Used Kapp Hob Grinding Machine for sale (65,031)

Condition: excellent (used), Year of construction: 1979, Kapp AST‑305B – Technical Specifications Machine type: automatic hob and gear cutter sharpening machine Year of manufacture: circa 1979 Machine function: resharpening of hobs, spiral or straight gash cutters; wet or dry grinding Maximum tool diameter capacity: 12 inches (300 mm) Maximum tool length between centers: 27 inches (700 mm) Maximum table traverse: 21.56 inches (550 mm) Maximum grinding wheel diameter: 12 inches (300 mm) Maximum center height: 6.1 inches (155 mm) Table speed (infinitely variable): – deep grinding: 30 to 1000 mm/min – surface grinding: 3 to 16 mm/min Flute lead angle range: 0° to 45° Flute lead range: selectable, up to 24‑inch to zero or 12‑inch to zero Grinding spindle speed: 2200 rpm (optional 1000–4000 rpm) Axial grinding spindle adjustment: 16.54 inches (420 mm) Lrjdpfx Aiewwkt Asisn Vertical grinding head adjustment: 11.81 inches (300 mm) Spindle taper: Morse 4 or steep taper 40 Preselectable single in-feed: range 0 to 9999 (units) Machine dimensions: length 118 in × depth 82 in × height 93 in (≈3000 × 2080 × 2360 mm) Machine weight: approximately 7,500 lbs (3,000 kg) Control system: originally manual/analog, often upgraded with Allen‑Bradley PLC

Condition: good (used), Year of construction: 2015, operating hours: 250 h, functionality: fully functional, For Sale: Guideway Grinding Machine (Retrofitted from Metal Planing Machine) We offer a robust guideway grinding machine, which has been professionally converted from an original metal planing machine. The main advantage lies in its relatively compact footprint in relation to the workpiece capacity. Lrsdpfexx Uudex Aiion Technical Specifications: • External dimensions (LxWxH): 4,800 x 2,500 x 2,000 mm • Required floor space: 4,800 x 3,500 x 2,700 mm (+ control cabinet, coolant tank, access) • Table size: 2,000 x 800 mm • Distance between columns: 1,000 mm • Travel paths (X/Y/Z): 2,000 / 1,000 / 600 mm Upgrades & Features: • New ball screw spindles and bearings • 2 new motors + 2 overhauled motors • 3 new frequency inverters • New Siemens SINUMERIK 802C baseline CNC system • Large grinding spindle: 2,840 rpm – refurbished + new motor • Small grinding spindle: 18,000 rpm – refurbished • Including control cabinet, coolant tank with pump, and separate, wall-mounted inverter for small spindle Inspection and trial run possible by appointment. Please contact us for more information.

Condition: ready for operation (used), Year of construction: 2004, functionality: fully functional, machine/vehicle number: 665100, overall weight: 4,700 kg, center height: 125 mm, Round grinding machine with robot! TECHNICAL DETAILS Center height: 125 mm MACHINE DETAILS Control: Fanuc 18i-T Total weight: 4,700 kg Operating hours Automatic cycle time (according to diagram): 41,411 h Feed time (according to diagram): 14,251 h EQUIPMENT Lredpfxszcwfus Aiisn Universal Robots UR5 robot Standard accessories 1 grinding wheel set, right-hand, 500 x 110 x 203.2 mm 1 manual swivel chuck for turning parts with manual indexing every 2.5 degrees Automatic balancing device MARPOSS type E 82 Hydraulic quill retraction for the tailstock Stroke monitoring for the tailstock Standard workpiece spindle MK 5 DIN 55026 size 5”

Condition: ready for operation (used), Year of construction: 1989, functionality: fully functional, machine/vehicle number: 32.469.3143, center height: 125 mm, grinding length: 1,000 mm, The machine underwent a partial overhaul in 2009. TECHNICAL DETAILS Maximum height: 125 mm Maximum width: 1,000 mm EQUIPMENT Automatic working cycle Intermediate plates 50 mm for a maximum height of 175 mm Vibration-damping pads Machine light Internal grinding device for a maximum diameter of 70 mm Internal grinding spindle UJ7P Coolant supply through the workpiece spindle, including protective cover Side and angled dressing device Ledpfx Ajzcwfnoiijrn Swiveling dressing device for internal grinding Dressing stop for internal grinding Collet chuck Set of collets Dial indicator stop for table swiveling with a 1/100 mm dial indicator Sine bar Table fixed stop Strip-type filter system SONY digital measuring system, 2 axes Documentation

