Overview

This document provides detailed technical specifications for a standard range of motor springs, including torque ratings, material dimensions, and spring end types. It serves as a reference for selecting appropriate springs based on load and dimensional requirements.

Specifications Table

The core of the document is a comprehensive tabular dataset listing various motor springs characterized by the following parameters:

• Torque (NM): Torque rating with a tolerance of ±10%
• Material I/D*: Internal diameter reference, subject to variation to meet load specifications
• Dimensions (mm): D1, D2, D3, D4, C, W, T*, L - key dimensional parameters defining spring geometry
• Spring Ends: Denoted by letters (A, C, D, E, F, K) indicating the type of spring end configuration
• Spring Number: Unique identifier for each spring model (e.g., SR79, SR80, etc.)

Two main torque and dimension tables are presented, each covering a range of spring sizes and torque capacities from approximately 0.03 NM to over 10 NM.

Key Parameters and Ranges

• Torque Range: From 0.03 NM up to 10.10 NM, with corresponding kilogram-centimeter values provided.
• Dimensions: Diameters (D1 to D4) range from approximately 5.5 mm to over 170 mm, lengths (L) vary from around 7.9 mm to 99 mm.
• Spring Ends: Multiple end types are specified, including E, D, A, C, F, and K, each likely corresponding to different mounting or connection methods.

Fatigue Life and Usage Recommendations

The document specifies average fatigue life expectations for the springs under working conditions:

• 5,000 cycles correspond to approximately 27 working turns
• 20,000 cycles correspond to approximately 20 working turns

This information is critical for understanding the durability and expected lifespan of the springs in operational environments.

Dimensional Drawings and Notes

Additional schematic details include diameter references, hole sizes, radii, and angular measurements relevant to spring installation and compatibility. These include:

• Hole diameters (e.g., 5.55 mm, 6.35 mm)
• Radius measurements (e.g., R15.88 mm, R9.52 mm)
• Angular specifications (e.g., 45°)

These details support precise mechanical integration of the springs into motor assemblies.

Critical Notes

• All dimensions and torque values are reference only and may be varied to meet specific load requirements.
• Spring end types are standardized and must be selected according to motor design needs.
• Fatigue life data should guide maintenance schedules and replacement intervals.

Summary

This technical document is a detailed catalog of motor springs, providing essential data for engineers to select springs based on torque, size, and end configuration. It emphasizes the importance of matching spring specifications to load requirements and highlights fatigue life considerations for reliable motor performance.