Single Row Angular Contact Ball Bearings
Precision bearing solutions for high-speed rotation, combined radial load and one-direction axial load.
Haron Bearing manufactures single row angular contact ball bearings for pumps, compressors, electric motors, machine tools, gearboxes, robotics and automation equipment. We support custom contact angle, precision grade, preload, cage, material, sealing, lubrication and OEM packaging for industrial projects.
2000
Founded
400+
Employees
100
Production Lines
30
QC Inspectors
15
R&D Engineers
OEM/ODM
Support
What Is a Single Row Angular Contact Ball Bearing?
A single row angular contact ball bearing is a precision ball bearing designed with an internal contact angle between the balls and the raceways. This angled structure allows the bearing to support radial load and axial load in one direction at the same time.
Radial & Axial Load
Radial load means force pushing from the side of the shaft. Axial load means force pushing along the shaft direction.
Contact Angle
The internal angle where the ball transfers load between rings. A larger contact angle usually provides higher axial load capacity.
Directionality
A single bearing normally supports axial load in one direction only. If force comes from both sides, two bearings are mounted as a pair.
Beginner Note: If your machine mainly needs simple radial support, a deep groove ball bearing may be enough. If your shaft also needs stronger axial positioning, higher rigidity or preload control, a single row angular contact ball bearing is usually a better choice.
Factory Production Process: From Bearing Steel to Precision Rotation
Haron Bearing controls key manufacturing and inspection steps to support stable quality for OEM and industrial bearing projects.
Product Details That Affect Bearing Performance
Understanding these small details helps in selecting the right bearing for high-speed or precision applications.
Raceway Geometry
Designed to create a stable contact angle for combined load transmission.
Ball Quality
Precision steel or ceramic balls selected according to speed, noise, and life requirements.
Cage Design
Steel, brass, polyamide or special materials depending on speed and lubrication.
Shoulder Design
Helps guide the load path and maintain stable rotation under axial force.
Lubrication
Grease or oil selected according to speed, temperature and environment.
Seal & Shield Options
Open, ZZ, 2RS or non-contact options based on contamination and friction needs.
Preload
Light, medium or heavy preload improves rigidity but must be controlled to avoid heat.
Material
GCr15 / AISI 52100 standard. Stainless steel, hybrid or full ceramic for special uses.
Engineered Angular Contact Ball Bearing Solutions
Leveraging advanced kinematics and superior metallurgy, our comprehensive lineup is precision-engineered to resolve complex challenges involving space constraints, extreme load capacities, and ultra-high-speed dynamics.
718 / 719 Series High-Speed
Engineering Profile: Designed specifically for applications demanding minimal cross-sectional area without compromising rigidity. The 718/719 series features an optimized internal geometry that minimizes centrifugal forces, enabling exceptional rotational speeds while maintaining thermal stability.
Ideal Applications: High-frequency CNC machine tool spindles, ultra-precision electric motors, compact robotic articulation joints, and advanced aerospace components.
- Ultra-thin section design for severe space constraints
- Advanced kinematic profile for ultra-low friction and heat generation
- Superior high-speed capability with optimized contact angles
- Available with specialized cage materials for enhanced performance
7000 Series
Engineering Profile: The 7000 series represents our light-duty benchmark, striking a perfect equilibrium between dynamic load rating and spatial efficiency. Engineered with precision raceways, it accommodates combined radial and unidirectional axial loads with exceptional rotational accuracy.
Ideal Applications: High-efficiency electric motors, precision fluid pumps, automated assembly lines, and lightweight industrial gearboxes.
- Compact architectural footprint for streamlined machinery
- Excellent high-speed kinematic characteristics
- Versatile performance across general precision mechanics
- Enhanced fatigue life through proprietary heat treatment
7200 Series
Engineering Profile: As our medium-duty powerhouse, the 7200 series is engineered with a more robust cross-section to handle significantly higher load capacities. The internal macro-geometry is meticulously calibrated to provide superior stiffness and stable shaft guidance under demanding operational stresses.
