Used Geibel & Hotz Fs 60 Ac for sale (30,928)

Condition: used, Year of construction: 2001, grinding length 600 mm grinding width 400 mm workpiece height 350 mm table-size 820 x 350 mm dist. center of grinding spindle - table 140-525 mm table movement 660 mm workpiece weight max. 400 kg diameter / bore of grinding wheel 350 x 50 x 76,2 mm table speeds 2-28 m/min power capacity - grinding motor 3,7 kW total power requirement 8 kW weight of the machine ca. 2100 kg Iijdpfx Aszi Ey Sskwjd dimensions of the machine ca. 4,5 x 3 x 2,4 m Geipel & Hotz FS 60 AC surface grinder, built in 2001, in good condition

Condition: used, Year of construction: 1998, Surface grinding machine Manufacturer: Geibel + Hotz Type: FS 40 AC Year of manufacture: 1998 Table length: 400 mm Table width: 200 mm Maximum workpiece weight on the table: 150 kg Iiodpfjwcym Asx Akwed Grinding wheel diameter: 225 mm Grinding wheel width: 25 mm Grinding wheel bore: 51 mm Machine weight approx.: 1,050 kg Machine dimensions L x W x H: 1,800 x 1,200 x 2,250 mm 3626

Condition: excellent (used), Year of construction: 2000, functionality: fully functional, grinding length: 700 mm, grinding width: 450 mm, NEW ARRIVAL 1 used hydraulic surface grinding machine GEIBEL & HOTZ FS 6040 The grinding area of the G & H FS 6040 is 600 x 450 mm - Year 2000 - Machine with automatic program cycle - rough grinding - finish grinding - spark out - return to starting position. Machine with 2-axis digital readout - stainless steel coolant system - various flanges - fine pole pitch magnetic chuck - including flanges suitable for Jung HF/JF 520. Iedpjvz A Dcsfx Akwsid Machine complete with operating manual and wiring diagram - fully tested for functionality. Very little used machine from a test department (original paint). Pricing: ex stock, unpacked, uninsured, domestic sales plus VAT. Delivery time: immediate - subject to prior sale. Payment: as per usual trade terms - before collection - immediately after receipt of invoice. Best regards, Induba GmbH Mathias Becker

Condition: used, Year of construction: 1998, grinding length 2000 mm Iisdov S Ip Ejpfx Akwed grinding width 600 mm total power requirement 17 kW weight of the machine ca. 10 t

Condition: excellent (used), Year of construction: 2008, functionality: fully functional, MAchine in very good condition. Grinding length 600 mm Grinding width 400 mm Grinding height 375 mm Table loading 600 kg Iodezlguvopfx Akwjid Axe X 10 - 650 mm Axe Y 140 - 525 mm Axe Z 400 mm Axe C - grinding spindle speed 1 000 - 3 180 rpm Grinding wheel (standard) 300 x 50 x 76,2 mm

Condition: used, Year of construction: 1998, grinding length 800 mm grinding width 500 mm workpiece height 425 mm total power requirement 15 kW weight of the machine ca. 4,5 t Q U O T A T I O N We are pleased to offer you ex our stock, subject to prior sale, and error in technical : GEIBEL & HOTZ CNC Cycle Controlled Precision Surface Grinding Machine model FS 850 GT SL year 1998 Serial no 1012580698 _____ Grinding length max. (table movement 900 mm) 800 mm Grinding width max. (cross movement 500 mm) 500 mm Mounting height under new grinding wheel 425 mm size of magnetic plate 800 x 500 mm Max. table load 1.100 kg Table speed 2 – 28 m/min Isdpfx Ast Hxamskweid Cross feed intermittend 3 – 60 mm/stroke Cross-/Vertical quick feed 4.000 mm/min Grinding wheel measurements 400 x 100 x 127 mm Grinding spindle-drive approx. 9 kW Total electrical load approx. 22 kW - 400 V - 50 Hz Weight approx. 4.500 kg Accessories / Special Features: • Dialog-guided GEIBEL & HOTZ automatic CNC cycle control model SL for 3 axes. Graphically supported data input in absolute dimensions or via teach-in procedures for preprogrammed grinding and dressing cycles. SIEMENS LCD display with softkeys for setting all parameters and easy monitoring axis movements and work progress. • Electronic handwheel for 3 axes X, Y, and Z, feed rate switchable from 0.01 / 0.1 / 1 mm/rev. • table movement is effected by a rolling ring thread drive (GT), which allows both very high and very low table speeds with constant torque and very high efficiency. • cross and vertical movements are effected by a ball screw drive with incremental glass scale. • Single-point diamond dresser mounted on the table for aut. dressing cycle and aut. compensation • MPM automatic grinding wheel balancing device. • Mounted electromagnet plate 800 x 500 mm with adjustable holding force • Wet grinding facility with universal fleece belt filtration unit • Complete enclosure of the working area with electronically safeguarded sliding doors • sep. switch cabinet, sep. mobile control panel, various accessories, manuals , etc. Condition : very good, with the wide grinding wheel for large surface grinding ! Please click here to view soon a video of the machine running : ! Delivery : immediately available, FCA Metzingen Payment : 100 % Net, after conclusion of contract, before loading We do always have a large selection of Grinding machines in stock – please let us know your requirements !

