NSK 1205C3 – Self-Aligning Ball Bearing (Double Row)

Country of Origin: Japan
Also known as: 1205J30
EAN: 00029176409189

Specifications

• Brand: NSK
• Country of Origin: Japan
• Item Number: 1205C3
• Also Known As: 1205J30
• EAN: 00029176409189
• Category: Self-Aligning Ball Bearing – Double Row

Dimensions & Weight

Product Properties

• Bore: C – Cylindrical
• Seal: None (Open bearing)
• Cage Type: S – Steel cage (standard)
• Radial Internal Clearance: C3 (greater than CN, for higher speed & heat capability)
• Precision: Standard precision
• Lubrication: Standard grease/oil
• Heat Stabilization: Not heat-stabilized – suitable up to 120 °C

Suffix Description

• C3: Larger-than-normal internal radial clearance, ideal for:
• Thermal expansion
• Higher speeds
• Applications with tight fits

Product Description

The NSK 1205C3 is a double-row self-aligning ball bearing, designed to compensate for misalignment between the shaft and housing.

Self-Aligning Properties

• The outer ring has a spherical raceway
• Both rows of balls can adjust automatically
• Misalignment does not create excess stress
• Ideal for applications with shaft deflection or mounting inaccuracies

Performance Characteristics

• Lowest friction among all rolling-element bearings
• Very low heat generation, even at high speeds
• Handles high radial loads
• Can also support light axial loads in both directions

Typical Applications

• Agricultural machinery
• Conveyor systems
• Fans and blowers
• Textile equipment
• Electric motors with shaft deflection
• Industrial machinery with misalignment risks