7.9" x 15.7" STUDER (MADE IN SWITZERLAND)  UNIVERSAL I.D./O.D.CYLINDRICAL GRINDER    MODEL: S-20-12       S/N: 1463.89      NEW: 1989   CENTER HEIGHT ............................ 3.94" SWING .................................... 7.88" DISTANCE BETWEEN CENTERS ................. 15.7" MAX. WORKPIECE WEIGHT BETWEEN CENTERS .... 44 LBS.   CROSS SLIDE:  X AXIS RAPID APPROACH ........................... 1.18" MAX. TRAVEL .............................. 0.98" SPEED .................................... 0.0012" - 0.06" IPM DIAMETER PLUNGE FEED INCREMENTAL ......... 0 - 0.006" SPARKOUT TIME ............................ 0 TO 5 SECONDS   LONGITUDINAL SLIDE:  Z AXIS MAX. TRAVEL .............................. 16.5" SPEED .................................... 3.94" - 138" IPM SMALLEST AUTOMATIC TRAVEL ................ 0.04" REVERSE DELAY ............................ 0 - 5 SECS MACHINE TABLE SWIVELLING RANGE ........... 30° CCW/15°CW   WHEELHEAD SWIVEL RANGE ............................. 0/15°/30° GRINDING WHEEL SIZE ...................... 14" DIAMETER                                            1- 1/4" WIDE                                            5" BORE OTHER DIAMETER GRINDING WHEELS ........... 10" & 12" MOTOR .................................... 4 H.P. SPEEDS ................................... 1600/1975/2200 RPM WHEELHEAD SWIVELING  ..................... YES   UNIVERSAL WORKHEAD INFINITELY VARIABLE SPINDLE SPEEDS ....... 30 - 1200 RPM SPINDLE TAPER ............................ MT 4 SPINDLE HOLE ............................. 0.95" SWIVELLING RANGE ......................... 0 - 90° MOTOR .................................... 0.66 H.P.   TAISTOCK SPINDLE TAPER ............................ MT 2 SPINDLE TRAVEL ........................... 0.79" FINE ADJ. FOR CYLINDRICAL CORRECTIONS .... 0.0016"   APPROX. MACHINE DIMENSIONS ............... 92"W x 59"W APPROX. MACHINE WEIGHT ................... 4,180 LBS.   MACHINE FEATURES: STUDER CASTING WITH CONCRETE, OPTIMAL ABSORPTION OF EXTERNAL  VIBRATIONS ERGONIMIC MACHINE CONTROL AND OPERATION HYDRODYNAMIC PLAIN BEARING, EXTERNAL GRINDING SPINDLE AXES MOVEMENTS ARE ACCOMPLISHED ELECTRO-MECHANICALLY AUTOMATIC GRINDING CYCLES   AUTOMATIC GRINDING CYCLE WITH AUTOMATIC CUT-OUT:   - RAPID INFEED   -GRINDING FEED   -SPARKOUT   RAPID RETRACTION OF FEED HANDWHEEL TO THE PRESET    GRINDING ALLOWANCE   PLUNGE GRINDING AND TRAVEL GRINDING WITH OR WITHOUT    RAPID INFEED WHEELHEAD CAN BE ADJUSTED TO FIXED SETTINGS, WITH SWIVEL  ANGLES OF 0, 15° AND 30° WORKHEAD SPINDLE IS BOTH "LIVE" AND "DEAD" TAILSTOCK WITH FINE ADJUSTMENT FEATURE SLIDES REST COMPLETELY ON THE MACHINE BASE OVER THE  ENTIRE TRAVLE RANGE WIDE SWIVELLING RANGE OF THE TABLE WHEELHEAD - CROSS SLIDE WITH PRETENSIONED NEEDLE GUIDES LONGITUDINAL SLIDES MOVES ON GROUND V AND FLAT GUIDEWAYS AUTOMATIC LUBRICATION SYSTEM          EQUIPPED WITH: INFINITELY VARIABLE WORKHEAD SPEEDS FINE ADJUSTMENT AND ANGLE STOP ON THE LONGITUDINAL  SLIDE FOR PRECISE SETTING OF TAPERS CENTER IN THE WORKHEAD COOLANT SYSTEM STUDER I.D. SPINDLE, BELT DRIVEN I.D. GRINDING ATTACHMENT,  40,000 MAX. RPM MACHINE IS PRESENTLY WIRED FOR 3/60/230 VOLTS     LINK TO VIDEO https://youtu.be/_Huywke26iw   ** ORIGINAL PAINT - BEAUTIFUL CONDITION & APPEARANCE ** ** INSPECT UNDER POWER IN OUR HARRISON, NJ WAREHOUSE ** FOR MORE INFORMATION: Call Andy at 973-497-7600