Helical Back Rake Boring Bars with Flat

Maximize machining efficiency with our helical back rake boring bars with flat, designed for precise cuts and secure toolholding. The flat design provides a stable and reliable grip for optimal tool alignment and reduces vibration during operation. Featuring a positive high shear tool design, these bars reduce cutting force, ensuring smoother and more efficient machining. Made from premium submicron grade carbide, they offer exceptional durability. Available in both uncoated and coated versions, the AlTiN+ coating enhances wear resistance and extends tool life.

A (Minimum Bore)
B (Maximum Depth)
S (Shank Diameter)
OAL
Tool #Uncoated EDP #AlTiN+ EDP #
0.0250.0930.1251.50HB25F215919216195
0.0270.1250.1251.50HB27F215925216201
0.0310.1560.1251.50HB31F215931216207
0.0310.1870.1251.50HB31LF215937216213
0.0360.1560.1251.50HB36F215943216219
0.0360.2500.1251.50HB36LF215949216225
0.0420.2500.1251.50HB42F215955216231
0.0420.3120.1251.50HB42LF215961216237
0.0520.3120.1251.50HB52F215967216243
0.0570.3120.1251.50HB57F215973216249
0.0600.3750.1251.50HB60F215979216255
0.0600.5000.1251.50HB60LF215985216261
0.0700.4370.1251.50HB70F215991216267
0.0800.5000.1251.50HB80F215997216273
0.0850.5000.1251.50HB85F216003216279
0.0900.5000.1251.50HB90F216009216285
0.0900.6250.1251.50HB90LF216015216291
0.1000.5620.1251.50HB100F215883216159
0.1000.6250.1252.00HB100LF215889216165
0.1100.5620.1251.50HB110F215895216171
0.1100.6250.1252.00HB110LF215901216177
0.1200.6250.1251.50HB120F215907216183
0.1200.6250.1252.00HB120LF215913216189