DrillingSpeedChart.pdf Drilling Speed Chart WIRE DRILLS CORE DRILLS AND SIMILAR BY OUTSIDE DIAMETER .75 – 2.5 mm 1/8 to 1/2 inch 5/8 to 1-1/2 inch 1-3/4 to 2-3/4 inch 3 to 4 inch 30,000 TO 18,000 rpm 2,400 -1,000 rpm 1,250 – 1,000 rpm 1,100 – 850 rpm 850 – 200 rpm
View detailsCuttingSpeedsTableNo1Chart.pdf Suggested Cutting Speeds with High Speed Steel (HSS) Cutting Tools Table No. 1 MATERIAL BRINELL (BHN) DRILLS S.F.M. TAPS-S.F.M. THREADS PER INCH 3-7 1/2 8-15 16-24 25 UP Aluminum 99-101 200-250 50 100 150 200 Aluminum Bronze 170-187 60 12 25 45 60 Bakelite – 80 50 100 150 200 Brass 192-202 200-250 50… Continue reading Cutting Speeds Table #1 Chart
View detailsCuttingSpeedsTableNo3Chart.pdf Table No. 3 – Tapping, MM of one (cast iron) SIZE SERIES TAP DRILL 75% RPM @ 100 S.F.M. HP @ 100 S.F.M. TORQUE IN-LBS. 6-32 UNC .1077 2775 .19 4.4 6-40 UNF .1138 2775 .12 2.9 8-32 UNC .1337 2335 .2 5.4 8-36 UNF .137 2335 .16 4.3 10-24 UNC .149 2016 .35… Continue reading Cutting Speeds Table #3 Chart
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