What Is the 6803 2RS MTM Bearing?
The 6803 2RS MTM is a single row deep groove ball bearing with dimensions 17x26x5 mm, designed for high rotational speeds and combined radial and moderate axial loads. The 2RS designation indicates rubber contact seals on both sides, protecting the bearing against dust, moisture and contaminants while retaining the factory-filled grease. This bearing is widely used in compact mechanical assemblies where reliable operation, low friction and space-saving dimensions are required.
Bearing Design
The 6803 2RS MTM features:
- Single row deep groove ball bearing design
- Deep raceway geometry
- Double rubber contact seals (2RS)
- Factory-filled grease
- Hardened bearing steel rings
- Cylindrical bore
- Maintenance-free operation under normal conditions
The double sealing system helps extend bearing life by preventing contamination and reducing lubricant loss.
Technical Specification
Manufacturer: MTM
Part Number: 6803 2RS
Bearing Type: Deep Groove Ball Bearing
Design: Single Row
Inside Diameter (d): 17 mm
Outside Diameter (D): 26 mm
Width (B): 5 mm
Seal Type: 2RS (Rubber Contact Seals on Both Sides)
Bore Type: Cylindrical
Lubrication: Factory Greased
Material: Hardened Bearing Steel
How Does a Deep Groove Ball Bearing Work?
A deep groove ball bearing reduces friction between a rotating shaft and a stationary housing by using hardened steel balls running in precision-ground raceways.
Its primary functions include:
- Supporting radial loads
- Carrying moderate axial loads in both directions
- Reducing rotational friction
- Providing smooth and quiet operation
- Increasing equipment reliability
- Extending component service life
Deep groove ball bearings are among the most versatile bearing types used in modern mechanical systems.
Typical Applications
The 6803 2RS MTM is commonly used in:
- Electric motors
- Bicycle hubs
- Pumps
- Gearboxes
- Cooling fans
- Industrial automation
- Small industrial machinery
- Power tools
- Household appliances
- Precision mechanical equipment
- OEM assemblies
- Maintenance and repair (MRO)
Its compact dimensions make it ideal for applications with limited installation space.
Advantages of the 2RS Seal
The 2RS sealing system provides:
- Protection against dust and dirt
- Resistance to moisture ingress
- Grease retention
- Reduced maintenance requirements
- Longer bearing service life
- Reliable operation in contaminated environments
The bearing is supplied pre-lubricated and ready for installation.
How to Select the Correct Bearing
Before installation, verify:
- Shaft diameter
- Housing bore
- Bearing width
- Seal type
- Required load capacity
- Operating speed
- Environmental conditions
Correct bearing selection ensures reliable performance and maximum service life.
Frequently Asked Questions (FAQ)
What are the dimensions of the 6803 2RS MTM bearing?
The bearing has a 17 mm bore, 26 mm outside diameter, and 5 mm width.
What does 2RS mean?
2RS indicates rubber contact seals on both sides of the bearing, providing protection against contamination while retaining lubricant.
Is the bearing pre-lubricated?
Yes. It is supplied with factory-filled grease and is ready for immediate installation.
Where is the 6803 2RS bearing commonly used?
It is widely used in electric motors, bicycle hubs, pumps, fans, gearboxes, power tools and compact industrial equipment.
Can the bearing support axial loads?
Yes. Deep groove ball bearings can support moderate axial loads in both directions in addition to radial loads.
What are the advantages of rubber seals?
Rubber seals provide better protection against dust, moisture and contaminants than metal shields, helping to extend bearing service life.
