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HRC55 Series<\/span><\/p>\n4-Flute Solid Carbide Square End Mill<\/h2>\n Designed for stable CNC machining of carbon steel, alloy steel and selected pre-hardened mold steel. The rigid four-flute geometry supports accurate shoulders, consistent finishing and reliable performance in general steel machining.<\/p>\n<\/div>\n
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END PROFILE<\/span>Square \/ Flat End<\/strong><\/div>\nFLUTES<\/span>4 Flutes<\/strong><\/div>\nDIAMETER RANGE<\/span>\u00d81\u2013\u00d820 mm<\/strong><\/div>\nWORKPIECE<\/span>Steel \/ Alloy Steel<\/strong><\/div>\n<\/div>\n<\/section>\n<\/p>\n\n\n
Product Views<\/span><\/p>\nProduct Details & Configuration<\/h3>\n<\/div>\n\n
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Standard Diameter Range<\/p>\n<\/div>\n
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Precision-Ground Geometry<\/p>\n<\/div>\n
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Individual Protective Packaging<\/p>\n<\/div>\n<\/div>\n<\/section>\n
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Core Design<\/span><\/p>\n\u0627\u0644\u0645\u064a\u0632\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h3>\n<\/div>\n\n
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01<\/span><\/p>\n\n
Fine-Grain Carbide<\/h4>\n Provides the rigidity, edge strength and wear resistance required for stable steel machining.<\/p>\n<\/div>\n<\/div>\n
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02<\/span><\/p>\n\n
Balanced 4-Flute Geometry<\/h4>\n Four cutting edges support stable engagement and efficient material removal.<\/p>\n<\/div>\n<\/div>\n
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03<\/span><\/p>\n\n
Precision Square End<\/h4>\n Supports accurate 90\u00b0 shoulders, pockets and flat-bottom machining features.<\/p>\n<\/div>\n<\/div>\n
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04<\/span><\/p>\n\n
Flexible OEM Options<\/h4>\n Dimensions, coating, laser marking, labels and packaging can be configured to order.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n
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Performance Details<\/span><\/p>\n\u0645\u0632\u0627\u064a\u0627 \u0627\u0644\u0645\u0646\u062a\u062c<\/h3>\n Every structural detail is designed to support stable and repeatable machining.<\/p>\n<\/div>\n
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Advantage 01<\/span><\/p>\nStable Four-Flute Cutting<\/h4>\n The rigid carbide body and balanced flute arrangement help control vibration and maintain stable cutting engagement during side milling, profiling and finishing.<\/p>\n
\nBalanced cutting-edge load<\/li>\n High rigidity for steel machining<\/li>\n Consistent engagement under suitable parameters<\/li>\n<\/ul>\n<\/div>\n<\/p>\n
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Advantage 02<\/span><\/p>\nWear-Resistant Cutting Edge<\/h4>\n Fine-grain carbide and application-matched coating options help control progressive edge wear and support repeatable results throughout the production cycle.<\/p>\n
\nFine-grain carbide substrate<\/li>\n Multiple coating options<\/li>\n Reliable edge quality and service life<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/p>\n
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Advantage 03<\/span><\/p>\nAccurate Square-End Geometry<\/h4>\n Precision-ground bottom edges and square-end geometry support dimensional control, clean shoulders and consistent surface quality.<\/p>\n
\nAccurate 90\u00b0 shoulder machining<\/li>\n Flat-bottom pocket capability<\/li>\n Consistent dimensions and finish<\/li>\n<\/ul>\n<\/div>\n<\/p>\n
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Advantage 04<\/span><\/p>\nFlexible OEM Supply<\/h4>\n Standard sizes and customized configurations are available for distributors, cutting-tool brands and industrial buyers.<\/p>\n
\nCustom dimensions and flute lengths<\/li>\n Optional coating and laser marking<\/li>\n Customized labels and packaging<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<\/p>\n\n\n
Product Showcase<\/span><\/p>\nHRC55 Square End Mill Product Display<\/h3>\n<\/div>\n\n
HRC55 4-Flute Solid Carbide Square End Mill Product Details<\/p>\n<\/div>\n<\/section>\n
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Where It Works<\/span><\/p>\nRecommended Applications<\/h3>\n<\/div>\n\n
Side Milling<\/div>\n
90\u00b0 Shoulders<\/div>\n
Pocket Milling<\/div>\n
Slotting & Profiling<\/div>\n
Steel Finishing<\/div>\n<\/div>\n<\/section>\n
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Application Note<\/strong><\/p>\nHRC55 indicates the recommended workpiece-hardness range for this product series under suitable cutting conditions. Actual performance depends on material grade, tool diameter, cutting parameters, machine rigidity, tool-holder condition, coolant strategy and application requirements.<\/p>\n<\/div>\n<\/section>\n<\/div>\n
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![\"HRC55](\"https:\/\/hycuttingtools.com\/wp-content\/uploads\/2026\/03\/20190627_200525-scaled.jpg\" "\\"\\"")
![\"HRC55](\"https:\/\/hycuttingtools.com\/wp-content\/uploads\/2026\/09\/square-end-mill-HRC55-different-sizes.png\" "\\"\\"")
![\"Close-up](\"https:\/\/hycuttingtools.com\/wp-content\/uploads\/2026\/03\/4-flutes-square-end-mill-real1-scaled.png\" "\\"\\"")
![\"HRC55](\"https:\/\/hycuttingtools.com\/wp-content\/uploads\/2026\/03\/4-flutes-square-end-mill-real2-scaled.png\" "\\"\\"")
![\"HRC55](\"https:\/\/hycuttingtools.com\/wp-content\/uploads\/2026\/03\/key-features-HRC55-2-Flute-e1773223551419.png\" "\\"\\"")
![\"Inch-size](\"https:\/\/hycuttingtools.com\/wp-content\/uploads\/2026\/01\/Inch-Size-4-Flutes-Square-End-Mills-HRC55-1_\u526f\u672c-scaled.webp\" "\\"\\"")
![\"Solid](\"https:\/\/hycuttingtools.com\/wp-content\/uploads\/2025\/10\/20190627_195514-scaled.jpg\" "\\"\\"")
![\"Coated](\"https:\/\/hycuttingtools.com\/wp-content\/uploads\/2026\/01\/Dlc-coated-3-Flute-Hrc60-Solid-Carbide-7_\u526f\u672c-scaled-e1788364061966.webp\" "\\"\\"")