SKF 6203 17x40x12 mm

SKF 6203 17x40x12 mm - Single-Row Deep Groove Ball Bearing

SKF 6203 is a single-row deep groove ball bearing manufactured by SKF, with dimensions of 17x40x12 mm. It belongs to the 62 dimensional series and features an open design without factory-installed metal shields or elastomer seals. The standard SKF 6203 execution has Normal radial internal clearance, CN, a cylindrical bore and one row of balls. It primarily accommodates radial loads and permissible axial loads in both directions.

Technical Specifications - SKF 6203

These identification specifications refer to the standard SKF 6203 execution. Detailed operating parameters, including dynamic and static load ratings, limiting speeds, mass and cage design, should be confirmed against current SKF documentation for the exact bearing variant.

What Does SKF 6203 Mean?

The designation 6203 identifies the bearing type, dimensional series and bore diameter.

SKF - Bearing manufacturer.

6 - Single-row deep groove ball bearing.

62 - Bearing dimensional series.

03 - Bore code corresponding to a nominal bore diameter of 17 mm.

The absence of a 2Z, 2RS1 or 2RSH suffix indicates the standard open bearing execution.

The absence of a C3 or C4 suffix indicates Normal radial internal clearance, CN.

The complete product designation is:

SKF 6203

SKF 6203 Dimensions

The principal mounting dimensions are:

• Bore diameter d: 17 mm.

• Outside diameter D: 40 mm.

• Width B: 12 mm.

Bearing dimensions: 17x40x12 mm.

The 17 mm bore corresponds to the nominal shaft diameter.

The 40 mm outside diameter determines the nominal housing bore size.

The 12 mm width must be considered when designing and installing the axial location of the bearing.

Dimensions of 17x40x12 mm are shared by several variants of the 6203 series. Identical dimensions therefore do not automatically establish complete mechanical or operational interchangeability.

Construction of SKF 6203

SKF 6203 is a non-separable, single-row deep groove ball bearing.

Its principal components include:

• Inner ring with a deep groove raceway.

• Outer ring with a deep groove raceway.

• One row of balls.

• Cage maintaining the spacing between the rolling elements.

The deep groove raceway geometry enables the bearing to accommodate radial loads and specified axial loads in both directions.

The single-row construction provides a compact arrangement for rotating mechanical assemblies.

The bearing is non-separable, meaning that its rings and rolling elements form an assembled unit.

Open Bearing Design - Characteristics

The standard SKF 6203 execution does not have factory-installed shields or seals.

The open construction allows lubricant to reach the rolling elements and raceways directly.

Depending on the machine design, the bearing arrangement may use:

• Oil lubrication.

• Grease lubrication.

• Lubrication supplied by an external system.

• Periodic relubrication.

The absence of integral seals means that protection against dust, moisture and other contaminants must be considered.

An open bearing is not equivalent to a sealed, factory-greased bearing.

Normal Radial Internal Clearance - CN

The standard SKF 6203 execution has Normal radial internal clearance, CN.

Radial internal clearance describes the relative radial displacement possible between the bearing rings before mounting, under specified measurement conditions.

The principal clearance classes are:

After mounting, internal clearance can change because of interference fits and temperature differences between the bearing rings.

The appropriate clearance class must therefore be selected according to the mounting arrangement and operating conditions.

C3 is not automatically superior to the standard CN execution.

Radial and Axial Load Accommodation

SKF 6203 is primarily designed to accommodate radial loads.

Its deep groove raceway geometry also enables it to support permissible axial loads in both directions.

Correct bearing selection requires consideration of:

• Radial load magnitude.

• Axial load magnitude.

• Direction of applied forces.

• Rotational speed.

• Lubrication conditions.

• Operating temperature.

• Shaft and housing fits.

• Required calculated bearing life.

A standard deep groove ball bearing is not designed to compensate for substantial angular misalignment between the shaft and housing.

SKF 6203 vs Other Bearing Variants

SKF 6203 vs SKF 6203/C3

Both executions have dimensions of 17x40x12 mm and an open design.

They differ in radial internal clearance.

SKF 6203 - Normal radial internal clearance, CN.

SKF 6203/C3 - Radial internal clearance greater than Normal.

These variants should not be interchanged without checking mounting fits and thermal operating conditions.

SKF 6203 vs SKF 6203-2Z

Both variants have identical principal dimensions.

