Threading. Stellram offers high performance grades suitable for all machining applications, in a wide range of materials, for maximum productivity.

Transcription

1 Threading Stellram s comprehensive threading program is available in a wide range of thread forms. artial and full pro le inserts are offered for thread turning. Stellram offers high performance grades suitable for all machining applications, in a wide range of materials, for maximum productivity. Stellram offers both external toolholders and internal bars with through coolant. Internal holders to a minimum bore of 0.240". Anti vibration holders are also available for dif cult applications. 270

2 Threading Threading Grade Descriptions Threading Grade Descriptions Optimum Grade erformance S4066 has the perfect balance between wear resistance and toughness enabling multiple applications to be covered by one insert. This new grade also allows for longer tool life and is ideal for machining a variety of materials at elevated cutting speeds. ISO M K S peed Cutting vc (feet/min) Speed v c Materials Unalloyed Steel Alloyed Steel Stainless Steel H Stainless Cast Iron High Temperature Alloys Rm and Hardness <600 N/mm 2 <180 HBN <950 N/mm 2 <280 HBN N/mm HBN N/mm HBN N/mm HBN Austenitic + Ferritic 300 series Martensitic 400 series Refractory.H. Grey GGFt SpheroidalDuctile GGGFGS Malleable GTS MN/M VD S4066 S4066 SFM m/min min. max. min. max Iron Based Cobalt Based Nickel Based M K N S H Materials Code VD Coated S4066 Unalloyed and Alloyed Steels Stainless Steels Cast Irons Aluminum & Alloys High Temperature Alloys Hard Materials M01 M05 M10 M15 M20 M25 M30 M35 M40 K01 K05 K10 K15 K20 K25 K30 K35 K40 N01 N05 N10 N15 N20 N25 N30 S01 S05 S10 S15 S20 S25 S30 H01 H05 H10 H15 H20 H25 H30 Increasing wear resistance Increasing cutting speed Increasing shock resistance Increasing feed Titanium Based

3 Thread Form Index artial rofile 55 artial rofile ISO Metric American Unified Nut Nut 0,1082 0,1082 Screw 55 Screw 0,8660 Nut Screw 0,1443 0,125 0,07 0,1443 0,6134 0,8660 Nut Screw 0,1443 0,125 0,07 0,1443 0,6134 W, BST ISO, UN ISO UN AGE 276 AGE AGES AGES Unified J Form Metric J Form British Standard Whitworth British Standard ipe Taper Thread 0,8660 Nut Screw 0,1804 0,2706 0,125 0,0902 0,1804 0,5774 0,1082 0,8660 Nut Screw 0,1804 0,2706 0,125 0,0902 0,1804 0,5774 0,1082 0,1373 0,9605 Nut 0,1373 Screw 55 0,01 0,6403 0,01 0,9602 Nut 0,1373 Axis of screw Taper 1: 0,00 0,6403 0,00 UNJ MJ W BST AGE 287 AGE 288 AGES AGE 291 National Taper ipe Thread ACME STUB ACME Trapezoidal (DIN 103) Nut 0,8657 Axis of screw 90 Taper 1: 0,0328 0,08 0,0328 1,9334 1/2 d 1 lay Nut b a 29 Screw c 1/2 d 1 lay 1/2 d 1 lay 0,77 0,5 0,77 1,9334 Nut b 1/2 d 1 lay 1/2 d 1 lay a 29 c Screw lay 1/2 d 1 0,3 0,87 0,87 1,8660 Nut 30 Screw a a 0,5 0,6830 0,6830 NT ACME STUBACME TR AGE 292 AGES AGES AGE

4 Thread Form Index anzer Gewinde (DIN 40431) American Buttress 45/7 AI Casing & Tubing Round AI V0.038 Nut 80 Screw 0,107 0,050 0,107 0,107 Nut 0,8906 1/2 d 1 lay 0,3 1/2 d1 lay 7 Screw 0, ,3 0,32 1/2 d 1 lay 0,0627 0,3 Nut 0,8657 Axis of screw 90 0,127 mm 0,178 mm 0,051 mm 0,1198 0,6260 0,1198 0,152 Nut Axis of screw 1, ,06 0,4873 0,1520 G ABUTT AI RD AI 38 AGE 298 AGES AGE 301 AGES AI V0.040 AI V ,075 Nut 0,8615 1,10 0,5892 0,1723 0,06 Nut 0,8640 1,27 0,1728 0,5912 0,1 90 Axis of screw AI 40 AGES ,1 0,1 90 Axis of screw AI 50 AGES ,1 NOTE: Other thread forms available by quotation. 273

5 Threading Insert Designation 1 E 2 R Size 3 Design IC L R L L IC Left Hand Right Hand mm Inch 06 5/ / 4 Thread itch or TI 11 1/4 3/8 1/2 artial rofile or 55 U 1/2U 27 5/8 mm Thread itch TI 27U 5/8U A G AG Utilisation E I U N Q /2 4 U () /2 3 1/4 U (27) /4 4 External Internal Neutral Full rofile 0.35 to 8.0 mm (723 T..I) itch sizes stated on all thread form part numbers 274

