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Double Row Angular Contact Ball Bearings

Double row angular contact ball bearings are designed to support combined radial and axial loads in both directions within a single bearing unit.
The back-to-back internal arrangement provides higher load capacity, improved axial stiffness, and stable shaft positioning compared to single row designs.
Lumi manufactures high-quality double row angular contact ball bearings with precision-ground raceways and optimized contact angle geometry, ensuring smooth operation, stable running accuracy, and reliable performance under high load conditions.
These bearings are available in various sizes and sealing configurations, including open, shielded, and sealed types.
Double row angular contact ball bearings are widely used in machine tools, gearboxes, pumps, compressors, electric motors, and other industrial equipment where compact design, high rigidity, and simplified bearing arrangements are required.
Lumi also offers OEM / ODM customization services to meet specific application requirements.

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Double Row Angular Contact Ball Bearings

Double Row Angular Contact Ball Bearings: Performance & Advantages

Designed to support combined radial loads and axial loads in both directions, ensuring stable performance under complex operating conditions.

Combined Load Support

The double row back-to-back arrangement increases load capacity and axial stiffness while improving overall load distribution.

Higher Load Capacity and Axial Stiffness

Integrates the function of two single row bearings into one unit, reducing axial space requirements and simplifying installation.

Compact Design with Simplified Installation

Precision-ground raceways and optimized contact angles ensure smooth rotation, accurate shaft guidance, and consistent performance.

Stable Operation & Precise Positioning

Double Row Angular Contact Ball Bearings: Sealing Types & Configurations

Open Type

Open type bearings are manufactured without seals or shields, allowing direct access to the raceways and rolling elements. They are suitable for clean operating environments or applications with external lubrication and high-speed operation performance requirements.

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Shielded Type (ZZ)

Shielded bearings are equipped with metal shields on both sides to provide basic protection against dust and solid contaminants. They maintain low friction and are suitable for applications requiring moderate protection with relatively high rotational speeds.

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Sealed Type (2RS)

Sealed bearings use elastomer contact seals on both sides to prevent the ingress of moisture, dust, and contaminants. They provide enhanced sealing performance and improved lubrication retention, making them suitable for humid or contaminated operating environments.

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Open Type

Open type bearings are manufactured without seals or shields, allowing direct access to the raceways and rolling elements. They are suitable for clean operating environments or applications with external lubrication and high-speed operation performance requirements.

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Shielded Type (ZZ)

Shielded bearings are equipped with metal shields on both sides to provide basic protection against dust and solid contaminants. They maintain low friction and are suitable for applications requiring moderate protection with relatively high rotational speeds.

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Sealed Type (2RS)

Sealed bearings use elastomer contact seals on both sides to prevent the ingress of moisture, dust, and contaminants. They provide enhanced sealing performance and improved lubrication retention, making them suitable for humid or contaminated operating environments.

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Double Row Angular Contact Ball Bearings: Applications in Precision Machinery & Drive Systems

Double row angular contact ball bearings are widely used in precision equipment requiring stable shaft positioning and combined radial and axial load support, such as machine tools, gearboxes, industrial pumps, compressors, electric motors, and automation systems.

Automotive

Drone/UVA

Fitness Equipment

Robotics

Gearboxes

Food Machinery

Agricultural Machinery

Home Appliances

Double Row Angular Contact Ball Bearings: Customization & OEM/ODM

• Contact Angle (α): Custom contact angles are available to optimize axial load capacity, stiffness, and load distribution for specific operating conditions.
• Internal Clearance: Internal clearance can be adjusted to meet requirements for preload, thermal expansion, and operating temperature stability.
• Sealing Configurations: Available in open type, shielded type (ZZ), and sealed type (2RS), with customized sealing materials and designs for special environments.
• Cage Design and Material: Various cage types and materials are available, including steel, brass, and polymer cages, to suit speed, load, and temperature requirements.
• Lubrication Type and Fill Quantity: Customized grease types and lubrication fill volumes are available for high-speed, high-temperature, or long-life applications.

• Dimensional Tolerances: Tightened dimensional tolerances can be specified to meet high-precision assembly and positioning accuracy requirements.
• Material Options: Bearing rings and rolling elements can be supplied in GCr15 (52100), stainless steel, or other special materials upon request.
• Preload Configuration: Preload levels can be customized to achieve the required axial stiffness, running accuracy, and vibration performance.

• Contact Angle (α): Custom contact angles are available to optimize axial load capacity, stiffness, and load distribution for specific operating conditions.
• Internal Clearance: Internal clearance can be adjusted to meet requirements for preload, thermal expansion, and operating temperature stability.
• Sealing Configurations: Available in open type, shielded type (ZZ), and sealed type (2RS), with customized sealing materials and designs for special environments.
• Cage Design and Material: Various cage types and materials are available, including steel, brass, and polymer cages, to suit speed, load, and temperature requirements.
• Lubrication Type and Fill Quantity: Customized grease types and lubrication fill volumes are available for high-speed, high-temperature, or long-life applications.

• Dimensional Tolerances: Tightened dimensional tolerances can be specified to meet high-precision assembly and positioning accuracy requirements.
• Material Options: Bearing rings and rolling elements can be supplied in GCr15 (52100), stainless steel, or other special materials upon request.
• Preload Configuration: Preload levels can be customized to achieve the required axial stiffness, running accuracy, and vibration performance.

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