Double Row Deep Groove Ball Bearings Manufacturer
High-load double row deep groove ball bearings for compact gearboxes, agricultural machinery, power transmission systems, pumps, motors and industrial equipment.
Double row deep groove ball bearings use two rows of balls and two deep raceway grooves to provide higher radial load capacity than standard single row deep groove ball bearings. They are suitable for compact bearing arrangements where load capacity, stable rotation and space-saving design are important.
Find the Right Double Row Bearing Faster
Factory Production Capability for Double Row Deep Groove Ball Bearings
From bearing steel inspection to ring machining, heat treatment, raceway grinding, assembly, sealing, lubrication and final inspection.
Need stable supply for 4200 / 4300 series?
Steel Incoming
Inspection
Turning & Ring
Machining
Heat
Treatment
Raceway
Grinding
Raceway
Superfinishing
Ball & Cage
Assembly
Greasing /
Sealing
Noise & Vibration
Inspection
What Is a Double Row Deep Groove Ball Bearing?
A double row deep groove ball bearing is a radial ball bearing with two rows of balls arranged inside two deep raceway grooves. Compared with a single row deep groove ball bearing of similar bore and outside diameter, the double row design provides higher load carrying capacity while keeping the bearing arrangement compact.
Two rows of balls
Utilizes two parallel rows of steel balls within specialized inner and outer ring raceways.
Higher radial load capacity
Significantly increases the ability to support heavy radial loads without increasing the outer diameter.
Compact alternative
Serves as a space-saving alternative to using two separate single row bearings side-by-side.
Structure & Load Direction Explained
Understanding load capabilities to ensure proper application and avoid confusion with angular contact bearings.
Primary radial load, limited axial load
Double row deep groove ball bearings are mainly selected for higher radial load capacity. They can also support limited axial loads in both directions, but they are not the same as double row angular contact ball bearings.
Suitable For
- • Higher radial load
- • Compact installation
- • Moderate axial load
- • Stable rotating shaft support
Not Suitable For
- • Severe misalignment
- • Very high axial load
- • Strong moment load
- • Controlled contact angle needs
Product Details That Affect Bearing Performance
Precision manufacturing and structural details ensure reliability in industrial applications.
Deep Raceway Grooves
Precision-machined deep raceway grooves help guide the balls smoothly and support radial load more effectively.
Two Rows of Steel Balls
The two-row ball arrangement increases load carrying capacity compared with a standard single row deep groove ball bearing.
Cage Structure
Steel cage, polyamide cage or brass cage options can be selected according to speed, temperature and application requirements.
Open Design
Open bearings are suitable for applications with external lubrication, easier inspection or lower friction requirements.
ZZ / 2Z Shielded Design
Metal shields help protect the bearing from larger particles while maintaining lower friction than contact seals.
2RS / 2RSR Sealed Design
Rubber seals provide better protection against dust, moisture and contamination in maintenance-sensitive environments.
Double Row Deep Groove Ball Bearing Types We Supply
Standard series and custom options available for OEM projects and industrial distribution.
4200 Series
The 4200 series double row deep groove ball bearings are commonly used when a compact bearing arrangement requires higher load capacity than a single row deep groove ball bearing. Compared with the 4300 series, the 4200 series is generally more compact and suitable for medium-load applications where housing width is limited.
Suitable Scenarios
- Compact gearbox arrangements
- Power transmission equipment
- Agricultural machinery
- Industrial rotating shafts
Selection Advice: Choose the 4200 series when the design needs a double row structure but still requires a relatively compact width.
4300 Series
The 4300 series double row deep groove ball bearings usually have a wider and more robust structure than the 4200 series. They are selected for applications requiring higher load capacity, stronger bearing support and more stable operation under demanding radial load conditions.
Suitable Scenarios
- Higher-load industrial equipment
- Heavy-duty gearboxes
- Agricultural and construction machinery
- Compact shaft support with higher load demand
Selection Advice: Choose the 4300 series when the application requires higher load capacity and the housing allows a wider bearing.
Open Type
Do not have shields or rubber seals. Suitable for applications where external lubrication is available, heat dissipation is important, or the bearing needs easier inspection.
Suitable For
Clean industrial environment, external lubrication systems, lower friction requirements.
ZZ / 2Z Shielded
Use metal shields on one or both sides to protect from larger particles while keeping friction lower than contact rubber seals.
Suitable For
Electric motors, power transmission units, general machinery, moderate dust environments.
2RS / 2RSR Sealed
Use rubber contact seals to provide better protection against dust, moisture and contamination in maintenance-sensitive environments.
Suitable For
Agricultural machinery, conveyors, outdoor or dusty equipment.
Custom Options
Support custom bore diameter, outside diameter, width, seal type, cage material, grease, clearance, precision grade, outer ring groove, pin, or OEM packaging.
Suitable For
OEM projects, non-standard equipment, replacement parts, special working conditions.
4200 Series vs 4300 Series Double Row Ball Bearings
| Item | 4200 Series | 4300 Series |
|---|---|---|
| Bearing width | More compact | Wider |
| Load capacity | Medium-load double row | Higher load capacity |
| Housing space | Requires less axial space | Requires more axial space |
| Typical applications | Compact gearboxes, pumps | Heavy-duty power transmission |
| Selection suggestion | Choose when width is limited | Choose for max radial load |
Technical Parameters
| Parameter | Specification / Range |
|---|---|
| Bearing Series | 4200 Series, 4300 Series |
| Bore Diameter d / OD D / Width B | Available on request / Customizable |
| Seal / Shield Type | Open, ZZ (Shielded), 2RS (Sealed) |
| Cage Type | Steel cage, Polyamide cage, Brass cage |
| Material | Bearing steel (standard), Custom options |
| Precision Grade | P0, P6, P5, P4, P2 (Available on request) |
| Radial Internal Clearance | C0 (Normal), C3, Custom clearance |
| Load Ratings (Cr / C0r) | Available on request according to model |
| Lubrication | Standard grease, High-temp grease, Custom |
Reference dimension diagram (d, D, B)
Common Double Row Deep Groove Ball Bearing Series
| Series | Common Model Examples | Typical Seal Options | Common Applications | Action |
|---|---|---|---|---|
| 4200 Series | 4200, 4201, 4202, 4203, 4204, 4205, 4206, 4207, 4208, 4209, 4210 | Open / ZZ / 2RS | Gearbox / agricultural machinery / power transmission | |
| 4300 Series | 4300, 4301, 4302, 4303, 4304, 4305, 4306, 4307, 4308, 4309, 4310 | Open / ZZ / 2RS | Higher-load industrial equipment |
How to Choose Double Row Deep Groove Ball Bearings
Confirm model or dimensions
Check bore diameter d, outside diameter D and width B.
Confirm load direction
Clarify radial load, axial load, vibration and whether axial load is continuous or occasional.
Choose the series
4200 series for compact double row arrangements. 4300 series for wider and higher-load arrangements.
Choose open, ZZ or 2RS
Open type for external lubrication. ZZ / 2Z for lower friction. 2RS / 2RSR for better sealing in dusty environments.
Clearance, Cage & Grease
Select C0/C3 clearance, steel/polyamide/brass cage, and specific grease based on speed and temperature.
What to Send for Quotation
- Bearing model
- Dimensions (d / D / B)
- Quantity
- Seal type
- Speed & Load requirements
- Working temperature
- Drawing or sample photo
Where Are Double Row Deep Groove Ball Bearings Used?
Gearboxes
Why: Higher radial load capacity in compact gearbox housings.
Focus: Load rating, clearance, cage material, housing fit.
Agricultural Machinery
Why: Suitable for compact bearing positions with dust, vibration and changing load.
Focus: Seal type, grease, corrosion protection, shock load.
Power Transmission
Why: Supports rotating shafts where radial load and moderate axial load exist.
Focus: Speed, radial load, bearing width, alignment.
Pumps
Why: Stable rotation and compact support for pump shaft arrangements.
Focus: Lubrication, seal type, temperature, noise.
Electric Motors
Why: Low friction and stable running for selected motor and rotating equipment designs.
Focus: Noise, vibration, grease, clearance.
Conveyors
Why: Useful for continuous-duty rotating shafts and compact bearing supports.
Focus: Dust protection, load fluctuation, maintenance interval.
Industrial Machinery
Why: A general solution where a single row bearing is not enough but a compact design is required.
Focus: Model, load, speed, housing size, installation.
Automotive / Service Parts
Why: Used in selected gearbox, pulley, fan or auxiliary bearing positions.
Focus: Interchange model, seal type, temperature, noise.
Common Sourcing Problems & Haron Bearing Solutions
Single row bearing load capacity is not enough.
Solution: Use 4200 or 4300 series double row deep groove ball bearings for higher load capacity in compact arrangements.
Housing space is limited.
Solution: Use one double row bearing instead of two separate single row bearings where the design allows.
Wrong seal type causes overheating or contamination.
Solution: Choose open, ZZ or 2RS according to speed, dust, moisture and maintenance conditions.