6 Threading Insert Designation UN 5 6 GRADE 7 5 Thread Form 6 Other artial rofile 60 Full rofile MJ SC M T Z NT Full rofile NTF Swarf control style Multitooth style and number of teeth 45 /7 ABUTT AC 29 ACME 80 G 7 Type of Grade For grade descriptions, refer to page: 271 AI RD 30 RD AI 3 /30 SAGE 47.5 BA 29 STACME 45 /7 BBUTT 30 TR 55 BST UN 3 /10 BUTT UNJ 12 ELC 3 /10 VAM ISO 55 W 275

7 External artial rofile 55 Form For British Standard Whitworth & British Standard arallel ipe x y ic 55 l External Right Hand itch Range TI Range Nose Radius X Y mm mm mm Description Grade mm I/C (inch) inch inch inch ERA55 S " ERAG55 S " ERG55 S " Internal artial rofile 55 Form For British Standard Whitworth & British Standard arallel ipe x l y ic Internal Right Hand itch Range TI Range Nose Radius X Y mm mm mm Description Grade mm I/C (inch) inch inch inch IRA55 S " IRA55 S " IRAG55 S " IRG55 S "

8 External artial rofile Form For Unified & ISO metric thread forms y ic x l External itch Range Right Hand TI Nose Radius X Y mm Range mm mm mm Description Grade I/C (inch) inch inch inch ERA60 S " ERAG60 S " ERG60 S " ERN60 S " External Left Hand itch Range TI Range Nose Radius X Y mm mm mm Description Grade mm I/C (inch) inch inch inch ELAG60 S "

9 Internal artial rofile Form For Unified & ISO metric thread forms l x y ic Internal itch Range Right Hand TI Nose Radius X Y Range mm mm mm Description Grade mm I/C (inch) inch inch inch IRA60 S " IRA60 S " IRA60 S " IRA60 S " IRAG60 S " IRG60 S " IRN60 S ' Internal Left Hand itch Range TI Range Nose Radius X Y mm mm mm Description Grade mm I/C (inch) inch inch inch ILA60 S "

10 ISO Metric External ISO Metric Standard reference: ISO 262 (DIN 13) Tolerance class: 6g / 6H x y ic l External ISO Metric itch Right Hand TI Nose Radius X Y mm Range mm mm mm Description Grade I/C (inch) inch inch inch inch ER0.35ISO S " ER0.4ISO S " ER0.45ISO S " ER0.5ISO S " ER0.6ISO S " ER0.7ISO S " ER0.75ISO S " ER0.8ISO S " ER1.0ISO S " ER1.25ISO S " ER1.5ISO S " ER1.75ISO S " ER2.0ISO S " ER2.5ISO S " ER3.0ISO S " ER3.5ISO S "

11 ISO Metric External ISO Metric Standard reference: ISO 262 (DIN 13) Tolerance class: 6g / 6H x y ic l External ISO Metric itch Right Hand TI Nose Radius X Y mm Range mm mm mm Description Grade I/C (inch) inch inch inch inch ER3.5ISO S " ER4.0ISO S " ER4.5ISO S " ER5.0ISO S " ER6.0ISO S " External ISO Metric itch Left Hand TI Nose Radius X Y mm Range mm mm mm Description Grade I/C (inch) inch inch inch inch EL1.0ISO S " EL1.5ISO S " EL2.5ISO S "

12 ISO Metric Internal ISO Metric Standard reference: ISO 262 (DIN 13) Tolerance class: 6g / 6H x l y ic Internal ISO Metric itch Right Hand TI Nose Radius X Y mm Range mm mm mm Description Grade I/C (inch) inch inch inch inch IR0.5ISO S " IR0.75ISO S " IR1.0ISO S " IR1.25ISO S " IR0.5ISO S " IR0.75ISO S " IR1.0ISO S " IR1.25ISO S " IR1.5ISO S " IR1.75ISO S " IR0.4ISO S " IR0.5ISO S " IR0.75ISO S " IR1.0ISO S " IR1.5ISO S " IR1.75ISO S " IR2.0ISO S " IR2.5ISO S "

13 ISO Metric Internal ISO Metric Standard reference: ISO 262 (DIN 13) Tolerance class: 6g / 6H x l y ic Internal ISO Metric itch Right Hand TI Nose Radius X Y mm Range mm mm mm Description Grade I/C (inch) inch inch inch inch IR0.5ISO S " IR0.6ISO S " IR0.7ISO S " IR0.75ISO S " IR0.8ISO S " IR1.0ISO S " IR1.25ISO S " IR1.5ISO S " IR1.75ISO S " IR2.0ISO S " IR2.5ISO S " IR3.0ISO S " IR3.5ISO S "

14 ISO Metric Internal ISO Metric Standard reference: ISO 262 (DIN 13) Tolerance class: 6g / 6H x l y ic Internal ISO Metric itch Right Hand TI Nose Radius X Y mm Range mm mm mm Description Grade I/C (inch) inch inch inch inch IR3.5ISO S " IR4.0ISO S " IR4.5ISO S " IR5.0ISO S " Internal ISO Metric itch Left Hand TI Nose Radius X Y mm Range mm mm mm Description Grade I/C (inch) inch inch inch inch IL1.0ISO S " IL1.5ISO S "

15 External American Unified (UN) Standard reference: ANSI B1.1:74 Tolerance class: 2A / 2B x y ic l External itch Right Hand TI Nose Radius X Y mm Range mm mm mm Description Grade I/C (inch) inch inch inch inch ER8UN S " ER9UN S " ER10UN S " ER11UN S " ER12UN S " ER13UN S " ER14UN S " ERUN S " ER18UN S " ER20UN S " ER24UN S " ER27UN S " ER28UN S " ER32UN S " ER36UN S " ER40UN S " ER5UN S " ER6UN S " ER7UN S "

16 Internal American Unified (UN) Standard reference: ANSI B1.1:74 Tolerance class: 2A / 2B x l y ic Internal itch Right Hand TI Nose Radius X Y mm Range mm mm mm Description Grade I/C (inch) inch inch inch inch IR14UN S " IRUN S " IR18UN S " IR20UN S " IR24UN S " IR28UN S " IR32UN S " IR28UN S " IR27UN S " IR24UN S " IR20UN S " IR18UN S " IRUN S " IR12UN S "

17 Internal American Unified (UN) Standard reference: ANSI B1.1:74 Tolerance class: 2A / 2B x l y ic Internal itch Right Hand TI Nose Radius X Y mm Range mm mm mm Description Grade I/C (inch) inch inch inch inch IR8UN S " IR9UN S " IR10UN S " IR11UN S " IR12UN S " IR13UN S " IR14UN S " IRUN S " IR18UN S " IR20UN S " IR24UN S " IR28UN S " IR32UN S " IR36UN S " IR40UN S " IR5UN S " IR6UN S " IR7UN S "

18 External Unified J Form (UNJ) Standard reference: MILS8879C Tolerance class: 3A / 3B x y ic l External Right Hand itch mm mm mm Description Grade I/C (inch) inch inch inch S " S " S " S " S " S " S " S " TI X Y 287

19 External Unified J Form (UNJ) Standard reference: ISO 5855 Tolerance class: 4h/6h 4H/5H x y ic l External Right Hand itch mm mm mm Description Grade I/C (inch) inch inch inch S " S " S " S " S " S " S " TI X Y 288

20 External British Standard Whitworth (W) Standard reference: ISO 8/1: 1982, B.S. 84:1956, DIN 259 Tolerance class: Medium Class A 55 x y l ic External Right Hand itch mm mm mm Description Grade I/C (inch) inch inch inch ER8W S " ER9W S " ER10W S " ER11W S " ER12W S " ER14W S " ERW S " ER18W S " ER19W S " ER20W S " ERW S " ER24W S " ER26W S " ER28W S " ER32W S " ER36W S " ER40W S " TI X Y 289

21 Internal British Standard Whitworth (W) Standard reference: ISO 8/1: 1982, B.S. 84:1956, DIN 259 Tolerance class: Medium Class A 55 x y l ic Internal Right Hand itch mm mm mm Description Grade I/C (inch) inch inch inch IRW S " IR18W S " IR19W S " IR20W S " IR24W S " IR26W S " IR28W S " IR28W S " IR26W S " IR19W S " IR14W S " IR11W S " IR28W S " IR19W S " IR14W S " IR11W S " TI X Y 290

22 External British Standard ipe Taper Thread (BST) Standard reference: B.S 21: 1985 Tolerance class: Standard BST 55 x y ic l External Right Hand British Standard ipe itch mm mm mm Description Grade I/C (inch) inch inch inch ER28BST S " ER19BST S " ER14BST S " ER11BST S " TI X Y Internal British Standard ipe Taper Thread (BST) Standard reference: B.S 21: 1985 Tolerance class: Standard BST x l y ic Internal Right Hand British Standard ipe itch mm mm mm Description Grade I/C (inch) inch inch inch IR19BST S " IR14BST S " IR28BST S " IR19BST S " IR14BST S " IR11BST S " TI X Y 291

23 External National Taper Thread (NT) Standard reference: USAS B2:1: 1968 Tolerance class: Standard NT x y ic l External Right Hand itch mm mm mm Description Grade I/C (inch) inch inch inch ER18NT S " ER14NT S " ER11.5NT S " ER8NT S " TI X Y Internal National Taper Thread (NT) Standard reference: USAS B2:1: 1968 Tolerance class: Standard NT x l y ic Internal Right Hand itch mm mm mm Description Grade I/C (inch) inch inch inch IR27NT S " IR18NT S " IR18NT S " IR14NT S " IR18NT S " IR14NT S " IR11.5NT S " IR8NT S " TI X Y 292

