{"id":366,"date":"2026-01-21T08:58:52","date_gmt":"2026-01-21T08:58:52","guid":{"rendered":"https:\/\/www.jccncmachining.com\/?post_type=material&p=366"},"modified":"2026-03-14T11:29:10","modified_gmt":"2026-03-14T03:29:10","slug":"pom-delrin-acetal","status":"publish","type":"material","link":"https:\/\/www.jccncmachining.com\/pt\/materials\/pom-delrin-acetal\/","title":{"rendered":"POM (Delrin\/Acetal)"},"content":{"rendered":"

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Available POM (Delrin) Grades<\/h3>\n\n\n\n\n\n\n\n\n
Grade<\/th>\nCommon Name<\/th>\nKey Characteristics<\/th>\nTypical Applications<\/th>\n<\/tr>\n<\/thead>\n
POM-H (Homopolymer)<\/strong><\/td>\nDelrin\u00ae 150<\/td>\nHigher mechanical strength, stiffness, and hardness than copolymer. Slight centerline porosity possible.<\/td>\nPrecision gears, bearings, stiff mechanical parts, check valves.<\/td>\n<\/tr>\n
POM-C (Copolymer)<\/strong><\/td>\nAcetal \/ Celcon\u00ae<\/td>\nBetter chemical resistance (especially to high pH) and free of centerline porosity. Easier to machine without voids.<\/td>\nPlumbing fittings, medical instrument handles, food processing parts.<\/td>\n<\/tr>\n
PTFE-Filled POM<\/strong><\/td>\nDelrin\u00ae AF<\/td>\nBlended with Teflon (PTFE) fibers. Extremely low coefficient of friction and high wear resistance.<\/td>\nHigh-speed sliding bearings, bushings, conveyor wear strips.<\/td>\n<\/tr>\n
Glass-Filled POM<\/strong><\/td>\nPOM-GF<\/td>\nReinforced with glass fibers for increased stiffness and dimensional stability. Abrasive to tools.<\/td>\nStructural parts requiring high rigidity and low creep.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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POM Machining Capabilities<\/h3>\n\n\n\n\n\n\n\n\n
Capability<\/th>\nTechnical Description<\/th>\nJucheng Advantage<\/th>\n<\/tr>\n<\/thead>\n
Precision Gear Machining<\/strong><\/td>\nMilling or hobbing high-precision plastic gears (spur, helical) directly from POM stock.<\/td>\nWe achieve high gear quality (AGMA standards) with low noise and excellent wear properties.<\/td>\n<\/tr>\n
High-Speed Turning<\/strong><\/td>\nRapid production of bushings and rollers using bar-fed CNC lathes.<\/td>\nOptimized for high-volume orders (50k+ pcs\/month) with extremely low unit costs.<\/td>\n<\/tr>\n
Complex Milling<\/strong><\/td>\n3\/4\/5-axis milling of intricate housings and clips with snap-fit features.<\/td>\nPOM’s stiffness allows for machining precise snap-fits that function reliably without breaking.<\/td>\n<\/tr>\n
Burr-Free Machining<\/strong><\/td>\nUsing sharp tooling and optimized paths to minimize burr formation, which can be an issue with plastics.<\/td>\nEliminates manual deburring for many parts, ensuring consistent edge quality and fit.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Fabrication Guidelines for POM<\/h3>\n

Clamping Sensitivity:<\/strong>
\nWhile stiffer than most plastics, POM can still deform. We use collets or soft jaws with controlled pressure. For flat parts, vacuum workholding is ideal to maintain flatness.<\/p>\n

Coolant Use:<\/strong>
\nPOM machines very freely, but coolant is recommended to flush chips and keep the part cool to maintain tight tolerances. Air blast is also effective for simple cuts.<\/p>\n

Tooling:<\/strong>
\nStandard sharp HSS or Carbide tools work best. High rake angles help slice the material cleanly. Dull tools will cause heat buildup, which can lead to POM outgassing (smelling like formaldehyde).<\/p>\n

Dimensional Stability:<\/strong>
\nPOM-C (Copolymer) is preferred for parts where centerline porosity (common in thick Delrin sections) could be an issue, such as parts requiring sealing or aesthetic perfection.<\/p>\n<\/div>\n

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Primary Application Industries<\/h3>\n

Automotive<\/strong>
\nKey Parts:<\/em> Fuel system components, window lift gears, door lock actuators.
\nWhy POM:<\/em> Resistance to fuels\/solvents and excellent fatigue endurance for moving parts.<\/p>\n

Consumer Electronics<\/strong>
\nKey Parts:<\/em> Zippers, clips, mechanical keyboard switches, rollers.
\nWhy POM:<\/em> Low friction (“slipperiness”) and high stiffness provide a premium tactile feel and durability.<\/p>\n

Industrial Machinery<\/strong>
\nKey Parts:<\/em> Conveyor links, bearings, wear strips, guide rails.
\nWhy POM:<\/em> Self-lubricating properties reduce the need for external grease and maintenance.<\/p>\n

Medical Devices<\/strong>
\nKey Parts:<\/em> Inhaler components, insulin pens, surgical instrument handles.
\nWhy POM:<\/em> Easy to sterilize (some grades), dimensionally stable, and resistant to cleaning agents.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Available POM (Delrin) Grades Grade Common Name Key Characteristics Typical Applications POM-H (Homopolymer) Delrin\u00ae 150 Higher mechanical strength, stiffness, and hardness than copolymer. Slight centerline porosity possible. Precision gears, bearings, stiff mechanical parts, check valves. POM-C (Copolymer) Acetal \/ Celcon\u00ae Better chemical resistance (especially to high pH) and free of centerline porosity. Easier to machine […]<\/p>\n","protected":false},"featured_media":367,"template":"","meta":[],"material_type":[8],"material_attribute":[],"application_feature":[23,20],"machining_process":[25,26,28,29],"class_list":["post-366","material","type-material","status-publish","has-post-thumbnail","hentry","material_type-plastic","application_feature-corrosion-resistant","application_feature-high-strength"],"_links":{"self":[{"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/material\/366","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/material"}],"about":[{"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/types\/material"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/media\/367"}],"wp:attachment":[{"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/media?parent=366"}],"wp:term":[{"taxonomy":"material_type","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/material_type?post=366"},{"taxonomy":"material_attribute","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/material_attribute?post=366"},{"taxonomy":"application_feature","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/application_feature?post=366"},{"taxonomy":"machining_process","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/pt\/wp-json\/wp\/v2\/machining_process?post=366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}