FOLLOWING THE STANDARD ALPHANUMERIC ISO nomenclature SYSTEM, THE CODE DECODES INTO THESE METRIC MECHANICAL DESIGNATIONS:
S: SHANK MATERIAL BASE (SOLID STEEL SHANK CHASSIS SPECIFIC FOR CONVENTIONAL WORKING OVERHANG RATIOS).
20: SHANK OUTSIDE DIAMETER (20 MM CYLINDRICAL SHANK PROFILE BODY).
R: OVERALL TOOL REACH IDENTIFICATION (STANDARDIZED TOTAL BAR BODY LENGTH OF 200 MM).
S: SYSTEM MOUNTING CLAMP TYPE (SCREW LOCKING RETENTION HOLE ASSEMBLY DESIGNED FOR HIGHER INTERNAL PROFILE CLEARANCES).
C: MASTER INSERT GEOMETRY (MACHINED EXCLUSIVELY FOR 80° RHOMBIC / DIAMOND-SHAPED INDEXABLE INSERTS).
L: TOOLHOLDER LAYOUT APPROACH ANGLE (PROVIDES A PERFECT 95° TOOL CUTTING EDGE PROFILE ANGLE FOR PASSING internal STEP FACES).
C: INSERT CHIP clearance FLANK (calibrated FOR 7° POSITIVE INSERT CLEARANCE ANGLES TO PREVENT SEVERE MACHINING WALL RUBBING).
L: CUTTING DIRECTION ALIGNMENT (LEFT-HAND OPERATIONAL TURRET DIRECTION ORIENTATION).
09: INSERT POCKET EDGE RECEPTACLE LIMIT (MATCHED SPECIFICALLY TO POCKET AN 9 MM CUTTING EDGE LENGTH INSCRIBED CIRCLE).
CONSUMABLE COMPATIBILITY
THIS 20 MM BORING BAR HOUSES METRIC CCMT 09T3 OR CCGT 09T3 STYLE POSITIVE INSERTS (SUCH AS THE UNIVERSAL CCMT 09T304 OR CCMT 09T308 CORNER VARIETIES).
OPERATIONAL CONSTRAINTS
MINIMUM BORE ENTRY DIAMETER (
): THE GEOMETRY AND OFFSET POSITION ALLOWS ACCURATE ENTRY ACCESS INSIDE COMPONENT HOLES RANGING DOWN TO A MINIMUM CUT BOUNDARY OF 24 MM TO 25 MM.
WORKING REEACH PROPORTION: TO SUPPRESS HARSH DEFLECTION AND CHATTER, MAINTAIN A SECURE GRIP RATIO WORKING OVERHANG UNDER A 3X TO 4X SHANK DIAMETER LIMIT (ROUGHLY 60 MM TO 80 MM DEPTH MAXIMUM).