Ideal Applications: Heavy-duty industrial pumps, industrial-grade compressors, mechanical speed reducers, and main power transmission systems.
- Substantially elevated radial and axial load thresholds
- Exceptional rigidity for vibration-sensitive shaft positioning
- Broad adaptability across heavy manufacturing sectors
- Optimized raceway curvature for uniform stress distribution
7300 Series
Engineering Profile: The 7300 series is our heavy-duty flagship, constructed to endure the most punishing mechanical environments. Featuring the largest ball complement and cross-section in the standard lineup, it delivers maximum load-carrying capability and uncompromising durability under extreme thrust and radial forces.
Ideal Applications: High-pressure fluid handling systems, heavy industrial compressors, massive hoisting equipment, and primary drive transmissions.
- Maximized cross-sectional robustness for extreme duty cycles
- Unrivaled load capacity within standard dimensional series
- Engineered specifically to absorb massive unidirectional axial forces
- Premium steel formulation for unparalleled wear resistance
Matched Pair Sets
Engineering Profile: Precision-engineered matched pairs are the ultimate solution for complex, multi-directional load scenarios. By meticulously preloading and matching bearings at the factory level, we eliminate end-play, exponentially increase system rigidity, and ensure flawless load sharing across the bearing set.
Configuration Options: DB (Back-to-Back for high moment rigidity), DF (Face-to-Face for misalignment tolerance), DT (Tandem for extreme unidirectional thrust).
- Essential for ultra-precise machine tool spindle assemblies
- Critical for zero-backlash ball screw support mechanisms
- Delivers absolute precision in critical shaft support architecture
- Factory-calibrated preload eliminates installation guesswork
High Precision (P5-P2)
Engineering Profile: Representing the pinnacle of our manufacturing capability, these super-precision bearings are crafted to exact P5, P4, or P2 tolerances. Every microscopic parameter—from raceway concentricity to ball sphericity—is rigorously controlled to guarantee near-zero runout, minimal acoustic emission, and absolute kinematic perfection.
Ideal Applications: Ultra-high-speed CNC machining centers, advanced servo mechanisms, high-precision robotics, and next-generation automated machinery.
- Available in stringent ABEC-5 (P5) to ABEC-9 (P2) precision grades
- Micro-level runout control for flawless rotational stability
- Engineered for the most demanding Tier-1 OEM applications
- 100% automated optical and acoustic inspection verified
Common Single Row Angular Contact Ball Bearing Models
Standard models for reference. Custom specifications available upon request.
| Series | Model Examples | Design Character | Contact Angle | Precision | Cage Options | Typical Applications | Action |
|---|---|---|---|---|---|---|---|
| 718 Series | 71800–71840 | Ultra-light / compact | 15° / 25° | P5 / P4 / P2 | Brass / phenolic / PEEK | High-speed spindle, robotics | |
| 719 Series | 71900–71940 | Light high-speed | 15° / 25° | P5 / P4 / P2 | Brass / polyamide | Precision motors, CNC | |
| 7000 Series | 7000–7040 | Light series | 15° / 30° / 40° | P0 / P6 / P5 / P4 | Steel / brass / polyamide | Pumps, motors, automation | |
| 7200 Series | 7200–7240 | Medium series | 30° / 40° | P0 / P6 / P5 | Steel / brass | Compressors, pumps, gearboxes | |
| 7300 Series | 7300–7340 | Heavy series | 30° / 40° | P0 / P6 / P5 | Steel / brass | Heavy-duty pumps, hoists |
The above models are for reference only. Final selection should consider load direction, speed, shaft fit, housing fit, temperature, lubrication, preload and service life requirements. Please send your model, drawing or working conditions for confirmation.
Application Scenarios
Where are single row angular contact ball bearings used?
Pumps
Help support combined radial and axial forces generated by impellers and fluid pressure. Ensure stable shaft positioning.
Compressors
Manage thrust load and maintain smooth rotation under high-speed operation for compressor shafts.
Electric Motors
Improve axial guidance, rigidity and running stability in electric motors and servo motors.
Machine Tool Spindles
Used where high speed, low runout, preload control and rigidity are strictly required.
Gearboxes
Help locate shafts and support combined load in reducers and mechanical transmission systems.
Robotics & Automation
Provide accurate rotation, axial rigidity and stable motion support for compact automation systems.
Industrial Fans
Suitable for rotating equipment where axial airflow force and shaft stability must be controlled.
General Machinery
For machinery that requires durable combined-load support under continuous or intermittent operation.
How to Choose the Right Single Row Angular Contact Ball Bearing
Follow these standard steps or consult our engineers for complex applications.
Confirm Load Direction
- Is the force mainly radial?
- Axial force from one direction?
- Axial force from both directions?
- Is there overturning moment?
Confirm Speed
- What is the RPM?
- Is grease lubrication enough?
- Is oil lubrication required?
- Is temperature rise a concern?
Choose Contact Angle
- Smaller angle for higher speed
- Larger angle for higher axial load
- 15° / 25° for high-speed precision
- 30° / 40° for higher axial load
Choose Bearing Series
- 718/719 for compact high-speed
- 7000 for light, balanced use
- 7200 for medium load
- 7300 for heavier load
Choose Precision Grade
- P0 for general machinery
- P6 for improved accuracy
- P5 for high-speed/lower vibration
- P4/P2 for demanding OEM
Choose Preload
- Light: lower heat, smoother
- Medium: balanced rigidity
- Heavy: high stiffness, more heat
Choose Arrangement
- Single: one direction axial load
- DB: higher moment rigidity
- DF: misalignment tolerance
- DT: higher one-direction axial
Confirm Material & Cage
- GCr15 for standard use
- Stainless for corrosion
- Ceramic for speed/heat
- Brass/steel/polyamide cage
DB vs DF vs DT: How Angular Contact Bearings Are Mounted in Pairs
When axial load comes from both directions or higher rigidity is needed, paired arrangements are used.
DB — Back-to-Back
Two bearings face away from each other. This arrangement provides high rigidity and good moment load resistance.
- Machine tool spindles
- Rigid shaft support
- Applications with overturning moment
DF — Face-to-Face
Two bearings face toward each other. This arrangement can tolerate slight misalignment better than DB.
- General precision shaft support
- Applications where slight mounting misalignment may occur
DT — Tandem
Two bearings face the same direction. This arrangement supports higher axial load in one direction.
- High one-direction thrust load
- Pumps
- Compressors
- Ball screw support
Understand the Difference Before You Choose
Single Row Angular Contact vs Deep Groove Ball Bearings
| Feature | Single Row Angular Contact Ball Bearing | Deep Groove Ball Bearing |
|---|---|---|
| Load type | Radial load + axial load in one direction | Mainly radial load, limited axial load in both directions |
| Contact angle | Designed with contact angle | No special angular contact design |
| Axial rigidity | Higher axial rigidity, especially when preloaded or paired | Lower for demanding axial positioning |
| Installation | Direction matters; often used in pairs | Easier general installation |
| When to choose | Choose when axial load, rigidity and precision are important (Pumps, spindles, servos) | Choose when radial support, simple structure and cost efficiency are more important (Fans, motors) |
Single Row vs Double Row Angular Contact Ball Bearings
Single Row
- Supports axial load in one direction
- Often used in pairs
- More flexible for DB / DF / DT arrangement
- More flexible preload matching
- Suitable for high-speed precision applications
- Good for custom OEM designs
Double Row
- Supports axial load in both directions
- More compact than two separate single row bearings
- Easier installation in some applications
- Less flexible in arrangement and preload than matched sets
- Suitable for compact bearing arrangements
Quality Inspection Before Shipment
Strict factory quality control to ensure precision and reliability for every batch.