Condition: ready for operation (used), Year of construction: 1972, functionality: fully functional, grinding length: 4,000 mm, grinding width: 500 mm, spindle speed (max.): 1,400 rpm, overall weight: 11,000 kg, TECHNICAL DETAILS Max. grinding length: 4,000 mm Max. grinding width: 500 mm Max. distance between table and spindle center: 900 mm Table speed: 3 - 25 m/min Spindle speed: 1,400 rpm Grinding spindle motor: 11 kW Lredpfozd Rqlsx Aiion MACHINE DETAILS Weight: approx. 11 tons EQUIPMENT Including complete electrical system Permanent magnet table Cast iron bed (overhauled in 2011) New hydraulics and digital Z-axis Swiveling spindle

Condition: used, Year of construction: 1996, functionality: fully functional, machine/vehicle number: 804, We offer this used Sumitomo NPG-2×1000 gear grinding machine, year of manufacture 1996. Model: NPG-2×1000 Serial number: 804 Manufacturing year: 1996 Manufacturing month: 7 month Ljdpezgqzcefx Aiijrn If you have any questions or need more information, feel free to send us a message or give us a call.

Condition: good (used), Year of construction: 1972, Slideway grinding machine WMW SFBZ 2200/6000 Lredpew U A Rmsfx Aiion Manufactured by WMW Germany in 1972 Main technical data: Table size: 2240x6000 mm Max. grinding width: 2200 mm Max. grinding length: 6000 mm Max. grinding height: 2000 mm Max. workpiece weight: 15000 kg Machine weight: 130 tons The machine underwent a general overhaul in 2022. The feed boxes with electromagnetic couplings were replaced with motors and gearboxes for both heads. The bearings for the universal grinding head were also replaced. For more information, please contact us.

Condition: good (used), Year of construction: 2003, Ref. -No.: 10618 Manufacturer: KELLENBERGER Type: 600 U Nr. 33 Year of construction: 2003 Type of control: Konventionell Control: n/a Storage location: Halberstadt Country of origin: Switzerland Distance between center: 600 mm Center height (standard): 125 mm Height of centers by lifting work blocks head and tailstock: 175 - 250 mm Swing diameter with lifting blocks max.: 350 - 500 mm Table swivel / each side: 10 ° Dwell time of the table reversal: 0 - 5 Sec Diameter / width / hole: 250 x 13 x 76 mm Speeds of the grinding wheel spindle: 1500 / 1700 / 2200 / 3600 Swiveling grinding wheel head: 360 ° Cross movement of the grinding wheel head: 285 mm Quickly pulling the wheel head back and forth: 40 mm Intermittent injection for each reversal of the table: 0,001 - 0,03 mm / dia Micro-corrector of the feed, 1 division of the dial: 0,001 mm / Ø Working speeds continuously adjustable (normal / special): 20-400 / 10-400 Max. Grinding length: 900 mm Lrodpfx Ajya Dagoiien Further information: The machine can be viewed while powered up.

Condition: good (used), Year of construction: 1990, Ref. -No.: 10301 Manufacturer: TITAN Type: RU 350 x 1-1500 Year of construction: 1990 Type of control: Konventionell Storage location: Halberstadt Country of origin: USA Max. Grinding length: 1.500 mm Max. Workpiece Weight: 300 kg Grinding Diameter: 350 mm Max. Dia. Of Grinding Wheel: 280-500 mm Lodpfxsycpv Se Aiiorn Grinding Wheel Width: 80-100 mm

Condition: used, Year of construction: 1998, machine/vehicle number: ECO6828/60-01, Machine control ASYST MS 400-, grinding wheel diameter 250 mm, max. grinding length approx. 1000 mm, with coolant device, fleece filter system and extraction unit. Lodpey Sqh Aofx Aiiern

Condition: used, Year of construction: 2004, machine/vehicle number: 7202, CNC control FANUC POWER MATE, workpiece conveyor belt, fleece filter system, and HYFRA cooling system Lrsdpoy Sqhvefx Aiijn

