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13 processing steps for oil-free bearings

Oil-free bearings, namely oil-free bushings, also called oil-free sliding bearings, are a high-performance fixed lubrication product made of solid lubricants such as graphite inlaid on a high-strength brass base. So, what is the processing process like?

Process 1: Raw Material Preparation
Initiate the production journey by smelting and casting copper and other crucial metals into components such as sleeves, tubes, and rods, meticulously examining samples for composition and mechanical properties.
Process 2: Precision Cutting
Utilize cutting machinery to shape pipes and bars into precise raw material sizes required for subsequent processing steps.
Process 3: Semi-Cost Blanking
Employ lathes to fashion centrifugal casting materials, cut pipe materials, and bar materials into semi-cost blanks, subjecting them to random inspections for size and appearance before storage.
Process 4: Blank Evaluation
Before production, verify the blank size and margin against standards, then utilize automatic drilling machines to create honeycomb holes, constituting roughly 20% of the product's surface area.
Process 5: Solid Lubricant Embedding
Embed solid lubricant, previously treated with adhesive, into the honeycomb holes of the copper alloy, ensuring proper protrusion of graphite on both inner and outer surfaces.
Process 6: Drying Phase
Facilitate solidification of the lubricant and alloy matrix by subjecting the product to drying either through a dryer for approximately three hours or in a dry environment for a day.
Process 7: Precision Lathe Cleanup
Utilize lathes to meticulously clean protruding lubricant and residual copper alloy, while conducting random size and appearance checks on semi-finished products.
Process 8: CNC Machining
Employ CNC machine tools to refine inner and outer diameters, chamfers, and end faces to precise specifications, simultaneously conducting initial and random inspections.
Process 9: Secondary Lathe Operations
Execute cutting, chamfering, and flat end surface processes through lathe operations, typically integrated into two-in-one processing methods.
Process 10: Milling and Drilling Operations
Utilize milling machines and automatic drilling machines to mill end faces and flange faces, as well as to create positioning holes.
Process 11: Lubrication
Employ a vacuum oil pumping machine to infuse lubricating oil into the pores of the solid lubricant, ensuring optimal oil retention and extending product longevity.
Process 12: Comprehensive Inspection
Products undergo meticulous inspection for full size and quantity in dedicated inspection rooms, effectively eliminating any substandard items from circulation.
Process 13: Packaging and Storage
Once qualified, products are meticulously packaged and stored in warehouses, either bundled in plastic film rolls or individually ensconced within polyethylene plastic nets.
From the initial shaping of raw materials to the final inspection and packaging, each process in the intricate journey of crafting oil-free bearings is imbued with precision and dedication, ensuring the delivery of top-tier lubrication solutions to industries worldwide.
13 processing steps for oil-free bearings
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