TECHNICAL INFO - Speeds & Feeds
PRO-LINE: Speeds, Feed & Tolerances
Cutting Tools for Advanced Machining Operations - Carbide, PCD, PCBN, Indexable Tooling
HAM Superdrill Speeds & Feeds                               List #285, #280, #286, #283, #292, #293, #314
 
SFM Coolant
Feed Rates Inch per rev.*
Material
Yes
No
Dia. 3mm
Dia. 4mm
Dia. 6mm
Dia. 8mm
Dia. 10mm
Dia. 12mm
Dia. 16mm
Dia. 20mm
Unalloyed Steel up to 800 N/mm2
325-525
160-400
0.003
0.004
0.005
0.007
0.008
0.010
0.014
0.018
Unalloyed Steel 800-1200 N/mm2
300-500
230-360
0.003
0.004
0.005
0.007
0.008
0.010
0.014
0.018
Alloyed Steel over 1200 N/mm2
250-425
200-325
0.002
0.003
0.004
0.005
0.007
0.008
0.014
0.018
Stainless Steel
165-300
130-230
0.002
0.003
0.004
0.005
0.007
0.008
0.012
0.018
Cast Iron, Malleable
330-600
265-460
0.004
0.005
0.008
0.012
0.016
0.016
0.012
0.032
Aluminum long chipping
500-660
330-660
0.004
0.005
0.008
0.012
0.016
0.016
0.024
0.032
Aluminum short clipping
600-1050
330-720
0.004
0.005
0.008
0.012
0.016
0.016
0.024
0.032
Aluminum over 12% Si**
265-760
200-600
0.004
0.005
0.008
0.012
0.016
0.016
0.024
0.010
Titanium
200-325
165-265
0.002
0.003
0.003
0.003
0.005
0.006
0.008
0.010
Bronze, Brass, Zinc
330-760
265-600
0.004
0.005
0.008
0.012
0.016
0.016
0.024
0.032

*Feed rates listed for 3 X diameter applications.
  For 5 X diameter use a factor of 0.80
  For 8 X diameter use a factor of 0.60
**For aluminums over 16% Si, consider the use of HAM PCD Tipped Multi-Drills.

HAM Multi-Drill Speeds & Feeds                          List #297, #298, #299, #294, #296
 
SFM
Feed Rates inch per rev.*
Material
Bright
TiN
TiAIN
Dia. 4mm
Dia. 6mm
Dia. 8mm
Dia. 10mm
Dia. 12mm
Dia. 16mm
Dia. 20mm
Cast Iron
265-400
325-525
400-660
0.003
0.004
0.005
0.007
0.008
0.010
0.014
Nodular Iron
200-300
265-400
330-460
0.003
0.003
0.004
0.005
0.007
0.008
0.012
Aluminum middle chipping
330-660
330-1150
330-2000
0.003
0.004
0.005
0.007
0.008
0.010
0.014
Aluminum over 12% Si**
330-500
100-300
330-1650
0.003
0.004
0.005
0.007
0.008
0.010
0.014
Bronze, Brass
330-500
330-825
330-1300
0.003
0.004
0.005
0.007
0.008
0.010
0.014
*Feed rates listed are for 3 X diameter applications.
  For 5 X diameter use a factor of 0.80
  For 7 X diameter use a factor of 0.70
  For 12 X diameter use a factor of 0.60
*For aluminums of 16% Si, consider the use of HAM PCD Tipped Multi-Drills
Formulas: Conversions to inch:
RPM = (SFM/DIA.(IN)) x 3.82 SFM = feet per min. x (3.28)
IPR = inch per rev./(25.4)
IPM = IPR x RPM Note: Feed rates listed are starting points. With the proper setup, machine toll, and holding technique, higher feeds can be achieved with excellent results.
CYCLE TIME = (DEPTH OR CUT (IN)/IPM) x 60
 
Manufacturing Tolerances
h7,h6
Diameter Range Nominal Size mm
Tolerance Range mm
h7
h6
3.000-6.000
(0.118-0.236)
-0.012
(0.00047")
-0.008
(0.00031")
> 6.000-10.000
(0.236-0.393)

-0.015
(0.00059")
-0.009
(0.00035")
>10.000-18.000
(0.393-0.709)
-0.018
(0.0007")
-0.011
(0.00043")
>18.000-30.000
(0.709-1.181)
-0.021
(0.00083")
-0.013
(0.0005")
Manufacturing Tolerances
m7
Diameter Range Nominal Size mm
mm
inch
3.000-6.000
(0.118-0.236)
(+)0.004
(+)0.016
(+)0.00015
(+)0.00063
>6.000-10.000
(0.236-0.393)
(+)0.006
(+)0.021
(+)0.00023
(+)0.00083
>10.000-18.000
(0.393-0.709)
(+)0.007
(+)0.025
(+)0.00027
(+)0.00098
>18.000-30.000
(0.709-1.181)
(+)0.008
(+)0.029
(+)0.00031
(+)0.00114