Year of construction: 1989, condition: used, machine/vehicle number: 73903, comprising: KOENIG & BAUER rough grinding machine, year 1977, serial no. 73903 and KOENIG & BAUER finish grinding machine, year 1989, serial no. 720500007, with electric workpiece feeding and loading system, BEKA UPE central lubrication system Ledey Sqh Nspfx Aiisrn

Condition: used, Grinding wheel diameter 300 mm, max. grinding length approx. 600 mm, with coolant system and KNOLL fleece filter unit Lredpjy Sqkkefx Aiien

Condition: used, Year of construction: 1992, grinding length 0800 mm grinding width 500 mm workpiece height 400 mm table-size 800 x 400 mm table speeds 1 - 25 m/min cross feed autom. 0 - 60 mm/Hub Lsdpfswgnz Aex Aiisrn grinding wheel size 400 x 100 x 127 mm grinding spindle speed 1400/2800 U/min total power requirement 10 kW voltage 380 V weight of the machine ca. 6 t Machine has cooling arrangement, auto. vert. feed, dressing arrangement and wheel flanges. Control doesn't work continuesly !!

Condition: used, Year of construction: 1997, Technical details: max. module: 7 weight of the machine ca.: 5 t worm grinding diameter: 280-350 mm width of grinding worm: 84-104 mm min. number of teeth: 6 max. number of teeth: 600 max. top circle diameter: 360 mm max. workpiece weight: 60 kg Lsdpfx Aiox Aq Egsisrn without filter *

Condition: used, Year of construction: 1998, Technical details: max. module: 7 weight of the machine ca.: 5 t worm grinding diameter: 280-350 mm width of grinding worm: 84-104 mm Lrjdpszgw I Njfx Aiisn min. number of teeth: 6 max. number of teeth: 600 max. top circle diameter: 360 mm max. workpiece weight: 60 kg with Turbo Separator, loading unit, latest-generation balancing and dressing unit and various accessories *

Condition: used, Year of construction: 2009, CNC series 245 A 3l T R DH, control system, manufacturer: Siemens, type: Sinumerik 840D SL, 2 spindle units (1x external type WMZ; 3x internal, manufacturer: GMN, type HSX 150-24.000/23 with tool holder HSK 63; grinding spindle turret), 2 cross slides, 2x C-axis, 2x magnetic chucks Ø 800 mm, workpiece Ø max. 1,000 mm, workpiece length max. 400 mm, spindle speeds max. 1,000 rpm, table travel X1/X2 axis 885 mm, table travel Z1/Z2 axis 1,000 mm, 4 table levelers, electronic balancing system MPM, coolant system, manufacturer: Liqui, type KSS system MTBF V500, MW250, capacity 1,900 l, band filter, temperature control, manufacturer: Hyfra, chip conveyor, switchgear and control cabinets, platform, table system, 5-piece, 3 drawer cabinets, 5 drawers, contents: setup tools, machine accessories. Lrodpfxozgvlyo Aiion

Condition: used, Year of construction: 1991, Used machine Used profile sanding machine of the company Arminius type ST 10 Lrsdsw I Unkspfx Aiisn Year of construction: 1991 MNo.: 0-290-02-1567 Engine power: 1.1 kW Spindle adjustment: 0° - 135° Table surface: 1000 x 800 mm without visible objects on the table surface Availability: short term Location: Röllbach

Condition: used, Year of construction: 2014, functionality: fully functional, grinding length: 600 mm, grinding width: 300 mm, Main machine data: - Table size (W x L): 600 x 300 mm - Electro-magnetic chuck: 300 x 600 x 70 mm - Grinding wheel size: 355 x 25 x 127 mm Lsdpfsyyymwex Aiijrn Drive performance: - Spindle motor: 2.2 kW Machine dimensions: Dimensions: - Length: 2,300 mm - Depth / Width: 1,550 mm - Height: 1,950 mm - Machine weight: 1,650 kg Standard equipment: - CNC-controlled vertical feed AD1 - Electro-magnetic chuck - Automatic demagnetizing device - Electronic cross-feed adjustment via operator panel - Coolant system with extraction, paper filter, and magnetic separator - Parallel dressing device (head-mounted) - Dressing device for table mounting - Motorized rapid traverse adjustment (vertical) - Grinding wheel flange - Grinding wheel - Halogen lighting - Balancing arbor - Balancing scale - 1 set of splash guards Incl. 3 grinding wheel flanges Incl. fine-pole electro-magnetic chuck 300 x 600 mm Pole pitch: 3 mm, pole width: 1 mm Instead of standard electro-magnetic chuck

