BRYANT 500 SUPER-PRECISION CENTER HOLE GRINDER
BRYANT 500 SUPER-PRECISION CENTER HOLE GRINDER

BRYANT 500 SUPER-PRECISION CENTER HOLE GRINDER

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BRYANT "SUPER-PRECISION" CENTER HOLE GRINDER
 
MODEL: 500          S/N: C-12087         
 
WORKPIECE LENGTH CAPACITY ................... 2" TO 42"
CLEARANCE, TAILSTOCK CENTER TO COLUMN ....... 6.2"
VISE CAPACITY W/STANDARD JAWS ............... 0.060" TO 6"
CONE ANGLE OF CENTER HOLES GROUND ..........  60 DEGREES
MAX. CENTER HOLE GROUND (LARGE END) ......... 2"
MIN. CENTER HOLE GROUND (LARGE END) ......... 0.050"
GRINDING SPINDLE SPEEDS (W/PULLEY CHANGE): .. 13,000 / 21,500 / 45,000 RPM
PLANETARY DRIVE SPEED ......................  400 RPM
ANGULAR GRINDING STROKE ................... . 0.005" TO .100"
 
APPROX. WT. ................................. 1,250 LBS
DIMENSIONS .................................. 44" L-R, 42" F-B, 75" HIGH
 
 
** - PRODUCES GEOMETRICALLY CORRECT CENTER HOLES -
   A VITAL REQUIREMENT FOR PRECISION O.D. GRINDING.  
   IT IS IDEAL FOR RECENTERING DISTORTED CENTERS IN
   MACHINE SPINDLES, ARBORS, CENTER-CONTROLLED CHECKING
   DEVICES & FOR OTHER SALVAGE WORK.  IT MINIMIZES
   STOCK REMOVAL & GREATLY IMPROVES WORK QUALITY
   & ACCURACY.  60 DEGREE CENTERS UP TO 2" DIAMETER
   CAN BE GROUND IN WORKPARTS UP TO 6" DIAMETER
   AND 2" TO 42" LONG.  OPERATION OF THE BRYANT
   IS UNIQUE.  INSTEAD OF UTILIZING
   PLUNGE GRINDING, WITH IT'S INHERENT FAULTS,
   IT "GENERATES" TO PRODUCE FINE FINISHES
   & PRECISION TOLERANCES SIMILAR TO THOSE OBTAINED
   ON AN INTERNAL GRINDER.  
 
   - HI-PRECISION 3-WAY GRINDING TO THE CONE-SHAPED
   GRINDING WHEELS USED. THESE MOTIONS ARE -:
 
   (1) ROTARY MOTION OF THE GRINDING CONE ABOUT ITS
    SPINDLE AXIS.  
   (2) PLANETARY MOTION OF THE GRINDING CONE ABOUT
    THE WORK AXIS.  
   (3) RECIPROCATING MOTION OF THE GRINDING CONE
    ALONG A LINE 30 DEGREES FROM THE VERTICAL.  
   THE GRINDING CONE MAKES A LINE CONTACT WITH
   THE CENTER HOLE SURFACE, WHICH SIMULTANEOUSLY
   RECIPROCATING ALONG THIS LINE.  THE UNEVEN
   WHEEL WEAR, OCCURRING WITH REGULAR PLUNGE
   GRINDING DUE TO FULL-WHEEL CONTACT, IS ELIMINATED.
 
 
EQUIPPED WITH:
ADJUSTABLE VISE ASSEMBLY
PIVOTING TOP CENTER
BIJUR  SPRAYMIST LUBRICATION
WORK GUARD
 
CONE DRESSING ATTACHMENT WITH DIAMOND
SPINDLE MOTOR AND CONTROLS 1/2 HP 3/60/230-460 VOLT
PLANETARY DRIVE MOTOR AND CONTROLS - 1/4 HP 3/60/230/460 VOLT
WORK DRIVE MOTOR AND CONTROLS - 1/2 HP 3/60/230-460 VOLT
MACHINE IS PRESENTLY WIRED FOR 440 VOLTS
 
 
*** EXCELLENT CONDITION - PRISTINE & CRISP ***
 
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