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Custom ODM/OEM JF-800 Bi-metal Bearing

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Focus on the research and development and production of various new self-lubricating bearings such as JF-800 Bi-metal Bearing.
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JF-800 Bi-metal Bearing Manufacturers

JF bimetallic composite bearing utilizes premium low-carbon steel as its base material, with a wear-resistant layer formed by sintering low-friction copper alloys (including CuSn6.5P0.1, CuPb10Sn10, CuSn8Ni, CuPb24Sn4, and AlSn20Cu) onto the surface.

To accommodate applications where continuous lubrication or relubrication is challenging, various lubrication features such as grooves, holes, and pockets can be machined into the copper alloy surface according to operational requirements. This material achieves excellent bonding strength and optimal load-bearing performance through a dual-stage process involving repeated sintering and extrusion.

Zhejiang Shuangnuo Bearing Technology Co., Ltd. Zhejiang Shuangnuo Bearing Technology Co., Ltd.
Zhejiang Shuangnuo Bearing Technology Co., Ltd.
Zhejiang Shuangnuo Bearing Technology Co., Ltd. is China JF-800 Bi-metal Bearing Manufacturers and Custom ODM/OEM JF-800 Bi-metal Bearing Factory, we are a manufacturer specializing in producing various self-lubricating copper alloy products using centrifugal casting, continuous casting, metal mold casting, and other processes. Its main products include brass, aluminum bronze, tin bronze, and others produced according to national standard grades. It processes and produces various solid inlaid self-lubricating bearing products on this basis . At the same time, it uses sintering technology to produce bimetallic products and many other types of products. Since its establishment nearly 10 years ago, the company has focused on the research development, and production of various new self-lubricating bearings.

In the process of product production, our company has always insisted on independent casting production of raw materials to ensure the quality of products from the source; during the casting process, the whole process is monitored, and the finished product is tested by spectrometer three times before, in and after the furnace to confirm the material composition of the product. The national testing agency is regularly commissioned to test the material composition and mechanical properties of the product, and authoritative test reports can be provided to customers in need; the company implements integrated production from material to finished product processing and has more than 80 sets of advanced CNC machine tools, CNC lathes, machining centers, and other major equipment. The strong production capacity ensures that the material production is organized for customers for the first time, shortening the production cycle.
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    Establishment

    Founded in 2014, Shuangnuo has 10 years of experience in the industry.

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    Advanced Equipment

    Strong production capacity ensures that we can organize material production for customers as soon as possible and shorten the production cycle.

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    Happy Clients

    There are more than 5,000 cooperative customers around the world.

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JF-800 Bi-metal Bearing Industry knowledge

In the field of heavy-duty mechanical engineering, the internal surface of a bushing is the critical interface where friction must be managed to prevent component failure. For Self-Lubricating Bi-metal Sleeve Bushings, surface modification is the primary method used to ensure long-term reliability under boundary lubrication conditions. Zhejiang Shuangnuo Bearing Technology Co., Ltd., with nearly 10 years of specialized research and development, utilizes advanced sintering and casting technologies to produce high-performance Self-Lubricating Bi-metal Sleeve Bushings. By precision-engineering oil indents and solid lubricant pockets into the alloy layer, Zhejiang Shuangnuo Bearing Technology Co., Ltd. provides comprehensive solutions that satisfy the demanding market requirements for maintenance-free operations.

The Engineering of Self-Lubricating Surfaces

Surface modifications serve as microscopic reservoirs that actively manage the distribution of lubricants during the sliding cycle:

  • Oil Indents (Diamond/Ball Patterns): These are geometric depressions pressed or machined into the copper alloy liner. During initial installation, these indents are filled with grease. As the shaft rotates, the grease is gradually released, maintaining a consistent lubrication film that reduces the friction coefficient.
  • Solid Lubricant Pockets (Graphite Inlays): For environments where liquid lubricants may evaporate or fail, Zhejiang Shuangnuo Bearing Technology Co., Ltd. produces solid-inlaid products. Graphite or PTFE plugs are embedded into the alloy matrix, forming a continuous self-lubricating transfer film on the mating surface through dry friction.
  • Interfacial Synergy: The bi-metal structure combines a rigid steel backing with a sintered bronze layer. The steel provides the structural skeleton, while the modified surface of the bronze layer handles the anti-friction duties, offering a high-strength alternative to solid bronze bushings.

Technical Parameter Comparison: Surface Modification Efficacy

Leveraging independent casting of raw materials and rigorous spectrometer monitoring, Zhejiang Shuangnuo Bearing Technology Co., Ltd. produces bushings with optimized mechanical properties. The following table compares different surface treatments for bi-metal bushings:

Parameter Standard Smooth Bi-metal Shuangnuo Indented Surface Shuangnuo Solid-Inlaid Bi-metal
Lubrication Type External Oil/Grease Pre-filled Grease (Reservoir) Maintenance-free (Solid)
Friction Coefficient 0.12 - 0.20 0.08 - 0.15 0.03 - 0.12
Max Surface Pressure (P) 120 N/mm² 120 N/mm² 70 N/mm²
Max Operating Temp ~150°C (Grease dependent) ~150°C (Grease dependent) Up to 300°C
Maintenance Cycle Frequent Extended Minimal / None

About Zhejiang Shuangnuo Bearing Technology Co., Ltd.

Zhejiang Shuangnuo Bearing Technology Co., Ltd. is a leading manufacturer specializing in self-lubricating copper alloy products via centrifugal, continuous, and metal mold casting. Based on nearly a decade of experience, we produce national standard grades of brass, aluminum bronze, and tin bronze. Our company implements integrated production—from raw material casting to finished product processing—utilizing more than 80 sets of advanced CNC machine tools and machining centers. We insist on monitoring the casting process via spectrometer testing three times (before, during, and after the furnace) to ensure chemical composition. Our business philosophy of "integrity-based moderation and harmony" drives us to provide personalized tailor-made designs and authoritative test reports to satisfy global customer needs.

Selection and Technical Fulfillment FAQ

  • How does Shuangnuo ensure the bond strength of the bi-metal layer?

    Our sintering technology creates a metallurgical bond between the steel backing and the copper alloy. This ensures that even when deep oil indents are machined into the surface, the alloy layer will not delaminate or crack under high impact loads.

  • Which indent pattern is best for my application?

    Diamond-shaped indents are typically preferred for oscillating movements in heavy-duty chassis, while spherical ball indents are ideal for rotary applications where grease retention is paramount. Zhejiang Shuangnuo Bearing Technology Co., Ltd. provides professional application solutions to select the right pattern for your product characteristics.

  • Why is independent casting important for bi-metal bushings?

    By casting our own raw materials, we control the purity and grain structure of the bronze. This ensures that the surface modification—whether indents or pockets—is carved into a uniform material, resulting in consistent wear resistance across the entire production batch.