to max.: Ø 950 mm x 1,830 mm Drive system: Torque motor Transport load: 2 x 800 kg Speed range A-, U-axes: 1 - 40 min-1 Working spindle HSK-A80 Speed range: 1 - 12,500 min-1 Acceleration time 0 - nmax: < 0.9 s Spindle bearing diameter: 90 mm Power / torque (10% duty cycle): 2 x 42 kW / 2 x 200 Nm (10% duty cycle) Feed drive Drive system: Linear motor Rapid traverse X / Y / Z: 120 m/min Axis acceleration X / Y / Z: 11 / 11 / 22 m/s2 Max. feed force X / Y / Z: 2 x 8,000 / 16,000 / 2 x 8,000 N Accuracy Position measurement: Direct, absolute Position tolerance X / Y / Z: Tp = ≤ 0.006 mm Repeatability R (ISO 230-2) ≤ 0.004 mm Tool magazine Tool changing system: Pick-Up Capacity: 2 x 42 (2 x 70 / 2 x 91 / 2 x 126)* Max. tool Ø: 85 / 200 mm (-o-) Max. tool length: 550 mm Max. tool weight: 12 / 18 kg Tool change chip-to-chip time: approx. 3.00 s Weight / Dimensions Machine weight: approx. 24,000 kg Transport dimensions W x H x D: 4.00 m x 3.5 m x 5.70 m Installation dimensions W x H x D: 5.35 m x 4.20 m x 8.20 m Connection power Operating voltage: 3 x 400 Volt, 50 Hz, TN-S/TN-C network Total connection power: approx. 152 kVA Djdpsz D Ey Eofx Akmjwc Average air consumption: 0.6 Nm³/min (5.5 bar) Several machines are available. The machines were integrated into an automated system. They were loaded by a robot system. They were connected to a central coolant system. Therefore, these machines do not have their own coolant system. Chips were also removed via a central disposal system.

Condition: used, Year of construction: 1996, functionality: limited functionality, travel distance X-axis: 630 mm, travel distance Y-axis: 600 mm, travel distance Z-axis: 650 mm, feed length X-axis: 630 mm, feed length Y-axis: 600 mm, feed length Z-axis: 650 mm, controller manufacturer: Fanuc, controller model: MSX-516, table width: 500 mm, table length: 500 mm, rotational speed (max.): 12,000 rpm, spindle speed (max.): 12,000 rpm, number of slots in tool magazine: 60, Equipment: chip conveyor, documentation/manual, We are offering this used MORI SEIKI SH-50 horizontal machining center, manufactured in 1996, for sale. Model designation: SH-50 Serial number: 450 The machine is currently powered and available for immediate delivery. • P8 power supply, valued at 1500, was renewed in August 2024. • The spindle was repaired in 2017 and has since been used primarily in a single-shift operation, as we mainly produce individual parts and small series. Therefore, the machine has spent most of its time in setup mode. • Machine: Mori Seiki SH50 milling machine Dwedjyt Nnpjpfx Akmoc • Control: Fanuc MSX-516 • Year of manufacture: 1996 • Configuration: Horizontal milling machine with indexing table • Tools: 60 (BT40) • Number of pallets: 2 (500mm * 500mm) • Travel: X 630mm, Y 600mm, Z 650mm • Spindle speed: 12,000 rpm • Chip conveyor Known defects: Rapid traverse of the X-axis has been reduced by 20% to extend the life of the telescopic covers. The sealing ring during pallet changes is likely damaged, resulting in oil leakage. We have temporarily resolved this by inserting a ball valve in between. We only need to open this when we change the pallets, which doesn't happen very often. The machine is sold as inspected, without any warranty or guarantee. Any liability for defects, including hidden defects, is excluded to the extent permitted by law. The magazine loses its reference point after being switched off for an extended period. The procedure for restoring it is known. If you have any questions or require further information, please send us a message or call us.