Condition: used, Year of construction: 1969, max. wheel diameter 160 mm gear width 355 mm max. module 4,5 min. module 0,5 centre distance 450 mm total power requirement 11 kW weight of the machine ca. 3,8 t dimensions of the machine ca. 2x17,1,6 m Wheel diameter - max. 160.175 mm Wheel width 355 mm Module - max. 4.5 Ljdpfxjvz Ec Ie Aiisrn Spindle bore 75 mm Center distance 410 mm Number of teeth - min. 2, 3 Cutter diameter max. 115 mm Cutter length max. 105 mm Center distance between milling cutter and workpiece - max. 138 mm Center distance between milling cutter and workpiece - min. 30 mm Milling head - swivels 120 ° Milling cutter speeds 70 - 400 rpm Axial feeds 0.25 - 4.0 mm/rev Radial feeds 0.09 - 1.5 mm/rev Total power requirement approx. 9.5 kW Machine weight approx. 3.5 t Space requirement approx. 1730x1400x1440 mm Equipment/accessories: - Changing wheels - milling arbors - Clamping device Dra8M7 - documentation

Condition: good (used), Year of construction: 2021, operating hours: 5,500 h, grinding length: 600 mm, grinding diameter: 440 mm, feed length X-axis: 325 mm, feed length Z-axis: 750 mm, Control system, serial number and main data o Control system: SIEMENS, Type 840 D SL o Operating hours recorded: 5,475 Travel ranges o X-axis travel: 325 mm o Z-axis travel: 750 mm Axis speeds o X and Z axes max.: 15,000 mm/min o X and Z axes min.: 0.01 mm/min Working area o Max. grinding length: 600 mm o Max. grinding diameter: 440 mm o Min. grinding diameter: 10 mm Performance data o Grinding spindle: 1 tool for external cylindrical grinding o Tool dimensions: Ø 610 x 160 x 304.8 mm Lsdpfx Aezgdtloiiern o Cutting speed: 60 m/s o Power: 15 kW Workpiece spindle o Speed range: 30 - 5,000 min⁻¹ o Taper: 5 Morse Tailstock o Design: pneumatic o Max. quill stroke: 80 mm o Taper: 5 Morse Connection values o 400 V / 50 Hz / 71 A / 43 kW Automation / Peripherals • Handling robot, YASKAWA, Type YR-1-06VXH12-A00, year of manufacture 2022, serial number 6V2272528290001 • Automation system / workpiece storage, EGS AUTOMATION DANOBAT, Type CG600-BL1, year of manufacture 2023, serial number 190605-6, 2-position • Filter, 3FS, Type M1600, No. 565209, year of manufacture 2021, weight 85 kg • Oil band filter, MICROFILTER, Type EASYBAND 150, serial number 0202, year of manufacture 2021 • Pump, REXROTH, Type HM-46

Condition: not inspected (used), Year of construction: 2023, operating hours: 1,400 h, machine/vehicle number: 180073, grinding depth: 100 mm, grinding length: 100 mm, overall weight: 5,000 kg, grinding diameter: 100 mm, workpiece diameter (max.): 215 mm, feed length X-axis: 400 mm, feed length Z-axis: 200 mm, j.stumpf [at] ivg.auction Control system, monitoring, and key data o Control system: SIEMENS, type SINUMERIK 840 D SL o Year of manufacture: 2023 o Recorded operating hours: 1,376 Working area o Swinging diameter above the W-axis: 215 mm o Grindable bore length: 100 mm o Grindable bore diameter max.: 100 mm o Grindable external length: 100 mm o Length of the part with clamping devices: 200 mm Travel distances o X-axis: 400 mm o Z-axis: 200 mm Axis speeds o X-axis: 1 - 25,000 mm/min o Z-axis: 1 - 25,000 mm/min Spindle data o C0-axis, workpiece spindle 400 with direct drive o Motor spindle, infinitely adjustable: 0 - 2,000 rpm o Motor power: 5 kW o Workpiece weight incl. clamping devices max.: 80 kg o Internal taper: 5 MK o External centering: 80 g6 mm o Spindle bore: 30 mm o Water cooling: available Lodszgcd Nopfx Aiiorn Operating data o Machine weight: 4,500 kg o Machine connection values o 3 x AC / 400 V / 50 Hz o Rated power: approx. 34 kVA o Rated current: approx. 49 A Peripherals • Air filter unit, IFS, type IFMC 1800, year of manufacture 2021, serial no. 565760-02 • Cooling unit, HYFRA, type E-CHILLY 5-400V-S, year of manufacture 2022, serial no. 10129303PC01240522, cooling capacity approx. 5,480 m³ / 32° Celsius • Hydraulic unit, LEHMANN UMT, type KSS0119, year of manufacture 2022, own weight approx. 610 kg, consisting of: • Cooling unit, HYFRA, type TRK-CHILLY-45-EF-S, year of manufacture 2022, serial no. 10132616PC01290722 • Chip conveyor, LEHMANN UMT, type FB100, year of manufacture 2022, serial no. AUF007093-1, own weight approx. 80 kg • Magnet unit, LEHMANN UMT, type VMA 100S GM WA, year of manufacture 2022, serial no. AUF007093-1, own weight approx. 60 kg The machine was loaded manually. In automatic loading operation, a collision occurred.

