Double Row Angular Contact Ball Bearings Manufacturer
Factory-direct bearing solutions for combined radial loads, bidirectional axial loads and compact high-rigidity machinery.
Haron Bearing manufactures double row angular contact ball bearings for electric motors, pumps, compressors, gearboxes, fans, blowers, agricultural machinery and industrial equipment. Our factory supports 5200 series, 5300 series, 32 series, 33 series, open type, ZZ shielded type, 2RS sealed type, drawing review, model confirmation, OEM customization and export-ready packaging for industrial projects.
What Is a Double Row Angular Contact Ball Bearing?
A double row angular contact ball bearing is a ball bearing with two rows of balls and angular contact raceways. Its internal design is similar to two single row angular contact ball bearings arranged back-to-back, but integrated into one compact bearing unit with one inner ring and one outer ring structure.
Understanding Loads & Arrangement:
- • Radial load means force acting from the side of the shaft.
- • Axial load means force pushing along the shaft direction.
- • Bidirectional axial load means the bearing can support axial force from both directions.
- • Back-to-back arrangement means the internal load lines spread outward, helping the bearing support combined loads and tilting moment in a compact space.
This makes double row angular contact ball bearings suitable for motors, pumps, compressors, gearboxes, fans and industrial machinery where shaft positioning, rigidity and compact mounting are important.
Factory Production Process: From Bearing Steel to High-Rigidity Combined Load Support
Haron Bearing controls key manufacturing and inspection steps to support stable quality for 5200 series, 5300 series, 32 series, 33 series and custom double row angular contact bearing projects.
1. Raw Material Inspection
Bearing steel, stainless steel or ceramic materials are checked before production. Material traceability helps support stable batch quality.
2. Ring Turning
Inner and outer ring blanks are machined to prepare accurate geometry for grinding and assembly.
3. Heat Treatment
Controlled heat treatment improves hardness, wear resistance and dimensional stability.
4. Raceway Grinding
Precision grinding controls the angular contact raceway geometry that affects load direction, noise, vibration and running accuracy.
5. Superfinishing
Raceway surface finish is improved to reduce friction and support smoother rotation under combined load conditions.
6. Cleaning and Assembly
Components are cleaned before assembly. Balls, cages, inner rings and outer rings are assembled according to the double row structure.
7. Grease Filling & Seals
Open, ZZ shielded and 2RS sealed designs are completed according to application requirements.
8. Final Inspection & Packaging
Dimensions, noise, vibration, clearance, appearance, label and export packaging are checked before shipment.
Quick Engineering Overview for Double Row Angular Contact Ball Bearings
Integrated Back-to-Back Structure
The internal structure is similar to two single row angular contact bearings arranged back-to-back, but integrated into one compact bearing unit.
Two Rows of Balls
Two rows of balls help distribute combined radial and axial loads while improving rigidity and shaft positioning.
Bidirectional Axial Load
The bearing can support axial loads from both directions, making it suitable for fixed-end bearing arrangements and reversing axial forces.
Radial Load Support
Double row angular contact ball bearings support radial loads together with axial loads, making them useful in motors, pumps and gearboxes.
Moment Load Resistance
The wider double row structure helps resist tilting moment and improves rigidity in compact rotating assemblies.
Compact Mounting Width
One integrated bearing can simplify mounting and save axial space compared with using two separate single row bearings.
Open / ZZ / 2RS Options
Open, metal shielded and rubber sealed designs can be selected according to speed, lubrication and contamination conditions.
Application Fit
Suitable for electric motors, pumps, compressors, gearboxes, fans, blowers, agricultural machinery and general industrial equipment.
Product Details That Affect Double Row Angular Contact Bearing Performance
1. Raceway Geometry
Angular contact raceway geometry determines load direction, axial load capacity, running stability and bearing rigidity.
2. Contact Angle
The contact angle affects axial load capacity and rigidity. A suitable contact angle should be selected according to application requirements.
3. Ball Quality
Precision steel balls or ceramic balls can be selected according to speed, noise, temperature and service life requirements.
4. Cage Design
Steel, brass, polyamide or special cage materials can be selected depending on speed, temperature, lubrication and working environment.
5. Internal Clearance
Internal clearance affects heat generation, stiffness, shaft positioning and running accuracy. It should be selected carefully for OEM applications.