24 ACME External ACME Standard reference: ANSI B 1.5: 1988 Tolerance class: 3G 29 x y ic l External Right Hand ACME itch mm mm mm Description Grade I/C (inch) inch inch inch ER12ACME S " ER10ACME S " ER8ACME S " ER6ACME S " ER5ACME S " ER4ACME S " TI X Y 293

25 ACME Internal ACME Standard reference: ANSI B 1.5: 1988 Tolerance class: 3G 29 x l y ic Internal Right Hand ACME itch mm mm mm Description Grade I/C (inch) inch inch inch IR12ACME S " IR10ACME S " IR8ACME S " IR6ACME S " IR5ACME S " IR4ACME S " TI X Y 294

26 External Stub ACME (STACME) Standard reference: ANSI B1.8:1988 Tolerance class: 2G 29 x y ic l External Right Hand itch mm mm mm Description Grade I/C (inch) inch inch inch ER12STACME S " ER10STACME S " ER8STACME S " ER6STACME S " ER6STACME S " ER5STACME S " ER4STACME S " TI X Y 295

27 Internal Stub ACME (STACME) Standard reference: ANSI B1.8:1988 Tolerance class: 2G 29 x l y ic Internal Right Hand itch mm mm mm Description Grade I/C (inch) inch inch inch IR12STACME S " IR10STACME S " IR8STACME S " IR6STACME S " IR6STACME S " IR5STACME S " IR4STACME S " TI X Y 296

28 External Trapezoidal (TR) Standard reference: DIN 103 Tolerance class: 7e/7H x y ic 30 l External Right Hand itch mm mm mm Description Grade I/C (inch) inch inch inch ER4.0TR S " ER5.0TR S " ER6.0TR S " TI X Y Internal Trapezoidal (TR) Standard reference: DIN 103 Tolerance class: 7e/7H x l y ic Internal Right Hand itch mm mm mm Description Grade I/C (inch) inch inch inch IR4.0TR S " IR5.0TR S " IR6.0TR S " TI X Y 297

29 External anzer Gerwinde (G) Standard reference: DIN Tolerance class: Standard 80 x y ic l External Right Hand itch TI Range Nominal Thread X Y mm mm mm Description Grade mm I/C (inch) inch inch inch ERG S4066 g " ER18G S g " ER20G S g " External Left Hand itch TI Range Nominal Thread X Y mm mm mm Description Grade mm I/C (inch) inch inch inch ELG S4066 g " Internal anzer Gerwinde (G) Standard reference: DIN Tolerance class: Standard x l y ic Internal Right Hand itch TI Range Nominal Thread X Y mm mm mm Description Grade mm I/C (inch) inch inch inch IR18G S g " IRG S4066 g " IR18G S g " IR20G S g "

30 American Buttress External American Buttress Standard reference: ANSI B1.9 :1973 Tolerance class: Class 2 x y ic 7 45 l External Right Hand American Buttress itch mm mm mm Description Grade I/C (inch) inch inch inch ER10ABUTT S " ER12ABUTT S " ERABUTT S " ER20ABUTT S " ER8ABUTT S " ER12ABUTT S " TI X Y 299

31 American Buttress Internal American Buttress Standard reference: ANSI B1.9 :1973 Tolerance class: Class x l y ic Internal Right Hand American Buttress itch mm mm mm Description Grade I/C (inch) inch inch inch IR10ABUTT S " IR12ABUTT S " IRABUTT S " IR20ABUTT S " IR8ABUTT S " IR12ABUTT S " TI X Y 300

32 External AI Round (AIRD) Standard reference: AI Standard 5B :1979 Tolerance class: Standard AI Round x y ic l External Right Hand itch mm mm mm Description Grade I/C (inch) inch inch inch ER8AIRD S " ER10AIRD S " ER8AIRD S " TI X Y Internal AI Round (AIRD) Standard reference: AI Standard 5B :1979 Tolerance class: Standard AI Round x l y ic Internal Right Hand itch mm mm mm Description Grade I/C (inch) inch inch inch IR8AIRD S " IR10AIRD S " IR8AIRD S " TI X Y 301

33 External AI (Oilfield) Standard reference: AI Specification 7: 1990 Tolerance class: Standard AI x y ic l External itch Right Hand TI Taper X Y mm mm mm Description Grade IF Angle I/C (inch) inch inch ER5AI403 S ' 0.500" ER4AI383 S ' 0.500" ER4AI382 S ' 0.500" ER4AI502 S ' 0.500" ER4AI503 S ' 0.500" ER4AI382 S ' 0.625" ER4AI383 S ' 0.625" ER4AI502 S ' 0.625" ER4AI503 S ' 0.625"

