The 6804ZZ bearing is a thin section deep groove ball bearing designed for applications requiring compact dimensions, reliable performance and high rotational accuracy. Featuring double metal shields (ZZ), this bearing provides effective protection against dust and contaminants while maintaining low friction and smooth operation.
NKMB manufactures high-quality 6804ZZ bearings using premium chrome steel and advanced production technology, ensuring excellent durability, low noise and long service life.
6804ZZ Bearing Dimensions
| Parameter | Value |
|---|---|
| Bearing Model | 6804ZZ |
| Bearing Type | Deep Groove Ball Bearing |
| Inner Diameter (d) | 20 mm |
| Outer Diameter (D) | 32 mm |
| Width (B) | 7 mm |
| Shield Type | Double Metal Shields (ZZ) |
| Material | GCr15 Chrome Steel |
| Precision Grade | P0 / P6 / P5 |
| Lubrication | High Quality Grease |
| Brand | NKMB |
Key Features of NKMB 6804ZZ Bearings
Thin Section Design
The 6804ZZ bearing belongs to the 6800 series thin section bearings. Its compact structure allows engineers to reduce overall equipment size and weight without compromising performance.
Double Shield Protection
Metal shields on both sides help prevent dust and debris from entering the bearing, reducing maintenance requirements and extending bearing life.
Low Friction and High Speed
Optimized raceway geometry and precision steel balls ensure smooth rotation, low operating temperature and excellent high-speed performance.
Low Noise and Vibration
Each NKMB bearing undergoes strict quality inspection to ensure quiet operation and stable performance.
Long Service Life
Premium bearing steel combined with advanced heat treatment technology improves hardness, wear resistance and fatigue strength.
Applications of 6804ZZ Bearings
The 6804ZZ bearing is widely used in industries requiring compact size and reliable performance.
Industrial Robots
Used in robotic joints, motion control systems and precision automation equipment.
Servo Motors
Provides smooth and efficient rotation in high-performance servo motor systems.
Electric Motors
Suitable for compact motors requiring low noise and long-term reliability.
Medical Equipment
Widely used in diagnostic instruments, laboratory equipment and medical devices.
Automation Systems
Ideal for conveyors, precision machinery and automated production lines.
Drones and UAVs
The lightweight structure makes it an excellent choice for drones and unmanned aerial vehicles.
Benefits of Choosing NKMB 6804ZZ Bearings
Professional Bearing Manufacturer
NKMB specializes in thin section bearings, miniature bearings, deep groove ball bearings and customized OEM solutions.
Strict Quality Control
All bearings undergo:
- Dimensional Inspection
- Noise Testing
- Vibration Analysis
- Rotation Accuracy Testing
- Material Hardness Inspection
OEM & ODM Service
NKMB supports:
- Custom Logo Marking
- Custom Packaging
- Special Lubricants
- Customized Clearance
- Stainless Steel Versions
Global Export Experience
NKMB bearings are exported to Europe, North America, Southeast Asia, South America and other international markets.
Available Variants
| Model | Description |
| 6804 Open | Open Type Bearing |
| 6804ZZ | Double Metal Shields |
| 6804-2RS | Double Rubber Seals |
| S6804ZZ | Stainless Steel Shielded Bearing |
| S6804-2RS | Stainless Steel Sealed Bearing |
6804ZZ vs 6704ZZ
| Model | Size (mm) | Advantages |
| 6704ZZ | 20×27×4 | Ultra-Thin Design |
| 6804ZZ | 20×32×7 | Better Load Capacity |
If installation space is extremely limited, the 6704ZZ is recommended. For applications requiring higher load capacity and longer service life, the 6804ZZ is often the better choice.
Frequently Asked Questions
What are the dimensions of a 6804ZZ bearing?
The standard dimensions are:
- Inner Diameter: 20 mm
- Outer Diameter: 32 mm
- Width: 7 mm
What does ZZ mean in 6804ZZ?
ZZ indicates that the bearing is equipped with metal shields on both sides to protect against dust and contamination.
Can NKMB provide customized 6804ZZ bearings?
Yes. NKMB offers OEM and ODM services including custom logos, packaging, grease types and special bearing specifications.
Is the 6804ZZ suitable for robotics applications?
Yes. The 6804ZZ is widely used in industrial robots, collaborative robots and precision automation systems due to its compact design and reliable performance.
Why Choose NKMB Bearings?
With years of manufacturing experience and strict Japanese-style quality management, NKMB provides reliable bearing solutions for customers worldwide. Our thin section bearings are trusted in robotics, motors, automation equipment, medical devices and industrial machinery.
For quotations, technical support or OEM projects, contact NKMB today.
Deep Groove Ball Bearings & Motor Bearings Manufacturer | NKMB















