Spherical Roller Bearings

• Design and Configuration: These bearings are designed to accommodate misalignment due to mounting errors or shaft deflection. They are available in various designs and materials tailored to specific applications and sizes.
• Load Capacity: Capable of handling both radial and axial loads, with the axial load (Fa) not exceeding 0.6 times the radial load (Fr) for high axial load scenarios.
• Special Applications: For oscillating loads or high-speed applications, consultation with NACHI engineers is advised for optimal design solutions.
• Light Load Conditions: Bearings should experience a load greater than 0.02 Cr to avoid damage from sliding motion.
• Heat Stabilization: These bearings are heat-stabilized for use at temperatures up to 200°C, ensuring minimal dimensional changes.

Lubrication and Misalignment

• Lubrication: Outer rings may have lubrication holes and grooves, with configurations varying based on fitting and service conditions.
• Misalignment: The maximum permissible misalignment angle is approximately 2° under general conditions, subject to variation with different series and service conditions.

Mounting Bearings with Tapered Bore

• Interference Fit: Requires skilled technique, with radial internal clearance reduction measurement being more reliable than axial displacement measurement.
• Clearance Considerations: Adequate radial internal clearance post-mounting is crucial, especially with temperature differences between inner and outer rings.

Tolerance Values

• Inner and Outer Ring Tolerances: Detailed tolerance values are provided for various classes and diameter series to ensure precision in bearing dimensions.

Overview: This document serves as a technical catalog for spherical roller thrust bearings, detailing specifications, dimensions, load ratings, and contact information for NACHI-FUJIKOSHI's global offices.
Specifications: The catalog includes various bearing models with dimensions, load ratings, and speed limits, highlighting key parameters such as bore diameter, dynamic and static load ratings, and limiting speeds for grease and oil lubrication.
Procedures: It outlines the calculation of dynamic and static equivalent axial loads using specific formulas, emphasizing the importance of maintaining a Fr/Fa ratio of 0.55.
Recommendations: For heavy load applications, it is advised that the bore diameter (da) be sufficiently large to support the shaft washer rib.
Contact Information: Contact details for NACHI-FUJIKOSHI's head offices in Japan and its overseas sales and manufacturing companies across America, Europe, Asia, and Oceania are provided.