34 Internal AI (Oilfield) Standard reference: AI Specification 7: 1990 Tolerance class: Standard AI x l y ic Internal itch Right Hand TI Taper X Y mm mm mm Description Grade IF Angle I/C (inch) inch inch IR5AI403 S ' 0.500" IR4AI383 S ' 0.500" IR4AI382 S ' 0.500" IR4AI502 S ' 0.500" IR4AI503 S ' 0.500" IR4AI382 S ' 0.625" IR4AI383 S ' 0.625" IR4AI502 S ' 0.625" IR4AI503 S ' 0.625"

35 AI Rotary Connections OILFIELD CONNECTORS Reference to art Number TI Taper I..F Connector No. or size AI V 0.038R 4 2 NC23, NC28, NC31, NC35, NC38, NC40, NC44, NC46 NC50, 4 FH, 2 3/8" IF, 3 1/2" IF, 4 1/2" IF, 5 1/2" IF AI V 0.038R 4 3 NC56, NC61, NC70, NC77 AI V /8" REG, 2 7/8" REG, 3 1/2" REG, 4 1/2" REG 3 1/2" FH, 4 1/2" FH AI V /2 REG, 7 5/8 REG, 8 5/8 REG AI V /8 REG, 5 1/2 FH, 6 5/8 FH AI V NC10, NC12, NC13, NC AI V Superceded by AI V 0.038R 304

36 AI Rotary Connections AI Rotary Connections AI Connections TI TF AI Code Stellram art Number Catalog age Number AI Number NC10 NC V AI551.5 NC23 NC V0.038R 4AI NC56 NC V0.038R 4AI AI Regular 2 3/8 REG 4 1/2 REG V AI /2 REG 7 5/8 REG, 8 5/8 REG V AI /8 REG V AI Internal Flush 2 3/8 IF 6 5/8 IF V0.038R 4AI Full Hole 3 1/2 FH, 4 1/2 FH V AI FH V0.038R 4AI /2 FH, 6 5/8 FH V AI Hughes External Flush 2 3/8, 2 7/ Drawing On Request 3 1/2, 4 1/ V0.038R 4AI Hughes Xtra Hole 2 7/ V0.038R 4AI Hughes Slim Hole 2 3/8 4 1/ V0.038R 4AI Hughes Double Streamline 3 1/2 5 1/ V0.038R 4AI Hughes H90 3 1/2 6 5/ Drawing On Request 7 8 5/ Drawing On Request Hughes Slimline H90 2 3/8 3 1/ Drawing On Request AC 2 3/8 AC 2 7/8 AC AC 305

37 Threading Toolholder Designation External E R K Internal I R Q 6 1 Utilisation 4 Minimum Bore Size (Internal) Inch 7 E I Internal: e.g. 083 = D 1 Ø 0.83 d External Internal D 1 Min. Bore 2 Hand 5 Tool Length inch L R D = 2.5 F = 3.25 = 7 R = 8 H = 4 K = 5 S = 10 T = 12 L L = 5.5 U = 14 M = 6 V = Left Hand Right Hand 6 Insert Size 3 Shank Size or Tool Diameter 3. Internal Shank Diameter e.g = d & 4. External Square Shank e.g x 0.75 b = 0.75 x 0.75 L IC mm Inch 06 5/ / 08U 3/ 11 1/4 3/8 1/2 U 1/2U 27 5/8 27U 5/8U IC L D 1 7 Option U d b b Neutral 306

38 Threading Toolholder Designation External E R K Internal I R 08 K Utilisation 5 Minimum Bore Size (Internal) Metric 8 E I Internal: e.g. 08 = D 1 Ø 8mm External Internal d 2 Hand L R D 1 Min. Bore 6 Tool Length inch Left Hand Right Hand D = 60 F = 80 H = 100 K = 125 L = 140 M = 150 = 170 Q = 180 R = 200 S = 250 T = 300 U = 350 V = 400 L 3 Option N = No Anvil 4 Shank Size or Tool Diameter 4. Internal Shank Diameter e.g. = d mm 4 & 5. External Square Shank e.g = 20 x 20mm 7 Insert Size L IC mm Inch 06 5/ / 08U 3/ 11 1/4 3/8 1/2 U 1/2U 27 5/8 27U 5/8U IC L D 1 8 Option U d Neutral 307

39 L 1 L 2 h 1 Threading External Toolholders ER/EL 90 (INCH) b f h Item Description Hand LH & RH External Square Shank Toolholders Insert Sizes & Types Dimensions (inch) h = h1 b f L1 L2 Anvil EL0500F LH EL EL0625H LH EL EL0750K LH EL EL1000M LH EL EL1250Q LH EL YI3 Anvil Type Anvil Hand LH ER0500F RH ER ER0625H RH ER ER0750K RH ER ER1000M RH ER ER1250Q RH ER EL1000M LH EL EL1250Q LH EL EL1500R LH EL ER1000M RH ER ER1250Q RH ER ER1500R RH ER EL1250Q27 LH EL EL1500R27 LH EL ER1250Q27 RH ER ER1500R27 RH ER YE3 YI4 YE4 YI5 YE5 RH LH RH LH RH Right Hand Toolholders and Inserts, Specify R = RH Left Hand Toolholders and Inserts, Specify L = LH 308

