279 866-888-9600 gorillamill.com SPEEDS & FEEDS HIGH PERFORMANCE THREADMILLS SOLID VARIABLE HELIX/INDEX 2xD (INCH) RECOMMENDED SPEEDS & FEEDS FOR SOLID VARIABLE HELIX/INDEX 2 X DIAMETER DEEP, 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 10-32 10-28 12-28 1/4-28 10-24 12-24 5/16-24 3/8-24 1/4-20 1/2-20 7/16-20 Gray Cast Iron 300 0.0005 0.0006 0.0006 0.0006 0.0007 0.0010 0.0014 0.0015 0.0016 0.0018 0.0018 Ductile Iron 250 0.0005 0.0006 0.0006 0.0006 0.0007 0.0010 0.0014 0.0015 0.0016 0.0018 0.0018 Soft Steels, (A36,1018,8620,1045) 500 0.0005 0.0006 0.0006 0.0006 0.0007 0.0010 0.0014 0.0015 0.0016 0.0018 0.0018 Alloy Steels, (4340,4140) 350 0.0005 0.0006 0.0006 0.0006 0.0007 0.0010 0.0014 0.0015 0.0016 0.0018 0.0018 4140 Pre-Hard (28-32 Rc) 200 0.0003 0.0003 0.0004 0.0004 0.0005 0.0005 0.0007 0.0009 0.0010 0.0011 0.0011 Tool Steels (A2,D2,S7) 300 0.0005 0.0006 0.0006 0.0006 0.0007 0.0010 0.0014 0.0015 0.0016 0.0018 0.0018 Die Steels, (H13,P20) 300 0.0005 0.0006 0.0006 0.0006 0.0007 0.0010 0.0014 0.0015 0.0016 0.0018 0.0018 Stainless Steel, (303, 304, 316) 375 0.0005 0.0006 0.0006 0.0006 0.0007 0.0010 0.0014 0.0015 0.0016 0.0018 0.0018 Difficult Stainless Steel, (400 & PH Series) 300 0.0003 0.0003 0.0004 0.0004 0.0005 0.0005 0.0007 0.0009 0.0010 0.0011 0.0011 Stainless Steel (13-8) 150 0.0003 0.0003 0.0004 0.0004 0.0005 0.0005 0.0007 0.0009 0.0010 0.0011 0.0011 High Temp. Alloys 200 0.0005 0.0006 0.0006 0.0006 0.0007 0.0010 0.0014 0.0015 0.0016 0.0018 0.0018 Titanium (6AL4V) 200 0.0005 0.0006 0.0006 0.0006 0.0007 0.0010 0.0014 0.0015 0.0016 0.0018 0.0018 Inconel 718 200 0.0003 0.0003 0.0004 0.0004 0.0005 0.0005 0.0007 0.0009 0.0010 0.0011 0.0011 Inconel 625 175 0.0003 0.0003 0.0004 0.0004 0.0005 0.0005 0.0007 0.0009 0.0010 0.0011 0.0011 RECOMMENDED SPEEDS & FEEDS FOR SOLID VARIABLE HELIX/INDEX 2 X DIAMETER DEEP, 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 5/16-18 9/16-18 5/8-18 3/8-16 3/4-16 7/16-14 1/2-13 9/16-12 5/8-11 3/4-10 7/8-9 1.0- 8 Gray Cast Iron 300 0.0020 0.0021 0.0022 0.0023 0.0025 0.0025 0.0031 0.0039 0.0041 0.0044 0.0046 0.0048 Ductile Iron 250 0.0020 0.0021 0.0022 0.0023 0.0025 0.0025 0.0031 0.0039 0.0041 0.0044 0.0046 0.0048 Soft Steels, (A36,1018,8620,1045) 500 0.0020 0.0021 0.0022 0.0023 0.0025 0.0025 0.0031 0.0039 0.0041 0.0044 0.0046 0.0048 Alloy Steels, (4340,4140) 350 0.0020 0.0021 0.0022 0.0023 0.0025 0.0025 0.0031 0.0039 0.0041 0.0044 0.0046 0.0048 4140 Pre-Hard (28-32 Rc) 200 0.0014 0.0016 0.0018 0.0019 0.0020 0.0020 0.0022 0.0028 0.0030 0.0033 0.0035 0.0037 Tool Steels (A2,D2,S7) 300 0.0020 0.0021 0.0022 0.0023 0.0025 0.0025 0.0031 0.0039 0.0041 0.0044 0.0046 0.0048 Die Steels, (H13,P20) 300 0.0020 0.0021 0.0022 0.0023 0.0025 0.0025 0.0031 0.0039 0.0041 0.0044 0.0046 0.0048 Stainless Steel, (303, 304, 316) 375 0.0020 0.0021 0.0022 0.0023 0.0025 0.0025 0.0031 0.0039 0.0041 0.0044 0.0046 0.0048 Difficult Stainless Steel, (400 & PH Series) 300 0.0014 0.0016 0.0018 0.0019 0.0020 0.0020 0.0022 0.0028 0.0030 0.0033 0.0035 0.0037 Stainless Steel (13-8) 150 0.0014 0.0016 0.0018 0.0019 0.0020 0.0020 0.0022 0.0028 0.0030 0.0033 0.0035 0.0037 High Temp. Alloys 200 0.0020 0.0021 0.0022 0.0023 0.0025 0.0025 0.0031 0.0039 0.0041 0.0044 0.0046 0.0048 Titanium (6AL4V) 200 0.0020 0.0021 0.0022 0.0023 0.0025 0.0025 0.0031 0.0039 0.0041 0.0044 0.0046 0.0048 Inconel 718 200 0.0014 0.0016 0.0018 0.0019 0.0020 0.0020 0.0022 0.0028 0.0030 0.0033 0.0035 0.0037 Inconel 625 175 0.0014 0.0016 0.0018 0.0019 0.0020 0.0020 0.0022 0.0028 0.0030 0.0033 0.0035 0.0037 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.
2024 Gorilla Mill Fall Catalog
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