Condition: excellent (used), Year of construction: 1996, grinding length 600 mm grinding width 350 mm total power requirement 7,5 kW Q U O T A T I O N We are pleased to offer you ex our stock, subject to prior sale, and error in technical data : GEIBEL & HOTZ CNC horizontal surface & profile grinding machine model FS 635 - Z CNC year 1996 Grinding length max. (table movement 660 mm) 600 mm Grinding width max. (cross movement 360 mm) 350 mm Mounting height under new grinding wheel 375 mm Distance table – center of spindle min / max 140 – 525 mm Standard size of magnetic plate 600 x 350 mm Table size 820 x 350 mm Max. table load 400 kg Table speed 5 – 35.000 mm/min Cross movement, intermittently 3 – 40 mm Cross-/Vertical quick feed 5 m/min Grinding wheel measurements 300 x 50 x 76,2 mm Grinding spindle speeds, variable 1.000 – 3.000 rpm Grinding spindle-drive approx. 7,5 kW Total electrical load approx. 15 kW - 400 V - 50 Hz Weight approx. 2.600 kg Accessories / Special Features: • SIEMENS CNC control model 840 D with comprehensivel GEIBEL&HOTZ grinding software. User friendly interface, supported by dialog and graphics, simple programming also of complex grinding wheel profiling and easy linking of grinding cycles. • All standard grinding-programms and cycles as surface and multiple surfaces grinding with roughing-finishing-sparkout- return, plunge in grinding, automatic dressing cycle with compensation, etc. • electronic handwheel for 3 axis; cross feed (Z) and infeed (Y) effected by ball screw drive. • Table movement is actuated by belt drive (Z), which allows both very high and very low table speeds and is also ideal for profile grinding. • Hydraulically upwarding diamond dressing device mounted on the left side of the table (also for profile dressing); additional fixed dresser with automatic dressing cycle, including compensation. Iodpox Haryofx Akweid • Mounted sinus tilting magnetic plate 600 x 200 mm, fine pole division. • Separate paper band coolant filtration unit, separate switch cabinet, lamp for working area, various accessories, manuals, etc. Condition : very good, universal machine for all sorts of grinding tasks ! Please click here to view a video of the machine running : ! Delivery : immediately available, FCA Metzingen Payment : 100 % Net, after conclusion of contract, before loading We always have a large selection of surface grinders – CNC or conventional - available. Please let us know your requirements.

