The MRC 124KSFF is an extra-light-series deep groove ball bearing designed primarily for radial load while also supporting moderate axial load in both directions.

Its principal dimensions are:

120 × 180 × 28 mm

which correspond to the standard modern:

6024

The bearing uses a conventional single-row, non-filling-slot / Conrad-type deep groove construction.

The FF execution protects the bearing on both sides and is typically associated with metal shielding in this MRC product family. This arrangement helps retain grease while reducing the entry of larger contaminants and maintaining relatively low running friction.

⚙️ Applications

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

🎯 Benefits

✔ Standard 120 × 180 × 28 mm dimensions

✔ MRC 100-KS Extra Light Series

✔ Single-row deep groove construction

✔ Double-side protected design

✔ Good radial-load capability

✔ Moderate axial-load capability in both directions

✔ Lower friction than typical contact-sealed bearings

✔ Good grease retention

✔ Suitable for relatively high-speed applications when operating conditions permit

✔ Modern 6024-series replacements are available

🧠 Technical Insight

• MRC 124KSFF
• MRC 100-KS Extra Light Series
• Deep Groove Ball Bearing
• 120 mm Bore
• 180 mm Outside Diameter
• 28 mm Width
• Single-Row Radial Bearing
• Non-Filling-Slot / Conrad Type
• FF Double-Side Protected Execution
• Modern Dimensional Reference: 6024

✅ Key Features

• MRC (SKF) Bearing
• Model 124KSFF
• 100-KS Extra Light Series
• Single-Row Deep Groove Ball Bearing
• 120 mm Bore
• 180 mm OD
• 28 mm Width
• Double-Shielded-Type Configuration

📊 Specifications

Brand: MRC (SKF)

Model / Bearing Number: 124KSFF

Series: MRC 100-KS Extra Light Series

Modern Dimensional Reference: 6024

Product Type: Deep Groove Ball Bearing

Bearing Type: Single-Row Radial Ball Bearing

Construction: Non-Filling-Slot / Conrad-Type

Bore Diameter (d): 120.00 mm

Outside Diameter (D): 180.00 mm

Width (B): 28.00 mm

Rolling Elements: Ball

Number of Rows: 1

Closure: Protected on both sides

FF Suffix: Typically associated with double metal shields in this MRC family; verify the physical bearing if closure construction is critical

Primary Load: Radial

Axial Load Capability: Moderate axial load in both directions depending on load, speed, fit, and lubrication

Lubrication: Normally grease-retaining protected-bearing configuration

Internal Clearance: Not defined by the basic 124KSFF designation; verify Normal, C3, or another clearance if required

Cage: Verify original MRC / production specification

Dynamic Load Rating: Verify original MRC or corresponding modern manufacturer data

Static Load Rating: Verify original MRC or corresponding modern manufacturer data

Speed Rating: Depends on shield construction, lubricant, clearance, fits, temperature, and operating load

Shaft Fit: Nominal 120 mm shaft

Housing Fit: Nominal 180 mm bearing seat

🔁 Equivalent

Suitable dimensional replacement or cross-reference candidates include:

• MRC 124KSFF
• SKF 6024-2Z
• FAG 6024-2Z
• NSK 6024ZZ
• NTN 6024ZZ
• KOYO 6024ZZ
• NACHI 6024ZZ
• 120x180x28 Double-Shielded Deep Groove Ball Bearing

MRC 124KSFF → Modern 6024 Family

The dimensional relationship is:

MRC 124KSFF = 120 × 180 × 28 mm

which corresponds to:

6024

If the original FF configuration is confirmed as double metal shielded, the most relevant modern cross-reference family is:

6024-2Z / 6024ZZ

depending on manufacturer terminology.

6024-2Z vs 6024-2RS

Both may share the same basic dimensions:

120 × 180 × 28 mm

but the closure design is different.

6024-2Z / ZZ

• Metal shields on both sides
• Lower friction
• Good grease retention
• Better suited to higher-speed applications in many cases
• Helps protect against larger dust and debris

6024-2RS / Sealed Type

• Rubber seals on both sides
• Better exclusion of fine dust and moisture
• Higher friction
• Usually lower allowable speed than an equivalent shielded bearing

Therefore, a sealed 6024 variant should not automatically replace 124KSFF solely because the dimensions match.

Important Cross-Reference Consideration

Before replacing MRC 124KSFF, verify:

• Bore = 120 mm
• OD = 180 mm
• Width = 28 mm
• Shield / seal arrangement
• Internal clearance
• Cage design
• Lubrication
• Precision class
• Load ratings
• Speed requirement
• Shaft fit
• Housing fit

Dimensions alone do not guarantee complete interchangeability.

(Always verify the full marking and execution of the original MRC 124KSFF before selecting SKF 6024-2Z, FAG 6024-2Z, NTN 6024ZZ, NSK 6024ZZ, or another replacement.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for large electric motors, pumps, fans, gearboxes, conveyors, rollers, processing machinery, and general industrial equipment requiring a 120x180x28 mm double-shielded 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