SUMIBORON StockBNC2010 BNC2020 BN1000 BN2000 BN7000 SUMIBORON Small Hole Boring Bars BNZ Type ● ø7mm minimum machining diameter with special one-use insert ● High-rigidity indexable type boring bar with all-cemented carbide shank and powerful clamp ● Economical and easy tool management with single-use type inserts 91° L BNZ Fig 1 DMIN Min. Bore Dia.5° DCON Internal Turning and Facing LF H GAMF Holder Parts Dimensions (mm) Cat. No. Min. BoreDia. Diameter Height OverallLength Rake Angle Fig Flat Screw Wrench Adapter Sleeve Nm DMIN DCON H LF GAMF (For Torx Holes) BNZ 606R ● 7.0 6.0 5.5 80 -14° 1 HBB616 BNZ 608R ● 9.0 8.0 7.5 100 -12° 1 HBB816 BNZ 610RBNZ 612RBNZ 616R ● 11.0 10.0 9.5 125●13.012.011.0130●17.016.015.0145-10°-8°11BFTX0204N0.5 TRX06-6°1 Q BNZ 620R ● 21.0 20.0 19.0 160 -5° 1 Insert ( SUMIBORON) Dimensions (mm) Fig 1 ø16 DCB Nose Quantity Cat. No. Radius 15 100 RE Fig 1 80° NU-ZNEX 040102 Q Q ●●● 0.2NU-ZNEX 040104QQ ●●●0.4ø4.76SingleNC-ZNEX 040102LE●QQQQ0.2Sleeve 7° Dimensions (mm)Cat. No.Stock Bore Dia. DCB Applicable Holders Fig pack NC-ZNEX 040104LE ● Q Q Q Q 0.4 HBB 616 ● 6.0 BNZ 606R 1 NC-ZNEX 040102LT Q ● Q Q Q 0.2 1.59 HBB 816 ● 8.0 BNZ 608R 1 NC-ZNEX 040104LT Q ● Q Q Q 0.4 HBX Type sleeve (HBX6016) can also be used with 10 pack T-NU-ZNEX 040102T-NU-ZNEX 040104QQQQ ●● 0.20.4 BNZ606R. Recommended Cutting Conditions Low speeds may causeSpindle Speed nAbove 2,000 min-1chattering and chipping on theImportant Notes cutting edge. (1) Make the holder overhang as short as possible. (Maximum L/D = 5) Excessive depth of cut may (2) Even minor workpiece runout may affect tool life. Depth of Cut ap 0.03 to 0.2mm cause larger tool deformation,resulting in deterioration of boreaccuracy.(3) Select a boring bar with a diameter as close to the borediameter as possible. (4) Although it is difficult to increase the rotational speed in small- Feed Rate f 0.03 to 0.1mm/rev ― diameter boring applications, higher speeds are recommended whenever possible to extend tool life. N m Recommended Tightening Torque (N·m) L111