NACHI 1202 Self-Aligning Ball Bearing

NACHI 1202 Self-Aligning Ball Bearing

The NACHI 1202 is a self-aligning ball bearing with two rows of balls running on a common spherical raceway in the outer ring. With a bore diameter of 15 mm, outer diameter of 35 mm, and a width of 11 mm, this bearing conforms to ISO dimension standards and is a direct interchange for equivalent self-aligning ball bearings from other manufacturers.

Design & Construction

Manufactured by NACHI – one of Japan’s leading bearing producers – the 1202 is precision-ground from high-carbon chromium bearing steel (AISI 52100 / JIS SUJ2), heat-treated to achieve optimum hardness and fatigue resistance. The self-aligning design features a concave outer ring raceway that allows the inner ring, ball complement, and cage to tilt freely relative to the outer ring, compensating for shaft deflection, misalignment of up to 2-3 degrees, and mounting errors without increasing friction or reducing bearing life. The standard cylindrical bore provides a secure press-fit connection to the shaft, suitable for most conventional mounting arrangements.

Performance

Rated for a basic dynamic load capacity of 7.5 kN and a static load capacity of 1.8 kN, this bearing delivers reliable performance under moderate radial and light axial loads. Permissible speeds reach 18,000 rpm with grease lubrication and 22,000 rpm with oil lubrication. The open design allows free oil and grease flow for optimum lubrication and heat dissipation, making this bearing suitable for applications with external lubrication systems, oil bath, or periodic re-greasing.

Typical Applications

• Conveyor and material-handling systems where shaft deflection occurs
• Agricultural and farming equipment subject to rough operating conditions
• Textile and paper mill machinery with long, flexible shafts
• Fans, blowers, and ventilation equipment
• Light-duty gearboxes and transmission assemblies
• Pumps and compressors with potential shaft misalignment
• Woodworking and sawmill equipment
• Food and beverage processing machinery
• Printing and packaging equipment
• General industrial and workshop machinery