Ball Bearings
Deep Groove Ball Bearing
The NU/NJ/NUP/N/NF/NP cylindrical roller bearings are engineered for high radial load capacity, low friction, and long-term operational reliability. With a compact structure and high rigidity, this bearing series maintains excellent running accuracy under high-speed or heavy-load conditions. By optimizing roller and raceway geometry and applying high-precision manufacturing processes, these bearings deliver higher efficiency, extended service life, and reduced maintenance requirements in industrial transmission systems.
Key Features
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High Radial Load Capacity
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Low Friction and High Operating Efficiency
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High Rigidity and Precision Performance
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Multiple Structural Types (NU / NJ / NUP / N / NF / NP)
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Long Service Life and Reduced Maintenance
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Wide Size Range and Customization Support
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Description
Reviews
6000 Series – Standard Deep Groove Ball Bearing
Most Popular Customizable Low MOQ (200 pcs)
6000 series is the most widely used deep groove ball bearing, offering an excellent balance of load capacity, speed, and compact design for general-purpose applications.
- Inner Diameter (d): 10–130 mm
- Outer Diameter (D): 26–200 mm
- Width (B): 8–33 mm
- Basic Dynamic Load Rating (Cr): 4,600–82,000 N
- Basic Static Load Rating (C₀r): 2,000–73,000 N
- Limiting Speed (Grease): 4,600–26,000 rpm
6200 Series – Light Deep Groove Ball Bearing
Higher Load Capacity Customizable Low MOQ (200 pcs)
6200 series features a larger ball complement than the 6000 series, providing higher radial and axial load capacity while maintaining a compact cross-section.
- Inner Diameter (d): 10–130 mm
- Outer Diameter (D): 30–230 mm
- Width (B): 9–40 mm
- Basic Dynamic Load Rating (Cr): 5,100–133,000 N
- Basic Static Load Rating (C₀r): 2,400–105,000 N
- Limiting Speed (Grease): 4,400–22,000 rpm
6300 Series – Medium Deep Groove Ball Bearing
Heavy Duty Customizable Low MOQ (200 pcs)
6300 series has a larger ball complement and heavier races, providing greater radial, thrust, and combined load capacities for heavy-duty industrial applications.
- Inner Diameter (d): 10–130 mm
- Outer Diameter (D): 35–280 mm
- Width (B): 11–58 mm
- Basic Dynamic Load Rating (Cr): 8,060–183,700 N
- Basic Static Load Rating (C₀r): 3,400–153,100 N
- Limiting Speed (Grease): 4,200–20,000 rpm
6400 Series – Heavy Deep Groove Ball Bearing
Maximum Load Customizable Low MOQ (200 pcs)
6400 series is the heaviest standard deep groove ball bearing series, designed for applications requiring maximum radial load capacity with robust construction.
- Inner Diameter (d): 15–130 mm
- Outer Diameter (D): 42–280 mm
- Width (B): 13–58 mm
- Basic Dynamic Load Rating (Cr): 11,200–208,000 N
- Basic Static Load Rating (C₀r): 5,600–176,000 N
- Limiting Speed (Grease): 3,600–16,000 rpm
61000 Series – Thin-Section Deep Groove Ball Bearing
Space-Saving Customizable Low MOQ (200 pcs)
61000 series thin-section deep groove ball bearings feature a reduced cross-section for weight-sensitive and space-limited applications while maintaining reliable performance.
- Inner Diameter (d): 10–200 mm
- Outer Diameter (D): 22–280 mm
- Width (B): 6–24 mm
- Basic Dynamic Load Rating (Cr): 2,700–68,000 N
- Basic Static Load Rating (C₀r): 1,180–53,000 N
- Limiting Speed (Grease): 5,000–30,000 rpm
Sealed & Shielded Deep Groove Ball Bearing
Pre-lubricated Maintenance-Free Low MOQ (200 pcs)
Sealed (2RS) and shielded (ZZ) variants provide built-in contamination protection and pre-lubricated convenience, ideal for harsh environments and maintenance-free operations.
- Shield Type (ZZ): Metal shields, low friction, high-speed capable
- Seal Type (2RS): Rubber contact seals, superior dust/moisture protection
- Available Series: 6000, 6200, 6300, 61000
- Operating Temp (Standard): −20 to +120 °C
- Lubrication: Factory pre-filled high-performance grease
- Speed Rating: 50–60% of open bearing rating (sealed)
Applications
Electric Motors & Generators
The most widely used bearing in electric motors, providing low friction, quiet operation, and long service life for continuous rotation.
Gearboxes & Power Transmission
Precision support for gear shafts ensuring efficient power transfer, smooth rotation, and minimal energy loss in transmission systems.
Automotive & Household Appliances
Reliable performance in alternators, pumps, washing machines, fans, and vacuum cleaners requiring quiet, maintenance-free operation.
Pumps, Compressors & Conveyors
Robust bearing solutions for fluid handling equipment and material transport systems operating under continuous radial and axial loads.
About BOM Bearing
BOM Bearing is a professional manufacturer and supplier of high-quality deep groove ball bearings, delivering reliable and cost-effective solutions for industrial applications worldwide.
- Quality Assurance: ISO 9001 certified manufacturing with strict quality control at every production stage
- Full Series Coverage: Complete range from miniature (3 mm bore) to large (400 mm bore) across all standard series
- Custom Solutions: Tailored bearing designs including special clearance, precision grades (ABEC 1–9), and cage materials
- Technical Support: Professional engineering team for product selection, application analysis, and troubleshooting
- Fast Delivery: Efficient production lines and global logistics network ensuring timely delivery
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Frequently Asked Questions (FAQ)
What is the difference between the 6000, 6200, and 6300 series?
They differ mainly in cross-section size and load capacity for the same bore diameter. The 6000 series is the most compact, 6200 offers higher load capacity with a slightly larger OD, and 6300 provides the heaviest load capacity with the largest cross-section.
Should I choose shielded (ZZ) or sealed (2RS) bearings?
Shielded (ZZ) bearings use non-contact metal shields with lower friction, suitable for high-speed and clean environments. Sealed (2RS) bearings use rubber contact seals for superior dust and moisture protection, ideal for harsh or contaminated environments. Sealed bearings have a lower speed rating (50–60% of open type).
Can deep groove ball bearings handle axial loads?
Yes, deep groove ball bearings can accommodate both radial loads and moderate axial loads in both directions, thanks to their deep raceway grooves. However, for heavy axial loads, angular contact ball bearings or thrust bearings are recommended.
What clearance grade should I select (C2, CN, C3, C4)?
CN (Normal) is the standard clearance for most applications. C3 (greater than normal) is recommended for high-temperature environments or tight interference fits. C2 (less than normal) is used for precision applications with minimal play. C4 is for extreme temperature differentials.
Can BOM provide custom deep groove ball bearings?
Yes, we offer customization including special dimensions, precision grades (ABEC 1–9), internal clearance classes (C2–C4), cage materials (pressed steel, brass, polyamide), sealing options, and special surface treatments.
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