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6804ZZ Bearing Dimensions, Specifications and Applications | NKMB

Deep Groove Ball Bearings/

6804ZZ Bearing Dimensions, Specifications and Applications | NKMB

  • Model: 6804ZZ
  • Inner diameter: 20mm
  • Outer diameter: 32mm
  • Width: 7mm
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  • Product Details

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

ParameterValue
Bearing Model6804ZZ
Bearing TypeDeep Groove Ball Bearing
Inner Diameter (d)20 mm
Outer Diameter (D)32 mm
Width (B)7 mm
Shield TypeDouble Metal Shields (ZZ)
MaterialGCr15 Chrome Steel
Precision GradeP0 / P6 / P5
LubricationHigh Quality Grease
BrandNKMB


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

ModelDescription
6804 OpenOpen Type Bearing
6804ZZDouble Metal Shields
6804-2RSDouble Rubber Seals
S6804ZZStainless Steel Shielded Bearing
S6804-2RSStainless Steel Sealed Bearing

6804ZZ vs 6704ZZ

ModelSize (mm)Advantages
6704ZZ20×27×4Ultra-Thin Design
6804ZZ20×32×7Better 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.

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