Condition: good (used), Year of construction: 2022, operating hours: 7,400 h, machine/vehicle number: 100644, grinding length: 600 mm, workpiece length between centers: 600 mm, feed length X-axis: 650 mm, feed length Z-axis: 1,000 mm, overall weight: 10,000 kg, j.stumpf [at] ivg.auction Control, monitoring, and operating data o NC control: SIEMENS, Type 840 D SL Lrodpszgbw Iofx Aiion o Year of manufacture: 2022 o Serial number: 100644 o Recorded operating hours: 7,315 o Monitoring system: MARPOSS, Type P7 Travel distances o X-axis: 650 mm o Z-axis: 1,000 mm Axis speeds o X and Z axes max.: 15,000 mm/min o X and Z axes min.: 0.01 mm/min Working area o Max. grinding length: 600 mm o Center distance: 225 mm Performance data o Grinding spindle: 1 tool for external cylindrical grinding o Tool dimensions: Ø 760 x 250 x Ø 304.8 mm o Cutting speed: 60 m/s o Power: 30 kW o Max. grinding wheel speed according to text: approx. 80 m/s Workpiece spindle o Axis speed: 5 - 1,000 min⁻¹ o Taper: 5 Morse o Motor torque: 16 N.m Tailstock & tool post o Taper: 5 Morse o Max. tailstock quill travel: 80 mm o Diamond grinding wheel profiling tool Saddle drives o Torque motor X-axis: 28 N.m o Torque motor Z-axis: 16 N.m Operating data o Year of manufacture: 2022 o Recorded operating hours: 7,315 o Operating pressure: approx. 6 bar General data o 3 x 400 VAC / 50 Hz / 72 kW / 119 A o Weight: 10,000 kg Peripherals • Automated workpiece removal station, JOVI, Type 1113B, year of manufacture 2022, weight approx. 300 kg • Air filter unit, IFS, Type M 1600, year of manufacture 2022, serial no. 567663, weight approx. 85 kg, connection power 380 - 460 V, 50 / 60 Hz, 0.7 kW, 1.5 - 2.1 A • Hydraulic unit, REXROTH, Type Deposito HE-16120 • Coolant filter unit, MICRONFILTER, Type EASY 250 / KMT350, year of manufacture 2022, serial no. 0201, tank volume approx. 2,300 l, connection power 400 V / 50 Hz, 2.44 kW • Immersion cooler, HASCH, Type MCS-120ST-05AOP6R7S7UZ1-3405C, year of manufacture 2022, serial no. 1003220300954, weight approx. 206 kg • Magnetic separator, MICRONFILTER, Type KMT350, serial no. 0211 • Tool loading unit, DANOBAT, Type rotary table lift, year of manufacture 2022, serial no. 3130490901, weight approx. 350 kg, max. load capacity approx. 360 kg