6. Sealing Design
Open, ZZ shielded and 2RS sealed types should be selected according to contamination, grease retention and friction requirements.
7. Lubrication
Grease or oil lubrication should be selected according to speed, temperature, load and operating environment.
8. Material Options
GCr15 / AISI 52100 bearing steel is used for standard industrial applications. Stainless steel, hybrid ceramic or full ceramic options are available for special projects.
Double Row Angular Contact Ball Bearings We Supply
5200 Series / 32 Series
Light and compact series for moderate combined loads and relatively higher speed applications.
Suitable for: Electric motors, fans, blowers, compact machinery, light gearboxes and general rotating equipment.
- Compact double row structure
- Suitable for moderate radial and axial combined loads
- Relatively higher speed capability
- Open, ZZ and 2RS designs available
- Suitable for compact equipment and fixed-end bearing arrangements
- OEM packaging and model interchange support available
5300 Series / 33 Series
Medium and heavy series for stronger radial load, bidirectional axial load and higher rigidity.
Suitable for: Pumps, compressors, industrial gearboxes, agricultural machinery, power transmission systems and heavier industrial assemblies.
- Wider and stronger structure
- Higher combined load capacity than 5200 series
- Better rigidity for shaft positioning
- Suitable for heavier radial and axial loads
- Open, ZZ and 2RS designs available
- Drawing review and custom requirement support
Open Type
For applications requiring lower friction, higher speed and external lubrication.
Suitable for: Gearboxes, clean machinery, protected mechanical assemblies, high-speed rotating parts and systems with controlled lubrication.
- Lower friction than sealed types
- Suitable for higher speed applications
- Requires proper lubrication
- Best used in clean or protected environments
- Easy inspection and relubrication in some assemblies
- Suitable for OEM equipment with controlled operating conditions
ZZ Shielded Type
For general industrial applications requiring grease retention and basic particle protection while maintaining relatively low friction.
Suitable for: Electric motors, fans, blowers, general machinery, automation equipment and distributor replacement markets.
- Metal shields on both sides
- Better grease retention than open type
- Lower friction than contact rubber seals
- Suitable for general industrial environments
- Commonly used in electric motors and fans
- Balanced solution for speed and basic protection
2RS Sealed Type
For applications requiring better dust, moisture and contamination protection.
Suitable for: Agricultural machinery, pumps, compressors, outdoor equipment, maintenance replacement markets and equipment exposed to dust or moisture.
- Rubber contact seals on both sides
- Better dust protection
- Better moisture resistance
- Improved grease retention
- Suitable for harsher working environments
- Reduces maintenance frequency in suitable applications
Custom OEM Bearings
For OEM machinery and non-standard rotating assemblies that cannot use standard 5200 / 5300 / 32 / 33 dimensions.
Suitable for: Special gearboxes, compact pumps, custom motors, agricultural machinery, automation equipment, replacement projects and industrial machinery upgrades.
- Custom dimensions, clearance, precision grade
- Custom cage, material, grease, seal or shield type
- Drawing review support
- OEM private label packaging
- Batch supply support
Common Double Row Angular Contact Ball Bearing Models
| Series | Model Examples | Design Character | Load Direction | Design Options | Typical Applications | Action |
|---|---|---|---|---|---|---|
| 5200 Series | 5200, 5201, 5202, 5203, 5204, 5205, 5206, 5207, 5208 | Light / compact double row design | Radial load + axial load in both directions | Open / ZZ / 2RS | motors, fans, blowers, compact machinery | |
| 5300 Series | 5300, 5301, 5302, 5303, 5304, 5305, 5306, 5307, 5308 | Medium / stronger double row design | Higher combined radial and bidirectional axial loads | Open / ZZ / 2RS | pumps, compressors, gearboxes, agricultural machinery | |
| 32 Series | 3200, 3201, 3202, 3203, 3204, 3205, 3206 | Compact equivalent series | Radial load + bidirectional axial load | Open / ZZ / 2RS | motors, fans, light industrial equipment | |
| 33 Series | 3300, 3301, 3302, 3303, 3304, 3305, 3306 | Higher load equivalent series | Stronger combined load support | Open / ZZ / 2RS | pumps, gearboxes, compressors, heavier equipment | |
| Custom Series | According to drawing or sample | Non-standard bearing design | According to working conditions | Custom clearance, cage, grease, material, seal, packaging | OEM machinery and replacement projects |
Application Scenarios for Double Row Angular Contact Ball Bearings
Electric Motors
Double row angular contact ball bearings are used in compact motor assemblies requiring stable rotation, axial positioning and low vibration.
Pumps
In pump systems, double row angular contact bearings help support combined radial and axial loads caused by shaft rotation, impeller force and fluid pressure.
Compressors
Double row angular contact ball bearings support compact shaft arrangements where axial load and rigidity are important for stable compressor operation.
Fans and Blowers
These bearings help support high-speed rotating shafts with stable positioning, controlled noise and compact mounting.
Gearboxes
Double row angular contact bearings are used when gear shaft support requires rigidity and bidirectional axial load capacity.
Agricultural Machinery
Sealed double row angular contact bearings can support dusty and outdoor working environments where grease retention and contamination protection are important.
Automation Equipment
Suitable for compact mechanical modules requiring stable rotation, simplified mounting and reliable bearing supply.
Industrial Machinery
Suitable for machinery that requires combined load support, bidirectional axial positioning and compact bearing arrangement.
How to Choose the Right Double Row Angular Contact Ball Bearing
Confirm the load direction
Is the bearing supporting radial load, axial load or combined load? Does axial force come from one direction or both directions? Is there any tilting moment?
Guide: Choose double row angular contact ball bearings when the application requires combined radial and axial load support in both directions.
Confirm the load level
Is the load light, medium or heavy? Is the bearing used in a motor, pump, gearbox or compressor? Is higher rigidity required?
Guide: 5200 / 32 series are suitable for lighter to medium loads. 5300 / 33 series are suitable for higher combined load requirements.
Confirm the speed requirement
Is the application high-speed or moderate-speed? Is lower friction more important? Is heat generation a concern?
Guide: Open type may be suitable for clean, higher-speed and externally lubricated systems. ZZ or 2RS types should be selected when grease retention and protection are more important.
Choose sealing design
- Open type for lower friction and clean environments
- ZZ type for metal shield protection and grease retention
- 2RS type for better dust, moisture and contamination protection
Choose bearing series
- 5200 / 32 Series for compact size and moderate loads
- 5300 / 33 Series for higher rigidity and stronger combined loads
- Custom series for special dimensions, drawings or OEM projects
Confirm internal clearance
Internal clearance affects heat, stiffness, noise, vibration and running accuracy. Clearance should be confirmed according to load, speed, fit and operating temperature.
Confirm cage material and grease
Steel cage for standard industrial use, brass for demanding applications, polyamide for lower friction. Grease should match speed, temperature, load and working environment.
Step 8: Send model, drawing or sample
If you are not sure about the correct bearing, send your old model, bearing photo, drawing or working conditions. Haron Bearing can help with model confirmation and selection advice.
Understand the Difference Before You Choose
Double Row Angular Contact vs Single Row Angular Contact
Double Row Angular Contact Ball Bearing
- Supports radial load and axial loads in both directions
- Integrated back-to-back structure
- One compact bearing unit
- Higher rigidity than many compact single-row arrangements
- Saves space compared with two separate single row bearings
- Motors, pumps, compressors, gearboxes and industrial machinery
- Choose when compact combined load support and easier mounting are important
Single Row Angular Contact Ball Bearing
- Supports radial load and axial load mainly in one direction
- Often mounted in DB / DF / DT pairs for bidirectional axial load
- More flexible preload arrangement
- Suitable for high-speed precision paired bearing systems
- Requires paired arrangement for two-direction axial support
- Machine tools, spindles, precision equipment and paired bearing arrangements
- Choose when arrangement flexibility and precision pairing are more important
Double Row vs Matched Pair
Double Row Angular Contact:
Integrated bearing unit, saves axial space, easier to mount, suitable for compact OEM machinery, good for standard fixed-end arrangements, less flexible than a custom matched pair.
Matched Pair Angular Contact:
Two separate bearings matched together, more preload and arrangement flexibility, can be arranged DB, DF or DT, suitable for high precision spindles, requires more careful mounting, usually takes more axial space.
Double Row vs Deep Groove Ball Bearing
Double Row Angular Contact:
Designed for combined radial and axial loads, supports axial load in both directions, higher rigidity in compact assemblies, better for shaft positioning than general deep groove bearings, suitable for pumps, motors, gearboxes.
Deep Groove Ball Bearing:
Mainly used for radial load and moderate axial load, more general-purpose and cost-effective, easier installation, suitable for motors, fans, conveyors and general machinery, less suitable when strong bidirectional axial support is required.
5200 Series vs 5300 Series
5200 / 32 Series:
Light and compact series, suitable for moderate combined loads, relatively higher speed, good for motors, fans, blowers and compact equipment.
5300 / 33 Series:
Wider and stronger series, suitable for higher combined loads, better rigidity, good for pumps, compressors, gearboxes and heavier machinery.
Not sure which bearing to choose? Contact Haron Bearing.
Quality Inspection Before Shipment
1. Dimensional Inspection
Bore diameter, outside diameter, width, chamfer and ring geometry are checked according to specification.
2. Raceway Geometry
Angular contact raceway geometry is checked because it directly affects contact angle, load capacity and running stability.
3. Internal Clearance
Internal clearance is controlled according to application requirements to support stiffness, heat control and shaft positioning.
4. Runout Inspection
Radial runout and axial runout are checked for applications requiring stable rotation and higher accuracy.
5. Noise and Vibration Testing
Noise level, vibration and smoothness of rotation are tested before shipment.
6. Hardness Testing
Ring hardness and heat treatment consistency are checked to support wear resistance and service life.
7. Seal and Shield Inspection
ZZ shields and 2RS seals are checked for appearance, fit and grease retention requirements.
8. Packaging Inspection
Anti-rust protection, label accuracy, carton strength and export packing condition are checked before shipment.
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 can be selected according to shipping and storage requirements.
Sealed Bearing Protection
ZZ and 2RS bearings should be protected from dust, moisture and impact during storage and shipping.
Carton and Pallet Export Packaging
Suitable for sea freight, air freight and long-distance transportation.
OEM / Private Label Packaging
Customer logo, label, barcode and carton marks can be customized if required.
Why B2B Buyers Choose Haron Bearing
20+ Years Experience
Founded in 2000, Haron Bearing has long-term experience in bearing manufacturing and export.
100 Production Lines
Stable production capacity supports both standard and customized bearing orders.
30 QC Inspectors
Quality control is integrated from incoming material to final shipment.
15 R&D Engineers
Engineering support helps confirm structure, clearance, precision, material and application suitability.
OEM Customization
Custom dimension, clearance, cage, material, seal, grease, marking and packaging are available.
Precision up to P2
P0, P6, P5, P4 and P2 can be selected according to application requirements.
Export Experience
Haron Bearing supports overseas buyers with technical communication, packaging, documentation and repeat order supply.
Flexible Order Support
Sample orders and mass production orders can be supported according to project stage.
Haron Bearing: Double Row Angular Contact Ball Bearings 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, double row angular contact ball bearings, single row angular contact bearings, thin section bearings, matched bearing sets and OEM packaging.
Key Takeaways About Double Row Angular Contact Ball Bearings
- Double row angular contact ball bearings are designed for combined radial loads and axial loads in both directions.
- Their internal structure is similar to two single row angular contact bearings arranged back-to-back in one compact bearing unit.
- They are often used when compact installation, higher rigidity and stable shaft positioning are required.
- 5200 / 32 series are commonly selected for lighter to medium loads and relatively higher speed applications.
- 5300 / 33 series are selected for higher combined load capacity and stronger rigidity.
- Open type is suitable for clean, higher-speed and externally lubricated applications.
- ZZ shielded type provides grease retention and basic particle protection.
- 2RS sealed type provides better dust, moisture and contamination protection.
- Common applications include electric motors, pumps, compressors, gearboxes, fans, blowers, agricultural machinery and industrial equipment.
- Important selection factors include radial load, axial load direction, moment load, speed, internal clearance, seal type, cage material, lubrication and mounting method.
- Haron Bearing supports standard series, custom double row angular contact bearings, OEM packaging, drawing review and model confirmation.
