NEWS

Mitsubishi Materials USA Corporation introduces the Micro-MWS Super Long Drills to our Drilling Family.

June 25. 2008
The Micro-MWS Super Long Drills are designed for customers to use in deep hole drilling applications.
Technical Information:
  • Available in metric diameters (only) in 0.05mm increments from 1.0mm to 2.95mm
  • A total of 120 items available in 3 types: 20DB (20xD), 25DB (25xD) and 30DB (30xD)
  • Optimum cutting edge geometry for breaking chips into small pieces
  • Special flute geometry for superior chip flow
  • Smoother flute surface for excellent chip evacuation
Applications to Target:
  • Deep hole micro parts, medical parts, computer metal parts, aircraft engine parts, etc.
  • All mild steels, carbon & alloy steels, stainless steels, cast iron and heat resistant alloys
(Recommended Cutting Conditions)
Work Material Drill Diameter 1.00mm-2.00mm
Hardness Cutting Speed
(SFM)		 Feed(IPR)
P Mild Steel <=180HB 165
(130-200)		 0.003
(0.0015-0.004)
Carbon Steel
Alloy Steel		 180-280HB 130
(100-165)		 0.0025
(0.0015-0.003)
280-350HB 100
(65-130)		 0.0015
(0.001-0.0025)
M Stainless Steel <=200HB 100
(65-130)		 0.001
(0.0004-0.002)
K Cast Iron Tensile Strength
<=350MPa		 130
(100-165)		 0.0025
(0.0015-0.003)
Ductile Cast Iron Tensile Strength
<=450MPa		 100
(65-130)		 0.0015
(0.001-0.0025)
N Heat Resistant Alloy - 35
(15-50)		 0.0008
(0.0004-0.0012)

Work Material Drill Diameter 2.05mm-2.95mm
Hardness Cutting Speed
(SFM)		 Feed(IPR)
P Mild Steel <=180HB 200
(165-230)		 0.004
(0.003-0.0047)
Carbon Steel
Alloy Steel		 180-280HB 165
(130-200)		 0.0035
(0.0025-0.0047)
280-350HB 165
(130-200)		 0.0025
(0.002-0.004)
M Stainless Steel <=200HB 100
(65-130)		 0.0025
(0.0015-0.003)
K Cast Iron Tensile Strength
<=350MPa		 165
(130-200)		 0.0035
(0.0025-0.0047)
Ductile Cast Iron Tensile Strength
<=450MPa		 165
(130-200)		 0.0025
(0.002-0.004)
N Heat Resistant Alloy - 50
(35-65)		 0.0012
(0.0004-0.002)
Additional Information:
  • When using the Micro-MWS 20DB (20xD), 25DB (25xD) and 30DB (30xD), you must use a starter drill. The following drills can be used as starter drills: Micro-MWS-SB, Micro-MZE-SB & Micro-MZE-SA