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Crossed Rroller Bearings - Aokai

Aokai specializes in manufacturing high-precision Crossed Rroller Bearings for demanding industrial applications. Our products deliver exceptional rigidity, accuracy, and durability in a compact design.

Introduction

What Are Crossed Rroller Bearings?

Crossed Rroller bearings are compact rolling-element bearings that use cylindrical rollers arranged in a crossed pattern between inner and outer rings. This unique design enables them to handle combined radial, axial, and moment loads in a single bearing unit.

This configuration allows the bearing to support loads from multiple directions simultaneously, eliminating the need for multiple bearing arrangements.

Crossed roller arrangement

Each roller is placed at 90° to the adjacent roller, creating a rigid structure that distributes loads evenly.

Thin cross-section

Despite high load capacity, the bearing profile remains compact, saving valuable axial space.

High rotational accuracy

Precision-ground raceways and closely-toleranced rollers enable smooth rotation with minimal runout.

Separable design

Inner and outer rings can be separated for easy mounting and maintenance.

PRODUCTS

Product List of Aokai Crossed Rroller Bearings

Browse our extensive catalog of Crossed Rroller Bearings, available in standard and custom sizes. Each bearing is engineered for high rotational precision and long service life.
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Key Advantages

Key Advantages of Aokai Crossed Rroller Bearings

Aokai crossed rroller bearings are engineered to outperform conventional bearing solutions in precision machinery. Discover the benefits that make them the preferred choice for engineers worldwide.
01

High Rigidity

The crossed roller design dramatically increases contact area, providing exceptional stiffness under heavy loads and reducing deflection.
02

Superior Precision

Manufactured to ISO P4 and P2 accuracy grades, ensuring consistent rotational accuracy and minimal vibration.
03

Compact & Lightweight

Thin cross-section saves up to 40% space compared to conventional ball or roller bearing assemblies.
04

Multi-Directional Load Capacity

Simultaneously handles radial, axial, and moment loads, simplifying system design.
05

Low Friction & Smooth Motion

Optimized roller-raceway contact reduces torque variation, enabling precise positioning.
06

Long Service Life

Made from wear-resistant bearing steel with advanced heat treatment, achieving L10 life of over 10,000 hours in typical applications.
07

Easy Installation

Separable rings allow quick assembly; pre-adjusted clearance eliminates on-site shimming.
08

Customizable Options

Aokai offers made-to-order dimensions, special cage materials (brass, PEEK), and lubrication variants for unique operating conditions.
Manufacturing Process

Crossed Roller Bearing Manufacturing Process

Our standardized production process delivers crossed roller bearings that meet the demanding requirements of robotics, machine tools, automation, medical equipment, and precision positioning systems.

High-quality raw materials are the foundation of reliable bearings. We source certified bearing-grade steel with excellent purity and mechanical properties, ensuring superior wear resistance, fatigue strength, and long-term dimensional stability.

Precision forging creates a stronger bearing ring by optimizing the internal grain structure. This process improves mechanical strength, reduces internal defects, and provides a solid foundation for high-performance crossed roller bearings.

Advanced CNC machining ensures every bearing ring achieves outstanding dimensional accuracy and concentricity. Strict machining control prepares each component for high-precision grinding and assembly.

Our vacuum heat treatment process enhances hardness, toughness, and fatigue resistance while minimizing deformation. Carefully controlled temperature profiles help every bearing maintain stable performance under demanding operating conditions.

High-precision grinding technology produces smooth raceway surfaces and micron-level tolerances. Accurate raceway geometry minimizes friction, improves running accuracy, and extends bearing service life.

Each cylindrical roller is precision ground and inspected for size consistency and roundness. Uniform rollers ensure smooth motion, balanced load distribution, and stable rotational performance throughout the bearing's service life.

Precision cages and spacers maintain accurate roller positioning while reducing friction and operating noise. Different material options are available to satisfy various speed, load, and environmental requirements.

Experienced technicians assemble every crossed roller bearing in a controlled environment. Precise roller arrangement, preload adjustment, and lubrication ensure smooth operation and consistent product quality.

Every bearing undergoes multiple quality inspections before shipment, including dimensional measurement, runout testing, hardness verification, torque testing, and appearance inspection to ensure reliable performance and manufacturing consistency.

Finished bearings receive professional anti-corrosion treatment and secure export packaging to protect against moisture, contamination, and transportation damage during international shipping.

Applications

Applications Across Industries

Aokai crossed rroller bearings are integral components in precision machinery requiring high rigidity, compactness, and reliable performance. Below are the primary industries and typical applications.
01

Industrial Robotics

Used in robot wrist joints, arm rotating axes, and end-effector rotary tables for high-precision assembly and welding.

02

Machine Tools

Applied in CNC rotary tables, indexing heads, and spindle units to achieve smooth, backlash-free rotation.

03

Medical Equipment

Essential in CT scanners, MRI gantries, and surgical robotics for silent, vibration-free motion.

04

Aerospace & Defense

Found in satellite positioning turrets, radar antenna drives, and flight simulator motion bases.

05

Optical & Photonics

Used in automatic inspection systems, telescope mounts, and laser cutting heads for sub-arc-minute accuracy.

06

Semiconductor Manufacturing

Applied in wafer handling stages and lithography equipment where cleanliness and precision are critical.

07

General Automation

Integrated into indexing tables, packaging machines, and assembly line rotary stations for reliable indexing.

Quality Assurance

ISO 9001:2015 certified production facility with strict quality control at every stage – from raw material incoming inspection to final assembly and testing. 100% dimensional inspection using CMM and laser micrometers; all bearings are runout-tested before shipment. Material certification and hardness reports available upon request.

Customization & Engineering Support

We work closely with clients to develop custom bearing solutions for unique applications – including special dimensions, cage materials (brass, steel, PEEK), seals, and lubricants. Our engineering team provides free technical consultation on bearing selection, mounting, and troubleshooting.

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WHY CHOOSE US?

Aokai is a trusted manufacturer of Crossed Rroller bearings with years of expertise in precision engineering. We are committed to delivering products that meet the highest standards of quality, reliability, and customer satisfaction.

Global Delivery & Service

Fast lead times: standard models ship within 5-7 working days; custom orders typically 3-4 weeks. Worldwide shipping via DHL, FedEx, or sea freight, with tracking and insurance included. After-sales support: 12-month warranty against manufacturing defects, with replacement or refund guaranteed.

Why Customers Trust Aokai

Over 10 years of bearing manufacturing experience serving clients in 30+ countries. Competitive pricing without compromising quality – direct factory pricing eliminates middlemen. Dedicated account manager for each order, ensuring clear communication from inquiry to delivery.

FAQ

Crossed Roller Bearings FAQs

What is a crossed roller bearing?

A crossed roller bearing is a precision bearing in which cylindrical rollers are arranged alternately at 90° between the inner and outer rings. This design enables the bearing to support radial, axial, and moment loads simultaneously while providing high rigidity and rotational accuracy.

What industries commonly use crossed roller bearings?

These bearings are widely used in industrial robots, CNC machine tools, rotary tables, medical equipment, semiconductor manufacturing systems, optical inspection devices, aerospace equipment, and automation machinery.

What materials are used to manufacture crossed roller bearings?

Most crossed roller bearings are manufactured from high-quality bearing steel such as GCr15, SUJ2, or 100Cr6. Stainless steel versions are also available for corrosive or cleanroom environments.

Can crossed roller bearings support combined loads?

Yes. One of the main advantages of crossed roller bearings is their ability to support radial loads, axial loads in both directions, and overturning moments simultaneously, making them suitable for precision positioning equipment.

What are the advantages of crossed roller bearings?

Crossed roller bearings offer high load capacity, excellent rigidity, compact design, low rotational friction, and superior positioning accuracy. They are ideal for applications that require precise motion control and space-saving designs.

How do I choose the right crossed roller bearing?

Selection depends on several factors, including load capacity, rotational speed, mounting space, operating environment, accuracy requirements, and preload. Our engineering team can recommend the most suitable model based on your application.

What precision grades are available?

We offer multiple precision grades to meet different application requirements, including standard, high-precision, and ultra-precision options. Customized accuracy levels are also available upon request.

Do you provide customized crossed roller bearings?

es. We offer OEM and custom manufacturing services, including special dimensions, customized preload, internal clearance, materials, coatings, lubrication options, and private-label packaging.
CONTACT US
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Custom dimensions and special materials can be supplied upon request. Contact our sales team for a complete datasheet and quotation.

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