A technical drawing of a qualified boring bar with dimensional callouts.

Qualified Boring Bars

Our Qualified Boring Bars are designed for high-precision machining, offering efficiency and accuracy. The qualified length ensures quicker tool changes, reducing downtime. With an overall length tolerance of ± 0.001 and a minimum bore diameter tolerance of ± 0.0005, these bars provide exceptional precision. The precision ground flat guarantees tool orientation consistency. Available with AlTiN+ coating for enhanced wear resistance and extended tool life, or uncoated. Perfect for demanding applications where accuracy is crucial.

A (Minimum Bore)
B (Maximum Depth)
S (Shank Diameter)
OAL
Tool #Uncoated EDP #AlTiN+ EDP #
0.0480.1500.12501.50BQ050150217201217963
0.0480.2000.12501.50BQ050200217204217966
0.0480.3000.12501.50BQ050300217207217969
0.0480.4000.12501.50BQ050400217210217972
0.0580.1500.12501.50BQ060150217213217975
0.0580.2000.12501.50BQ060200217216217978
0.0580.3000.12501.50BQ060300217219217981
0.0580.4000.12501.50BQ060400217222217984
0.0580.5000.12501.50BQ060500217225217987
0.0780.1500.12501.50BQ080150217228217990
0.0780.2000.12501.50BQ080200217231217993
0.0780.3000.12501.50BQ080300217234217996
0.0780.4000.12501.50BQ080400217237217999
0.0780.5000.12501.50BQ080500217240218002
0.0780.6000.12501.50BQ080600217243218005
0.0980.1500.12501.50BQ100150217246218008
0.0980.2000.12501.50BQ100200217249218011
0.0980.3000.12501.50BQ100300217252218014
0.0980.4000.12501.50BQ100400217255218017
0.0980.5000.12501.50BQ100500217258218020
0.0980.6000.12501.50BQ100600217261218023
0.0980.7000.12501.50BQ100700217264218026
0.1080.1500.12501.50BQ110150217267218029
0.1080.2000.12501.50BQ110200217270218032
0.1080.3000.12501.50BQ110300217273218035
0.1080.4000.12501.50BQ110400217276218038
0.1080.5000.12501.50BQ110500217279218041
0.1080.6000.12501.50BQ110600217282218044
0.1080.7000.12501.50BQ110700217285218047
0.1180.2500.18752.00BQ120250217288218050
0.1180.3500.18752.00BQ120350217291218053
0.1180.5000.18752.00BQ120500217294218056
0.1180.6000.18752.00BQ120600217297218059
0.1180.7000.18752.00BQ120700217300218062
0.1180.8000.18752.00BQ120800217303218065
0.1380.2500.18752.00BQ140250217306218068
0.1380.4000.18752.00BQ140400217309218071
0.1380.5000.18752.00BQ140500217312218074
0.1380.6000.18752.00BQ140600217315218077
0.1380.7000.18752.00BQ140700217318218080
0.1380.7500.18752.00BQ140750217321218083
0.1380.8000.18752.00BQ140800217324218086
0.1580.2500.18752.00BQ160250217330218092
0.1580.4000.18752.00BQ160400217333218095
0.1580.5000.18752.00BQ160500217336218098
0.1580.6000.18752.00BQ160600217339218101
0.1580.7500.18752.00BQ160750217342218104
0.1580.9000.18752.00BQ160900217345218107
0.1581.0000.18752.00BQ1601000217327218089
0.1780.3500.25002.50BQ180350217360218122
0.1780.5000.25002.50BQ180500217363218125
0.1780.6000.25002.50BQ180600217366218128
0.1780.7500.25002.50BQ180750217369218131
0.1780.9000.25002.50BQ180900217372218134
0.1781.0000.25002.50BQ1801000217348218110
0.1781.1000.25002.50BQ1801100217351218113
0.1781.2500.25002.50BQ1801250217354218116
0.1781.5000.25002.50BQ1801500217357218119
0.1980.4000.25002.50BQ200400217387218149
0.1980.5000.25002.50BQ200500217390218152
0.1980.6000.25002.50BQ200600217393218155
0.1980.7000.25002.50BQ200700217396218158
0.1980.8000.25002.50BQ200800217399218161
0.1980.9000.25002.50BQ200900217402218164
0.1981.0000.25002.50BQ2001000217375218137
0.1981.1000.25002.50BQ2001100217378218140
0.1981.2000.25002.50BQ2001200217381218143
0.1981.3000.25002.50BQ2001300217384218146
0.2280.4000.31252.50BQ230400217429218191
0.2280.5000.31252.50BQ230500217432218194
0.2280.6000.31252.50BQ230600217435218197
0.2280.7000.31252.50BQ230700217438218200
0.2280.8000.31252.50BQ230800217441218203
0.2280.9000.31252.50BQ230900217444218206
0.2281.0000.31252.50BQ2301000217405218167
0.2281.1000.31252.50BQ2301100217408218170
0.2281.1500.31252.50BQ2301150217411218173
0.2281.2000.31252.50BQ2301200217414218176
0.2281.2500.31252.50BQ2301250217417218179
0.2281.4000.31252.50BQ2301400217420218182
0.2281.5000.31252.50BQ2301500217423218185
0.2281.6000.31253.00BQ2301600217426218188
0.2880.5000.31252.50BQ290500217468218230
0.2880.6000.31252.50BQ290600217471218233
0.2880.7500.31252.50BQ290750217474218236
0.2880.9000.31252.50BQ290900217477218239
0.2881.0000.31252.50BQ2901000217447218209
0.2881.1000.31252.50BQ2901100217450218212
0.2881.2500.31252.50BQ2901250217453218215
0.2881.3500.31252.50BQ2901350217456218218
0.2881.5000.31252.50BQ2901500217459218221
0.2881.6000.31253.00BQ2901600217462218224
0.2881.7500.31253.00BQ2901750217465218227
0.3180.5000.37502.50BQ320500217507218269
0.3180.6000.37502.50BQ320600217510218272
0.3180.7500.37502.50BQ320750217513218275
0.3180.9000.37502.50BQ320900217516218278
0.3181.0000.37502.50BQ3201000217480218242
0.3181.1000.37502.50BQ3201100217483218245
0.3181.2500.37502.50BQ3201250217486218248
0.3181.5000.37502.50BQ3201500217489218251
0.3181.6000.37503.00BQ3201600217492218254
0.3181.8000.37503.00BQ3201800217495218257
0.3182.0000.37504.00BQ3202000217498218260
0.3182.5000.37504.00BQ3202500217501218263
0.3183.0000.37504.00BQ3203000217504218266
0.3580.5000.37502.50BQ360500217546218308
0.3580.6000.37502.50BQ360600217549218311
0.3580.7500.37502.50BQ360750217552218314
0.3580.9000.37502.50BQ360900217555218317
0.3581.0000.37502.50BQ3601000217519218281
0.3581.1500.37502.50BQ3601150217522218284
0.3581.2500.37502.50BQ3601250217525218287
0.3581.5000.37502.50BQ3601500217528218290
0.3581.6000.37503.00BQ3601600217531218293
0.3581.8000.37503.00BQ3601800217534218296
0.3582.0000.37504.00BQ3602000217537218299
0.3582.5000.37504.00BQ3602500217540218302
0.3583.0000.37504.00BQ3603000217543218305
0.4880.7500.50003.00BQ490750217579218341
0.4881.0000.50003.00BQ4901000217558218320
0.4881.2500.50003.00BQ4901250217561218323
0.4881.5000.50003.00BQ4901500217564218326
0.4882.0000.50004.00BQ4902000217567218329
0.4882.5000.50004.00BQ4902500217570218332
0.4882.6000.50004.00BQ4902600217573218335
0.4882.7500.50004.00BQ4902750217576218338