Industrial equipment has changed dramatically over the last decade. Manufacturers are no longer focused only on increasing production capacity—they are also looking for lighter, smaller and more energy-efficient machines.

This trend has created a growing demand for thin section bearings that can deliver reliable performance without increasing the size of the equipment.

Among these products, the 6805 bearing has become one of the most widely selected solutions for compact rotating systems.

Standard Dimensions

The 6805 bearing follows international dimensional standards and can be used as a direct replacement for equivalent products from other manufacturers.

Why Automation Equipment Uses 6805 Bearings

Automation systems require components that can operate continuously with minimal maintenance.

The 6805 bearing offers several important advantages:

• Compact dimensions
• Stable running accuracy
• Low friction
• High rotational efficiency
• Easy integration into lightweight designs

These characteristics help equipment manufacturers reduce overall machine size while maintaining dependable performance.

A Popular Choice for Servo Motor Designers

Servo motors demand smooth rotation and accurate positioning.

Because the 6805 bearing combines a slim cross-section with reliable radial load capacity, it is frequently used in servo drive systems where installation space is limited.

When paired with high-quality grease and precision machining, the bearing contributes to quieter operation and improved positioning accuracy.

Supporting the Growth of Industrial Robotics

Modern industrial robots contain multiple rotating joints, compact gear systems and lightweight drive mechanisms.

Every millimetre saved inside these assemblies allows designers to optimise weight distribution and increase movement efficiency.

The 6805 bearing supports these objectives by offering:

• Reduced cross-sectional size
• Consistent rotational accuracy
• Reliable long-term performance
• Low operating resistance

For robotic equipment, these benefits are often more valuable than simply selecting a larger bearing.

Medical Equipment Requires Reliability

Medical devices frequently operate under demanding conditions where precision and reliability are essential.

Typical applications include:

• Diagnostic equipment
• Laboratory automation
• Medical pumps
• Imaging systems

The 6805 bearing provides stable rotation while supporting compact mechanical layouts required in modern healthcare equipment.

Choosing the Right Seal Design

Different operating environments require different sealing solutions.

Open Bearing

Suitable for externally lubricated systems where maintenance is scheduled.

6805ZZ

Double metal shields provide excellent high-speed performance while protecting against larger contaminants.

Recommended for:

• Electric motors
• Indoor automation
• Precision machinery

6805-2RS

Rubber seals offer superior protection against dust and moisture.

Recommended for:

• Packaging equipment
• Food machinery
• Agricultural equipment
• Outdoor automation

Engineering Considerations

Selecting a thin section bearing should never be based on dimensions alone.

Before specifying a 6805 bearing, engineers should evaluate:

• Operating speed
• Working temperature
• Expected service life
• Radial and axial loads
• Shaft accuracy
• Lubrication method
• Environmental contamination

Careful evaluation at the design stage helps maximise equipment reliability.

NKMB Manufacturing Standards

NKMB manufactures 6805 bearings using advanced production technology and strict inspection procedures.

Every bearing passes through multiple quality control stages, including:

• Steel material verification
• Precision grinding
• Heat treatment control
• Noise testing
• Vibration inspection
• Dimensional measurement
• Final appearance inspection

This ensures consistent quality for OEM manufacturers and industrial distributors worldwide.

OEM Services

NKMB supports customers with flexible manufacturing solutions.

Available options include:

• OEM branding
• Laser marking
• Customized packaging
• Grease selection
• Clearance customization
• Precision grade selection

These services allow equipment manufacturers to create products tailored to their own market requirements.

Frequently Asked Questions

What are the dimensions of a 6805 bearing?

The standard dimensions are 25 × 37 × 7 mm.

Is the 6805 bearing suitable for robotics?

Yes. Its compact design and smooth rotational performance make it an excellent choice for robotic systems and automation equipment.

Which version should I choose?

ZZ bearings are recommended for clean, high-speed environments, while 2RS bearings provide better protection against dust and moisture.

Does NKMB provide OEM services?

Yes. NKMB supplies customized bearings for distributors, equipment manufacturers and private-label customers worldwide.

Conclusion

The 6805 bearing is more than just a standard thin section bearing. Its combination of compact dimensions, reliable performance and design flexibility makes it an excellent choice for modern automation equipment, robotics, medical devices and precision machinery.

By combining advanced manufacturing processes with comprehensive OEM capabilities, NKMB delivers bearing solutions that help customers build smaller, lighter and more reliable equipment.