THIS DEVICE IS DESIGNED TO ACCEPT SPHERES FROM FIVE SIXTEENTHS OF AN ( 5/16 INCH ) ( 0.3125 INCH ) [ 7.9MM ] TO ONE HALF INCH ( 1/2 INCH )( 0.5 INCH ) [ 12.7 MM ] DIAMETER. THREE EIGHTS OF AN INCH ( 0.375 INCH ) [ 9.5MM ] IS THE NOMINAL DIAMETER. THIS IS OUR PART # VB-375-SM.

THE FLAT MOUNTING SURFACE ON THE BACK SIDE OF THIS PART IS A PRECISION FLAT LAPPED ANNULESS.

THE INCLUDED ANGLE OF THIS VEE BLOCK IS 90 DEGREES.

THE MAJOR DIAMETER OF THIS VEE BLOCK IS THREE QUARTERS OF AN INCH ( ¾ INCH )( 0.75 INCH) [19MM].

THE FLAT FACES OF THE VEES OF THIS DEVICE ARE PRECISION GROUND ON A SPECIAL CUSTOM BUILT MACHINE WITH THE FACE OF THE GRINDING WHEEL, NOT THE PERIPHERY. THE RESULTING CRISSCROSS PATTERN BREAKS UP THE LAY OF THE SURFACE TEXTURE TO GIVE THIS COUPLE FAR SUPERIOR REPEATABILITY.

THIS DEVICE IS DESIGNED FOR SURFACE MOUNTING WITHOUT ANY PROTRUSIONS ON THE BACK SURFACE. IN ORDER TO ACHIEVE GREATER RIGIDITY THE OUTSIDE, THREE QUARTER INCH ( 3/4", 0.75", 19 MM) DIAMETER CAN BE EPOXY GLUED INTO A SHALLOW COUNTER BORE.

THE HOLD DOWN ARRANGEMENT ON THIS DEVICE CONSISTS OF TWO # 6-32 THREADED HOLES THAT ARE PRECISION SPACED 1/2 INCH, (0.5 INCH) [12.7 MM] APART.

THE VB-375-CPM HAS A CENTER THROUGH HOLE THAT IS ONE EIGHT OF AN INCH ( 1/8 INCH ) (0.125 INCH) [3.2MM] DIAMETER.