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JEL® Thread Milling Tool 1 Technical notes Material group Guideline values for thread milling 1.1 Strength Rm (N/mm²) m400 Hardness HB m120 v c (m/min) = Cutting speed f b (mm/rev.) = Drilling feed f z (mm/tooth) = Milling feed magnetic soft iron Surface uncoated MKG TiCN m x 6 m x 12 M x 16 v c v c f z f z f z Material m/min m/min mm/tooth mm/tooth mm/tooth 80-150 0,015-0,04 0,04-0,06 0,08-0,15 1.2 m700 m200 structural, case hardened steel 80-100 0,015-0,04 0,04-0,06 0,08-0,15 H P 1.8 1.7 1.6 1.5 1.4 1.3 m850 m250 m850 m250 >850 m1200 m350 >250 >1200 >350 m1400 m400 m2200 m600 carbon steel alloy steel alloy/heat treated steel alloy/heat treated steel hardened steel to 45 HRC hardened steel to 58 HRC 80-100 0,015-0,04 0,04-0,06 0,08-0,15 80-100 0,015-0,04 0,04-0,06 0,08-0,15 60-80 0,01-0,03 0,04-0,06 0,04-0,10 50-60 0,01-0,025 0,03-0,05 0,04-0,10 30-50 0,01-0,015 0,015-0,02 0,03-0,08 20-40 0,01-0,015 0,015-0,02 2.1 m850 m250 stainless steel, sulphuretted 60-80 0,015-0,03 0,03-0,05 0,08-0,15 M 2.2 2.3 3.1 3.2 3.3 K 3.4 3.5 3.6 3.7 4.1 m850 m250 m1000 m300 m500 m150 >500 m1000 m300 >150 400- 200- 500 250 m700 m200 >700 m1000 m300 >200 m700 m700 m200 m200 austentic ferritic, ferritic & austentic, martensitic grey cast iron grey cast iron, heat treated vermicular cast iron spheroidal graphite cast iron spheroidal graphite cast iron, heat treated malleable iron >700 200 malleable iron heat treated pure titanium 60-80 0,015-0,03 0,03-0,05 0,04-0,10 60-80 0,01-0,025 0,02-0,04 0,04-0,10 50-80 80-120 0,02-0,04 0,04-0,10 0,08-0,15 50-80 80-120 0,02-0,03 0,04-0,08 0,08-0,12 80-100 0,02-0,04 0,04-0,08 0,08-0,15 80-120 0,02-0,04 0,04-0,10 0,08-0,15 80-100 0,02-0,03 0,04-0,08 0,08-0,12 80-100 0,02-0,04 0,04-0,10 0,08-0,15 80-100 0,02-0,03 0,04-0,08 0,08-0,12 40-100 0,015-0,03 0,03-0,08 0,08-0,15 S 5.1 4.3 4.2 m900 m270 >900 m1250 m300 >270 m500 m150 titanium alloys titanium alloys pure nickel 40-100 0,015-0,03 0,03-0,08 0,08-0,15 40-80 0,015-0,02 0,03-0,06 0,08-0,12 50-60 0,02-0,04 0,04-0,06 0,04-0,10 5.2 5.3 6.1 6.2 6.3 m900 900 m1200 m350 >270 m350 m700 m700 m100 m200 m200 nickel alloys, heat resistant nickel alloys, high heat resistance non-alloy copper short chip, brass, bronze, red brass long chip brass 30-40 0,02-0,04 0,04-0,06 0,04-0,10 10-30 0,015-0,03 0,03-0,05 0,04-0,08 100-300 100-400 0,04-0,07 0,07-0,12 0,10-0,20 100-300 100-400 0,04-0,07 0,07-0,12 0,10-0,20 100-300 100-400 0,04-0,07 0,07-0,12 0,10-0,20 6.4 m500 m470 Cu-Al-Fe alloy (Ampco) 60-80 60-80 0,02-0,04 0,03-0,06 0,08-0,15 N 7.4 7.3 7.2 7.1 m350 m600 m600 m600 m100 m180 m180 m180 Al, Mg non-alloy Al wrought alloy, breaking strain (A 5)
JEL® Thread Milling Tool 1. Problems possible causes solutions Chips packed or glued at the thread profile • poor coolant improve coolant (i.e. add flood coolant, lateral flute coolant supply for through holes) add coolant flutes flutes on shank 1 2 2. Thread go-gage doesn’t fit • thread too small reduce tool radius in offset register • chips in thread improve coolant 3 3. Thread is getting tapered • poor tool clamping improve tool holding (i.e. shrink fit holders) • thread milling feed too high reduce thread milling feed 4 5 4. Erratic tool wear • tool run out too high use better tool holders (i.e. shrink fit holders), check material for homogeneity 6 5. Chippage, tool breakage • feed rate thread milling too high reduce thread milling feed • vibrations check tool holder (don’t use modular systems!!), change feeds and speeds 7 6. Poor thread surface • tool overhang too long check part clamping an and fixture. Use multiple cuts when part is clamped weak • non-suitable tool for this application reduce cutting speed, increase feed/tooth, prefer conventional milling 8 9 Important: See chapter 9 for more application details and safety notes! 25
Page 1 and 2: KomPass - Threading
Page 3 and 4: Process for producing internal thre
Page 5 and 6: Index General information Tool sele
Page 7 and 8: JEL® Producing Internal Threads Pr
Page 9 and 10: JEL® Tool Selection Thread milling
Page 11 and 12: JEL® Tool Selection Taps TAREX TAR
Page 13 and 14: JEL® Tool Selection Roll form taps
Page 15 and 16: Thread Milling Tool MKG Page 1 Thre
Page 17 and 18: M 2,0×D JEL® MKG Thread milling t
Page 19 and 20: UNC 2,0×D JEL® MKG Thread milling
Page 21 and 22: G 2,0×D JEL® MKG Thread milling t
Page 23: MF 1,5×D JEL® MKG XH Thread milli
Page 27 and 28: Thread Milling Tool MGF, UMGF Page
Page 29 and 30: JEL® UMGF Thread engagements 1 D1
Page 31 and 32: M 2,0×D 2,5×D 3,0×D JEL® MGF Th
Page 33 and 34: MF 2,0×D JEL® MGF Thread milling
Page 35 and 36: UNF 1,5×D 2,0×D JEL® MGF Thread
Page 37 and 38: G 1,5×D 2,0×D JEL® MGF Thread mi
Page 39 and 40: MF 1,5×D 2,0×D JEL® MGF XS Threa
Page 41 and 42: M JEL® MGF XH Micro 1,5×D l2.7 l2
Page 43 and 44: MF 1,5×D JEL® MGF XH Thread milli
