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Mill-Thread Technical Section
Mini Mill-Thread vs. Taps
Features
Mini Mill-Thread
Taps
Thread surface quality Thread geometry Thread tolerances Machining time
High
Medium Medium
Very accurate
4H, 5H, 6H with std cutter Same as tap or shorter Almost not possible
6H with standard tap, 4H with specific tap
Short
Tool breakage Machining load
Could happen often
Very low
High
Range of thread diameters Right/Left hand threading
Wide range of diameters
Specific tap for each diameter Specific tap for each
Same cutter Full profile
Geometric shape
Partial profile
Cutting Data
MTSB
Feed Fz [mm/tooth] Cutting Diameter=D
Cutting speed Vc [m/min]
ISO Standard
Materials
Ø1 Ø1.5 Ø2
Ø3 Ø4 Ø5
P Low and Medium Carbon Steels < 0.55%C 60-120 0.04 0.05 0.05 0.07 0.09 0.11 High Carbon Steels ≥ 0.55%C 60- 90 0.03 0.04 0.05 0.06 0.08 0.09 Alloy Steels, Treated Steels 50- 80 0.03 0.04 0.04 0.05 0.05 0.06
Stainless Steel - Free Cutting Stainless Steel - Austenitic
70-100 0.02 0.03 0.03 0.04 0.05 0.06 60- 90 0.02 0.03 0.03 0.04 0.05 0.06 70- 90 0.03 0.04 0.04 0.05 0.05 0.06 40- 80 0.04 0.05 0.05 0.07 0.09 0.11 100-200 0.04 0.05 0.05 0.07 0.09 0.11 60-140 0.03 0.03 0.03 0.04 0.05 0.06 50-200 0.09 0.10 0.11 0.12 0.14 0.16 20- 40 0.03 0.03 0.03 0.04 0.04 0.05 60- 70 0.03 0.04 0.04 0.05 0.05 0.06
M
Cast Steels
K
Cast Iron
Aluminum ≤ 12%Si, Copper
N
Aluminum > 12%Si
Synthetics, Duroplastics, Thermoplastics
S H
Nickel Alloys, Titanium Alloys. Hardened Steel, 45-50HRc
B12-18
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