Condition: used, Year of construction: 2013, grinding length 800 mm grinding width 400 mm workpiece height 375 mm Control Siemens 840 D total power requirement 18 kW weight of the machine ca. 2,6 t Q U O T A T I O N We are pleased to offer you ex our stock, subject to prior sale, and error in technical data : GEIBEL & HOTZ CNC horizontal surface & profile grinding machine model FS 840 KT CNC year 2013 Serial no 38040513 _____ Grinding length max. (table movement 850mm) 800 mm Grinding width max. (cross movement 400mm) 450 mm Mounting height under new grinding wheel 375 mm Distance table – center of spindle min / max 140 – 525 mm Standard size of magnetic plate 800 x 400 mm Max. table load 700 kg Table speed 5 – 35.000 mm/min Cross-/Vertical quick feed 5 – 4.000 mm/min Grinding wheel measurements 300 x 50 x 76,2 mm (350 x 100 x 76,2) Cutting spped max. 45 m/s Grinding spindle-drive approx. 9 kW Total electrical load approx. 18 kW - 400 V - 50 cycles Iedpfx Aewd Tx Ijkwjid Weight approx. 2.600 kg Accessories / Special Features: • Machine is equipped with a simple to use but freely programmable SIEMENS CNC control model 840 D SolutionLine with additional GEIBEL&HOTZ grinding software. User friendly interface, supported by dialog and graphics, simple programming, also of complex grinding wheel profiling and easy connecting of all the usual grinding cycles. • electronic handwheel for 3 axis. • Table movement is actuated by ball screw drive (KT), which allows both very high and very low table speeds and is also ideal for profile grinding. • Cross feed (Z) and infeed (Y) effected by ball screw drive with incremental glass scale. • Diamond dressing device mounted on the left side of the table (also for profile dressing); additional driven diamond roller dressing device (table-mountable) with automatic dressing cycle, including compensation. • HOFMANN balancing device EasyBalancer EB3100 (with installed rpm & vibration sensor) • Unfortunately currently only a small magnet 110 x 200 mm available. • Separate band filter coolant filtration unit • Complete enclosure of the working area with electronically safeguarded sliding doors, separate switch cabinet, lamp for working area, various accessories, manuals, etc. Condition : very good, universal machine for all sorts of grinding tasks ! Please click here to view a video of the machine running : ! Delivery : immediately available, FCA Metzingen Payment : 100 % Net, after conclusion of contract, before loading We always have a large selection of surface grinders – CNC or conventional - available. Please let us know your requirements.

Condition: excellent (used), Year of construction: 2013, functionality: fully functional, WORK AREA Grinding surface: 400 x 210 mm Grinding area: 400 x 200 x 300 mm Table slot: 1 slot, 14 H7 Maximum table load: 150 kg X-AXIS = LONGITUDINAL MOVEMENT OF WORK TABLE Table longitudinal travel: 10 – 420 mm Table drive: hydraulic Table speed: 2–28 m/min Table speed adjustment: regulating valve Table positioning: directional push buttons Y-AXIS = VERTICAL MOVEMENT Distance from table to spindle center: 90 – 415 mm Vertical drive: electromechanical with ball screw Vertical speed: 100 – 1,000 mm/min Vertical adjustment: electric handwheel or directional push buttons Smallest increment: 0.001 mm Measuring system: motor measuring system Z-AXIS = LATERAL MOVEMENT Maximum lateral travel: 200 mm Drive type: electromechanical with ball screw Ijdezl Sk Aspfx Akweid Lateral speed: 100 – 1,000 mm/min Lateral travel adjustment: electric handwheel and directional push buttons Measuring system: motor measuring system C-AXIS = GRINDING SPINDLE Grinding spindle motor: 2.0 kW Grinding spindle speed: 1 – 2,800 min Grinding wheel, standard: 225 x 25 x 51 mm Spindle bearing: precision roller bearing Lubrication: lifetime lubrication

Condition: good (used), Year of construction: 2007, functionality: fully functional, CNC Precision Surface Grinding Machine Grinding area: 600 x 400 x 375 mm Grinding spindle motor: 3.7 kW Table drive: hydraulic Cross-axis drive: electromechanical Grinding wheel: 300 x 50 x 76.2 mm Peripheral speed: 10 - 32 m/s Electromagnetic plate: 600 x 400 mm with holding force control and automatic magnetic pole reversal for demagnetizing Features: Partially enclosed, open-topped loading compartment with a sliding door Cleaning kit for cleaning the work area with hand-held impulse nozzle Holder for prism arm with single-point diamond, MK 0 Grinding spindle speed control with V-constant controller Universal paper filter unit UPF 100, tank capacity approx. 280 liters Coolant pump: 20 liters/minute at 1.5 bar Isdeziligspfx Akwsid Machine light Without grinding wheels and flanges.

