The MRC (SKF) 5218KF Double Row Ball Bearing is designed for larger industrial shaft systems requiring greater rigidity, load capacity, and axial-location capability than a conventional single-row bearing of comparable shaft diameter.

The 5218 series is commonly associated with a double row angular contact ball bearing configuration. Two rows of balls are arranged within one integrated bearing, enabling the assembly to support substantial radial loading together with axial loading from both directions, depending on the exact internal geometry and bearing execution.

Nominal dimensions:

Bore Diameter: 90 mm

Outside Diameter: 160 mm

Bearing Width: approximately 52.4 mm

Approximate inch dimensions:

Bore: 3.543 in

Outside Diameter: 6.299 in

Width: 2.063 in

Because this bearing carries the complete designation 5218KF, the suffix KF should be retained during replacement and cross-reference work. A bearing labeled only 5218 may have the same basic dimensions but different internal construction, cage, clearance, preload, lubrication, or other operating characteristics.

Before selecting a replacement, verify:

• Complete MRC 5218KF designation
• Internal bearing geometry
• Contact-angle arrangement
• Internal clearance or preload
• Cage material and construction
• Seal or shield arrangement
• Lubrication method
• Shaft and housing fits
• Radial and axial load requirements
• Speed and operating temperature

⚙️ Applications

• Heavy industrial gearboxes
• Large electric motors
• Industrial pumps
• Machine-tool assemblies
• Mechanical transmissions
• Large conveyor drive systems
• Agricultural machinery
• Industrial drive equipment
• Heavy rotating machinery
• OEM industrial equipment

🎯 Benefits

✔ Double-row ball-bearing construction

✔ Supports combined radial and axial loading

✔ Can support axial loads in both directions

✔ Suitable for large 90 mm shaft assemblies

✔ Higher rigidity than many single-row bearing arrangements

✔ Compact integrated two-row construction

✔ Suitable for demanding industrial machinery

✔ Useful for maintenance and heavy overhaul work

✔ Cross-reference assistance available

🧠 Technical Insight

• MRC (SKF) 5218 Bearing Series
• Double Row Ball Bearing
• Commonly Double Row Angular Contact Configuration
• 90 mm Bore Diameter
• 160 mm Outside Diameter
• Approximately 52.4 mm Width
• Designed for Combined Radial / Axial Loads
• KF Execution Must Be Verified Before Replacement

✅ Key Features

• MRC (SKF) Bearing
• 5218KF Reference
• Double Row Construction
• Large Metric Bearing Dimensions
• High-Capacity Bearing Arrangement
• Heavy Industrial Shaft Application
• OEM Replacement Candidate
• Cross-Reference Support Available

📊 Specifications

Brand: MRC (SKF)

Model / Bearing Number: 5218KF

Bearing Series: 5218

Bearing Type: Double Row Ball Bearing

Typical Bearing Arrangement: Double Row Angular Contact Type; verify exact MRC 5218KF execution

Bore Diameter (d): 90 mm

Outside Diameter (D): 160 mm

Width (B): Approximately 52.4 mm

Inch Equivalent: Approximately 3.543 × 6.299 × 2.063 in

Rolling Elements: Ball

Number of Rows: 2

Load Capability: Combined radial and axial load capability; exact ratings depend on the manufacturer-specific KF execution

Axial Load Direction: Typically capable of supporting axial load in both directions in a double-row angular-contact arrangement

Seal / Shield: Verify actual MRC 5218KF construction

Cage: KF is manufacturer-specific; verify actual cage construction and material from MRC specification

Internal Clearance / Preload: Verify manufacturer specification

Lubrication: Verify whether the bearing is open, externally lubricated, factory-lubricated, or incorporates another lubrication arrangement

Speed Rating: Depends on internal geometry, cage, lubrication, load, fit, operating temperature, and actual MRC execution

Temperature Range: Depends on lubricant, cage material, closure configuration if any, and operating conditions

Shaft Fit: Select according to shaft rotation, load direction, bearing load level, and manufacturer recommendations

Housing Fit: Select according to loading, housing material, temperature, and operating conditions

Standard: Metric 5218-Series Double Row Bearing

🔁 Equivalent

Suitable replacement or cross-reference candidate for compatible:

• MRC 5218KF
• MRC 5218 Double Row Bearing
• SKF-Compatible 5218 Series Bearing
• 90x160x52.4 mm Double Row Ball Bearing
• 5218 Double Row Angular Contact Bearing
• 90 mm Bore Double Row Bearing
• Large Industrial 5218 Bearing
• Double Row Radial / Axial Ball Bearing
• OEM 5218-Series Replacement Bearing
• Heavy Industrial Double Row Ball Bearing

A bearing with the same 90 × 160 × 52.4 mm dimensions is not automatically interchangeable. The replacement should also match the original contact-angle arrangement, internal clearance or preload, cage, lubrication, sealing/shielding, shoulder dimensions, load ratings, speed capability, shaft fit, housing fit, and operating environment.

The KF suffix must be preserved and checked during cross-reference work because it may identify a manufacturer-specific execution that cannot be determined from the basic 5218 number alone.

(Always verify the complete MRC 5218KF designation and manufacturer specification before ordering a substitute.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for heavy industrial gearboxes, large motors, pumps, transmissions, machine tools, conveyor drives, agricultural machinery, heavy rotating equipment, and compatible OEM bearing applications.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification