283 866-888-9600 gorillamill.com SPEEDS & FEEDS HIGH PERFORMANCE THREADMILLS DEEP THREADING – SINGLE PITCH (INCH) RECOMMENDED SPEEDS & FEEDS FOR DEEP THREADING, SINGLE PITCH, INCH, CHIMP LOAD PER TOOTH RECOMMENDED SPEEDS & FEEDS FOR DEEP THREADING, SINGLE PITCH, INCH, CHIMP LOAD PER TOOTH TOOL ENTRY SHOULD BE SET AT 60% OF THE FEED RATE. THEN GO TO 100% WHEN ENGAGED WITH MATERIAL. SFM 1/4-20 1/4-28 5/16-18 5/16-24 3/8-16 3/8-24 7/16-14 7/16-20 Gray Cast Iron 300 0.0007 0.0007 0.0010 0.0010 0.0014 0.0013 0.0018 0.0017 Ductile Iron 250 0.0007 0.0007 0.0010 0.0010 0.0014 0.0013 0.0018 0.0017 Soft Steels, (A36,1018,8620,1045) 500 0.0010 0.0010 0.0015 0.0013 0.0018 0.0016 0.0020 0.0018 Alloy Steels, (4340,4140) 350 0.0010 0.0010 0.0015 0.0013 0.0018 0.0016 0.0020 0.0018 4140 Pre-Hard (28-32 Rc) 200 0.0007 0.0007 0.0010 0.0010 0.0014 0.0013 0.0018 0.0017 Tool Steels (A2,D2,S7) 300 0.0010 0.0010 0.0015 0.0013 0.0018 0.0016 0.0020 0.0018 Die Steels, (H13,P20) 300 0.0010 0.0010 0.0015 0.0013 0.0018 0.0016 0.0020 0.0018 Stainless Steel, (303, 304, 316) 375 0.0007 0.0007 0.0010 0.0010 0.0014 0.0013 0.0018 0.0017 Difficult Stainless Steel, (400 & PH Series) 300 0.0007 0.0007 0.0010 0.0010 0.0014 0.0013 0.0018 0.0017 Stainless Steel (13-8) 150 0.0007 0.0007 0.0010 0.0010 0.0014 0.0013 0.0018 0.0017 High Temp. Alloys 200 0.0010 0.0010 0.0015 0.0013 0.0018 0.0016 0.0020 0.0018 Titanium (6AL4V) 200 0.0007 0.0007 0.0010 0.0010 0.0014 0.0013 0.0018 0.0017 Inconel 718 200 0.0007 0.0007 0.0010 0.0010 0.0014 0.0013 0.0018 0.0017 Inconel 625 175 0.0007 0.0007 0.0010 0.0010 0.0014 0.0013 0.0018 0.0017 TOOL ENTRY SHOULD BE SET AT 60% OF THE FEED RATE. THEN GO TO 100% WHEN ENGAGED WITH MATERIAL. SFM 1/2-13 1/2-20 9/16-12 9/16-18 5/8-11 5/8-18 3/4-10 3/4-16 Gray Cast Iron 300 0.0020 0.0018 0.0024 0.0024 0.0028 0.0029 0.0032 0.0032 Ductile Iron 250 0.0020 0.0018 0.0024 0.0024 0.0028 0.0029 0.0032 0.0032 Soft Steels, (A36,1018,8620,1045) 500 0.0022 0.0020 0.0026 0.0026 0.0031 0.0031 0.0035 0.0037 Alloy Steels, (4340,4140) 350 0.0022 0.0020 0.0026 0.0026 0.0031 0.0031 0.0035 0.0037 4140 Pre-Hard (28-32 Rc) 200 0.0020 0.0018 0.0024 0.0024 0.0028 0.0029 0.0032 0.0032 Tool Steels (A2,D2,S7) 300 0.0022 0.0020 0.0026 0.0026 0.0031 0.0031 0.0035 0.0037 Die Steels, (H13,P20) 300 0.0022 0.0020 0.0026 0.0026 0.0031 0.0031 0.0035 0.0037 Stainless Steel, (303, 304, 316) 375 0.0020 0.0018 0.0024 0.0024 0.0028 0.0029 0.0032 0.0032 Difficult Stainless Steel, (400 & PH Series) 300 0.0020 0.0018 0.0024 0.0024 0.0028 0.0029 0.0032 0.0032 Stainless Steel (13-8) 150 0.0020 0.0018 0.0024 0.0024 0.0028 0.0029 0.0032 0.0032 High Temp. Alloys 200 0.0022 0.0020 0.0026 0.0026 0.0031 0.0031 0.0035 0.0037 Titanium (6AL4V) 200 0.0020 0.0018 0.0024 0.0024 0.0028 0.0029 0.0032 0.0032 Inconel 718 200 0.0020 0.0018 0.0024 0.0024 0.0028 0.0029 0.0032 0.0032 Inconel 625 175 0.0020 0.0018 0.0024 0.0024 0.0028 0.0029 0.0032 0.0032 If the RPM’s are to high for your machine, run max RPM you are comfortable with. Note that these Chip Loads are Chip Loads Per Tooth. SFM should be calculated on minor diameter. CLICK HERE FOR ONLINE SPEEDS & FEEDS CALCULATOR
2024 Gorilla Mill Spring Catalog
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