Noise and vibration affect equipment performance.
Solution: Apply precision raceway grinding, clean assembly, proper grease and vibration testing.
Bearing fails early in gearbox housing.
Solution: Review fit, load, lubrication, temperature, alignment and possible anti-rotation design.
Customer only has an old bearing number.
Solution: Send model number, dimensions or sample photo. Haron can help check interchange and production feasibility.
Standard product cannot meet the application.
Solution: Custom rings, width, seals, grease, cage material, clearance, pin, groove or thread can be reviewed.
Supplier quality is unstable.
Solution: Haron provides material inspection, process control, dimension inspection, noise/vibration testing and export packaging.
Why Choose Haron Bearing for Double Row Deep Groove Ball Bearings
Factory-Based Manufacturer
Haron Bearing is positioned as a bearing manufacturer, not just a trading website. We support standard double row deep groove ball bearings and project-based OEM / ODM requirements for distributors and equipment manufacturers.
Factory Supply / OEM Support
4200 & 4300 Series Supply
We support common 4200 and 4300 series double row deep groove ball bearings, including open, ZZ / 2Z and 2RS / 2RSR options. Customers can send model numbers, drawings or samples for confirmation.
4200 Series / 4300 Series
Precision Grinding & Raceway
Raceway accuracy affects bearing noise, vibration and service life. Haron focuses on controlled machining, grinding and finishing processes to support stable product performance.
Grinding / Raceway Finish
Seal, Grease & Clearance
Different working environments require different seal and lubrication choices. Haron can help review open, shielded or sealed structures, grease type and internal clearance according to application.
Open / ZZ / 2RS
Noise & Vibration Testing
For motors, pumps and rotating equipment, noise and vibration are important quality indicators. Haron can support inspection requirements for running smoothness, vibration and rotation performance.
Noise Test / Vibration Test
Custom Engineering Support
If standard models cannot meet your design, send your drawing, old bearing model or sample photo. Haron can review customization options such as dimensions, seals, grease, cage, clearance or packaging.
Custom / Drawing Review
Export Packaging & Delivery
For international orders, proper anti-rust treatment, individual packaging, carton packing and pallet protection help reduce transportation risk and improve distributor handling efficiency.
Export Packing / OEM Box
Long-Term B2B Supply
For distributors and OEM buyers, stable supply, model consistency, communication efficiency and batch traceability are important. Haron supports long-term cooperation and repeat orders.
Distributor Support / Batch SupplyQuality Control for Double Row Deep Groove Ball Bearings
Quality is controlled from material to final packing. For each batch, Haron can check key dimensions, clearance, running condition, noise, vibration and appearance according to customer requirements.
Inspection Process
- 1. Incoming Material Inspection
- 2. Heat Treatment Check
- 3. Grinding Accuracy Check
- 4. Assembly Cleanliness Check
- 5. Clearance Inspection
- 6. Noise & Vibration Test
- 7. Torque / Rotation Check
- 8. Seal & Grease Check
- 9. Final Appearance Inspection
- 10. Packing Inspection
Key Inspection Items
Packaging & Delivery for Export Orders
Standard Export Packaging Flow
- 1. Anti-rust treatment
- 2. Individual plastic bag / anti-rust paper
- 3. Single box or neutral box
- 4. Carton packing
- 5. Pallet packing
- 6. Shipping mark and label
- 7. Export shipment
Packaging Options
Documents Available for Your Bearing Project
Bearing Design Comparisons
Double Row vs Single Row Deep Groove Ball Bearings
Single Row
Double Row
| Item | Single Row | Double Row |
|---|---|---|
| Number of ball rows | One | Two |
| Load capacity | Standard | Higher radial load |
| Bearing width | Narrower | Wider than single row |
| Space requirement | Minimal | Compact alternative to two single rows |
Double Row Deep Groove vs Double Row Angular Contact
Deep Groove
Angular Contact
| Item | Double Row Deep Groove | Double Row Angular Contact |
|---|---|---|
| Contact angle | 0° (Radial) | Defined contact angle (e.g., 30°) |
| Main load direction | Heavy radial load | Combined radial & axial load |
| Axial load capacity | Limited | High in both directions |
| Rigidity | Standard | Higher axial rigidity |
FAQ About Double Row Deep Groove Ball Bearings
1. What is a double row deep groove ball bearing?
2. What is the difference between 4200 series and 4300 series?
3. Can they replace double row angular contact ball bearings?
4. What is the difference between open, ZZ and 2RS types?
5. Can Haron Bearing customize double row deep groove ball bearings?
6. What information should I send for quotation?