Condition: used, TECHNICAL DETAILS - Number of axes : 4 MILLING SPINDLE - Tool holder type : BT40 - Spindle power : 22 [kW] - Spindle speeds : 12.000 [rpm] LINEAR AXES - Travels on X/Y/Z axes : 560 x 560 x 560 [mm] - Rapid traverses rates (X/Y/Z) : 40.000 [mm/min] - Cutting feed rates (X/Y/Z) : 1 - 20.000 [mm/min] B ROTARY AXIS - Travel : 360 [°] - Indexing precision : 1 [°] TOOL CHANGER - Auto. Tool Changer type : Bras chargeur - Tool magazine capacity : 60 - Tool exchange time : 1,2 [sec] PALLET CHANGER - Pallet changing device type : Rotopalette - Pallet size : 400 x 400 [mm] - Pallets number : 2 - Maximum weight upon pallet : 400 [kg] - Distance table / spindle axis (min./max.) : 80 - 640 [mm] - Distance table center / spindle nose (min./max.) : 150 - 710 [mm] - Maximum workpiece diameter : 600 [mm] - Maximum workpiece height : 700 [mm] POWER SUPPLY - Supply voltage : 400 [V] WEIGHT & DIMENSIONS - Machine floor space : 3.600 x 3.750 [mm] - Machine height : 2.828 [mm] - Machine weight : 9.500 [kg] MACHINE HOURS - Number of hours under power : 9.893 [h] - Number of working hours : 2.138 [h] EQUIPMENT - CNC : Fanuc 18-iM Dwjdpfx Ajuhbv Ejkmoc - Electronic handwheel - Rigid tapping - Coolant tank * Coolant through spindle * With cabin washing - Chips conveyor - Spindle cooling unit

Condition: excellent (used), Year of construction: 2007, functionality: fully functional, travel distance X-axis: 900 mm, travel distance Y-axis: 800 mm, travel distance Z-axis: 980 mm, rapid traverse X-axis: 50 m/min, rapid traverse Y-axis: 50 m/min, rapid traverse Z-axis: 50 m/min, rotational speed (max.): 8,000 rpm, spindle nose: ISO 50, number of spindles: 240, CNC MSX 701 III Travels (X/Y/Z axes): 900 / 800 / 980 mm Pallet working surface: 630 x 630 mm Dwodoykpg Hepfx Akmoc Pallet load capacity: 1,200 kg High-torque spindle max speed: 8,000 rpm Rapid traverse rate (X, Y, Z): 50 m/min Tool magazine capacity: 240 tools Spindle motor power (30 min / continuous): 37 / 30 kW Machine Configuration: 240-position RACK tool magazine Spindle taper DIN 69871 – ISO 50 Tool breakage detection in magazine Index table with 1° indexing FASTEMS interface, model MLS-MD Spindle speed 8,000 rpm – 37/30 kW TOOL IC SYSTEM BALLUFF interface No. 600 macro variables No. 1 load monitor No. 200 storable programs No. 512 tool life management No. 999 tool offsets No. 48 workpiece coordinate systems Data server + ATA card Mori Seiki scraper-type chip conveyor with drum filter MARPOSS application, model MIDA T25G, with E86N radio transmission system META pumping unit, model M 50/50, partial filtration system, 50 bar high pressure COMET drilled pallet Instruction manuals and CE Declaration of Conformity

Condition: good (used), Year of construction: 2009, Horizontal machining center Machine type: DMG DMC 65 H duoBlock Control: Siemens 840D Solutionline Year: 2009 new spindle: 2026 SPECIFICATIONS Travel X-Axis: 700 mm Y-Axis: 700 mm Z-Axis: 700 mm Spindle speeds: 12.000 rpm Tool: CAT 40 Toolchanger Tool capacity: 45 Amount of paletts: 2 Palett size: 500 x 500 mm Equipment Chip conveyor Chip rinsing pistol Internal cooling: 40 bar Cooling tank: 960 l Caliper: Renishaw Tool setter: Blumlaser Dwodpfxezi Dz Io Akmjc 3D Quickset Electronical handwheel New in 2026 Spindle bearing Rotary union All pneumatic lines All oil and air filters All oils and fats Laser serviced Various wearing parts

Condition: good (used), Year of construction: 2007, Horizontal machining center OKK Rotopalette Type HM500 Year 2007 Dwodpfxozr Ik Sj Akmsc CNC Fanuc Series 310 IS-model Tool magazine with 60 tools Chip conveyor Approximately 26 tool holders with ISO 50 connection Tilting and forklift-compatible chip bin, GOUBARD Inspection points with shelves and lighting, fan Tool displays, double-sided (60) Buffer tank

Condition: good (used), Year of construction: 1999, Machine is used, in good condition. Dwedsz Arlzspfx Akmec Parts shown by hand not come.

Condition: good (used), Year of construction: 2007, Parts shown by hand not come. Dedpfxorpn Dvs Akmjwc Technical details shown on picture.

