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ALLIED MACHINE & ENGINEERING | RECOMMENDED CUTTING DATA

T-A® Recommended Drilling Data | Imperial (inch) Carbide Inserts | Diamond CoaƟng

SFM

Feed Rate (IPR) by Diameter

Carbide Grade

Material

Diamond Coating

3/8" - 1/2" 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006

33/64" - 11/16" 45/64" - 15/16" 31/32" - 1-3/8"

Carbon (hard) Carbon Fiber

N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2 N2

1000 - 1500 1000 - 1500 1000 - 1500 1000 - 1500 1000 - 1500 250 - 1000 250 - 1000 250 - 1000 250 - 1000 250 - 1000 250 - 1000 850 - 1000 650 - 850 500 - 650 200 - 500 250 - 500 250 - 500 100 - 250 100 - 250 100 - 250 100 - 250 100 - 250 1000 1000

0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010

0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012

0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014

Polymer Matrix Composites Carbon / Glass Fiber

Fiberglass Graphite

Plastics

Epoxy Resin

Bismaleimide Resin

Polyester Resin Phenolic Resin

Rubber

Aluminum

0.008 0.008 0.008 0.008 0.008 0.008 0.008 0.008

0.013 0.013 0.013 0.013 0.013 0.013 0.013 0.013

0.016 0.016 0.016 0.016 0.016 0.016 0.016 0.016

0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020

Si < 10%

10% < Si < 15%

Metal Matrix Composites 15% < SI < 20%

20% < Si < 25%

25% < Si

Brass

Bronze Copper

0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006 0.004 - 0.006

0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010 0.008 - 0.010

0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012 0.010 - 0.012

0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014 0.012 - 0.014

Copper Alloys

Lead Alloys

Magnesium Alloys Precious Metals Carbide (green) Ceramic (green)

Matrix Composites

50 - 250 50 - 250 50 - 250

Ceramic

Ceramic (pre-sintered)

Deep Hole Drilling Speed and Feed Adjustment Holder Length

Recommended Speed and Feed Example

If the recommended speed and feed is 200 SFM and 0.008 IPR for a stan dard length holder, then the speed and feed using a 3XL holder in the same applicaƟon would be 150 SFM and 0.007 IPR.

Extended Long

Long Plus

XL

3XL

Speed

0.90

0.85 0.95

0.80 0.90

0.80 0.90

0.75 0.90

200 • 0.75 = 150 SFM

0.008 • 0.90 = 0.007 IPR

Feed

-

Tool failure can cause serious injury. To prevent: - When using holders without support bushing, use a short T-A® holder to establish an iniƟal hole that is a minimum of 2 diameters deep. - Do not rotate tool holder more than 50 RPM unless it is engaged with the workpiece or fixture. Visit www.alliedmachine.com/DeepHoleGuidelines for the most up-to-date informaƟon and procedures. Factory technical assistance is available for your specific applicaƟons through our ApplicaƟon Engineering Team. WARNING

IMPORTANT: The speeds and feeds listed above are a general starƟng point for all applicaƟons. Refer to the Coolant RecommendaƟon charts for coolant requirements to run at the recommended speeds and feeds. Factory technical assistance is available through our ApplicaƟon Engineering department. See adjustment examples above.

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