1. Dimensional Inspection
Bore diameter, outside diameter, width, chamfer and ring geometry are checked.
2. Runout Inspection
Radial runout and axial runout are checked for stable rotation applications.
3. Noise & Vibration Testing
Noise level, vibration and smoothness of rotation are tested before shipment.
4. Hardness Testing
Ring hardness and heat treatment consistency are checked for wear resistance.
5. Raceway Inspection
Raceway surface quality, grinding marks and defects are inspected.
6. Clearance & Preload
Internal clearance and preload matching are controlled according to requirements.
7. Appearance Inspection
Surface defects, rust, scratches and marking accuracy are checked.
8. Packaging Inspection
Anti-rust protection, label accuracy, and export packing condition are checked.
Packaging Designed for Protection, Identification and Export
Standard Industrial Packaging
Suitable for regular export orders and distributor inventory.
Individual Box Packaging
Each bearing can be packed with model label for easy warehouse management.
Anti-Rust Protection
Anti-rust oil, VCI paper or sealed bags selected for shipping/storage.
Tube or Plastic Packaging
Suitable for small bearings and bulk quantity orders.
Carton & Pallet Export
Suitable for sea freight, air freight and long-distance transportation.
OEM / Private Label
Customer logo, label, barcode and carton marks can be customized.
Why B2B Buyers Choose Haron Bearing
20+ Years Experience
Founded in 2000, long-term experience in manufacturing and export.
100 Production Lines
Stable production capacity supports standard and custom orders.
30 QC Inspectors
Quality control integrated from incoming material to final shipment.
15 R&D Engineers
Engineering support for structure, precision, preload and application.
OEM / ODM Customization
Custom dimension, contact angle, cage, material, seal available.
Precision up to P2
P0, P6, P5, P4 and P2 selected according to requirements.
Export Experience
Supports overseas buyers with tech communication, docs and repeat supply.
Flexible Orders
Sample orders and mass production supported according to project stage.
Certificates, Reports & Documents
- Company profile & catalog
- Technical drawing
- Material report
- Inspection report
- Packaging photos
- Certificate files (if available)
- Export documents
- Custom label confirmation
For industrial buyers, documentation is part of risk control. Haron Bearing can support quality documents according to order requirements, helping customers verify material, dimensions, inspection results and packaging before shipment.
Haron Bearing: Precision Bearing Manufacturer for Industrial Projects
Haron Bearing focuses on manufacturing and exporting precision bearings for industrial equipment and OEM machinery. With more than 20 years of production experience, 400+ employees, 100 advanced production lines, 30 QC inspectors and 15 R&D engineers, we support global buyers with standard bearings, customized bearings, matched bearing sets and OEM packaging.
Key Takeaways About Single Row Angular Contact Ball Bearings
- Designed for combined radial load and axial load in one direction.
- Use an internal contact angle to transmit load between balls and raceways.
- A larger contact angle generally increases axial load capacity.
- A single bearing cannot normally support axial load in both directions by itself.
- DB, DF and DT paired arrangements are used for bidirectional axial load or higher rigidity.
- Common series include 718, 719, 7000, 7200 and 7300.
- Used in pumps, compressors, electric motors, machine tools, gearboxes, robotics.
- Haron Bearing supports custom precision, preload, contact angle, material and OEM packaging.
FAQ About Single Row Angular Contact Ball Bearings
What is a single row angular contact ball bearing?
Can it support axial load in both directions?
Why are angular contact bearings used in pairs?
What does contact angle mean?
What is the difference between 7000, 7200 and 7300 series?
What is the difference between DB, DF and DT arrangement?
What precision grades can Haron Bearing supply?
Can Haron Bearing customize single row angular contact ball bearings?
What applications use single row angular contact ball bearings?
What information should I provide for quotation?
Need a Reliable Single Row Angular Contact Ball Bearing Manufacturer?
Send your bearing model, drawing or working conditions. Haron Bearing will help you confirm the right series, contact angle, precision grade, preload, material and packaging solution for your project.