Condition: used, Year of construction: 2002, Technical details: grinding length: 1500 mm grinding width: 700 mm workpiece height: 580 mm table load capacity: 2380 kp table speed -stepless-: 5 - 35 m/min grinding wheel dia. x width: 500 x 100 x 203 mm grinding wheel motor: 18 kW speeds:: stufenlos elektronisch total power requirement: 35 kW weight of the machine ca.: 12 t dimensions of the machine ca.: 5,3 x 2,9 x 3,8 (3,18) m surface grinding machine, paper-filter, DRO 3 axis, automatic infeed, dwheel, full cabin Iiodpfoq Sbh Ujx Akwjd *

Condition: good (used), Surface grinding machine GEIBEL & HOTZ FS 40 Primus SA, No. 920287, clamping surface 400 x 200 mm Isdpfx Asunw Ilokwoid

Condition: excellent (used), Year of construction: 2005, machine/vehicle number: 1, grinding length: 1,000 mm, grinding width: 600 mm, Geibel & Hotz FS 1050 SD horizontal surface grinder Grinding area 1000 x 600 mm Fine pole pitch of the magnetic plate Many flanges and discs Large paper belt filter Adjustable feet Blade and circuit diagram Iedpev U Dfujfx Akwjid Balancing scale Machine was in use a maximum of 2 days a week - Not a standard machine Pricing: ex-works - unpacked - uninsured Delivery time: immediately - subject to prior sale Errors excepted - technical data is non-binding

Condition: used, Year of construction: 1999, grinding length 800 mm grinding width 400 mm workpiece height 375 mm Iisdpfx Ajtz Evkjkwsd table surface area 840 x 400 mm table speeds m/min spindle speeds (infinitely variable) 1000 - 3000 U/min grinding wheel motor 3,7 kW grinding wheel size 300 x 50 x 76,2 mm cross adjustment 100 - 1250 mm/min rapid traverse vertical 180 mm/min table load max. 700 kg distance spindle center to table max. 525 mm weight of the machine ca. 2,8 t dimensions of machine L x W x H 3,14 x 1,78 x 2,50 m Accessories: magnetic plate 800 x 400 mm, grinding wheel with flange, wheel dressing attachment, wet grinding attachment with paper band filter

Condition: good (used), 1 used surface grinding machine Manufacturer: Geibel und Hotz Iodpew Suyhefx Akwjid Model: FS 50 Optimus SA Technical data Design: Hydraulic Maximum distance between table and spindle center: 400 mm Longitudinal travel (X-axis): 580 mm Cross travel (Y-axis): 250 mm Table speed: Infinitely variable from: 2 m/min up to: 28 m/min Automatic vertical feed: Grinding wheel speed: from: 2800 rpm Connection 50 Hz 3-phase: 400 Volt Grinding spindle motor: 2.2 kW Total power requirement: 7 kW Machine weight approx.: 2000 kg Machine dimensions: Length: 1800 mm Width: 1200 mm Height: 2250 mm

Condition: reconditioned (used), Year of construction: 1995, Surface grinding machine Manufacturer: Geibel & Hotz Model: FS 40 Compact Year of manufacture: 1995 – partially overhauled, newly painted RAL 7035 light gray / RAL 7012 basalt gray Machine No. 9200895 with warranty Accessories: - Electro-magnetic clamping plate 400 x 200 mm (pole spacing: 5 mm) - Wet grinding system - Automatic vertical feed with digital display for vertical and transverse movement - Fine adjustment on the cross-slide handwheel - Grinding wheel with flange - Central lubrication system - Manual dresser with dressing diamond - Transverse speed control, stepless - Operating manual Iiedpfx Akod Rl Nqewed - used, as is -

Condition: good (used), Year of construction: 2001, grinding length: 650 mm, grinding width: 525 mm, total height: 350 mm, table length: 600 mm, table width: 350 mm, Manufacturer: Geibel & Hotz Type: FS 635-Z SA Control: Digital read out Year of construction: 2001 Magnetic table 600 x 350 mm Closed housing for CE Automatic vertical lubrication SA Automatic lubrication Coolant tank Specifications Metric US Standard X - axis 650 mm Iedjvdal Aspfx Akwoid Y - axis 525 mm Z - axis 350 mm Table length 600 mm Table width 350 mm Table load 400 Feed X - axis 35000 mm/min. Feed Z-axis 1000 mm/min. Grinding stone dimensions 300 x 50 x 76.2 mm Power output 3.7 kW Speed 2800 ? rpm Dimensions (estimate) length 3200 mm width 2000 mm height 2870 mm weight 2300 kg Please note: The information on this page has been obtained from the manufacturer to the best of our knowledge and belief, and where possible, the information is given in good faith but accuracy cannot be guaranteed. Accordingly, it does not constitute a representation or contract and we recommend that you check all relevant details.

Condition: good (used), Year of construction: 1999, functionality: fully functional, grinding length: 400 mm, grinding width: 200 mm, total height: 2,250 mm, total length: 2,000 mm, total width: 3,050 mm, grinding height: 300 mm, For sale is a CNC surface grinding machine of the brand Geibel + Hotz and type FS 415-Z SL The machine is ready for immediate use and fully functional Technical data Year of construction: 1999 Sanding range: 400*200*300 mm Operating voltage: 400/50 Hz/3 phases Control voltage: 2300/24 Volt Grinding spindle motor: 2 kW Table drive: electro-mechanical Cross-path drive: electro-mechanical Wheel bore: 51 mm Clamping width: min. 10/max. 30 mm Cone: larger D= 25 mm Mounting flange: Da= 108 mm Grinding wheel: 225*25*51 mm Clamping surface: 400*200 mm Dressing diamond: 0.75 carat Belt filter: Available Space requirement: 2000*3050*2250 mm On request, transportation and loading can be organized for an extra charge. Europe-wide can be organized. Prices plus VAT Viewing possible by appointment. Contact us, our team will be happy to help you. Trade-in or exchange possible! Iijdpfx Aouy Tkzskwsd Machines purchase / sale PURCHASE / SALE OF PRODUCTION & METALWORKING MACHINES AND MUCH MORE. Do you need a high-quality but inexpensive metalworking machine for your production? Or do you want to sell yours? For further information or contact options, please visit our website

Condition: used, functionality: limited functionality, machine/vehicle number: FS 40, total height: 420 mm, For sale is a Geibel and Hotz surface grinding machine The Z-axis feed has a problem, otherwise the machine is in good condition. Technical data: Iijdpfxjv E Hn Tj Akwsd Slide / X-axis: Table stroke max.: 420 mm Table stroke min.: 150 mm Number of table strokes/min at 400 mm stroke: max. 54 Total length with all covers: 420 mm Z-axis: 205 mm Cover: FS 40 Hanging plates, number: 2 Length: 1270 mm Cross spindle: Pitch: Tr. 30 x 3 Handwheel scaling: 1 turn = 3 mm Handwheel limit switch: P - U1ST Fine adjustment: 0.020 mm Lubrication Spindle nut: Flat track: good Dimensions: Total height (with spindle protection): 2250 mm Height without spindle protection: 1850 mm Table width: 600 mm Total width: 1720 mm Table depth: 1310 mm If requested, transport and loading can be organized throughout Europe for an additional charge. Prices plus VAT Viewings possible by appointment. Contact us, our team will be happy to help you. Trade-in or exchange possible! Machine purchase / sale PURCHASE / SALE OF PRODUCTION & METALWORKING MACHINES AND MUCH MORE. Do you need a high-quality but inexpensive metalworking machine for your production? Or do you want to sell yours? For further information or contact options, visit us on our website

Condition: used, Year of construction: 1989, Used, well-maintained GEIBEL+HOTZ surface grinding machine Model FS 50 SA Grinding area 500x250x375mm, Vertical automatic with fine-pole electro-magnetic chuck, Grinding wheel diameter 300x50x76.2mm, with paper band filter system, with manual dresser on top. various wheels and flanges Weight: approx. 2400 kg Space requirement approx. 2500x1800xHeight 2500mm Machine is located with us in 71334 Waiblingen-Beinstein and can of course also be inspected. Please contact us. Isdpfx Aowq Nc Nokwsid

Condition: ready for operation (used), Year of construction: 1999, functionality: fully functional, machine/vehicle number: 15360599, spindle speed (max.): 2,800 rpm, travel distance X-axis: 600 mm, travel distance Y-axis: 350 mm, travel distance Z-axis: 383 mm, disc diameter: 300 mm, TECHNICAL DETAILS X-axis travel: 600 mm Y-axis travel: 350 mm Z-axis travel: 383 mm Maximum grinding area: 600 x 350 mm Standard magnetic table size: 600 x 350 mm Grinding wheel diameter: 300 mm Spindle speed: 2,800 rpm Clamping surface: 820 × 350 mm Maximum table load: 400 kg Iiedpfx Akjxnwm Uewod Table speed: 0.005–35 m/min Rapid traverse (cross and vertical movement): 4,000 mm/min MACHINE DETAILS Control system: Siemens Electrical Data Operating voltage: 400 V, 3-phase Mains frequency: 50 Hz Machine weight: 2,200 kg EQUIPMENT - Coolant system - Automatic grinding wheel dresser