40 Threading Inch Spares ER/EL 90 L/R Spare arts (INCH) Item Description Insert Screw Insert Key Anvil Anvil Screw EL0500M EL0625M EL0750M EL1000M EL1250 ER0500M ER0625M ER0750M ER1000M ER1250 EL1000M EL1250 EL1500R ER1000M ER1250 ER1500R EL EL1500R27 ER ER1500R SA3T T10F YI SY3T SA3T T10F YE SY3T SA4T T20F YI SY4T SA4T T20F YE SY4T SA5T T25F YI SY5T SA5T T25F YE SY5T 309

41 L 1 L 2 h 1 Threading External Toolholders ER/EL 90 (METRIC) b f h Front view from step le Item Description Hand LH & RH External Square Shank Toolholders Insert Sizes & Types Dimensions (mm) h = h1 b f L1 L2 Anvil Anvil Type ERNM1010H11 RH ER ERN1010M RH ER Anvil Hand EL1212F LH EL ELH LH EL EL2020K LH EL EL2525M LH EL EL3232Q LH EL ER1212F RH ER ERH RH ER ER2020K RH ER ER2525M RH ER ER3232Q RH ER EL2525M LH EL EL3232Q LH EL EL4040R LH EL ER2525M RH ER ER3232Q RH ER ER4040R RH ER EL3232Q27 LH EL EL4040R27 LH EL ER3232Q27 RH ER ER4040R27 RH ER YI3 YE3 YI4 YE4 YI5 YE5 LH RH LH RH LH RH Right Hand Toolholders and Inserts, Specify R = RH Left Hand Toolholders and Inserts, Specify L = LH 310

42 Threading Metric Spares ER/EL 90 L/R Spare arts (METRIC) Item Description Insert Screw Insert Key Anvil Anvil Screw ERNM1010H SN2T T8F ERN1010M SA3T T10F EL 1212F EL H EL 2020K EL 2525M EL 3232Q ER 1212F SA3T T10F YI SY3T ER H ER 2020K ER 2525M ER 3232Q EL2525M SA3T T10F YE SY3T EL3232Q EL4040R ER2525M SA4T T20F YI SY4T ER3232Q ER4040R EL3232Q27 EL4040R SA4T SA5T T20F T25F YE4 YI SY4T SY5T ER3232Q27 ER4040R SA5T T25F YE SY5T 311

43 Threading Internal Threading Bars IR 90 (INCH) d 1 f D L 1 L Item Description Hand IR LH & RH Internal Threading Bars Insert Sizes & Types Min Bore Thread Ø A Dimensions (inch) ØD d 1 f L L 1 Through Coolant IRN H06 IR 06IR IRN K08 IR 08IR IRN K08 IR 08IR IRN K11 IR 11IR IRN M11 IR 11IR IRN M11 IR 11IR IRN M IR IR IRN Q IR IR IR Q IR IR IR R IR IR IR S IR IR IR T IR IR IRN Q IR 1R IR R IR 1R IR S IR 1R IR T IR 1R IR S27 IR 27IR IR T27 IR 27IR IL = Left Hand Tooling is available on request 312

44 Threading Inch Spares IR 90 L/R Spare arts (INCH) Item Description Insert Screw Insert Key Anvil Anvil Screw IRN H S6T T6 IR K08 IRN K S8T T6 IRN K11 IRN M11 IRN M11 IRN M IRN Q SN2T SA3T T8F T10F IR Q IR R IR S IR T IRN Q SA3T SA4T T10F T20F YI SY3T IR R IR S IR T IR S27 IR T SA4T SA5T T20F T25F YI4 YI SY4T SY5T 313

45 Threading Internal Threading Bars IR 90 (METRIC) d 1 f D L 1 L Item Description Hand IR LH & RH Internal Threading Bars Insert Sizes & Types Min Bore Thread Ø A Dimensions (mm) ØD d 1 f L L 1 Through Coolant IRN1206H06 IR 06IR IRN08K08 IR 08IR IRN10K08 IR 08IR IRN1013K11 IR 11IR IRN2013M11 IR 11IR IRNM11 IR 11IR IRN18M IR IR IRN2021Q IR IR IR2024Q IR IR IR2529R IR IR IR3236S IR IR IR4044T IR IR IRN2027Q IR IR IR2532R IR IR IR3239S IR IR IR4047T IR IR IR3240S27 IR 27IR IR4048T27 IR 27IR IL = Left Hand Tooling is available on request 314

