The MRC 210SFFG is a single-row deep groove ball bearing designed primarily for radial loading while also supporting moderate axial loads in both directions.

Its dimensional envelope is:

50 × 90 × 20 mm

which corresponds dimensionally to the modern:

6210

The bearing uses a conventional:

Non-Filling-Slot / Conrad-Type Deep Groove Construction

This differs from the MRC 210M maximum-capacity family, which uses filling slots and a larger ball complement.

The FF execution helps retain grease and reduce the entry of dust and larger contaminants. The additional G suffix indicates a special MRC execution that should be preserved during cross-reference.

⚙️ Applications

• Electric motors
• Industrial pumps
• Fans and blowers
• Gearboxes
• Conveyor systems
• Industrial rollers
• Agricultural machinery
• Processing equipment
• Power-transmission systems
• General rotating machinery

🎯 Benefits

✔ Standard 50 × 90 × 20 mm mounting envelope

✔ Single-row deep groove construction

✔ Non-filling-slot design

✔ Good radial-load capability

✔ Supports moderate axial load in both directions

✔ Protected on both sides

✔ Good grease retention

✔ Relatively low friction compared with contact rubber seals

✔ Modern 6210-series dimensional cross-reference options available

🧠 Technical Insight

• MRC 210SFFG
• MRC 210S
• MRC 200-S Series
• Deep Groove Ball Bearing
• 50 mm Bore
• 90 mm Outside Diameter
• 20 mm Width
• Non-Filling-Slot / Conrad Type
• FF Double-Side Protected
• Modern Dimensional Reference: 6210
• G = MRC-specific execution

✅ Key Features

• MRC (SKF) Bearing
• Model 210SFFG
• 200-S Series
• Single-Row Deep Groove Ball Bearing
• 50 mm Bore
• 90 mm OD
• 20 mm Width
• Double-Side Protected Configuration
• Special MRC G Execution

📊 Specifications

Brand: MRC (SKF)

Model / Bearing Number: 210SFFG

Base Bearing: MRC 210S

Series: MRC 200-S Series

Modern Dimensional Reference: 6210

Product Type: Deep Groove Ball Bearing

Bearing Type: Single-Row Radial Ball Bearing

Construction: Non-Filling-Slot / Conrad-Type

Bore Diameter (d): 50.00 mm

Outside Diameter (D): 90.00 mm

Width (B): 20.00 mm

Rolling Elements: Ball

Number of Rows: 1

Primary Load: Radial

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

Closure: Protected on both sides

FF Suffix: Typically associated with double-side shielding / protection in this MRC family; verify actual bearing construction if critical

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

Lubrication: Typically grease-retaining protected-bearing configuration

Internal Clearance: Not confirmed from the basic 210SFFG designation

Cage: Verify original MRC production specification

Dynamic Load Rating: Verify original MRC or exact modern replacement data

Static Load Rating: Verify original MRC or exact modern replacement data

Speed Rating: Depends on shield construction, grease, clearance, shaft/housing fits, temperature, and load

Shaft Fit: Nominal 50 mm shaft

Housing Fit: Nominal 90 mm bearing seat

🔁 Equivalent

Suitable dimensional replacement or cross-reference candidates include:

• MRC 210SFFG
• MRC 210SFF
• SKF 6210-2Z
• FAG 6210-2Z
• NSK 6210ZZ
• NTN 6210ZZ
• KOYO 6210ZZ
• NACHI 6210ZZ
• 50x90x20 Double-Shielded Deep Groove Ball Bearing

MRC 210SFFG → Modern 6210 Family

The dimensional relationship is:

MRC 210SFFG = 50 × 90 × 20 mm

which corresponds to:

6210

If the original FF execution is confirmed as double metal shielded, the closest modern constructional family is:

6210-2Z / 6210ZZ

depending on manufacturer terminology.

However, because the complete designation includes:

G

a standard 6210-2Z should be treated as a cross-reference candidate, not automatically an exact replacement.

210SFFG vs 210M

These should not be confused.

MRC 210SFFG

• Standard S-series deep groove construction
• Non-filling-slot
• Better-balanced radial + moderate axial capability
• Double-side protected execution

MRC 210M

• Maximum-capacity construction
• Filling slots
• Larger ball complement
• Higher radial capacity
• More limited axial capability

Therefore:

210SFFG ≠ 210M

even though both may use the same 50 × 90 × 20 mm mounting envelope.

6210-2Z vs 6210-2RS

Both commonly use:

50 × 90 × 20 mm

but closure design differs.

6210-2Z / ZZ

• Metal shields on both sides
• Lower friction
• Good grease retention
• Generally better suited to higher speed
• Helps exclude larger dust and debris

6210-2RS / 2RSH / 2RS1

• Rubber seals on both sides
• Better fine-dust and moisture protection
• Higher friction
• Usually lower permissible speed

Therefore, a sealed 6210-2RS should not automatically replace MRC 210SFFG solely because the dimensions match.

Important: Preserve the “G” Suffix

The final:

G

should remain part of the sourcing and cross-reference process.

Do not automatically interpret it as:

• Grease code
• C3 clearance
• Special cage
• Precision class
• Shield material
• Seal type
• Noise class

without an original MRC source confirming that meaning for this exact execution.

Important Cross-Reference Consideration

Before replacing MRC 210SFFG, verify:

• Bore = 50 mm
• OD = 90 mm
• Width = 20 mm
• Exact FF closure construction
• Meaning of suffix G
• Internal clearance
• Cage
• Grease specification
• Precision class
• Operating speed
• Radial load
• Axial load
• Shaft fit
• Housing fit

(Always verify the full MRC 210SFFG designation and physical bearing before selecting SKF 6210-2Z, FAG 6210-2Z, NTN 6210ZZ, NSK 6210ZZ, or another replacement.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for electric motors, pumps, fans, gearboxes, conveyors, rollers, agricultural machinery, processing equipment, and general industrial machinery requiring a 50x90x20 mm protected deep groove 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