Sintered Gears Bushings Overview Sintered self-lubricating gears, bushings, and bearings refer to powder metallurgy components with porosity and impregnated lubricants to provide continuous lubrication during operation without needing external lubricant replenishment. Compared with solid gears, bushings, and bearings, they are lightweight, porous, self-lubricating, and high-strength. We usually use two kinds of powder metal manufacturing methods to produce sintered gears and self-lubricating bushings, namely metal injection molding and powder compression molding , which belong to the powder metallurgy process. Solid metal gear, bushings manufacturing methods The primary manufacturing processes for solid metal gears and bushings each offer distinct advantages. Gear machining allows high-precision profiling and finishing, but casting provides near-net shape capability. Forging improves strength through grain flow shaping. Bushing machining enables tight tolerances and surface finish
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