Condition: good (used), Year of construction: 1998, functionality: fully functional, travel distance X-axis: 710 mm, travel distance Y-axis: 610 mm, travel distance Z-axis: 660 mm, spindle speed (max.): 12,000 rpm, number of slots in tool magazine: 40, Equipment: chip conveyor, documentation/manual, Mazak FH-5800 – Horizontal Machining Center Dodpfx Aez Ehkpjkmowc Spindle cooling Max. 12,000 RPM Z = 660 millimeters X = 710 millimeters Y = 610 millimeters Tool magazine for 40 tools, newer control system – 2-pallet system.

Condition: excellent (used), Year of construction: 2011, operating hours: 5,203 h, functionality: fully functional, MORI SEIKI NH5000 DCG MACHINE DATA Manufacturer: MORI SEIKI Model: NH5000 DCG Year of Manufacture: 2011 Control System: FANUC 31iA / MAPPS Program Runtime: Only 5,203 hours TECHNICAL DATA Travel in X/Y/Z: 730 × 730 × 850 mm Spindle Speed: Up to 14,000 rpm Spindle Taper: HSK-A63 Automatic Tool Changer: 60 positions Feed Rate: 50 m/min Rapid Traverse: 50 m/min Dwsdpfx Asz Abwtokmoc B-axis Indexing: 360° Pallets: Two Pallet Size: 500 × 500 mm Max. Workpiece Dimensions: Ø800 × 1,000 mm Internal Coolant: 680 liters Chip Conveyor: Included in the scope of supply The machine is sold as a complete production unit, including tooling. Excellent, like-new condition Immediately available Inspection and test run possible

Condition: excellent (used), MATSUURA H. PLUS 300 is a Horizontal machining center with high precision, excellent accuracy and reliability. Travels X/Y/Z 500 mm; workpieces Ø 530 mm, h 700 mm; pallets 300×300 mm (10), max workpiece 250 kg, change 7 s. Spindle BT40 50–15,000 rpm, 95.4 Nm, 15/22 kW; feeds 1–50,000 mm/min, rapid 50 m/min; 3×380 V 50 Hz; weight ≈7000 kg; dims 3660×2463×2445 mm. Tool magazine 90 pos., tool change 2 s, chip-to-chip 2.9 s. Coolant 1500 l, chip conveyor, toolholder set, spindle oil cooler. Suited to tight tolerances in automotive, aerospace, medical, watchmaking and mould/die. Dedpfezqblyox Akmswc

Condition: used, Year of construction: 1996, x-travel 600 mm y-travel 560 mm z-travel 560 mm Control Siemens size of pallet 400x500 mm Table load 300 kg feed 40.000 m/min spindle speed: 20-8000 U/min spindle taper ISO 40 Spindle capacity 13/20 KW Torque 191 Nm 4-axis horizontal machining center. Dual pallet changer. B-axis table indexing 0.001°. B-axis rapid traverse 40 rpm. KNOLL coolant system with filter and chip conveyor. 40 bar coolant supply via collar. Good condition. 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. Dwsdpfx Akeyutu Aemec We look forward to your visit. Your Markus Hirsch Team

Condition: good (used), Year of construction: 2008, Ref. -No.: 10564 Manufacturer: TOYODA Type: FH 630 SX Year of construction: 2008 Type of control: CNC-Steuerung Control: Fanuc 31i - A Storage location: Halberstadt Country of origin: Japan Serial no.: NS2XXX X-Travel: 1000 mm Y-Travel: 800 mm Z-Travel: 850 mm B-Axis: 360 ° Max. Workpiece Weight: 800 kg Max. Tool Weight: 27 kg Max. Tool Length: 545 mm Max. Tool Diameter: Ø 120 mm Max. Size Of Workpiece Lxwxh: Ø 1000 x 1000 mm Tool Taper: BT - 50 Tool Piece Magazine With: 60 Pcs./pcs. Spindle Speed: 6000 RPM Machine length: 7000 mm Machine width: 3500 mm Weight Of The Machine Ca.: 20,1 t Further information: - Equipped with IKZ and chip conveyor - NC rotary table 360,000 * 0.001° Dwsdpjxvw Izofx Akmjc Machine can be inspected under power by arrangement.

