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Cylindrical Roller Bearing Without Outer Ring Wholesale

Home / Products / Roller Bearings / Cylindrical Roller Bearing / Cylindrical Roller Bearing Without Outer Ring
  • Cylindrical Roller Bearing Without Outer Ring
  • Cylindrical Roller Bearing Without Outer Ring
  • Cylindrical Roller Bearing Without Outer Ring

Cylindrical Roller Bearing Without Outer Ring

A cylindrical roller bearing without an outer ring is a specific type of bearing that consists only of the inner ring, cylindrical rollers, and the cage (which holds the rollers in place).  The absence of the outer ring allows this bearing to be used in applications where the housing or surrounding structure itself functions as the outer raceway.  Here's more detail on its design and use:

Features and Characteristics:
No Outer Ring: In this configuration, the surrounding housing acts as the outer raceway.  The cylindrical rollers directly contact the machined surface of the housing, which must be designed with precise tolerances and surface finish to ensure smooth operation.

Compact Design: Without the outer ring, the bearing assembly becomes more compact, which can be advantageous in applications with space constraints.

High Load Capacity: Cylindrical roller bearings are known for their ability to support high radial loads because the rollers have a larger contact area than ball bearings.  Even without the outer ring, these bearings can handle significant loads, assuming the housing is robust and machined to the required specifications.

Customization: Bearings without an outer ring are often used in custom machinery designs where the housing can be machined to perform the function of the outer raceway.  This reduces the number of parts and simplifies the design.

Ease of Maintenance: Since there is no outer ring, it is easier to inspect, lubricate, and replace the rollers or inner ring if necessary.  However, the housing must be maintained carefully to prevent wear or damage to the raceway surface.

  • Cylindrical Roller Bearing Without Outer Ring
  • Cylindrical Roller Bearing Without Outer Ring
  • Cylindrical Roller Bearing Without Outer Ring
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About FTM
Shaoxing Shangyu Flight Seiko Machinery Co., Ltd. Shaoxing Shangyu Flight Seiko Machinery Co., Ltd.
"Spin into eternity, inherit excellence, and create the future together."

Shaoxing Shangyu Flight Seiko Machinery Co., Ltd. (FTM), founded in 2006, is China Cylindrical Roller Bearing Without Outer Ring Suppliers and Wholesale Cylindrical Roller Bearing Without Outer Ring Factory.And it an enterprise focusing on the R&D, manufacturing, and customization of non-standard bearings, high-precision bearings (import substitution), and bearing accessories and mechanical parts. With more than 30 years of technical design experience, FTM has earned an excellent reputation in the field of high-quality bearings. Our professional technical team provides domestic and foreign customers with high-quality bearing solutions in engineering machinery, textile machinery, and other fields.

Relying on years of professional manufacturing and technical skills, FTM actively introduces advanced CNC machine tools from Japan to ensure product processing accuracy and stability. In addition, FTM's bearing product research is guided by a doctor of tribology. We adhere to the corporate philosophy of innovation and development, and our products are exported to many countries and regions around the world. We have long been supporting and producing various types of bearings for many world-renowned companies, maintaining good production relationships. Spin into eternity, inherit excellence, and create the future together. Choose FTM, and we will be your best choice for bearing solutions.

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Shaoxing Shangyu Flight Seiko Machinery Co Ltd FTM leverages over 30 years of technical design expertise to offer high precision Cylindrical Roller Bearings without an outer ring. This specialized bearing configuration, consisting only of the inner ring, high grade cylindrical rollers, and a precision engineered cage, is designed for integrated mechanical systems where space efficiency and load density are paramount.

By eliminating the outer ring, the surrounding housing of your equipment functions directly as the outer raceway. This design philosophy significantly reduces the radial cross section, allowing for a more compact and lightweight machine profile. Our FTM technical team ensures that every component is manufactured to rigorous tolerances, ensuring that when paired with a properly machined housing, the assembly achieves maximum rotational accuracy and high radial load capacity.

Why Choose FTM Solutions

As a manufacturer focused on import substitution and non standard customization, FTM provides a distinct advantage in material quality and engineering support. Our bearings are particularly well suited for demanding applications in textile machinery, engineering equipment, and precision gearboxes. We do not just provide a part; we provide a comprehensive bearing solution, ensuring that your housing specifications align perfectly with our bearing tolerances for optimal performance and extended service life.

Key Features and Technical Advantages

  • Integrated Space Optimization The absence of the outer ring minimizes the bearing footprint, making it the ideal choice for applications with severe radial space constraints.
  • Superior Radial Load Distribution Unlike ball bearings, the line contact of our cylindrical rollers provides a much larger surface area, allowing the bearing to withstand heavy radial forces and shock loads.
  • Simplified Design and Assembly Reducing the number of components simplifies your inventory and streamlines the assembly process, while also easing the path for direct lubrication and maintenance.
  • Customized Precision FTM specializes in non standard dimensions and specialized cage materials (such as brass, steel, or high performance polymers) to meet specific thermal and speed requirements.

Frequently Asked Questions FAQ

1. What are the surface requirements for the housing used as the outer raceway
Since the rollers contact the housing directly, the internal bore of the housing must be hardened to a level similar to a standard bearing ring (typically HRC 58 to 62) and ground to a precise surface finish (Ra 0.4 or better) to ensure durability and minimize friction.

2. In what specific industries are these bearings most commonly used
These bearings are widely utilized in the textile industry for spinning frames and looms, in automotive transmissions, and in heavy engineering machinery where compact design and high load capacity are critical.

3. Can FTM customize the cage material for high speed applications
Yes. Depending on your operational environment and rotational speeds, we can provide cages made of machined brass for high stability, pressed steel for cost effectiveness, or specialized synthetic materials for reduced weight and noise.

4. How do I ensure proper lubrication for a bearing without an outer ring
Lubrication is often simpler with this design as grease or oil can be applied directly to the roller set. However, the housing design should include proper sealing and lubrication channels to ensure consistent coverage across the raceway surface.

5. Can this bearing handle axial loads
Generally, cylindrical roller bearings are designed to handle radial loads. While some designs with ribs on the inner ring can manage minor axial displacement, they are not intended for significant thrust loads. Our technical team can assist in modifying the design if specific axial constraints are required.

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