Общий каталог TooTool - страница 35

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Technical Information for XN Type Threading XN Type Threading Code System HJ American Buttress ( 45 ° Clearance Flank Leading ) : XNTB - B Inserts • PULL - type chuck chuck Insert vs. Toolholder Orientation XN Type Threading Code System externalinternal anti-clockwise rotation anti-clockwise rotation XNTB-2RB XNTB- 3RB XNTB-4RB insert notch XNTB-2LB Insert Thread Additional Insert Industry Insert Definition of Additional Carbide 45° clearance flank 45° clearance XNTB-3LB 1 sealing name standard information size Thread hand Insert information grades XNTB-4LB of the thread being flank of the the leading flank ] surface in Identification thread being i toolholder the leading flank sealing XNTB-2RB insert Insert Name Thread Standard Additional Information surface XNTB-3RB notch in bar XNTB-4RB B XNTB-2LB Internal Buttress External Buttress XNTB- 3LB 45° clearance flank leading 45° clearance flank leading 45° clearance flank leading XNTB-4LB B = Buttress F = Fine pitch S = Stub Acme A = Acme D = APIorNPT J = UNJthread C = Cresting P = Positive rake XN : Top clamping seriers K = Fine pitch, psoitive U = Utility** T = 60 ° V thread W = 55 ° V Whitworth A — ^ .010" infeed . 010" I t 007 ' nose radium .0052" .0039" chip loa chip loac Insert Size Industry Thread Identification Insert Hand chip load . 0012" D \A chip load 3 G maximum depth with B-style insert t 55 065 15° infeed angle XNTB-B insert 0° infeed angle \ T T ro Position indicates API or drilling 066 Inset Size S ( mm ) T ( mm ) industry form designation 1 2.54 2.54 (e . g. ,10RD , 8 RD , . 038 ) feed direction feed direction R : right hand L : left hand or Controlled root radius threading 2 5.56 3.81 inserts indicate the root radius in 3 8.74 4.95 001" increments (NJ, NJF, NJP, NJK ) 4 11.51 6.48 or M indicates metric ISO thread D A nose radius pitch based on Insert 5 17.48 9.65 ( inch ) ( inch ) ( inch ) maximum radius 6 11.51 9.73 XNTB - 2 0.133 0.024 0.002 - 0.004 16 - 20 TPI 8 7.93 11.13 XNTB - 3 0.171 0.031 0.005 - 0.008 8 - 16 TPI XNTB - 4 0.218 0.049 0.008 - 0.012 4 - 6 TPI NOTE : For balanced chip load , 15 ° infeed angle is suggested . Definition of Insert Additional Information Carbide grades @ Internal Threading Limitations internal threading limitations internal threading limitations XNTB - 2 A Buttress threading inserts XNTB - 3 and XNTB - 4A Buttress threading inserts •Threads per inch or pitch minimum minor minimum minor ( for metric) I = Internal thread M = Multiple tooth TPI nominal thread size TPI nominal thread size diameter ( inch ) diameter ( inch ) E = External thread C = Coarse pitch • "A ” or “ B” type Buttress 8 1- 3 / 4 1.600 4* 2 -7 /8 2.575 (used only if internal D = Dryseal TTIP 30 TTIM45 TTIS 30 10 1- 5 / 8 1.505 5 2 - 3 /4 2.510 insert and external thread 12 1- 1 / 2 1.400 6 2 -3 /8 2.175 •Taper per foot — API forms are different ) 16 1- 1 / 4 1.175 8 2 - 1/8 1.975 threads 20 1- 1 / 16 1.002 10 1 - 7/8 1.755 12 1 - 5 /8 1.525 16 1-1/2 1.407 20 1 - 7 / 16 1.378 * XNTB- 4B insert only.