BOBI Bearing | Precision Thin Section & Crossed Roller Bearings Manufacturer

Trusted Manufacturer of High-Precision Bearings

Luoyang BOBI Precision Bearing Co., Ltd. specializes in the design and production of thin section ball bearings, crossed roller bearings, harmonic reducer bearings, flexible bearings, and slewing ring bearings. With advanced manufacturing capabilities and strict quality control, we deliver reliable, high-performance bearing solutions to global industries.

Our product range includes inch and metric-sized thin section bearings with open and sealed types in radial contact (C-type), four-point contact (X-type), and angular contact (A-type) configurations. We also offer custom-engineered bearings tailored to specific application requirements.

1"–40"

Inner Diameter Range

8–20mm

Metric Cross-Sections

Our Product Range

High-precision bearings engineered for durability, compact design, and optimal load performance across industrial applications.

Thin Section C-Type Open Bearings

Radial contact ball bearings with lightweight, compact design. Ideal for applications requiring radial load optimization and space-saving solutions.

• Series: NKAA10CP0 to NKG250CP0
• Open radial contact (C-type)
• Inch and metric sizes available

X-Type 4-Point Contact Bearings

Single-row ball bearings capable of handling radial, axial, and moment loads simultaneously. High rigidity and precision for demanding environments.

• Four-point contact structure
• Inch and metric sealed variants
• Load capacity: dual axial & radial

A-Type Angular Contact Bearings

Open thin section angular contact ball bearings widely used in industrial automation, robotics, and precision equipment.

• High-speed rotation capability
• Optimized for axial load support
• Compact cross-section design

Sealed C-Type Bearings

Inch-sized sealed thin section bearings with low torque and excellent contamination protection. Ideal for harsh operating conditions.

• Dual-side sealing rings
• Lightweight and compact
• Reduced maintenance needs

RA Series Crossed Roller Bearings

Ultra-thin design with split outer ring. High rigidity and precision for applications requiring minimal space and maximum load capacity.

• Very thin bearing ring
• Split outer ring design
• High rotational accuracy

RB Series Crossed Roller Bearings

Basic type of crossed cylindrical roller bearings with integrated inner ring. Offers high load capacity and stiffness.

• Integrated inner ring
• High moment load resistance
• Precision-machined raceways

CRBF-C Series Bearings

Split outer ring design for solid shaft reducers. Adjustable clearance and high-precision rotation under preload.

• V-shaped 90° raceway
• Separable inner/outer rings
• High rigidity & load capacity

Slewing Ring Bearings

Heavy-duty crossed roller slewing bearings with internal or external gearing. Designed for wind turbines, cranes, and construction machinery.

• Handles axial, radial & moment loads
• Gearless or geared variants
• Compact and lightweight

View All Products

Why Choose BOBI Bearings?

Engineered for performance, reliability, and precision across the most demanding industrial applications.

High Precision

Tight tolerances and advanced manufacturing ensure consistent rotational accuracy and long service life.

Compact Design

Thin section and lightweight construction ideal for space-constrained applications in robotics and automation.

Durable & Reliable

Built to withstand harsh environments, heavy loads, and continuous operation in industrial settings.

Custom Solutions

We design and manufacture customer-specific bearings to meet unique application requirements.

Frequently Asked Questions

What types of thin section bearings do you offer?

We offer inch and metric-sized thin section bearings in open and sealed types. Open types include KAA, KA, KB, KC, KD, KF, and KG series. Sealed types include JHA, JA, JB, JU, and JG series. Configurations include radial contact (C-type), four-point contact (X-type), and angular contact (A-type).

What is the size range of your bearings?

Our thin section bearings have inner diameters ranging from 1 inch to 40 inches. Metric bearings are available in 8x8mm, 13x13mm, and 20x20mm cross-sections. We also produce 618 and 619 series deep groove bearings.

Can you manufacture custom bearings?

Yes, we specialize in customer-designed bearings. Our engineering team works closely with clients to develop precision bearings tailored to specific load, space, and environmental requirements.

What industries use BOBI bearings?

Our bearings are used in robotics, industrial automation, medical equipment, renewable energy (wind turbines), construction machinery, port cranes, and aerospace applications.

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