Condition: good (used), Year of construction: 2002, Ref. -No.: 10633 Manufacturer: ANAYAK Type: VH Plus 2000-MG Year of construction: 2002 Type of control: CNC-Steuerung Control: Heidenhain Storage location: Halberstadt Dedpfx Aezc D Enokmswc Country of origin: Germany serial number: M200XXX X-Travel: 2000 mm Y-Travel: 1500 mm Z-Travel: 1500 mm No. Of Working Stations: 90 Control: 106.253 H machine: 93.170 H Program run: 41.859 H Head and turntable: 1600 x 1450 mm

Condition: used, Year of construction: 2002, x-travel 650 mm y-travel 650 mm z-travel 650 mm Control Siemens 840 D Dodpfezmy Tusx Akmewc weight of the machine ca. 12 t

Condition: excellent (used), Horizontal machining center OKK Rotary pallet system Type HM600 CNC Fanuc series 310IS-Model A Tilting and fork-liftable chip conveyor from GOUBARD Tool holders, double-sided (60) Coolant tank Dodpfjzr Ilvex Akmowc

Condition: used, Year of construction: 2017, x-travel 700 mm y-travel 700 mm z-travel 700 mm Control Siemens type 840Dsl Number of spindles 2 St. Double reversible clamp 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. Dwsdpfx Aoyquarskmoc We look forward to your visit. Your Markus Hirsch Team

Condition: excellent (used), Year of construction: 2004, Year 2004 With 8 station Fastem pallet loading system with tombs Tooling & manuals 12,000rpm Djdpfx Akezxr Twemewc 40 ATC DIN40 / Renishaw probing Pallet size 400mm x 400mm

Condition: used, Year of construction: 2017, Operating hours: 51,800 h Program run hours: 15,100 h Technical Data: Travel paths/axes X = 800 mm Y = 850 mm Z = 1,050 mm B = 360°, 0.001° Max. spindle speed: 12,000 rpm Total connected load: 77 kVA Required space, LxWxH: 9,000 x 5,500 x 4,000 mm Weight: 18,100 kg Equipment: Dwsdpfexqp Ivsx Akmec - Siemens 840D - Electronic handwheel - Heavy-duty machining package - Tool changer, rotary magazine with 180 places - Tool holder HSK 100 - Operator control panel - Internal coolant supply - Measurement and monitoring: Renishaw, infrared TDS, MPC

Condition: used, Year of construction: 2006, MORI SEIKI NV-5000 α 1A/40 4-AXIS MACHINING CENTER YEAR 2006 MODEL NV-5000α1A/40 CNC MSX-501 (MAPPS-M conversational) FEATURES 1. WORK AREA AND TRAVEL • X-axis travel: 800 mm • Y-axis travel: 510 mm • Z-axis travel: 510 mm • Distance between table surface and spindle nose: 150 - 660 mm 2. TABLE • Table size: 1,100 x 600 mm • Maximum load capacity: 1,000 kg • Configuration: 6 x 18 mm T-slots 3. SPINDLE • Spindle speed: 14,000 rpm • Spindle mount: MAS BT-40 (7/24 Taper No. 40) • Bearing inner diameter: 65 mm • Motor power (30 min/duty): 22 / 18.5 kW • Cooling: Chiller for spindle cooling included 4. FEED RATES AND ACCURACY • Rapid traverse rates: 42,000 mm/min • Jog feed rate: 0 - 1,260 mm/min • Positioning accuracy: 0.005 mm (over the entire travel) • Positioning repeatability: ± 0.001 mm 5. AUTOMATIC TOOL CHANGER (ATC) • Tool magazine capacity: 30 positions • Tool holder type: MAS BT-40 (90° pull stud) • Maximum tool diameter: 80 mm (125 mm with adjacent positions empty) Dsdoz Dv T Nspfx Akmewc • Maximum tool length: 300 mm • Maximum tool weight: 8 kg • Tool change time (chip-to-chip): 2.6 seconds (1.0 s from tool to tool) 6. CNC FEATURES (Mori Seiki MSX-501) • Monitor: 10.4" TFT color active matrix • Program memory: 320 m (63 programs can be stored) • Main functions: o LOOK-AHEAD (G08) for high-speed 2D profile control o Synchronous tapping (Rigid Tapping) o Helical interpolation o Load Monitor (cutting force management) o RS-232-C and PCMCIA interface standard 7. DIMENSIONS, WEIGHTS AND CONSUMPTIONS • Machine height: 2,603 mm • Installation area: 2,788 x 2,710 mm • Machine weight: 6,960 kg • Installed electrical power: 50.5 kVA • Coolant tank capacity: 275 liters 8. EQUIPMENT AND INCLUDED ACCESSORIES • Chip conveyor: Left-side conveyor • Coolant system: Coolant interface through the spindle (Type-B) with additional high-pressure pump (50 Atm) and dual filter • Cleaning system: Pneumatic • Signaling: Light and sound indicator for cycle end • Transformer: Included (380V/50Hz > 200V/60Hz) Machine complete with manuals, test certificates and CE declaration All technical data provided is indicative and may be subject to change without prior notice and therefore should not be considered binding.