Technical Specification Sheet — NSK 6902ZZC3 (61902-2Z/C3)

Identification

• Brand: NSK
• Item Number / Part No.: 6902ZZC3
• Also known as: 61902-2Z/C3
• EAN: Not available (as provided)
• Product ID: 10111934
• Category: Deep Groove Ball Bearing — Single Row
• Country of Origin: Japan
• Customs Tariff Number (HS): 8482 1010

Dimensions & Weight

Metric

• Bore (d): 15 mm
• Outside Diameter (D): 28 mm
• Width (B): 7 mm
• Weight: 0.016 kg

Inch

• Bore (d): 0.5906 in
• Outside Diameter (D): 1.1024 in
• Width (B): 0.2756 in

Design / Construction

• Type: Deep groove ball bearing, single row
• Material: Standard bearing steel (rings & rolling elements)
• Bore: Cylindrical bore
• Seal / Shielding: ZZ / 2Z — Steel shields on both sides
• Cage: Sheet steel / standard steel cage (S)
• Outer Ring: Without flange / groove (as provided)
• Current Insulation: No
• External Modification: None

Internal Clearance / Precision / Temperature

• Radial Internal Clearance: C3 (higher than CN; slightly increased radial clearance)
• Tolerance Class: P0 / PN2 / ABEC 1 (Standard precision)
• Heat Stabilization: No (up to 120 °C)
• Operating Temperature Range: -20 °C to +120 °C

Lubrication / Treatment

• Lubrication: Standard lubrication
• Special Treatment: None

Suffix Meaning

• ZZ: Two metallic shields
• C3: Internal clearance larger than normal