6905RS 6905zz 25x42x9mm Sealed Ball Bearings
Structure:Deep Groove Applicable
Industries:machines
Bore Size:25mm
Size:25*42*9mm
Model Number:6905rs/zz
Precision Rating:P0,P6,P5,P4,P2
Seals Type:RS, ZZ
Number of Row:Single row
Place of Origin:Zhejiang, China
Material of bearing:Chrome Steel
6905RS Sealed Ball Bearing (25×42×9 mM)
A Space-Saving Bearing Solution for Modern Industrial Equipment
Not every application has room for a standard bearing series. In compact drive systems, lightweight machinery, and equipment where installation space is limited, engineers often turn to thin-section bearings that can deliver reliable performance without increasing overall assembly size.
The 6905RS sealed ball bearing is designed specifically for these situations. With a slim profile of 25×42×9 mm, it combines compact dimensions, smooth operation, and effective sealing protection in a single bearing solution.
Whether used in electric motors, cycling components, automation equipment, or industrial machinery, the 6905RS helps reduce maintenance demands while supporting stable rotational performance.
What Makes the 6905RS Different?
Unlike standard 6200-series bearings, the 6905RS belongs to a thin-section bearing family. The reduced cross-section allows engineers to design more compact assemblies without sacrificing rotational accuracy.
For manufacturers developing lightweight equipment or space-sensitive mechanical systems, this design can offer important advantages:
Reduced installation space
Lower overall assembly weight
Smooth running performance
Effective grease retention
Protection against airborne contaminants
These characteristics make the 6905RS a practical choice for both OEM production and replacement maintenance programs.
Product Specifications
| Item | Value |
|---|---|
| Bearing Model | 6905RS |
| Bearing Type | Deep Groove Ball Bearing |
| Inner Diameter | 25 mm |
| Outer Diameter | 42 mm |
| Width | 9 mm |
| Sealing Design | Rubber Seal |
| Material | High Carbon Chrome Steel |
| Precision Grade | P0 / P6 / P5 |
| Internal Clearance | C0 / C3 |
| Lubrication | Pre-Greased |
| Operating Temperature | -20°C to +120°C |
Why Engineers Select Thin-Section Bearings
When equipment designers need to reduce size without compromising performance, bearing selection becomes critical.
| Design Requirement | Benefit of 6905RS |
|---|---|
| Compact housing design | Thin cross-section saves space |
| Dust protection | Integrated rubber seal |
| Reduced maintenance | Factory lubricated |
| Quiet operation | Precision-ground raceways |
| Reliable service life | Heat-treated bearing steel |
| Smooth rotation | Controlled internal geometry |
For many applications, a thinner bearing profile can simplify the overall equipment design and reduce manufacturing complexity.
Common Industry Applications
The 6905RS is frequently specified in equipment where space efficiency and sealing performance are important.
Industrial Equipment
Compact gearboxes
Packaging machinery
Conveyor rollers
Material handling systems
Motion & Automation
Servo motor assemblies
Robotics systems
Linear motion equipment
Automated production machinery
Transportation & Mobility
Electric bicycles
Scooters
Fitness equipment
Recreational vehicles
General Mechanical Systems
Pumps
Small generators
Agricultural equipment
Ventilation systems
Inspection Standards
Before shipment, bearings are inspected for critical performance indicators.
| Inspection Item | Purpose |
|---|---|
| Dimensional Accuracy | Verify interchangeability |
| Raceway Finish | Improve rotational smoothness |
| Radial Clearance | Ensure correct operating fit |
| Noise Testing | Detect assembly defects |
| Vibration Analysis | Improve running stability |
| Grease Inspection | Maintain lubrication consistency |
These checks help reduce quality variations and improve long-term reliability.
FAQ
Is the 6905RS suitable for outdoor applications?
The rubber seal provides protection against dust and light moisture, making it suitable for many outdoor applications. For highly corrosive environments, stainless steel versions may be recommended.
What is the advantage of a thin-section bearing?
Thin-section bearings allow engineers to reduce equipment size and weight while maintaining reliable rotational performance.
Is the bearing supplied with lubricant?
Yes. Standard 6905RS bearings are factory-greased and ready for installation.
Can this bearing be used in electric motors?
Absolutely. The 6905RS is commonly used in compact motors, drive systems, and automated equipment requiring smooth and quiet operation.
Do you provide customized packaging?
Yes. OEM packaging, barcode labeling, private branding, and laser marking services are available.
What clearance options can be supplied?
Standard C0 and C3 clearance versions are available. Other specifications can be discussed based on application requirements.
Can samples be provided before bulk orders?
Yes. Sample orders are available for evaluation and qualification before production purchasing.
Products Description
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