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High Precision Angular Contact Ball Bearings China Suppliers and Factory

High Precision Angular Contact Ball Bearings China Suppliers and Factory

High Precision Angular Contact Ball Bearings China Suppliers and Factory
Looking for high-precision angular contact ball bearings? As leading China suppliers and factory, we provide durable bearings for high-speed spindles and heavy machinery, ensuring superior radial and axial load capacity.



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Angular Contact Ball Bearings are high-precision engineered components designed to simultaneously support radial loads and unidirectional axial loads. By utilizing a specific contact angle between the inner and outer ring raceways, these bearings offer superior rigidity and stability, making them indispensable for high-speed rotation and heavy-duty industrial applications.

Depending on the application requirements, these bearings are available in various contact angles (15°, 25°, 30°, and 40°), where a larger angle increases axial load capacity while a smaller angle optimizes high-speed performance. From standard single-row configurations to advanced four-point contact and duplex arrangements, our range ensures maximum spindle stiffness and operational precision.

Detailed Parameters

Contact Angles15°, 25°, 30°, 40° Load SupportRadial & Unidirectional Axial
Cage MaterialsSteel Plate, Polyamide, Copper Alloy ConfigurationSingle Row, Double Row, Four-Point
Bore Range (d)40mm - 200mm Outer Diameter (D)74.6mm - 420mm
LubricationGrease or Oil Compatible ArrangementSingle or Duplex (Preloaded)
Precision GradeHigh Precision / Industrial Standard ApplicationHigh-Speed Spindles & Heavy Machinery

Key Advantages

Dual Load Capacity

Engineered to withstand both radial and axial loads simultaneously for complex mechanical stresses.

High-Speed Stability

Optimized contact angles reduce friction, enabling smooth operation at high RPMs.

Customizable Rigidity

Duplex arrangements allow for preloading to significantly increase spindle stiffness.

Advanced Cage Options

Available in polyamide for precision or copper alloy for extreme durability.

Bi-directional Support

Four-point contact models (QJ type) effectively restrict axial displacement in both directions.

Precision Fit

Strict dimensional tolerances ensure seamless integration into industrial machinery.

Product Gallery

High Precision Angular Contact Ball Bearings China Suppliers and Factory

Management Platforms

Inventory Control

Real-time tracking of all bearing sizes and types to ensure rapid delivery.

Quality Assurance

Rigorous testing for load capacity and rotational accuracy before shipment.

Technical Support

Expert guidance on selecting the correct contact angle for your application.

Order Monitoring

Transparent procurement process from production to final logistics.

Logistics Optimization

Strategic packaging to prevent contamination and damage during transit.

Lifecycle Management

Consultation on maintenance intervals to extend bearing operational life.

Investment Return Comparison

Performance MetricStandard BearingsAngular Contact Bearings
Axial Load HandlingLimited/NoneSuperior (Unidirectional)
Rotational SpeedModerateVery High
Spindle StiffnessBasicEnhanced (via Preloading)
Service LifeStandardExtended (under mixed loads)
Maintenance CostFrequentReduced (due to precision)

Frequently Asked Questions

Q: How do I choose the correct contact angle for my bearing?

Choose a larger angle (e.g., 40°) if your primary requirement is high axial load capacity. Opt for a smaller angle (e.g., 15°) for applications requiring higher speeds and lower friction.

Q: What is a duplex arrangement in angular contact bearings?

A duplex arrangement involves using two bearings together to handle axial loads in both directions and increase the overall stiffness of the machine spindle.

Q: When should I use a four-point contact ball bearing?

Four-point contact bearings (type QJ) are ideal when you need to support axial loads in both directions while saving space compared to a duplex pair.

Q: Which cage material is best for high-precision bearings?

For high-precision bearings with contact angles below 30°, polyamide formed cages are recommended. For heavy-duty or higher heat applications, copper alloy cutting cages are preferred.

Q: Can these bearings handle radial loads?

Yes, angular contact ball bearings are specifically designed to carry both radial and axial loads simultaneously, though they are most efficient when axial loads are present.

Q: What is the impact of preloading on bearing performance?

Preloading eliminates internal clearance, which increases the rigidity of the shaft and improves the accuracy of the machine tool, though it may slightly increase heat generation.

Looking for High-Precision Bearing Solutions?

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