The MRC 108KSG is part of the traditional 100-KS single-row radial ball bearing series.

Its principal dimensions are:

40 × 68 × 15 mm

and the bearing is supplied in an open configuration, meaning there are no integral shields or contact seals on either side.

The deep-groove raceway geometry is designed primarily for radial load while also allowing moderate axial load in both directions, depending on speed, fit, lubrication, and operating conditions.

⚙️ Applications

• Electric motors
• Pumps
• Fans and blowers
• Gearboxes
• Industrial machinery
• Light conveyor systems
• Agricultural equipment
• Rollers
• Power-transmission equipment
• General rotating shafts

🎯 Benefits

✔ Compact 40 × 68 × 15 mm dimensions

✔ Single-row deep groove construction

✔ Open bearing design

✔ Low rolling friction

✔ Good radial-load capability

✔ Supports moderate axial load in both directions

✔ Suitable for externally lubricated machinery

✔ Useful for legacy MRC equipment and replacement applications

🧠 Technical Insight

• MRC 108KSG
• MRC 100-KS Series
• Single-Row Radial Ball Bearing
• Deep Groove Ball Bearing
• 40 mm Bore
• 68 mm Outside Diameter
• 15 mm Width
• Straight Bore
• Open Type

✅ Key Features

• MRC (SKF) Bearing
• Model 108KSG
• 100-KS Series
• Single-Row Deep Groove Ball Bearing
• 40 mm ID
• 68 mm OD
• 15 mm Width
• Open Construction

📊 Specifications

Brand: MRC (SKF)

Model / Bearing Number: 108KSG

Series: 100-KS Series

Product Type: Radial / Deep Groove Ball Bearing

Bearing Type: Single-Row Deep Groove Ball Bearing

Bore Type: Straight Bore

Bore Diameter (d): 40.00 mm

Outside Diameter (D): 68.00 mm

Width (B): 15.00 mm

Closure: Open

Seal / Shield: None

Rolling Elements: Ball

Number of Rows: 1

Primary Load: Radial

Axial Load Capability: Moderate axial load in both directions depending on operating conditions

Lubrication: Requires suitable lubrication from the machine or assembly because the bearing is open

Internal Clearance: Not specified in the supplied data

Cage: Not specified in the supplied data

Dynamic Load Rating: Not specified in the supplied data

Static Load Rating: Not specified in the supplied data

Speed Rating: Not specified in the supplied data

Shaft Fit: Nominal 40 mm shaft

Housing Fit: Nominal 68 mm bearing seat

🔁 Equivalent

Suitable dimensional cross-reference candidates should match:

• MRC 108KSG
• 40x68x15 Open Deep Groove Ball Bearing
• 40 mm Bore Radial Ball Bearing
• 68 mm OD Open Ball Bearing
• MRC 100-KS Series Bearing

Important Cross-Reference Consideration

A replacement should not be selected from dimensions alone.

Also verify:

• Open construction
• Internal clearance
• Cage design
• Lubrication method
• Precision class
• Speed requirement
• Load rating
• Shaft fit
• Housing fit

Because 108KSG is a manufacturer-specific MRC designation, the safest cross-reference is to match the exact 40 × 68 × 15 mm geometry together with the same open-bearing execution and operating requirements.

(Always verify the original MRC 108KSG marking and machine requirements before selecting a modern equivalent.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for electric motors, pumps, fans, gearboxes, conveyors, rollers, agricultural machinery, and general industrial equipment requiring an open deep groove ball bearing with 40 mm bore and 68 mm OD.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification