Powermatic 1200HD, Instruction Manual & Parts List

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TABLE 2: REAMING SPEEDS - HIGH SPEED STEEL TOOLS
MATERIALS - RPM
STEEL
1/8 0.004 1222 1528 1833 2139 2445 0.14 0.0045 0.36 0.0081
1/4 0.006 611 764 917 1070 1222 0.29 0.005 0.72 0.0092
3/8 0.008 407 509 611 713 815 0.44 0.0055 1.07 0.0102
1/2 0.01 306 382 458 535 611 0.57 0.0059 1.43 0.0109
5/8 0.011 244 306 367 428 489 0.72 0.00624 1.78 0.0115
3/4 0.012 204 255 306 357 407 0.87 0.0066 2.14 0.0121
7/8 0.013 175 218 262 306 349 1.01 0.0068 2.49 0.0126
1 0.014 153 191 229 267 306 1.16 0.007 2.85 0.013
NOTE: For Carbide Reamers Use 3 Times Charts Speeds
Counterboring & Spotfacing - High Speed Steel Tools - Surface Ft./Min.
325 100 50 50 40 30 45 55 65 110
NOTE: For Carbide Spotfacers Use 4 Times Chart Values
MALLE-
ABLE
IRON
CAST
IRON
CLASS 30
STEEL
CASTING
HARD
BRINELL
300-375
MEDIUM
BRINELL
225-300
SOFT
BRINELL
100-200
DEAD
SOFT
BRINELL
UNDER 100
BRONZE
BRASS
VERY
HARD
BRINELL
400-425