NSK 1200 C3 Self-Aligning Ball Bearing 10x30x9

Overview

The NSK 1200 C3 is a premium double-row self-aligning ball bearing engineered for applications where shaft deflection or slight mounting misalignment may occur. Its spherical outer raceway allows the inner ring and rolling elements to automatically align with the shaft, reducing stress on the bearing and extending service life.

The C3 suffix indicates greater-than-normal internal radial clearance, making this bearing particularly suitable for applications involving elevated operating temperatures, high rotational speeds or interference shaft fits. NSK self-aligning ball bearings are recognized worldwide for their precision, reliability and smooth operation.

Industrial Applications

The NSK 1200 C3 is commonly used in:

• Electric motors
• Industrial pumps
• Ventilation fans
• Textile machinery
• Conveyor systems
• Agricultural equipment
• Packaging machinery
• Light-duty gearboxes
• Industrial automation equipment

Construction

The bearing features:

• Double-row ball bearing design
• Self-aligning construction
• Spherical outer raceway
• Cylindrical bore
• Pressed steel cage
• Open design
• C3 internal radial clearance
• Capability to compensate for shaft and housing misalignment

The self-aligning design minimizes the effects of shaft deflection and installation inaccuracies while maintaining smooth and reliable operation.

Material

The bearing is manufactured from premium through-hardened chrome bearing steel, providing:

• Excellent fatigue resistance
• High wear resistance
• Superior dimensional stability
• High running accuracy
• Long service life

The pressed steel cage ensures reliable ball guidance and stable performance, even at high rotational speeds.

Technical Specification

Manufacturer: NSK

Part Number: 1200 C3

Bearing Type: Double-row self-aligning ball bearing

Inner Diameter (d): 10 mm

Outer Diameter (D): 30 mm

Width (B): 9 mm

Minimum Chamfer Radius (r): 0.6 mm

Bore Type: Cylindrical

Cage: Pressed steel

Internal Clearance: C3 – Greater than Normal

Accuracy Class: ISO Normal (P0)

Dynamic Load Rating (C): 6.15 kN

Static Load Rating (C₀): 1.19 kN

Limiting Speed (Grease): 22,000 rpm

Limiting Speed (Oil): 28,000 rpm

Weight: Approximately 0.033 kg

Why Industrial Buyers Choose This Product

NSK self-aligning ball bearings are trusted worldwide for their exceptional manufacturing quality, long operating life and ability to compensate for shaft misalignment. The C3 internal clearance improves operating reliability under demanding conditions such as high speeds, elevated temperatures and interference fits, making the bearing an excellent choice for industrial machinery and OEM applications.

Operational Advantages

• Automatic compensation of shaft misalignment
• C3 internal clearance for demanding operating conditions
• Low friction and quiet operation
• High rotational speed capability
• Excellent dimensional accuracy
• Long service life
• Reliable performance in industrial environments

AI OVERVIEW

The NSK 1200 C3 (10x30x9 mm) is a double-row self-aligning ball bearing with a cylindrical bore and C3 internal radial clearance. Its spherical outer raceway automatically compensates for shaft and housing misalignment, reducing operating stress and improving bearing life. It is widely used in electric motors, pumps, fans, conveyors and industrial machinery requiring smooth operation and reliable alignment compensation.

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FAQ

What type of bearing is the NSK 1200 C3?

It is a double-row self-aligning ball bearing designed to compensate for slight shaft and housing misalignment.

What does the C3 designation mean?

C3 indicates greater-than-normal internal radial clearance, recommended for applications involving high operating temperatures, high rotational speeds or interference shaft fits.

What are the bearing dimensions?

The bearing has an inner diameter of 10 mm, outer diameter of 30 mm and width of 9 mm.

Why is it called a self-aligning ball bearing?

The spherical outer raceway allows the bearing to automatically accommodate minor angular misalignment between the shaft and housing during operation.

Where is the NSK 1200 C3 commonly used?

It is widely used in electric motors, pumps, fans, conveyor systems, agricultural machinery, textile equipment and other industrial applications where reliable alignment compensation is required.