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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.
  • 0+
    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

Ball Bearing Cage Manufacturer and Custom ODM/OEM Supplier

Zhejiang Shuangnuo Bearing Technology Co., Ltd. is a specialized Ball Bearing Cage manufacturer and supplier based in China. We engineer and produce high-precision ball retainers for linear motion systems, die sets, and heavy-duty industrial equipment. Our range includes FZ-series steel ball retainers with bronze, aluminum, or POM resin bases, each designed to deliver reliable guidance, low friction, and long service life in demanding applications.

With nearly a decade of experience in self-lubricating copper alloys and advanced CNC machining, we provide integrated production from raw material casting to finished components. Our factory in Zhejiang operates over 80 CNC machines and machining centers, enabling us to maintain tight tolerances and support custom ODM/OEM projects with consistent quality.

Our Ball Bearing Cage Range

We supply ball cages in several material configurations to match different load, speed, and environmental conditions:

  • FZH (Copper-Based): Bronze matrix for high load capacity and excellent thermal conductivity. Suitable for heavy-duty machinery and high-temperature environments.
  • FZL (Aluminum-Based): Lightweight aluminum alloy for applications requiring reduced inertia and high-speed operation.
  • FZP (Resin-Based): POM resin for corrosion resistance and low noise, ideal for clean environments and food-grade machinery.

Each type uses precision-machined holes with a 90° stop structure that securely retains steel balls while allowing free rotation. The balls protrude slightly from the cage surface to contact the shaft and housing directly, providing a zero-gap guidance system.

Application Fit and Engineering Value

Our ball bearing cages are used in linear guides, die sets, stamping presses, robotics, and automation equipment where precise reciprocating motion is critical. The key engineering advantage lies in our ability to customize hole patterns, ball density, and material selection based on your specific guide pillar and bushing dimensions.

We work directly with your drawings or samples to optimize the cage for load distribution and motion smoothness. Our CNC machining centers achieve hole positional tolerances of ±0.01 mm or better, with surface finishes down to Ra 0.4–0.8 μm, ensuring consistent performance in high-frequency applications.

Critical Specifications and Quality Assurance

Quality starts with material integrity. We independently cast our copper alloys and verify composition with spectrometer testing three times during the melting process. This ensures uniform hardness and machinability, preventing issues like ball dropout or cracking during drilling.

Parameter Standard Grade Shuangnuo Precision
Base Material General Brass Scrap Independent Cast Virgin Alloy (Spectrometer Tested)
Hole Positional Tolerance ±0.05 mm ±0.01 mm or better
Surface Finish (Ra) 1.6 μm 0.4–0.8 μm
Steel Ball Arrangement Standard Rows Staggered/Helical for Uniform Load

We also commission national testing agencies to verify mechanical properties and provide authoritative reports upon request. Our integrated production—from casting to final machining—shortens lead times and ensures traceability.

Configuration Options and Customization

Every application has unique requirements. We offer the following customization options:

  • Material selection: Choose from brass, aluminum bronze, tin bronze, or POM resin based on load, speed, and environment.
  • Ball diameter and density: We adjust the number and size of steel balls to optimize load capacity and motion smoothness.
  • Dimensional tailoring: We machine cages to your exact shaft and housing diameters, with custom lengths and hole patterns.
  • Surface treatment: Additional coatings for corrosion resistance or reduced friction are available.

Our engineering team reviews your application to recommend the most suitable configuration, ensuring the cage integrates seamlessly with your existing system.

Integration, Installation, and Maintenance

Ball bearing cages are typically installed between a guide pillar and bushing. The interference fit of the steel balls ensures high assembly accuracy, while the floating cage design allows for flexible relative movement. We provide installation guidance and recommend proper lubrication to maximize service life.

Maintenance is minimal, but periodic inspection of ball retention and surface wear is advised. Our retainers are designed for easy replacement, and we stock spare parts for common sizes to minimize downtime.

Information We Use to Configure Your Solution

To prepare an accurate proposal and quotation, we need the following details:

  • Application type (e.g., die set, linear guide, automation equipment)
  • Shaft diameter and housing bore dimensions
  • Required cage length and wall thickness
  • Operating load, speed, and temperature range
  • Preferred base material (copper, aluminum, or resin)
  • Ball diameter and number of balls, if specified
  • Environmental factors (moisture, chemicals, cleanliness)
  • Any existing drawings or samples for reference

With this information, we can recommend the optimal design and provide a detailed quotation with lead time.

Quality Assurance and Compliance

Our manufacturing processes are monitored throughout, and we adhere to national standards for material grades. We can provide material composition reports and mechanical property certificates from independent testing agencies. Our quality management system ensures consistency across batches, and we conduct final inspections before shipment.

Documentation, Training, and Support

We supply technical datasheets, installation instructions, and material certificates with each order. Our team is available for pre-sales engineering consultations and post-sales support, including troubleshooting and replacement guidance. For custom projects, we provide samples for validation before mass production.

Packaging and Delivery

Our ball bearing cages are packaged in protective materials to prevent damage during transit. We offer standard export packaging and can customize packaging for specific logistics requirements. Delivery terms are agreed upon during quotation, with options for air, sea, or express shipping.

Frequently Asked Questions

Q: What is the difference between FZH, FZL, and FZP ball retainers?

A: FZH uses a copper alloy base for high load capacity and thermal conductivity. FZL uses aluminum for lightweight and high-speed applications. FZP uses POM resin for corrosion resistance and low noise. We help you choose based on your operating conditions.

Q: Can you customize the hole pattern and ball size?

A: Yes, we can customize the arrangement, number, and size of steel balls to optimize load distribution and motion characteristics for your specific guide system.

Q: How do you ensure the steel balls do not fall out during operation?

A: Our cages use a 90° stop structure at the bottom of each hole, which locks the ball securely while allowing free rotation. This prevents dropout even under high-speed reciprocating motion.

Q: What tolerances can you achieve on hole positioning?

A: Our CNC machining centers achieve hole positional tolerances of ±0.01 mm or better, ensuring consistent ball alignment and smooth operation.

Q: Do you provide material test reports?

A: Yes, we perform spectrometer testing on every melt and can provide material composition reports. We also commission national testing agencies for mechanical property verification and can supply authoritative reports on request.

Q: What is the typical lead time for custom ball bearing cages?

A: Lead time depends on the complexity and quantity. With our integrated production, we can often start material casting immediately upon order confirmation. We provide a specific lead time with each quotation.

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