The MRC 220MF is a heavy-duty maximum-capacity ball bearing designed primarily for applications requiring high radial-load capability.

Its mounting dimensions are:

100 × 180 × 34 mm

which correspond dimensionally to the modern 6220 bearing envelope.

However, the internal geometry differs significantly from a conventional 6220.

The MRC 220M family uses:

Maximum Capacity / Filling-Slot Construction

The filling slots allow additional balls to be assembled between the inner and outer raceways. This increased ball complement provides greater radial load capacity.

The trade-off is reduced axial-load capability compared with a standard Conrad-type deep groove bearing.

The additional F suffix means that an exact replacement should preserve or correctly cross-reference this special MRC execution.

⚙️ Applications

• Heavy-duty electric motors
• Industrial gearboxes
• Large pumps
• Fans and blowers
• Conveyor drives
• Industrial rollers
• Material-handling equipment
• Processing machinery
• Agricultural machinery
• Power-transmission equipment
• Machinery with high radial-load requirements

🎯 Benefits

✔ Maximum-capacity construction for high radial loads

✔ 100 × 180 × 34 mm mounting envelope

✔ Filling-slot design permits a larger ball complement

✔ Higher radial-load capability than conventional deep groove designs of similar size

✔ Suitable for heavy industrial rotating machinery

✔ Legacy MRC 200-M Series execution

✔ Special F suffix retained for accurate cross-reference

✔ Modern maximum-capacity cross-reference families available

🧠 Technical Insight

• MRC 220MF
• MRC SKF 220MF
• MRC 220M Family
• MRC 200-M Series
• Maximum Capacity Ball Bearing
• Filling Slot / Filling Notch
• Bore 100 mm
• OD 180 mm
• Width 34 mm
• 6220 Dimensional Envelope
• F = MRC-specific execution requiring verification
• Higher radial capability than standard Conrad-type bearing
• Reduced axial capability compared with standard deep groove construction

✅ Key Features

• MRC (SKF) Bearing
• Model 220MF
• MRC 200-M Series
• Maximum-Capacity Construction
• Single-Row Radial Ball Bearing
• Filling-Slot Design
• 100 mm Bore
• 180 mm OD
• 34 mm Width
• Special MRC F Execution

📊 Specifications

Brand: MRC (SKF)

Model / Bearing Number: 220MF

Base Bearing: MRC 220M

Series: MRC 200-M Series

Dimensional Reference: 6220 envelope

Product Type: Maximum Capacity Deep Groove Ball Bearing

Bearing Type: Single-Row Radial Ball Bearing with Filling Slots

Construction: Maximum Capacity / Filling Slot

Bore Diameter (d): 100.00 mm

Outside Diameter (D): 180.00 mm

Width (B): 34.00 mm

Rolling Elements: Ball

Number of Rows: 1

Primary Load: High radial load

Axial Load Capability: More restricted than conventional non-filling-slot deep groove bearings

M Designation: Maximum-capacity / filling-slot construction

F Suffix: MRC-specific execution; exact meaning should be verified

Closure: Not confirmed from the supplied 220MF designation

Seal / Shield: Do not infer from suffix F alone

Dynamic Load Rating: Verify the exact original MRC 220MF specification

Static Load Rating: Verify the exact original MRC 220MF specification

Speed Rating: Depends on exact F execution, lubrication, internal clearance, fits, temperature, and load

Lubrication: Verify the original MRC execution and machine lubrication arrangement

Internal Clearance: Not confirmed from the basic 220MF designation

Cage: Verify original MRC production specification

Shaft Fit: Nominal 100 mm shaft

Housing Fit: Nominal 180 mm bearing seat

🔁 Equivalent

Suitable cross-reference search candidates include:

• MRC 220MF
• MRC 220M
• NTN BL220 family
• NSK BL220 family
• Maximum Capacity 220 Ball Bearing
• 100x180x34 Filling-Slot Ball Bearing
• Max-Type 100x180x34 Radial Ball Bearing
• 6220 — dimensional reference only

Important: MRC 220MF Is Not Automatically a Standard 6220

Both may share:

100 × 180 × 34 mm

but their internal construction is different.

MRC 220MF

• Maximum-capacity design
• Filling slots
• Larger ball complement
• Higher radial-load capability
• More restricted axial-load capability
• Special F execution

Standard 6220

• Conventional Conrad-type deep groove design
• No filling slots
• Standard ball complement
• More balanced radial + moderate axial-load capability

Therefore:

MRC 220MF ≠ Standard 6220

even though the external dimensions match.

Why the Filling Slot Matters

The filling-slot construction enables more balls to be installed inside the bearing.

This provides:

✔ More rolling elements sharing the load
✔ Increased radial-load capacity
✔ Better suitability for heavily loaded rotating equipment

However, the filling slots interrupt part of the raceway shoulders.

As a result:

• Axial-load capability is reduced
• Heavy continuous thrust loading should be avoided
• Pure thrust applications are unsuitable
• Replacement bearings should retain maximum-capacity characteristics when the original machine depends on them

220MF vs 220M

The base bearing family is closely related, but the complete part number should be respected.

MRC 220M

• Maximum-capacity / filling-slot bearing
• Base M-series execution

MRC 220MF

• Same 220M maximum-capacity family
• Additional F execution
• Exact meaning of F requires confirmation

Therefore, 220M should not automatically replace 220MF unless the F requirement is known to be irrelevant or matched by the replacement.

Important: Preserve the “F” Suffix

When sourcing, always search using:

MRC 220MF

rather than reducing the designation to:

220M

or:

6220

Do not automatically interpret F as:

• Single shield
• Felt seal
• Rubber seal
• Special grease
• Cage type
• Internal clearance
• Precision class

without an original MRC source supporting that definition.

MRC 220MF vs NTN / NSK BL220

NTN BL220 and NSK BL220 are useful maximum-capacity / filling-slot cross-reference families because they retain the same general high-radial-capacity concept.

However, exact interchangeability requires confirmation of:

• Dimensions
• F execution
• Closure
• Internal clearance
• Cage
• Load ratings
• Speed ratings
• Raceway geometry
• Shoulder geometry
• Fillet radius
• Lubrication
• Precision

Important Cross-Reference Consideration

Before replacing MRC 220MF, verify:

• Bore = 100 mm
• OD = 180 mm
• Width = 34 mm
• Maximum-capacity / filling-slot construction
• Exact F suffix requirement
• Open / shielded / sealed configuration
• Internal clearance
• Cage
• Load ratings
• Lubrication
• Precision class
• Operating speed
• Radial load
• Axial load
• Shaft fit
• Housing fit
• Shoulder and fillet geometry

(Always verify the original MRC 220MF execution before selecting MRC 220M, NTN BL220, NSK BL220, standard 6220, or another replacement. Matching dimensions alone do not guarantee interchangeability.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for heavy-duty electric motors, industrial gearboxes, large pumps, conveyor drives, rollers, processing machinery, power-transmission equipment, and applications requiring a 100x180x34 mm maximum-capacity filling-slot ball bearing.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification