Shielded Deep Groove Ball Bearings Manufacturer
Haron Bearing supplies ZZ and 2Z shielded deep groove ball bearings for electric motors, pumps, fans, conveyors, gearboxes and general rotating equipment. Designed for grease retention, low noise, high-speed rotation and stable B2B supply.
Reliable ZZ / 2Z Shielded Deep Groove Ball Bearings for B2B Supply
Shielded deep groove ball bearings use metal shields on one or both sides of the bearing to help retain grease and reduce the entry of larger dry contaminants. Compared with rubber sealed bearings, shielded bearings usually provide lower friction and higher speed capability, making them suitable for motors, fans, office equipment, conveyors and general industrial rotating parts.
Grease Retention
Metal shields help keep lubricant inside the bearing for stable operation.
Low Friction
Non-contact metal shields help reduce running resistance compared with contact rubber seals.
High-Speed Use
Suitable for applications requiring smooth rotation and low vibration.
Cost-Effective Protection
A practical choice when the working environment is relatively
What Are Shielded Deep Groove Ball Bearings?
Shielded deep groove ball bearings are single-row deep groove ball bearings fitted with metal shields. A bearing with one shield is usually marked as Z, while a bearing with shields on both sides is commonly marked as ZZ or 2Z. The shield does not usually contact the inner ring in the same way as a rubber contact seal, so it helps maintain lower friction while offering basic protection against dry particles and grease leakage.
Open Type Structure
Shielded Type (ZZ / 2Z)
Best used for:
- • Electric motors
- • Fans and blowers
- • Office equipment
- • Conveyors
- • Gearboxes
- • Light industrial machinery
Not ideal for:
- • Heavy water exposure
- • Muddy or wet working conditions
- • High chemical contamination
- • Applications requiring maximum sealing performance
Shielded Deep Groove Ball Bearing Specifications
| Product Name | Shielded Deep Groove Ball Bearings |
|---|---|
| Bearing Type | Single Row Deep Groove Ball Bearing |
| Shield Type | Z / ZZ / 2Z Metal Shield |
| Material | Chrome Steel GCr15 / 52100 Stainless Steel 440C / 304 / 316 optional Hybrid Ceramic optional |
| Precision Grade | P0 / P6 / P5 / P4 / P2 |
| Clearance | CN / C2 / C3 / C4 |
| Cage Options | Pressed Steel Cage, Brass Cage, Nylon / PA Cage optional |
| Series | 6000, 6200, 6300, 6400, 6800, 6900, 16000, Miniature, Inch optional |
| Bore Range | Customized according to model and drawing |
| Lubrication | Standard grease, Low-noise grease, High-temperature grease, Food-grade grease optional |
| Noise / Vibration Level | Z1 / Z2 / Z3 / Z4, V1 / V2 / V3 / V4 available on request |
| Service & Lead Time | OEM / ODM / Custom manufacturing. 4–8 weeks lead time. |
Need a specific model?
Send us your bearing number or drawing.
Shielded Deep Groove Ball Bearing Types We Supply
We manufacture a wide range of standard and customized shielded ball bearings for various industrial applications, backed by strict quality control and advanced production lines.
6000 Series
Light-duty and compact design primarily engineered for small motors, cooling fans, office equipment, and light industrial machinery.
- High-Speed Performance: Optimized for rapid rotation with minimal friction and heat generation.
- Space-Saving Design: Compact dimensions make it ideal for space-constrained mechanical assemblies.
- Versatile Fitment: Available in multiple clearance grades to ensure precise installation and operation.
6200 Series
A versatile medium-duty series widely implemented in electric motors, fluid pumps, conveyor systems, and general industrial equipment.
- Balanced Load Capacity: Delivers an excellent ratio of radial load endurance to rotational speed.
- Robust Construction: Manufactured with high-grade steel for reliable, long-term continuous performance.
- Maintenance-Free: Factory pre-lubricated with premium grease and shielded to prevent contamination.
6300 Series
Designed for higher load capacities, making it the standard choice for gearboxes, agricultural machinery, heavy motors, and power transmission systems.
- Heavy-Duty Endurance: Engineered to withstand significant radial and moderate axial loads.
- Shock Resistance: Features thickened inner and outer rings for enhanced structural integrity under stress.
- Extended Lifespan: Strict quality control ensures durability in the most demanding industrial environments.
6800 / 6900 Series
Specialized thin-section design tailored for compact equipment, lightweight mechanical assemblies, and applications with limited installation space.
- Weight Optimization: Significantly reduced cross-section saves valuable weight and space.
- High Rigidity: Maintains exceptional structural stiffness despite the ultra-thin profile.
- Advanced Applications: The perfect solution for modern robotics, drones, and high-tech precision instruments.
Miniature Bearings
Ultra-small size bearings meticulously crafted for sensitive instruments, micro motors, intricate robotics components, and precision medical devices.
- Micro Scale: Bore sizes starting from under 10mm to fit the smallest applications.
- Exact Tolerances: Manufactured to strict precision standards for ultra-smooth, jitter-free operation.
- Low Torque: Friction-optimized characteristics ensure high efficiency in low-power micro motors.
Stainless Steel
Purpose-built for environments requiring superior corrosion resistance, hygienic surfaces, or non-magnetic bearing properties.
- Premium Materials: Constructed from high-grade 440C, 304, or 316 stainless steel variants.
- Corrosion Resistance: Highly resilient against moisture, harsh chemicals, and oxidative environments.
- Industry Compliant: The optimal choice for food processing, pharmaceutical, and marine applications.
High Precision
Engineered for applications demanding ultra-low noise, minimal vibration, and absolute rotational stability at high speeds.
- Extreme Accuracy: Available in advanced precision grades up to P2 level for exacting requirements.
- Vibration Control: Strict manufacturing tolerances ensure virtually zero runout and operational noise.
- Critical Applications: Essential for CNC machine tool spindles, aerospace components, and optical devices.
Custom Bearings
Fully customizable bearing solutions tailored to your specific blueprints, from unique bore sizes to specialized lubrication and proprietary cage designs.
- End-to-End Customization: Comprehensive OEM/ODM support from initial prototyping to mass production.
- Tailored Specifications: Modify OD, width, internal clearance, shield types, and material composition.
- Scalable Manufacturing: Backed by 100 advanced production lines to ensure rapid scaling and delivery.
Shielded vs Open vs Sealed Deep Groove Ball Bearings
Understanding the difference in protection structures to choose the right bearing for your working environment.
Open Type
Shielded Type (Z / ZZ / 2Z)
Sealed Type (RS / 2RS)
| Feature | Open Type | Shielded Type (Z / ZZ) | Sealed Type (RS / 2RS) |
|---|---|---|---|
| Protection | Lowest | Medium (against dry particles) | Higher (against dust and moisture) |
| Friction | Very low | Low | Higher than shielded type |
| Speed | High | High | Medium to high (depends on seal) |
| Grease Retention | Requires external lubrication | Good grease retention | Very good grease retention |
| Best For | Clean environments, relubrication systems | Motors, fans, conveyors, dry industrial equipment | Dusty or wet environments, outdoor or dirty applications |
Selection Advice:
Choose shielded deep groove ball bearings when the working environment is relatively clean and dry, but the bearing still needs grease retention, basic contamination protection, low friction and high-speed performance.
Common Problems Solved by Haron Shielded Deep Groove Ball Bearings
Engineered in Cixi City for global industrial applications. Discover how our precision manufacturing resolves critical operational challenges for enterprise clients worldwide.
Grease Leakage in High-Speed Operation
- Precision Shielding: ZZ / 2Z metal shields are engineered for zero-clearance retention, preventing lubricant loss even in high-RPM industrial machinery.
- Thermal Stability: Optimized premium grease selection withstands extreme operational temperatures, ideal for automotive and continuous manufacturing applications.
- Extended Lifespan: Significantly reduces maintenance frequency for global assembly lines, ensuring stable, long-term rotation.
Noise & Vibration in Electric Motors
- P2-Level Precision: Advanced raceway super-finishing and strict ball grade control minimize micro-vibrations for ultra-quiet performance.
- Acoustic Optimization: Custom internal clearance (C3/CN) tailored specifically for sensitive home appliances and modern EV motors.
- Rigorous Testing: 100% automated acoustic and vibration inspection guarantees consistent low-noise delivery for demanding enterprise clients.
Unstable Supplier Quality
- Mass Production Scale: Over 100 advanced automated production lines ensure stable, high-volume output for wholesale distributors worldwide.
- End-to-End Traceability: Comprehensive batch tracking from raw steel procurement to final export, ensuring zero defect tolerance.
- Global Compliance: Strict quality control systems meeting international industrial standards for seamless cross-border integration.
Wrong Bearing Suffix Selection
- Engineering Consultation: Expert guidance on selecting optimal sealing (Z, ZZ, 2RS) and clearance (C3, CN, P5) for specific operational environments.
- Customization Capabilities: Dedicated OEM/ODM support for non-standard requirements, translating complex technical drawings into exact specifications.
- Application Matching: Tailored solutions for agricultural machinery, power tools, and precision instruments to maximize mechanical efficiency.
Difficult Model Replacement
- Seamless Cross-Referencing: Rapid identification and matching of competitor models, dimensional data, or legacy bearing numbers.
- Reverse Engineering: Advanced R&D capabilities to analyze physical samples and replicate or improve upon existing component designs.
- Rapid Prototyping: Fast turnaround on custom samples, minimizing downtime for industrial equipment maintenance and system upgrades.
Long Lead Time & Communication
- Factory-Direct Efficiency: Streamlined manufacturing at our Cixi City facility guarantees competitive 4–8 week lead times for bulk orders.