46 Threading Metric Spares IR 90 L/R Spare arts (METRIC) Item Description Insert Screw Insert Key Anvil Anvil Screw IR1206H S6T T6 IRN08K08 IRN10K S8T T6 IRN1013K11 IRN2013M11 IRNM11 IRN18M IRN2021Q SN2T SA3T T8F T10F IR2024Q IR2529R IR3236S IR4044T IRN2027Q SA3T T10F YI SY3T IR2532R IR3239S IR4047T IR3240S27 IR4048T SA4T SA5T T20F T25F YI4 YI SY4T SY5T 315

47 Threading Internal Threading Bars IR 90 CF Anti Vibration (INCH) d 1 f D L 1 L Item Description Hand IR LH & RH Internal Threading Bars Insert Sizes & Types Min Bore Thread Ø A Dimensions (inch) ØD d 1 f L L 1 Through Coolant IRN H06CF IR 06IR IRN H08CF IR 08IR IRN H08CF IR 08IR IRN H11CF IR 11IR IRN M11CF IR 11IR IRN MCF IR IR IRN MCF IR IR IR RCF IR IR IL = Left Hand Tooling is available on request CF = Chatter Free Item Description Insert Screw IR 90 CF Spare arts (INCH) Insert Key IRN H06CF S6T T6 IRN H08CF IRN H08CF S8T T6 IRN H11CF IRN M11CF SN2T T8F IRN MCF IRN MCF SA3T T10F IR RCF SA3T T10F YI SY3T Anvil Anvil Screw 3

48 Threading Internal Threading Bars IR 90 CF Anti Vibration (METRIC) d 1 f D L 1 L Item Description Hand IR LH & RH Internal Boring Bars Insert Sizes & Types Min Bore Thread Ø A Dimensions (imm) ØD d 1 f L L 1 Through Coolant IRN1206H06CF IR 06IR IRN08H08CF IR 08IR IRN10H08CF IR 08IR IRN1013H11CF IR 11IR IRNM11CF IR 11IR IRN18MCF IR IR IRN2021MCF IR IR IR2024RCF IR IR IL = Left Hand Tooling is available on request CF = Chatter Free Item Description Insert Screw IR 90 CF Spare arts (METRIC) Insert Key IRN1206H06CF S6T T6 IRN08H08CF IRN10H08CF S8T T6 IRN1013H11CF IRNM11CF SN2T T8F IRN18MCF IRN2021MCF SA3T T10F IR2024RCF SA3T T10F YI SY3T Anvil Anvil Screw 317

49 Threading Anvil Selection With the Stellram threading system, a wide range of thread helix angles can be obtained without changing or modifying toolholders. This is obtained by simply changing the carbide anvil. 1.5 Standard Most toolholders are produced with 1.5 helix machined into the body. These tools are supplied with this angle as standard. Interchangeable anvils allow helix variations between +4.5 and 1.5 with the insert cutting edge remaining constant. 1.5 Standard Negative helix angles are used for producing right hand threads with left hand holders or left hand threads with right hand holders. Negative Helix ß Helix Angle Insert size Toolholder mm Inch Anvil art Numbers 3/8" EX RH / IN LH YE33 YE32 YE31 YE3 YE31N YE31.5N YE32N YE33N EX LH / IN RH YI33 YI32 YI31 YI3 YI31N YI31.5N YI32N YI33N 1/2" U 1/2" 27 5/8" 27U 5/8" EX RH / IN LH YE43 YE42 YE41 YE4 YE41N YE41.5N YE42N YE43N EX LH / IN RH YI43 YI42 YI41 YI4 YI41N YI41.5N YI42N YI43N EX RH / IN LH YE4U3 YE4U2 YE4U1 YE4U YE4U1N YE4U1.5N YE4U2N YE4U3N EX LH / IN RH YI4U3 YI4U2 YI4U1 YI4U YI4U1N YI4U1.5N YI4U2N YI4U3N EX RH / IN LH YE53 YE52 YE51 YE5 YE51N YE51.5N YE52N YE53N EX LH / IN RH YI53 YI52 YI51 YI5 YI51N YI51.5N YI52N YI53N EX RH / IN LH YE5U3 YE5U2 YE5U1 YE5U YE5U1N YE5U1.5N YE5U2N YE5U3N EX LH / IN RH YI5U3 YI5U2 YI5U1 YI5U YI5U1N YI5U1.5N YI5U2N YI5U3N Note: Standard toolholders are supplied with 1.5 helix angle as standard. Calculation of thread helix angle for a given thread Helix angle Tan 1 = Lead of the Thread 318

50 Threading Anvil Selection Flank Clearance Angle Selection ω ω INTERNAL EXTERNAL ω = 10 1,24 ω = φ 15 φ 10 α = 45 α = 7 ω ω ω = AMERICAN BUTTRESS ω = α = ω ω ω = ω = ISO UN ARTIAL 60 NT α = 30 α = 3 ω ω SAGE (DIN 513) ω = ω = 4 4 2α = 30 2α = 29 TRAEZOIDAL ACME STUB ACME 319

