The MRC (SKF) 204SFF is a standard-size deep groove ball bearing in the MRC 200-S Light Series.

Its internal design is non-filling-slot, meaning there are no ball-loading slots cut into the raceways. This allows the bearing to support radial load efficiently while also accommodating moderate axial loads in both directions.

Nominal dimensions:

Bore Diameter: 20.000 mm

Outside Diameter: 47.000 mm

Width: 14.000 mm

Approximate inch dimensions:

0.7874 × 1.8504 × 0.5512 in

The FF suffix denotes a protected double-shielded execution. Metal shields on both sides help retain grease and reduce entry of coarse dust and foreign particles without creating the friction associated with contact rubber seals.

This makes the bearing well suited to:

• Electric motors
• Pumps
• Fans
• Gearboxes
• Conveyors
• General rotating machinery

⚙️ Applications

• Electric motors
• Industrial pumps
• Fans and blowers
• Gearboxes
• Conveyor systems
• Machine tools
• Mechanical transmissions
• Agricultural machinery
• Automotive auxiliary equipment
• General industrial machinery

🎯 Benefits

✔ Standard 20 × 47 × 14 mm dimensions

✔ Single-row deep groove construction

✔ Non-filling-slot internal design

✔ Double metal shields

✔ Good radial-load capacity

✔ Moderate axial-load capability in both directions

✔ Low-friction operation

✔ Suitable for relatively high rotational speed

✔ Cross-reference support available

🧠 Technical Insight

• MRC 204SFF Bearing Reference
• 200-S Light Series
• Single-Row Deep Groove Radial Ball Bearing
• Non-Filling-Slot Construction
• 20 mm Bore
• 47 mm Outside Diameter
• 14 mm Width
• Double Metal Shields

✅ Key Features

• MRC (SKF) Industrial Bearing
• Model 204SFF
• 200-S Light Series
• Single-Row Deep Groove Design
• Double-Shielded FF Execution
• 20x47x14 mm Dimensions
• High-Speed Capability
• Cross-Reference Support Available

📊 Specifications

Brand: MRC (SKF)

Model / Bearing Number: 204SFF

Bearing Series: 200-S Light Series

Bearing Type: Single-Row Deep Groove Radial Ball Bearing

Internal Design: Non-Filling Slot

Bore Diameter (d): 20.000 mm

Outside Diameter (D): 47.000 mm

Width (B): 14.000 mm

Approx. Inch Equivalent: 0.7874 × 1.8504 × 0.5512 in

Rolling Elements: Ball

Number of Rows: 1

Raceway Type: Deep Groove

Closure Type: Double Metal Shields

Suffix FF: Double-shielded execution

Modern Shielded Reference: Commonly cross-referenced to SZZ / ZZ / 2Z style execution depending on manufacturer terminology

Basic Dynamic Radial Load Rating (C): approximately 12,800 N / 12.8 kN

Basic Static Radial Load Rating (C₀): approximately 6,650 N / 6.65 kN

Load Capability: Primarily radial load with moderate axial-load capability in both directions

Axial Load Direction: Both directions, within bearing/application limits

Contamination Protection: Metal shields help reduce entry of coarse dust and debris

Lubrication Retention: Double shields help retain grease inside the bearing

Lubrication: Typically grease-lubricated shielded configuration

Internal Clearance: Verify original MRC specification

Cage: Verify actual MRC 204SFF construction

Speed Rating: Suitable for relatively high-speed service; exact allowable speed depends on lubrication, clearance, cage, load, fit, and temperature

Temperature Range: Depends on grease, cage, clearance, fit, speed, and operating environment

Shaft Fit: Nominal 20 mm shaft; verify shaft tolerance

Housing Fit: Nominal 47 mm housing bore; verify housing tolerance and shoulder geometry

Installation Consideration: Confirm shield condition, internal clearance, lubrication, shaft/housing fit, alignment, and operating speed before installation

Modern Dimensional Reference: 6204-series bearing envelope

🔁 Equivalent

Suitable replacement or cross-reference candidates include:

• MRC 204SFF
• SKF 6204-2Z
• SKF 6204ZZ market designation
• NSK 6204ZZ
• NTN 6204ZZ
• KOYO 6204ZZ
• FAG 6204-2Z
• 20x47x14 mm Double-Shielded Ball Bearing
• 20 mm Bore Deep Groove Bearing
• Industrial 6204-2Z Replacement Bearing

Cross-Reference Comparison

The dimensional match is:

20 × 47 × 14 mm

which makes modern 6204-2Z / 6204ZZ products strong cross-reference candidates.

However, a direct replacement should still be checked for:

• Internal clearance
• Cage
• Grease
• Precision class
• Dynamic/static load ratings
• Speed rating
• Shield geometry
• Shaft fit
• Housing fit
• Operating temperature

A 6204-2RS bearing has the same dimensions but uses contact seals instead of metal shields, so friction and maximum speed can differ from the original 204SFF.

(Always verify the original MRC 204SFF specification before selecting a modern 6204-series replacement.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for motors, pumps, fans, gearboxes, conveyors, machine tools, mechanical drives, agricultural machinery, and industrial equipment requiring a 20 × 47 × 14 mm double-shielded bearing.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification