Standard - Boring Tools - Helical Back Rake

Standard - Boring Tools
HBB / HBBM | Turning Tools

The helical grind on this helical back rake line of tooling provides ideal top rake for better chip control and freer cutting, and features a neck that's centered to shank for use in jig bore machines.

  • Designed for boring applications in bores .020" and larger
  • Polished face for improved edge retention and chip evacuation while reducing galling
  • Helical grind provides ideal top rake for better chip control and freer cutting
  • Uncoated variant ideal for plastics
  • On center neck design allows for static and live/rotating applications
  • Cylindrical shank (no set screw flat)
  • AlTiN coated option provides added lubricity and increased wear resistance in difficult to machine materials
  • CNC ground in the USA

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Head Width Rotational Min. Bore Diameter Maximum Bore Depth Neck Diameter Centerline Offset Shank Diameter Overall Length Uncoated AlTiN Coated Add to Cart Default Sort
H   decimal equiv. DR L2 +.032"/-.000"
+.81 mm / -.00 mm
D3 +.000"/-.002"
+.00 mm / -.05 mm
F D2 (h6) L1 Tool # Price Tool # Price
.0175 .0175 .020 .063 .015 .010 .1250 1.5 HBB-020062 $31.90 HBB-020062X $34.40 00000001
0.45 mm .0177 0.5 mm 2 mm 0.4 mm 0.25 mm 3 mm 38 mm HBM-005002 $29.00 00000002
.0225 .0225 .025 .063 .020 .013 .1250 1.5 HBB-025062 $31.90 00000003
.0225 .0225 .025 .125 .020 .013 .1250 1.5 HBB-025125 $31.90 HBB-025125X $34.40 00000004
0.65 mm .0256 0.7 mm 3 mm 0.6 mm 0.35 mm 3 mm 38 mm HBM-007003 $29.00 00000005
.0275 .0275 .030 .125 .025 .015 .1250 1.5 HBB-030125 $31.90 00000006
.0275 .0275 .030 .188 .025 .015 .1250 1.5 HBB-030187 $31.90 HBB-030187X $34.40 00000007
0.75 mm .0295 0.8 mm 4 mm 0.7 mm 0.40 mm 3 mm 38 mm HBM-008004 $29.00 00000008
.0325 .0325 .035 .125 .030 .018 .1250 1.5 HBB-035125 $24.60 HBB-035125X $27.10 00000009
.0325 .0325 .035 .188 .030 .018 .1250 1.5 HBB-035187 $24.60 HBB-035187X $27.10 00000010
0.85 mm .0335 0.9 mm 5 mm 0.8 mm 0.45 mm 3 mm 38 mm HBM-009005 $22.40 00000011
0.90 mm .0354 1.0 mm 6 mm 0.8 mm 0.50 mm 3 mm 38 mm HBM-010006 $22.40 00000012
.0375 .0375 .040 .188 .035 .020 .1250 1.5 HBB-040187 $24.60 HBB-040187X $27.10 00000013
.0375 .0375 .040 .250 .035 .020 .1250 1.5 HBB-040250 $24.60 HBB-040250X $27.10 00000014
.0450 .0450 .050 .313 .040 .025 .1250 1.5 HBB-050312 $24.60 HBB-050312X $27.10 00000015
1.35 mm .0532 1.5 mm 9 mm 1.2 mm 0.75 mm 3 mm 38 mm HBM-015009 $22.40 00000016
.0550 .0550 .060 .375 .050 .030 .1250 1.5 HBB-060375 $24.60 HBB-060375X $27.10 00000017
1.63 mm .0642 1.75 mm 10 mm 1.5 mm 0.88 mm 3 mm 38 mm HBM-017510 $22.40 00000018
.0650 .0650 .070 .438 .060 .035 .1250 1.5 HBB-070437 $24.60 HBB-070437X $27.10 00000019
.0750 .0750 .080 .500 .070 .040 .1250 1.5 HBB-080500 $24.60 HBB-080500X $27.10 00000020
2.05 mm .0807 2.26 mm 12 mm 1.9 mm 1.13 mm 3 mm 38 mm HBM-022512 $22.40 00000021
.0850 .0850 .090 .500 .080 .045 .1250 1.5 HBB-090500 $24.60 HBB-090500X $27.10 00000022
.0950 .0950 .100 .563 .090 .050 .1250 1.5 HBB-100562 $24.60 HBB-100562X $27.10 00000023
2.58 mm .1016 2.75 mm 14 mm 2.4 mm 1.38 mm 3 mm 38 mm HBM-027514 $22.40 00000024
2.75 mm .1083 3.0 mm 16 mm 2.5 mm 1.50 mm 4 mm 50 mm HBM-030016 $23.15 00000025
.1100 .1100 .120 .625 .100 .060 .1250 1.5 HBB-120625 $24.60 HBB-120625X $27.10 00000026
.1100 .1100 .120 1.000 .100 .060 .1250 1.5 HBB-1201000 $24.60 HBB-1201000X $27.10 00000027
.1225 .1225 .135 .750 .110 .068 .1875 2.0 HBB-135750 $26.35 HBB-135750X $29.25 00000028
.1225 .1225 .135 1.000 .110 .068 .1875 2.0 HBB-1351000 $26.35 HBB-1351000X $29.25 00000029
.1400 .1400 .150 1.000 .130 .075 .1875 2.0 HBB-1501000 $26.35 HBB-1501000X $29.25 00000030
.1400 .1400 .150 1.250 .130 .075 .1875 2.0 HBB-1501250 $26.35 HBB-1501250X $29.25 00000031
3.65 mm .1437 4.0 mm 25 mm 3.3 mm 2.00 mm 6 mm 57 mm HBM-040025X $35.65 00000032
4.15 mm .1634 4.5 mm 30 mm 3.8 mm 2.25 mm 6 mm 57 mm HBM-045030 $25.90 00000033
.1700 .1700 .180 1.000 .160 .090 .1875 2.0 HBB-1801000 $26.35 HBB-1801000X $29.25 00000034
.1700 .1700 .180 1.250 .160 .090 .1875 2.0 HBB-1801250 $26.35 HBB-1801250X $29.25 00000035
.1700 .1700 .180 1.500 .160 .090 .1875 2.0 HBB-1801500 $26.35 HBB-1801500X $29.25 00000036
.1975 .1975 .210 1.000 .185 .105 .2500 2.5 HBB-2101000 $28.55 HBB-2101000X $33.45 00000037
.1975 .1975 .210 1.250 .185 .105 .2500 2.5 HBB-2101250 $28.55 HBB-2101250X $33.45 00000038
.1975 .1975 .210 1.500 .185 .105 .2500 2.5 HBB-2101500 $28.55 HBB-2101500X $33.45 00000039
5.15 mm .2028 5.5 mm 35 mm 4.8 mm 2.75 mm 6 mm 57 mm HBM-055035 $25.90 00000040
.2275 .2275 .240 1.000 .215 .120 .2500 2.5 HBB-2401000 $28.55 HBB-2401000X $33.45 00000041
.2275 .2275 .240 1.500 .215 .120 .2500 2.5 HBB-2401500 $28.55 HBB-2401500X $33.45 00000042
.2275 .2275 .240 1.750 .215 .120 .2500 2.5 HBB-2401750 $28.55 HBB-2401750X $33.45 00000043
.2750 .2750 .300 1.000 .250 .150 .3125 2.5 HBB-3001000 $39.05 HBB-3001000X $45.85 00000044
.2750 .2750 .300 1.500 .250 .150 .3125 2.5 HBB-3001500 $39.05 HBB-3001500X $45.85 00000045
.2750 .2750 .300 1.750 .250 .150 .3125 2.5 HBB-3001750 $39.05 HBB-3001750X $45.85 00000046
.3400 .3400 .360 1.000 .320 .180 .3750 2.5 HBB-3601000 $54.20 00000047
.3400 .3400 .360 1.500 .320 .180 .3750 2.5 HBB-3601500 $54.20 HBB-3601500X $61.00 00000048
.3400 .3400 .360 2.000 .320 .180 .3750 4.0 HBB-3602000 $69.80 HBB-3602000X $75.60 00000049
.3400 .3400 .360 2.500 .320 .180 .3750 4.0 HBB-3602250 $69.80 00000050
.3400 .3400 .360 2.500 .320 .180 .3750 4.0 HBB-3602500 $69.80 HBB-3602500X $75.60 00000051
.4600 .4600 .480 2.500 .440 .240 .5000 4.0 HBB-4802500 $83.70 00000052
.4600 .4600 .480 3.000 .440 .240 .5000 4.0 HBB-4803000 $83.70 00000053