The MRC (SKF) 38FSF2 is a special ball bearing from the MRC product family. Its most important characteristic when identifying a modern replacement is the unusual dimensional combination:

Bore Diameter: 8 mm

Outside Diameter: approximately 24 mm

Width: 7 mm

This gives an approximate metric size of:

8 × 24 × 7 mm

The dimensions make the bearing look very similar to the widely available 608 deep groove ball bearing, but there is an important difference:

MRC 38FSF2: approximately 8 × 24 × 7 mm

SKF 608: 8 × 22 × 7 mm

Therefore:

• Bore diameter is the same at 8 mm
• Width is the same at 7 mm
• MRC 38FSF2 OD is approximately 24 mm
• Standard 608 OD is 22 mm
• The OD difference is approximately 2 mm

That difference is significant because the bearing outer ring interfaces directly with the housing bore. Installing a 22 mm OD bearing into a housing originally designed for approximately 24 mm OD will normally create excessive radial clearance and will not provide the required housing fit.

For a correct replacement, the outside diameter must therefore receive special attention.

⚙️ Applications

• Special industrial machinery
• Compact electric motors
• Small mechanical drives
• Precision rotating assemblies
• Legacy OEM machinery
• Machine-tool mechanisms
• Small pumps
• Fans and auxiliary drives
• Custom shaft assemblies
• Obsolete-equipment restoration

🎯 Benefits

✔ Special 8 × 24 × 7 mm dimensional configuration

✔ Compact 8 mm shaft bore

✔ Thin 7 mm bearing width

✔ Special 24 mm OD for original housing compatibility

✔ Low-friction ball-bearing construction

✔ Suitable for legacy MRC machinery

✔ Helps preserve original shaft and housing geometry

✔ Prevents incorrect substitution with standard 608 bearings

✔ Cross-reference assistance available

🧠 Technical Insight

• MRC (SKF) 38FSF2 Special Bearing
• Approximate Size 8 × 24 × 7 mm
• 8 mm Bore
• 24 mm Outside Diameter
• 7 mm Width
• Similar to 608 in Bore and Width
• Standard 608 OD Is Only 22 mm
• OD Difference Is Critical for Correct Replacement

✅ Key Features

• MRC (SKF) Special Bearing
• Reference 38FSF2
• Special-Dimension Ball Bearing
• 8 mm Shaft Bore
• Approximately 24 mm OD
• 7 mm Width
• Legacy / OEM Bearing Application
• Cross-Reference Support Available

📊 Specifications

Brand: MRC (SKF)

Model / Bearing Number: 38FSF2

Basic Reference: 38

Suffix / Execution: FSF2

Bearing Type: Special Industrial Ball Bearing

Nominal Bore Diameter (d): 8 mm

Nominal Outside Diameter (D): Approximately 24 mm

Nominal Width (B): 7 mm

Nominal Dimensions: Approximately 8 × 24 × 7 mm

Approx. Inch Equivalent: 0.315 × 0.945 × 0.276 in

Rolling Element: Ball

Number of Rows: Verify actual MRC 38FSF2 construction

Raceway Type: Verify original MRC specification

Seal / Shield: FSF2 is an MRC-specific execution; verify actual bearing construction

Internal Clearance: Verify original MRC specification

Cage: Verify actual MRC 38FSF2 construction

Lubrication: Verify original factory lubrication and closure arrangement

Load Capability: Depends on actual internal bearing geometry

Speed Rating: Depends on internal design, closure arrangement, lubrication, clearance, load, and fit

Shaft Fit: Nominal 8 mm shaft; confirm shaft tolerance

Housing Fit: Approximately 24 mm housing bore; this dimension is particularly important

Installation Consideration: Do not substitute a 22 mm OD bearing directly into a 24 mm housing without a properly engineered adapter or housing modification

Standard: Manufacturer-Specific MRC Special Bearing

🔁 Equivalent

Suitable replacement or cross-reference candidates must be checked against:

• MRC 38FSF2
• 8x24x7 mm Special Ball Bearing
• 8 mm Bore Special Bearing
• 24 mm OD Ball Bearing
• 7 mm Wide Ball Bearing
• MRC Special-Dimension Bearing
• Legacy MRC Ball Bearing
• OEM Special Bearing
• Obsolete MRC Bearing
• Custom 8x24x7 Bearing

Important comparison with SKF 608

A common SKF 608 bearing is approximately:

8 × 22 × 7 mm

Typical examples include:

• SKF 608
• SKF 608-2Z
• SKF 608-2RSH

These bearings share the 8 mm bore and 7 mm width with the dimensional reference for MRC 38FSF2, but the 22 mm outside diameter is smaller than the approximately 24 mm OD of the MRC bearing.

Therefore, a 608 bearing is not a direct dimensional replacement for MRC 38FSF2.

The comparison is:

If a machine originally uses a 24 mm housing bore, installing a standard 608 bearing with a 22 mm OD would require an appropriately engineered sleeve, adapter, or housing modification. Such a modification must preserve concentricity, fit, radial support, and alignment.

The safest replacement strategy is therefore to locate an 8 × 24 × 7 mm bearing with construction equivalent to the original 38FSF2, rather than selecting a 608 solely because the bore and width match.

(Always measure the original bearing ID × OD × Width and verify the complete FSF2 construction before ordering a replacement.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for special machinery, compact motors, precision shaft assemblies, custom OEM equipment, machine tools, auxiliary drives, and legacy equipment originally designed for the MRC 38FSF2 bearing.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification