{"id":914,"date":"2026-03-17T17:45:57","date_gmt":"2026-03-17T09:45:57","guid":{"rendered":"https:\/\/www.jccncmachining.com\/?post_type=material_model&p=914"},"modified":"2026-03-17T17:45:57","modified_gmt":"2026-03-17T09:45:57","slug":"bronze-filled-ptfe","status":"publish","type":"material_model","link":"https:\/\/www.jccncmachining.com\/ja\/materials\/ptfe-teflon\/bronze-filled-ptfe\/","title":{"rendered":"Bronze Filled PTFE"},"content":{"rendered":"

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PTFE \/ Teflon Material Variants<\/h3>\n\n\n\n\n\n\n\n
Grade<\/th>\nCommon Name<\/th>\nKey Characteristics<\/th>\nTypical Applications<\/th>\n<\/tr>\n<\/thead>\n
Bronze Filled PTFE<\/strong><\/td>\nBearing Grade (40%\/60%)<\/td>\nHighest wear resistance and thermal conductivity. Best for high-load sliding. Dark brown\/metallic appearance.<\/td>\nHydraulic guide rings, piston seals, bridge bearing pads, wear strips.<\/td>\n<\/tr>\n
Virgin PTFE<\/strong><\/td>\nPure Unfilled<\/td>\nLowest friction and highest purity. Excellent dielectric properties. FDA compliant.<\/td>\nMedical components, chemical seals, electrical insulators.<\/td>\n<\/tr>\n
Glass Filled PTFE<\/strong><\/td>\nReinforced Teflon<\/td>\nLower “cold flow” (creep) than virgin. Improved compressive strength. Chemical resistance maintained.<\/td>\nValve seats, structural gaskets, spacers.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Bronze Filled PTFE 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
High-Precision Bearing Turning<\/strong><\/td>\nTurning internal and external diameters for large-scale hydraulic bushings with tight clearances.<\/td>\nWe achieve exceptional roundness and surface finishes (Ra 0.8\u03bcm), ensuring smooth sliding motion and reduced seal wear.<\/td>\n<\/tr>\n
Precision Wear Pad Milling<\/strong><\/td>\nMilling flat sliding surfaces and lubricant grooves into bronze-filled PTFE sheets.<\/td>\nOur vacuum workholding ensures absolute parallelism (+\/- 0.03mm) across large wear plates, critical for industrial slide ways.<\/td>\n<\/tr>\n
Heavy-Wall Seal Boring<\/strong><\/td>\nBoring thick-walled dynamic seals and piston rings with high diameter consistency.<\/td>\nJucheng utilizes vibration-dampened boring bars to prevent chatter, ensuring a perfect “crush-fit” for high-pressure hydraulic systems.<\/td>\n<\/tr>\n
Complex Lip Profiling<\/strong><\/td>\nCNC turning intricate “V-ring” or “U-cup” lip geometries in reinforced bearing materials.<\/td>\nOur ultra-sharp diamond-polished inserts ensure the bronze particles are cut cleanly, preventing the “pitting” that causes seal leakage.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Fabrication Guidelines for Bronze Filled PTFE<\/h3>\n

Thermal Conductivity Advantage:<\/strong>
\nThe bronze content allows heat to dissipate much faster than virgin PTFE. Tip:<\/strong> This reduces the risk of thermal expansion-induced binding in high-speed bearings, but the part must still be monitored for size during machining.<\/p>\n

Tool Wear & Abrasiveness:<\/strong>
\nBronze is abrasive to standard tools. Tip:<\/strong> We use high-grade carbide or PCD (Diamond) tooling to maintain sharp edges. Dull tools will cause the PTFE to smear over the bronze particles, ruining the bearing’s self-lubricating effectiveness.<\/p>\n

Weight & Handling:<\/strong>
\nBronze-filled PTFE is significantly heavier (higher density) than standard plastics. Tip:<\/strong> We adjust our workholding and spindle acceleration parameters to account for the increased mass of the billets, ensuring safe and accurate turning.<\/p>\n

Coolant Strategy:<\/strong>
\nTo maintain a pristine surface, we use high-volume air blast or specialized synthetic coolants. This prevents bronze chips from scratching the soft PTFE matrix during the final finishing passes.<\/p>\n<\/div>\n

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Primary Applications<\/h3>\n

Hydraulics & Pneumatics<\/strong>
\nPiston rings, guide strips, and backup rings that must operate under high pressure with minimum friction and maximum wear life.<\/p>\n

Automotive Suspension<\/strong>
\nShock absorber bushings and steering rack bearings that require durability and maintenance-free operation over thousands of miles.<\/p>\n

Civil Engineering<\/strong>
\nSliding bearing plates for bridges and building expansion joints that must support massive loads while allowing for thermal movement.<\/p>\n

Heavy Industry Pumps<\/strong>
\nThrust washers and wear rings in high-speed centrifugal pumps where heat dissipation and self-lubrication are critical for reliability.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

PTFE \/ Teflon Material Variants Grade Common Name Key Characteristics Typical Applications Bronze Filled PTFE Bearing Grade (40%\/60%) Highest wear resistance and thermal conductivity. Best for high-load sliding. Dark brown\/metallic appearance. Hydraulic guide rings, piston seals, bridge bearing pads, wear strips. Virgin PTFE Pure Unfilled Lowest friction and highest purity. Excellent dielectric properties. FDA compliant. Medical components, chemical seals, electrical insulators. Glass Filled PTFE Reinforced Teflon Lower “cold flow” (creep) than virgin. Improved compressive strength. Chemical resistance maintained. Valve seats, structural gaskets, spacers. Bronze Filled PTFE Machining Capabilities Capability Technical Description Jucheng Advantage High-Precision Bearing Turning Turning internal and external diameters for large-scale hydraulic bushings with tight clearances. We achieve […]<\/p>\n","protected":false},"featured_media":917,"template":"","meta":[],"class_list":["post-914","material_model","type-material_model","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.jccncmachining.com\/ja\/wp-json\/wp\/v2\/material_model\/914","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jccncmachining.com\/ja\/wp-json\/wp\/v2\/material_model"}],"about":[{"href":"https:\/\/www.jccncmachining.com\/ja\/wp-json\/wp\/v2\/types\/material_model"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jccncmachining.com\/ja\/wp-json\/wp\/v2\/media\/917"}],"wp:attachment":[{"href":"https:\/\/www.jccncmachining.com\/ja\/wp-json\/wp\/v2\/media?parent=914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}