Page 45 and 46: MF 2,0×D JEL® MGF PKD for metric
Page 47 and 48: MF 2,0×D JEL® UMGF Thread milling
Page 49 and 50: JEL® Thread Milling Tool 1. Proble
Page 51 and 52: Drill Thread Milling Tool BGF, UBGF
Page 53 and 54: JEL® UBGF Thread engagements 1 140
Page 55 and 56: M 2,0×D JEL® BGF Drill thread mil
Page 57 and 58: M 1,5×D 2,0×D JEL® BGF Drill thr
Page 59 and 60: MF 1,5×D 2,0×D JEL® BGF Drill th
Page 61 and 62: UNF 1,5×D 2,0×D JEL® BGF Drill t
Page 63 and 64: M JEL® BGF 1,5×D 2,0×D l10 l2.7
Page 65 and 66: M 1,5×D 2,0×D 2,5×D JEL® BGF NZ
Page 67 and 68: MF 2,0×D JEL® UBGF Drill thread m
Page 69 and 70: UNF 2,0×D JEL® UBGF Drill thread
Page 71 and 72: M 2,0×D 3,0×D JEL® DBGF Direct c
Page 73 and 74: 1. 2. JEL® Drill Thread Milling To
Page 75 and 76:
BENEFITS for you: K One and the sam
Page 77 and 78:
JEL® TOMILL CUT Holder 1 l1 l2 l3
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JEL® XAM 1 2 3 X 21,10 mm (20.22)
Page 81 and 82:
M, MF JEL® GWF TOMILL Thread milli
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UN JEL® GWF TOMILL Thread milling
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NPT, NPTF JEL® GWF TOMILL Thread m
Page 87 and 88:
M, MF JEL® GWF TOMILL Thread milli
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G JEL® GWF TOMILL Thread milling t
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JEL® Thread Milling Tool Material
Page 93 and 94:
JEL® Thread Milling Tool 1. Proble
Page 95 and 96:
Machining threads JEL® tap drills
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M JEL® TINIB, FEDUB HSS-PM Taps fo
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M JEL® FEDUC HSS-PM Taps for metri
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KOMET SERVICE® Comprehensive addit
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M JEL® TAREX HSS-E Taps for metric
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M JEL® SIREX SR l2 Solid Carbide T
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M JEL® SIREX XH Solid Carbide Taps
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MF JEL® SIREX SR Solid Carbide Tap
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1. Oversized thread • wrong tools
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For standard tools customers can ge
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M JEL® MOREX N l2 HSS-E Roll form
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M JEL® MOREX Solid carbide roll fo
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M JEL® MOREX N Solid carbide roll
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M JEL® MOREX S N Solid carbide rol
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MF JEL® MOREX S N Solid carbide ro
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M JEL® MOREX N HML l2 HSS-E Roll f
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MF JEL® MOREX HML HSS-E Roll form
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MF JEL® MOREX R HSS-E Roll form ta
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1. 2. Thread too tigh • tolerance
Page 133 and 134:
Synchro Tapping Chuck HSK-A adaptor
Page 135 and 136:
JEL® JSF Synchro Tapping Chuck wit
Page 137 and 138:
JEL® Collet for Synchro Tapping Ch
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Boring, counterboring and thread mi
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JEL® VABOS EASY Holder with HSK-A
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Fax to +49 7143 373233 JEL® VABOS
Page 145 and 146:
Index Technical Informations Specia
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JEL® Special Solutions 1 PCD speci
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JEL® Tap drill diameters for mille
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M Metric thread Formed threads JEL
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Machining task: Thread: M10, depth
Page 155 and 156:
JEL® Thread Milling, Drill Thread
Page 157 and 158:
JEL® Torque calculations for tappi
Page 159 and 160:
Machine requirements: To carry out
Page 161 and 162:
JEL® Cylindrical Shanks for carbid
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Fax Order +49 7143 373233 KomPass -
Page 165 and 166:
1 From stock or individually manufa
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1 2 A 3 B C D E 4 F G H 5 I J K L 6
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Numerical Index 1802 ... Order No.
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Numerical Index 8087 ... Order No.
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Numerical Index 8894 ... 8897 ... 8
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Notes 1 2 3 4 5 6 7 8 9 175
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TOOLS PLUS IDEAS - a PLUS for our c
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Outside Europe Egypt ZAHRANCO, ENGI
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