The MRC (SKF) 5106SBZZ is a special automotive bearing commonly used in A/C compressor clutch and pulley assemblies.

Unlike a conventional single-row deep groove bearing, this model uses a double row angular contact ball bearing arrangement. The two-row construction provides greater rigidity and allows the bearing to carry:

• Radial load generated by belt tension
• Axial load generated by clutch and pulley operation
• Combined radial and axial loading
• High-speed rotational loads
• Repeated cycling during compressor engagement and disengagement

The bearing dimensions are:

Inside Diameter (d): 30 mm

Outside Diameter (D): 55 mm

Width (B): 23 mm

Approximate inch dimensions:

Bore: 1.181 in

OD: 2.165 in

Width: 0.906 in

This 30 × 55 × 23 mm dimensional format is widely associated with automotive air-conditioning compressor clutch bearings and has several recognized cross-reference numbers from other major bearing manufacturers.

⚙️ Applications

• Automotive A/C compressor clutch
• Air-conditioning compressor pulley
• Compressor electromagnetic clutch assembly
• Passenger-car A/C systems
• Light-commercial vehicle A/C systems
• Automotive accessory drives
• Compressor pulley assemblies
• Belt-driven compressor systems
• Vehicle climate-control systems
• Automotive repair and overhaul

🎯 Benefits

✔ Specifically suited to A/C compressor clutch applications

✔ Double row angular contact construction

✔ Supports combined radial and axial loads

✔ Suitable for high-speed pulley rotation

✔ Compact 30 × 55 × 23 mm dimensions

✔ Increased rigidity compared with many single-row bearings

✔ Protected closure helps retain lubricant

✔ Helps reduce dust and contamination ingress

✔ Multiple recognized cross-reference options available

🧠 Technical Insight

• MRC (SKF) 5106SBZZ Bearing Reference
• Double Row Angular Contact Ball Bearing
• Automotive A/C Compressor Clutch Bearing
• 30 mm Bore
• 55 mm Outside Diameter
• 23 mm Width
• High-Speed Combined-Load Application
• Double-Protected / Shielded Execution

✅ Key Features

• MRC (SKF) Automotive Bearing
• Model 5106SBZZ
• Double Row Angular Contact Design
• Compressor Clutch / Pulley Application
• 30x55x23 mm Dimensions
• Combined Radial / Axial Load Capability
• High-Speed Rotational Application
• Cross-Reference Support Available

📊 Specifications

Brand: MRC (SKF)

Model / Bearing Number: 5106SBZZ

Bearing Type: Double Row Angular Contact Ball Bearing

Primary Application: Automotive A/C Compressor Clutch / Pulley Bearing

Bore Diameter (d): 30 mm

Outside Diameter (D): 55 mm

Width (B): 23 mm

Approx. Inch Equivalent: 1.181 × 2.165 × 0.906 in

Rolling Elements: Ball

Number of Rows: 2

Contact Type: Angular Contact

Load Capability: Combined radial and axial loads

Axial Load Direction: Both directions, according to double-row angular-contact arrangement

High-Speed Capability: Suitable for high-speed compressor-pulley service, subject to manufacturer and operating limits

Closure Type: Double-protected / double-shielded execution; exact closure material should be confirmed from the actual bearing specification

Suffix ZZ: Commonly indicates double shields

Lubrication: Pre-lubricated / grease-retaining protected configuration; verify actual supplier specification

Operating Environment: Automotive compressor pulley area with belt load, vibration, heat, and contamination exposure

Shaft Fit: Nominal 30 mm

Housing / Pulley Fit: Nominal 55 mm

Installation Consideration: Confirm pulley bore, clutch assembly dimensions, press-fit condition, bearing orientation, and axial seating before installation

Standard: Automotive A/C Compressor Clutch Bearing / Manufacturer-Specific MRC 5106 Series

🔁 Equivalent

Suitable replacement or cross-reference candidates include:

• MRC 5106SBZZ
• SKF 5106-WCC
• NSK 30BD40DF2
• NSK 30BD40DF1
• NTN NB5106WCC
• NTN DF0617LLUC2/4E
• NACHI 30BG05S5DS
• NACHI 30BG05S5G
• 30x55x23 mm A/C Compressor Clutch Bearing
• Double Row A/C Compressor Bearing

These cross-reference numbers are intended for the same general 30 × 55 × 23 mm compressor-clutch bearing class, but replacement should still be confirmed against:

• Exact bearing dimensions
• Internal contact geometry
• Closure / seal type
• Internal clearance
• Lubrication
• Speed capability
• Load rating
• Compressor / clutch manufacturer
• Pulley and housing fit

A bearing with the same dimensions but a different internal design should not automatically be treated as equivalent.

(Always verify the original compressor clutch bearing number and actual dimensions before ordering a replacement.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for automotive air-conditioning compressor clutches, compressor pulleys, electromagnetic clutch assemblies, belt-driven compressor systems, and vehicle A/C repair applications using a 30 × 55 × 23 mm bearing.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification