Replaceable Tip Drills SMDT-MFS - 180° Flat Edge Tips
Replaceable Head Replaceable
MFS Ideal for drilling and burr control on non-flat surfaces
DEX Coat
High rigidity with RS thinning
● Suited to various types of drilling thanks to a point angle of 180° Can be used for high-efciency spot facing, drilling on non-horizontal surfaces such as inclined and cylindrical surfaces, and interrupted drilling. Also reduces burrs at the hole exit. ● Improves machining stability Achieves high rigidity by employing RS THINNING, which ensures thick web at the bottom.
Excellent entry with sharp edge Strong peripheral edge
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* See next page for true MFS Tip shape (slightly less than 180 degrees)
■ Performance
Comparison of Hole Diameter Accuracy
Comparison of Cutting Force
MFS Type
0.5532
max ▲ ( ▲ ) ave min
0.5528
0.5524
0.5520
0.5516
Competitor's Product
0.5512
0.5508
0.5504
MFS Type
Competitor's Product
Tool
: SMDH 140S + SMDT 1400MFS
Part Material : Carbon Steel Cutting Conditions : v c =328 SFM, f =0.006 IPR, Hole depth 0.827", Wet
■ Precautions when Using MFS Heads
No guide hole (final hole only)
With guide hole
Flat finishing of hole bottom
Application
Guide Holes
Non- at surface
Flat surface
○
○ (guide hole not needed)
○ ○
1.5D holder
×
×
3D to 12D holders
n Recommended Speeds & Feeds - 1.5XD Speed: v (SFM) / Feed: f (IPR)
Soft Steel
General Steel Hardened Steel Stainless Steel Gray Cast Iron Ductile Cast Iron Aluminum Alloy
Drill Dia.
(up to 250HB) (250 to 320HB)
(45HRC)
(up to 200HB)
Drill Dia. Φ Dc (Inch)
Speeds / Feeds Vc (SFM)
Min - Max
Min - Max
Min - Max
Min - Max
Min - Max
Min - Max
Min - Max
130-300
165-265
165-300
165-265
655-855
200-400
230-400
~0.6299
f (IPR) 0.006-0.014 0.006-0.012 0.004-0.008 0.004-0.008 0.008-0.012 0.008-0.012 0.014-0.022
130-300
200-300
200-330
165-300
655-855
260-400
230-400
Vc (SFM)
~0.7874
f (IPR) 0.006-0.014 0.006-0.014 0.006-0.010 0.006-0.010 0.008-0.014 0.008-0.014 0.014-0.024 ~1.212 Vc (SFM) 260-400 230-400 130-300 200-300 200-330 165-300 655-855 f (IPR) 0.008-0.014 0.006-0.014 0.006-0.010 0.006-0.010 0.008-0.016 0.010-0.014 0.014-0.024 Note: 1. The recommended hole depth is 2 x drill diameter. The depth is measured from the highest point of the hole on drilling in inclined surfaces.
2. The recommended cutting conditions are those for drilling on flat horizontal surfaces. 3. Adjust the feed rate according to the inclination angle when drilling on an inclined surface. 4. Set the feed rate at 70% or lower when the inclination angle is 30° or less. 5. Set the feed rate at 50% or lower when the inclination angle is larger than 30°. 6. This product is a drilling tool. Do not use it for traversing or helical milling.
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