Condition: good (used), Year of construction: 2022, operating hours: 2,800 h, grinding length: 600 mm, grinding wheel diameter: 450 mm, total width: 3,300 mm, total length: 2,900 mm, total height: 1,900 mm, grinding diameter: 290 mm, quill stroke: 80 mm, distance between centers: 600 mm, grinding wheel width: 50 mm, feed length X-axis: 300 mm, feed length Z-axis: 800 mm, grinding spindle motor power: 25,000 W, grinding spindle speed: 4,500 rpm, j.stumpf [at] ivg.auction Technical Data Year of manufacture, serial number, and operating hours o Year of manufacture: 2022 o Operating hours recorded: 2,737 Control and monitoring o Control: SIEMENS, Type SINUMERIK o Monitoring system: MARPOSS, Type P7 Travel distances o X-axis: 300 mm o Z-axis: 800 mm Axis speeds o X and Z axes max.: 15,000 mm/min o X and Z axes min.: 0.010 mm/min Work area o Max. grinding length: 600 mm o Center height above the table: 150 mm o Max. diameter of oscillation above the table: 290 mm o Workpiece weight: approx. 50 kg Performance data o Grinding wheel speed: up to 120 m/s o Max. grinding wheel dimensions: Ø 450 x 50 mm o Workpiece spindle speed: 30 - 2,000 rpm o Grinding wheel drive: 25 kW / 70 Nm / max. 4,500 min⁻¹ o Workpiece spindle: 15 kW / 24 Nm / max. 5,000 min⁻¹ Hydraulic steady rest and dresser o Arbor taper: MK4 o Max. quill stroke: 80 mm Lrjdpfjzgan Sex Aiisn o Diamond dressing disc, outer Ø 100 mm Workpiece spindle o Arbor taper: MK5 Operating data & connection values o Operating hours recorded: 2,737 Machine connection values o 3 x 400 VAC / 50 Hz / 58 kW / 97 A Dimensions / footprint o Required footprint (L x W x H): 2,810 x 3,300 x 1,900 mm Peripherals • Automated workpiece removal station, JOVI, Type 1113A, year of manufacture 2022, weight approx. 300 kg • Air filter unit, IFS, Type VARIO M 2000, serial no. 568113, year of manufacture 2022, weight approx. 120 kg, connection power 400/460 V, 50/60 Hz, 0.7 kW, 1.7/1.6 A • Water cooling unit, HASCH, Type MCW-50CT-17AUZ1-3407C, serial no. 1001220302582, year of manufacture 2022, weight approx. 150 kg, tank volume approx. 15 l • Coolant filter system, MICRONFILTER, Type EASY 250 / KMT350, serial no. 0201, year of manufacture 2022, tank volume approx. 2,300 l, connection power 400 V / 50 Hz, 5.34 kW • Immersion cooler, HASCH, Type MCS-120ST-05AOP6R7S6UZ1-3407C, serial no. 1003220400836, year of manufacture 2022, weight approx. 206 kg • Coolant tank, MICRONFILTER, Type VR200L / MIN-150L, serial no. 0201, year of manufacture 2022, tank volume approx. 150 l, connection power 400 V / 50 Hz, 1.1 kW • Separating magnet, MICRONFILTER, Type KMT350, serial no. 0212 • Loading unit, DANOBAT, Type rotary table lift, serial no. 3810490908, year of manufacture 2022, weight approx. 170 kg, max. load capacity approx. 230 kg • Rotary table trolley, year of manufacture 2022, serial number 110000503

Year of construction: 2005, condition: ready for operation (used), - USED - CNC EXTERNAL GRINDING MACHINE CENTRE HEIGHT: 171 mm DISTANCE BETWEEN CENTRES: 430 mm MAX GRINDING LENGTH: 400 mm Ledpjyvlxdjfx Aiiorn MAX ADMITTED LOAD: 150 Kg X-AXIS TRAVEL: 170 mm Z-AXIS TRAVEL: 600 mm RAPID FEEDS: 12 m/min SPINDLE: 830 rpm; 24 Nm GRINDING WHEEL SIZE: 508 x 80 x 203,2 mm MOTOR POWER: 7,5 kW CONTROL UNIT: FAGOR 8055 TCO WEIGHT: 4500 Kg ACCESSORIES: FUME EXHAUSTER ; PAPER FILTER ; MAGNETIC FILTER ; GRINDING WHEEL BALANCER NOTE: 0-9° SWIVELLING TABLE; SWIVELLING CHUCK; INVERTER FOR KEEPING THE PERIPHERAL EXTERNAL GRINDING WHEEL SPEED STEADY; PIECE LOCKING DEVICE WITH PNEUMATIC SYSTEM; HYDRAULIC OPENING TAILSTOCK AND DEVICE FOR SEARCHING THE CYLINDRICITY