Document Overview:
This technical document from THB Bearings Co., Ltd. provides detailed specifications and data for cylindrical roller thrust bearings, including dimensions, load ratings, speed ratings, and component designations.

1. Product Description

The document focuses on cylindrical roller thrust bearings, which are designed to support axial loads in rotating machinery. These bearings consist of a roller and cage thrust assembly, shaft washer, and housing washer.

2. Principal Dimensions and Parameters

Key dimensions provided for each bearing model include:

• d: Bore diameter (mm)
• D: Outside diameter (mm)
• H: Height or thickness (mm)
• Ea and Eb: Additional dimensional parameters related to bearing geometry (mm)

These dimensions are critical for ensuring proper fit and function in mechanical assemblies.

3. Load Ratings

The document specifies two types of load ratings for each bearing:

• Dynamic load rating (C): The maximum load the bearing can endure while rotating without fatigue (kN)
• Static load rating (C0): The maximum load the bearing can withstand without permanent deformation when stationary (kN)

Additionally, the fatigue load limit (Pu) is provided, indicating the load below which the bearing can theoretically operate indefinitely without fatigue failure.

4. Speed Ratings

Two speed parameters are listed for each bearing:

• Reference speed: The speed at which the bearing can operate under standard conditions (r/min)
• Limiting speed: The maximum permissible speed for the bearing under ideal lubrication and operating conditions (r/min)

5. Mass and Designation

Each bearing model includes the mass (kg) and designation codes for the roller and cage thrust assembly, shaft washer, and housing washer. These codes (e.g., 81102 TN K, 81102 TN WS, 81102 GS) identify specific components and variants within the product line.

6. Product Range and Variants

The document covers a wide range of bearing sizes, from small bore diameters (15 mm) up to large sizes exceeding 600 mm. Variants include different cage types and designations such as TN, K, WS, GS, and M, indicating variations in design or materials.

7. Summary of Critical Information

• Bearings are categorized primarily by bore diameter and corresponding dimensions.
• Load ratings (dynamic and static) increase with bearing size, reflecting capacity for heavier axial loads.
• Speed ratings decrease as bearing size increases, consistent with mechanical limitations.
• Mass values provide guidance for handling and integration into assemblies.
• Component designations facilitate ordering and identification of compatible parts.

8. Recommendations and Usage Notes

While explicit procedural or normative instructions are not detailed, the data implies the following best practices:

• Select bearings based on required load capacity and speed limits.
• Ensure dimensional compatibility with shaft and housing components.
• Consider fatigue load limits for long-term reliability.
• Use correct component designations to ensure proper assembly.

Contact Information:
THB Bearings Co., Ltd.
Tel: 86-21-5484 6072
Fax: 86-21-5484 6065
Website: www.thb-bearings.com