SKF 6203 bearing is a type of bearing commonly used in rotating assemblies of industrial machinery and equipment. With dimensions of 17 × 40 × 12 mm, the 6203 bearing is available in different configurations with shields, seals, and internal clearances to suit various installation conditions. This article covers the structure, dimensions, variants, applications, and selection criteria for the SKF 6203 bearing.
What Is an SKF 6203 Bearing?
SKF 6203 bearing is a single-row deep groove ball bearing from SKF's 6200 series. It is designed to support rotational movement and reduce friction between machine components. The 6203 designation identifies the bearing's basic series and dimensions, while SKF is the manufacturer. In practice, the product is also commonly referred to as an SKF 6203 ball bearing.
The 6203 bearing features a common deep groove ball bearing design and is suitable for various rotating assemblies in machinery and industrial equipment. Depending on the configuration, the 6203 bearing is available as an open bearing, 6203-2Z, or 6203-2RSH, with the suffix indicating the type of shield or seal.
SKF 6203 Bearing Construction
- Inner ring: Mounted directly onto the rotating shaft and transfers rotational movement to the balls.
- Outer ring: Located around the outside of the bearing assembly and typically fitted into a housing or machine body to secure the bearing in position.
- Steel balls: Positioned between the inner and outer rings. They provide rolling contact to reduce friction during operation.
- Cage: Keeps the balls evenly spaced around the raceway, preventing excessive contact between the balls and maintaining stable movement.
With its deep groove design, the SKF 6203 bearing can accommodate radial loads and limited axial loads, making it suitable for rotating assemblies that require reduced friction and stable operation.
SKF 6203 Bearing Dimensions and Specifications
The following specifications are important when selecting a replacement bearing or designing a new bearing assembly, as the bearing dimensions must match the shaft and housing.
| Specification | Value |
|---|---|
| Bearing code | SKF 6203 |
| Bearing type | Single-row deep groove ball bearing |
| Bore diameter (d) | 17 mm |
| Outside diameter (D) | 40 mm |
| Width (B) | 12 mm |
| Series | 6200 |
| Number of rows | 1 row |
| Basic construction | Inner ring, outer ring, steel balls, and cage |
SKF 6203 Bearing Variants
The SKF 6203 bearing is available in different configurations based on the type of shield, sealing, and internal clearance. The basic bearing code remains 6203, while the suffix indicates the specific configuration. Common variants include:
| Variant | Characteristics |
|---|---|
| SKF 6203 | Open bearing without shields or seals |
| SKF 6203-2Z | Two steel shields, one on each side of the bearing |
| SKF 6203-2RSH | Two contact rubber seals, one on each side of the bearing |
| SKF 6203/C3 | Increased internal clearance compared with the standard clearance |
| SKF 6203-2Z/C3 | Two steel shields combined with C3 internal clearance |
Note: When replacing an SKF 6203 bearing, check the complete bearing code rather than selecting the product based only on the 17 × 40 × 12 mm dimensions. Bearings with the same dimensions but different seals, shields, or internal clearances may be designed for different operating conditions.
What Machines Use SKF 6203 Bearings?
SKF 6203 bearings are commonly installed in rotating shaft assemblies where friction needs to be reduced between the shaft and housing. With a single-row deep groove ball bearing design, the product can be used in various machines and equipment with compatible mounting dimensions.
Common applications include:
- Electric motors: Installed at the shaft ends to support stable rotor rotation.
- Pumps: Used in rotating shaft assemblies, depending on the pump design and operating load.
- Industrial fans: Support rotating shafts in fans and motors.
- Conveyors and rollers: Used in certain roller, pulley, or transmission assemblies with compatible mounting dimensions.
- Machine tools: Can be installed in rotating shafts, transmission assemblies, and drive mechanisms.
- Industrial production equipment: Selected for rotating assemblies that meet the required dimensional, speed, and load conditions.
How to Choose the Right SKF 6203 Bearing
When selecting an SKF 6203 bearing, consider the bearing code, mounting dimensions, load, and operating environment rather than choosing based solely on the 6203 designation.
- Check the dimensions: The SKF 6203 bearing has basic dimensions of 17 × 40 × 12 mm. The bore diameter must match the shaft, the outside diameter must fit the housing, and the bearing width must be compatible with the available mounting space.
- Select the correct shield or seal: The 6203 is an open bearing; 6203-2Z uses two steel shields; and 6203-2RSH uses two rubber seals. The appropriate configuration should be selected according to the equipment design and required protection.
- Determine the internal clearance: For assemblies operating under specific temperature or operating conditions, a C3 clearance version may be required instead of standard clearance.
- Check load and speed: Consider the actual radial load, axial load, and shaft rotational speed to ensure that the bearing meets the operating requirements.
- Consider the operating environment: For equipment exposed to dust, moisture, or contaminants, pay particular attention to the bearing's seals or shields.
SKF 6203 Bearing Price and Supply Policy at Belota
The price of a genuine SKF 6203 bearing is not fixed for every product and may vary depending on the variant, order quantity, and stock availability at the time of purchase. Versions such as 6203, 6203-2Z, 6203-2RSH, and 6203/C3 have different configurations, so their prices may also differ.
When preparing a quotation, Belota will confirm the exact bearing code, required quantity, and stock status before providing pricing information. For bulk orders, customers can provide a list of bearing codes and quantities so that each product can be checked and quoted accordingly.
The following information can be confirmed when purchasing SKF 6203 bearings from Belota:
- Price: Quoted according to the exact bearing code and order quantity.
- Stock status: Available stock or estimated supply time if the product needs to be ordered.
- CO/CQ: Available according to the specific batch or order requirements, where applicable.
- Warranty: Applied according to the terms and conditions stated in the quotation or purchase agreement.
- Delivery: Delivery time is confirmed based on stock status, order quantity, and delivery location.
To receive an accurate quotation, customers should provide the complete SKF 6203 bearing code, required quantity, and documentation requirements. Belota will check the product information before providing the quotation and confirming the estimated delivery time.
Conclusion
Choosing an SKF 6203 bearing should not be based solely on its 17 × 40 × 12 mm dimensions. The complete product code, shield or seal configuration, internal clearance, and actual operating conditions should also be considered. When replacing or purchasing a new bearing, check the complete code and required quantity carefully to avoid selecting the wrong configuration. Belota can support customers in checking the bearing code, stock availability, and quotation for SKF 6203 bearings according to their specific requirements.
