This document provides detailed technical specifications for a series of external gears, identified by model numbers such as E.0505.1B20.01.01 through E.1048.1B20.01.01 and beyond. The data is organized in a tabular format listing critical dimensional and mechanical parameters for each gear model.

1. Gear Identification and Weight

Each gear is identified by a unique code (e.g., E.0505.1B20.01.01) and associated with a weight value in kilograms, ranging from 31 kg to 77 kg and higher for larger models.

2. Dimensional Specifications

The table includes multiple diameter measurements for both the outer and inner rings of the gears, such as:

• Outer ring outer diameter
• Outer ring inner diameter
• Inner ring outer diameter
• Inner ring inner diameter
• Ball track diameter
• External and internal hole diameters

These diameters are given in millimeters and are critical for fitting and assembly.

3. Thread and Bolt Hole Details

Thread depth and bolt hole information are specified, including:

• Thread depth (in mm)
• Number of bolt holes on outer and inner rings
• Bolt hole diameters and bolt circle diameters for both rings

These parameters ensure proper mounting and mechanical stability.

4. Ring Thickness and Overall Height

Thickness measurements for both outer and inner rings are provided, along with the total overall height of the gear assembly. These dimensions are essential for mechanical design and integration.

5. Module and Number of Teeth

The module (a gear parameter related to tooth size) and the number of teeth are listed, which define the gear's mechanical engagement and performance characteristics.

6. Keyway Depth

The depth of the keyway (used for torque transmission) is included, ensuring compatibility with shafts and other components.

Summary of Critical Parameters

Note: The module is consistently 8 across the models, and the number of teeth is 20, indicating a standardized tooth profile for this gear series.

Recommendations and Usage Notes

• Ensure compatibility of bolt hole patterns and thread depths with mating components during assembly.
• Verify dimensional tolerances for precise fitting, especially for inner and outer ring diameters.
• Consider the weight and overall height for mechanical design constraints and load calculations.
• Use the keyway depth information to select appropriate shafts and keys for torque transmission.

This structured data supports engineers and designers in selecting and integrating these external gears into mechanical systems, ensuring proper fit, function, and performance.