51 Threading Technical Information 321

52 Threading Technical Naming Nomenclature Depth of Thread External Thread Major ø itch ø Minor ø Internal Thread Depth of Thread itch Root Thread Angle Helix Angle Crest Depth of Thread The distance between the Crest and Root. itch The distance between two thread form peaks, defined as TI (thread per inch) in millimeters or as an inch decimal. itch or Effective Diameter Is where the theoretical cylinder diameter cuts the thread form, when the thread form width and groove depth are equal, applies to parallel/straight threads forms only. Helix Angle: (arallel/straight Thread Forms) Where the lead of the thread and the pitch diameter cylinder form a right angle triangle. The helix angle is the angle opposite the lead. Major Diameter The largest diameter of the thread form. Minor or Root Diameter The smallest diameter of the thread form. Thread Angle The included angle between the individual flanks. Root The inner most surface of the thread, connecting the flanks. Crest The outer most surface of the thread, connecting the flanks. Helix Angle π x D φ φ π x itch Diameter D = itch/effected Diameter = itch or Lead φ = Helix Angle D 3

53 Threading Technical itch & Lead with Multi Start Thread itch itch = Axial distance from one thread point to the corresponding point on the next form itch Lead Lead = itch x Number of starts Or the distance travelled in one rotation of the workpiece Example for two start thread The partial pro le insert does not crest or top the outer diameter of the thread pro le but, can be used on multi thread pitches with the same thread angle. The full form insert controls the complete thread pro le by cresting/topping the form. A different insert is required for each pitch. 323

54 Threading Technical Cutting Direction Direction of cut using LH & RH Tooling Right Hand Thread / Right Hand Tooling Right Hand Thread / Left Hand Tooling Feed Direction Towards the Chuck Left Hand Thread / Left Hand Tooling Feed Direction Towards the Tailstock Left Hand Thread / Right Hand Tooling 324

55 Threading Technical Radial InFeed RADIAL INFEED Most commonly used method on manual lathes. Equal wear on leading and trailing edge. Good surface finish on trailing edge. Use on work hardening materials. Use on short chipping materials. For pitches of less than 1,5mm or T..I. Modified Flank InFeed MODIFIED FLANK INFEED For threads greater than 1,5mm or T..I. Reduced cutting pressure on larger pitches. Reduced chatter. Directs chip away from the cutting edge. Displaced infeed angle improves surface finish. First choice for internal threading. Alternating Flank InFeed ALTERNATING FLANK INFEED Recommended for large pitches, square ACME and trapezoidal forms. Recommended for long chipping materials. Method divides the work between both flanks. Results in equal wear. Less cutting pressure. Not available on all lathes. 325

56 Threading Technical Helix Angle Calculation (Inch) Diameter (inch) itch ' 4 33' 5 27' ' 3 48' 4 33' 5 18' 6 33' ' 2 51' 3 25' 3 59' 4 33' 6 49' ' 2 ' 2 44' 3 11' 3 39' 5 27' ' 1 54' 2 17' 2 39' 3 2' 4 33' ' 1 38' 1 57' 2 17' 2 36' 3 54' ' 1 42' 1 42' 2 0' 2 17' 3 25' ' 1 ' 1 31' 1 46' 2 2' 3 2' 4 3' ' 1 ' 1 36' 1 49' 2 44' 3 39' ' 1 ' 1 28' 2 11' 2 55' ' 1 13' 1 49' 2 26' 3 2' 3 39' ' 1 33' 2 5' 2 36' 3 8' ' 2 17' 2 44' ' 1 37' 2 2' 2 26' ' 1 28' 1 49' 2 11' ' 1 31' 1 49' ' 1 18' 1 34' ' 1 ' ' 1 13' ' Calculation of thread helix angle for a given thread Helix angle Tan 1 = Lead of the Thread itch / Effective Diameter x Helix Angle Calculation (mm) Diameter mm itch ' 4 33' 5 27' 6 3 2' 3 48' 4 33' 5 18' 6 33' ' 2 51' 3 25' 3 59' 4 33' 6 49' ' 2 ' 2 44' 3 11' 3 39' 5 27' ' 1 54' 2 17' 2 39' 3 2' 4 33' ' 1 38' 1 57' 2 17' 2 36' 3 54' 1 8' 1 42' 1 42' 2 0' 2 17' 3 25' ' 1 ' 1 31' 1 46' 2 2' 3 2' 4 3' ' 1 ' 1 36' 1 49' 2 44' 3 39' ' 1 ' 1 28' 2 11' 2 55' ' 1 13' 1 49' 2 26' 3 2' 3 39' ' 1 33' 2 5' 2 36' 3 8' ' 2 17' 2 44' ' 1 37' 2 2' 2 26' ' 1 28' 1 49' 2 11' ' 1 31' 1 49' ' 1 18' 1 34' ' 1 ' ' 1 13' ' Calculation of thread helix angle for a given thread Helix angle Tan 1 = Lead of the Thread itch / Effective Diameter x 326