SKF 6203 - Open bearing.

SKF 6203-2Z - Bearing with two non-contact metal shields.

The shields help limit contamination and retain grease inside the bearing.

These differences affect lubrication arrangements and protection of the internal bearing components.

SKF 6203 vs SKF 6203-2RS1

Both executions have dimensions of 17x40x12 mm.

SKF 6203 - Open bearing.

SKF 6203-2RS1 - Bearing with two contact seals.

The sealed execution provides different protection against contamination but also introduces additional friction associated with the contact seals.

SKF 6203 vs SKF 6203-2Z/C3

SKF 6203-2Z/C3 features two metal shields and C3 radial internal clearance.

The standard SKF 6203 execution is open and has Normal radial internal clearance.

Identical principal dimensions do not mean that the variants are interchangeable without evaluating the operating conditions.

Alternative Designations and Search References

Common commercial identification variants include:

• SKF 6203

• 6203 SKF

• SKF 6203 17x40x12

• SKF 6203 ball bearing

• SKF 6203 deep groove ball bearing

• SKF 6203 single-row bearing

The manufacturer's basic designation remains:

SKF 6203

Suffixes such as C3, 2Z or 2RS should not be added unless they are present in the actual product designation.

Bearing Selection and Interchangeability

Before purchasing or replacing the bearing, verify:

• Complete manufacturer designation.

• Dimensions 17x40x12 mm.

• Open bearing construction.

• Normal radial internal clearance, CN.

• Required dynamic and static load ratings.

• Permissible rotational speed.

• Lubrication conditions.

• Shaft and housing fits.

• Operating temperature.

• Required bearing service life.

Bearings from different manufacturers with identical dimensions do not necessarily have identical technical characteristics.

Typical Applications of 6203 Series Bearings

Open single-row deep groove ball bearings can be used in rotating assemblies where suitable lubrication and bearing protection are provided.

Typical applications of this bearing design include:

• Industrial machinery shafts.

• Gearbox assemblies.

• Power transmission systems.

• Electric motors with suitable bearing requirements.

• Rotating mechanical systems.

• Production equipment.

These are general applications associated with the bearing design, not confirmed original equipment applications for this specific SKF product number.

Mounting and Operation

Before installation, clean the shaft and housing seating surfaces.

Inspect the mounting surfaces and verify the required fits and alignment.

Mounting force must be applied directly to the ring being installed with an interference fit.

Force must not be transmitted through the balls and raceways.

Because SKF 6203 is an open bearing, suitable lubrication and protection against contamination must be provided.

The lubricant type, lubricant quantity and maintenance intervals should be selected according to the operating conditions of the equipment.

Store the bearing in its original packaging in a clean, dry environment.

FAQ

What are the dimensions of SKF 6203?

SKF 6203 measures 17x40x12 mm. The bore diameter is 17 mm, the outside diameter is 40 mm and the width is 12 mm.

Is SKF 6203 an open bearing?

Yes. The standard SKF 6203 execution does not have factory-installed shields or seals.

What radial internal clearance does SKF 6203 have?

The standard SKF 6203 execution has Normal radial internal clearance, CN.

What is the difference between SKF 6203 and SKF 6203/C3?

Both have identical dimensions and an open design. The C3 version has greater radial internal clearance than the standard CN execution.

Does SKF 6203 require lubrication?

Yes. As an open bearing, it requires suitable lubrication within the machine assembly.

Can SKF 6203-2Z replace SKF 6203?

Not automatically. The 2Z execution has two metal shields, while SKF 6203 is open. Substitution requires verification of lubrication and operating conditions.

Can SKF 6203 accommodate axial loads?

Yes. Its deep groove ball bearing construction enables it to accommodate permissible axial loads in both directions.

Do SKF 6203 and SKF 6203-2RS1 have the same dimensions?

Yes. Both variants measure 17x40x12 mm, but they differ in sealing configuration.

SKF 6203 - Key Information

SKF 6203 is a single-row deep groove ball bearing measuring 17x40x12 mm. The standard execution has an open design without factory-installed shields or seals and features Normal radial internal clearance, CN. It accommodates radial loads and permissible axial loads in both directions. Suitable lubrication and protection against contamination must be provided within the machine assembly.

SKF 6203 series bearings are offered by the specialist industrial bearing supplier simmering.pl. Stock in Poland, worldwide shipping and technical assistance with identifying the correct bearing execution.