Condition: good (used), Year of construction: 1988, functionality: fully functional, Surface grinding machine Geibel&Hotz Type FS 40 Primus SA Condition: good Iodpfx Akoyh Hutswoid Fully functional

Condition: used, Year of construction: 2003, functionality: fully functional, Control system: Siemens Sinumerik 840D Includes: Grinding media preparation, hydraulic unit, and portal loading system for loading and unloading the machine. Technical data: Center distance: 600 mm, Center height: 180 mm Maximum grinding diameter: 355 mm Maximum workpiece weight: 150 kg Maximum Z-axis speed: 11 m/min Minimum Z-axis speed: 0.01 m/min Maximum X-axis speed: 7.5 m/min Minimum X-axis speed: 0.01 m/min External cylindrical grinding spindle: Grinding wheel standard (outer diameter x width x inner diameter): 600 x 80 x 304.8 mm Grinding wheel peripheral speed: 5 - 50 m/s Isdpfx Akjzh Ux Iswjid Power consumption of grinding spindle motor: 11 kW Workpiece spindle: Taper bore of workpiece spindle: MK 5 Power consumption: 2.7 kW Tailstock: Taper bore of center: MK 4 Coolant tank: 2000 liters, Lubricating oil: 30 liters, Hydraulic oil: 60 liters Operating voltage: 400 volts, 3 phases Mains frequency: 50 Hz Total machine weight: approx. 5800 kg Operating sound pressure level: 70 dB (A)

Condition: used, Year of construction: 2003, functionality: fully functional, Siemens Sinumerik 840D control system includes: grinding media preparation, hydraulic unit, and portal loading system for loading and unloading the machine Technical data: Center distance: 600 mm, center height: 180 mm maximum grinding diameter: 355 mm maximum workpiece weight: 150 kg maximum Z-axis speed: 11 m/min minimum Z-axis speed: 0.01 m/min maximum X-axis speed: 7.5 m/min minimum X-axis speed: 0.01 m/min External cylindrical grinding spindle: Grinding wheel standard (outer diameter x width x inner diameter): 600 x 80 x 304.8 mm Grinding wheel peripheral speed: 5 - 50 m/s Power consumption of grinding spindle motor: 11 kW Workpiece spindle: Taper bore of workpiece spindle stock: MK 5 Power consumption: 2.7 kW Ijdpfszh Uwqox Akwoid Tailstock: Taper bore of center: MK 4 Coolant tank: 2000 liters, lubricating oil: 30 liters, hydraulic oil: 60 liters Operating voltage: 400 volts, 3 phases Mains frequency: 50 Hz Total machine weight: approx. 5800 kg Operating sound pressure level: 70 dB (A)

Condition: used, Year of construction: 2001, functionality: fully functional, Control system: Siemens Sinumerik 840D Includes: Grinding media preparation, hydraulic unit, and portal loading system for loading and unloading the machine. Technical data: Center distance: 600 mm, Center height: 180 mm Maximum grinding diameter: 355 mm Maximum workpiece weight: 150 kg Maximum Z-axis speed: 11 m/min Minimum Z-axis speed: 0.01 m/min Maximum X-axis speed: 7.5 m/min Minimum X-axis speed: 0.01 m/min External cylindrical grinding spindle: Grinding wheel standard (outer diameter x width x inner diameter): 600 x 80 x 304.8 mm Grinding wheel peripheral speed: 5 - 50 m/s Power consumption of grinding spindle motor: 11 kW Workpiece spindle: Taper bore of workpiece spindle: MK 5 Power consumption: 2.7 kW Tailstock: Taper bore of center: MK 4 Isdpfx Ajzh Uvtjkwoid Coolant tank: 2000 liters, Lubricating oil: 30 liters, Hydraulic oil: 60 liters Operating voltage: 400 volts, 3 phases Mains frequency: 50 Hz Total machine weight: approx. 5800 kg Operating sound pressure level: 70 dB (A)