Technical Specification Summary for Standard 7 Series 72B287 Internal Gear

1. Overview:
This document provides detailed dimensional and technical specifications for the Standard 7 Series 72B287 internal gear components. It includes measurements, weights, and structural parameters essential for manufacturing and quality control.

2. Key Parameters and Dimensions:
- Weight (kg): Two variants listed with weights 336 kg and 390 kg.
- Outer Diameter (mm): Outer ring diameters are 1345 mm and 1470 mm respectively.
- Diameter Measurements (mm): Multiple diameter values are provided for outer ring, inner ring, bolt circles, and hole diameters, critical for fitting and assembly.
- Bore and Hole Details: Includes external and internal hole diameters, number of bolt holes, and bolt circle diameters for both outer and inner rings.
- Thread Depth and Ring Heights (mm): Thread depth and thickness of outer and inner rings are specified to ensure proper mechanical engagement.
- Module and Number of Teeth: The module is 10, with 108 and 120 teeth for the two variants respectively.

3. Structural Features:
- The document lists axial and radial dimensions such as bearing axis diameter and bolt hole axis diameters.
- Thickness and height of rings are detailed to maintain structural integrity.

4. Usage and Application Notes:
- These specifications are critical for gear manufacturing, ensuring compatibility with mating components.
- Precise adherence to dimensions ensures performance and longevity in mechanical systems.

5. Summary Table Highlights:
- Two main gear sizes with detailed dimensional data.
- Comprehensive coverage of diameters, hole sizes, and counts.
- Weight and module values indicating gear robustness and tooth sizing.

Critical Information:
- Ensure all diameter and hole measurements are verified during production.
- Maintain module and tooth count as specified for proper gear meshing.
- Follow thread depth and ring thickness parameters to avoid mechanical failure.

This summary captures the essential technical data for the Standard 7 Series 72B287 internal gear, facilitating manufacturing, inspection, and application in mechanical assemblies.