SEC- Boring Bars / SUMIBORON Small Diameter Boring Bars

S-ETFN / BNZ

S-ETFN DMIN Min. ■ Inserts

Steel machinable diameter DCON

Stop Boring 91° ・TNMG160408N-GE ・TNMG220408N-GE

(Representative example) H LF GAMF – 6° ■ Parts LH This figure shows right handed tools. ■ Holders Right-handed (R) holders are applicable for left-handed (L) and neutral (N) inserts. Left-handed (L) holders are applicable for right-handed (R) and neutral (N) inserts. Dimensions (mm)

Min. Cutting Rake

Stock machining Diameter Height Length edge Head Applicable inserts

Holder diameter distance angle

Cat. No.Conventional Cat. No.ShimsEccentric shafts Wrenches
MaterialR L DMIN DCON H LF WF LH GAMF

E Cat. No. Page

S25R-ETFN R/L1604-34BTFN325 R/LD342523 200 1718−12CPB34
□□SS From

D − TN 1604 STW323 LH025

S32S-ETFN R/L1604-44 BTFN332 R/L 44 32 30 250 22 20 10 B56 CPB35

Steel D −

S40T-ETFN R/L2204-54 BTFN440 R/L 54 40 37 300 27 25 10 SS CPB44T

TN □□2204 B61 STW434 LH030

S50U-ETFN R/L2204-70 BTFN450 R/L 70 50 47 350 35 32 −10 CPB45T