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Custom ODM/OEM Ball Bearing Cage

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Focus on the research and development and production of various new self-lubricating bearings such as Ball Bearing Cage.
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Ball Bearing Cage Manufacturers

FZH (copper-based), FZL (aluminum-based) and FZP (resin-based) steel balls remain solid, and their base materials are copper alloy, hard aluminum alloy and POM resin respectively. These steel balls are embedded in holes of appropriate size and special shape, and rolling bearing steel balls are installed in the holes.

This structure adopts the latest groove circumferential locking ball technology, which effectively solves the problem that traditional pressure locking balls and dent locking balls cannot completely prevent steel balls from falling off. A 90° stop structure is processed at the bottom of the hole to ensure that the steel ball rotates freely in the hole and will not fall off.

Since the diameter of the steel ball is greater than the wall thickness of the retaining ring, the steel ball will protrude from the inner and outer surfaces of the retaining ring when used, directly contacting the matching hole and shaft, so that the base (retaining ring) is suspended in the middle. The radius difference between the matching hole and the shaft is smaller than the diameter of the steel ball, that is, the steel ball adopts interference fit, with high assembly accuracy and flexible relative movement between the shaft and the hole. This product is an upgraded version in the field of retaining rings.

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 Ball Bearing Cage Manufacturers and Custom ODM/OEM Ball Bearing Cage 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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Ball Bearing Cage Industry knowledge

In high-precision die and mold components, the performance of a linear guidance system depends entirely on the accuracy of the ball retainer. Precision hole-site machining is the technical foundation that ensures each steel ball is held with the correct clearance to allow low-friction rotation while maintaining a "zero-gap" fit. Zhejiang Shuangnuo Bearing Technology Co., Ltd., a specialist with nearly 10 years of experience in self-lubricating copper alloys, utilizes advanced CNC machining centers to produce high-precision Brass Ball Cage Bearing components. By integrating raw material casting with high-speed precision drilling, Zhejiang Shuangnuo Bearing Technology Co., Ltd. ensures that every ball pocket achieves the strict circularity and positional tolerances required for high-frequency reciprocating motion.

Technical Requirements for Ball Cage Machining

The manufacturing of a brass ball cage requires a balance between material integrity and dimensional precision:

  • Circularity and Cylindricity: Each hole must be perfectly circular to ensure the steel ball rotates freely without binding. Zhejiang Shuangnuo Bearing Technology Co., Ltd. employs high-precision CNC lathes and machining centers to maintain sub-micron tolerances, preventing localized friction and heat buildup.
  • Hole-Site Positional Accuracy: The arrangement of the holes determines the load distribution. Our advanced equipment ensures that the steel balls are arranged in a specific helical or staggered pattern, maximizing the contact area and increasing the load-bearing capacity of the guidance system.
  • Ball Retention (The "Fit"): The holes are machined to a specific diameter that allows for a slight interference fit with the steel balls. This "locking" mechanism ensures the balls stay securely in the brass matrix during high-speed movement while maintaining zero resistance to rotation.

Technical Parameter Comparison: Precision Machined vs. Standard Ball Cages

By monitoring the casting process with spectrometers and utilizing integrated production, Zhejiang Shuangnuo Bearing Technology Co., Ltd. ensures the mechanical properties of the brass base cloth are optimized for machining. The following table highlights the benefits of precision hole-site machining:

Parameter Standard Grade Ball Cage Shuangnuo Precision Brass Ball Cage
Base Material General Brass Scrap Independent Cast Virgin Brass (Spectrometer Tested)
Hole Positional Tolerance ±0.05 mm ±0.01 mm or better
Surface Finish (Ra) 1.6 μm 0.4 - 0.8 μm (High precision)
Steel Ball Arrangement Standard Rows Staggered/Helical for uniform load
Motion Stability Moderate (Prone to vibration) Excellent (Zero-gap guidance)

Quality Assurance at Zhejiang Shuangnuo Bearing Technology Co., Ltd.

Zhejiang Shuangnuo Bearing Technology Co., Ltd. maintains a strict quality control protocol by insisting on independent casting of raw materials. Our casting process is monitored throughout, and the finished material is tested by spectrometer three times (before, during, and after the furnace) to ensure the alloy composition—whether brass, aluminum bronze, or tin bronze—meets national standard grades. With more than 80 sets of advanced CNC machine tools and machining centers, the company provides integrated production that guarantees shortened production cycles and high-precision results. We regularly commission national testing agencies to verify mechanical properties, providing authoritative reports to support our first-class products and services.

Application Dynamics and Technical FAQ

  • How does the brass matrix handle heat in high-speed motion?

    Brass is chosen for its superior thermal conductivity. Zhejiang Shuangnuo Bearing Technology Co., Ltd. uses specific copper alloy grades that rapidly dissipate frictional heat generated by the steel balls, maintaining dimensional stability during high-frequency reciprocating tasks.

  • Why is the "spectrometer test" critical for ball cages?

    Precise machining requires a uniform material hardness. By confirming the material composition three times in the furnace, we ensure the brass is neither too soft (causing ball loss) nor too brittle (causing cracking during drilling).

  • Can Shuangnuo customize ball cage dimensions?

    Yes. Based on our philosophy of "integrity-based moderation and harmony," we carry out personalized tailor-made design and customization according to the characteristics of the customer's guide pillars and bushings, selecting the optimal steel ball density and cage material for the application.