- Transparent Logistics: Real-time production updates and dedicated account managers ensuring clear, responsive global communication.
- Strategic Export Hub: Optimized shipping routes and customs expertise facilitate rapid, reliable delivery to international markets.
Why Choose Haron as Your Shielded Deep Groove Ball Bearing Manufacturer?
20+ Years Experience
Haron Bearing has long-term experience in ball bearing manufacturing. We support B2B buyers with stable quality, technical communication and factory-direct supply.
100 Production Lines
Our production system supports stable output for standard and customized bearing orders. Suitable for importers, distributors and OEM customers.
P2 / P4 / P5 Precision
For applications requiring higher accuracy, low vibration and smooth operation, Haron can provide precision grades according to project requirements.
OEM & ODM Customization
We can customize material, clearance, cage, grease, shield type, noise level, packaging and marking based on your application.
Strict Quality Control
Our QC team checks dimensions, roundness, radial clearance, vibration, noise, surface finish and packaging before shipment.
Fast Technical Response
Send us your model number, drawing, application or failed sample information. Our engineers can help recommend the suitable shielded bearing type.
Applications of Shielded Deep Groove Ball Bearings
Electric Motors
Suitable for high-speed motor rotation where low friction, low noise and grease retention are important.
Industrial Fans
ZZ / 2Z shielded bearings help support smooth fan shaft rotation in relatively clean and dry environments.
Pumps & Compressors
Used in pump and compressor support positions where stable rotation and compact bearing design are required.
Conveyors & Rollers
A practical solution for conveyor rollers, light-duty material handling systems and general transmission.
Gearboxes
Supports radial load and moderate bidirectional axial load in compact mechanical assemblies.
Office Equipment
Miniature and small shielded bearings support smooth operation in printers, copiers, small motors.
Agricultural Mach
Used in dry machinery positions where moderate protection and cost-effective bearing supply are needed.
Textile Machinery
Low-noise and stable rotation options for high-speed textile equipment and production lines.
How to Choose the Right Shielded Deep Groove Ball Bearing
Confirm Bearing Size
Check bore diameter, outer diameter and width. You can send us the bearing model, drawing or sample photo.
Choose Series
6000 series for light-duty applications, 6200 series for general medium-duty use, 6300 series for higher radial load, 6800 / 6900 series for thin-section designs.
Choose Shield Type
Z means one metal shield. ZZ or 2Z means metal shields on both sides. Choose ZZ / 2Z for better grease retention and basic protection.
Choose Clearance
Use CN for standard applications. Choose C3 when there is interference fit, higher temperature, high-speed operation or thermal expansion concerns.
Precision & Noise Level
For electric motors, fans, office equipment and precision devices, consider P6 / P5 precision and low-noise grades.
Confirm Environment
If the application is very wet, dusty or contaminated, consider sealed deep groove ball bearings instead of shielded type.
Send your working conditions and model number. Haron engineers will help you choose the right bearing.
Manufacturing & Quality Control for Stable B2B Supply
From raw material to final packaging, Haron implements strict quality control to ensure every shielded deep groove ball bearing meets your B2B requirements.
Production Process
- 1. Raw Material Inspection
- 2. Ring Forging / Turning
- 3. Heat Treatment
- 4. Grinding & Superfinishing
- 5. Ball and Cage Assembly
- 6. Grease Filling
- 7. Shield Installation
- 8. Anti-Rust Packaging
QC Items
- - Dimension Inspection
- - Radial Clearance
- - Noise Level Testing
- - Vibration Level Testing
- - Raceway Finish
- - Roundness & Hardness
- - Shield Fit & Grease
- - Packaging Inspection
CAD, Drawing and Model Number Support
Haron supports buyers who need fast model confirmation, drawing review, replacement bearing selection or customized shielded deep groove ball bearings. You can send us your bearing number, old sample photo, CAD drawing, 2D drawing or application information.
Information you can submit:
- Bearing model number
- Bore / OD / width
- Shield type: Z / ZZ / 2Z
- Clearance: CN / C3 / C4
- Precision grade
- Working speed / temp
Related Deep Groove Ball Bearing Products
Deep Groove Ball Bearings
Explore Haron’s full range of deep groove ball bearings for industrial applications.
Open Deep Groove Ball Bearings
For clean environments and applications requiring external lubrication or maximum low friction.
Sealed Deep Groove Ball Bearings
For dusty, wet or contaminated working conditions requiring stronger sealing performance.
2RS Deep Groove Ball Bearings
Rubber sealed deep groove ball bearings for better dust and moisture protection.
Single Row Deep Groove Ball Bearings
General-purpose single row design for motors, pumps, fans and machinery.
Double Row Deep Groove Ball Bearings
Higher radial load capacity when single row bearings are not enough.
Stainless Steel Deep Groove Ball Bearings
Corrosion-resistant bearing options for special environments.
Angular Contact Ball Bearings
For applications requiring higher axial rigidity and precision support.
