Home / Physical Specifications / Bend Radius Calculator

Bend Radius Calculator

Calculate optimal bend radius for motorcycle keys based on material properties and ISO standards with support for stress analysis and safety factor optimization for reliable key performance.

±0.1 Precision (mm)
ISO Standards
2.5x Safety Factor

Calculate Bend Radius

Enter your specifications to determine optimal bend radius

Thickness directly affects minimum bend radius
Width of the key blade
Total angle of the bend

Calculation Results

Optimal bend radius specifications

Example Results (Brass, 2.2mm thick, 90° bend)
Minimum Bend Radius: 5.5 mm
Recommended Radius: 13.8 mm
Maximum Stress: 45.2 MPa
Safety Status: Safe

How It Works

Our calculator uses material properties and stress analysis to determine the minimum safe bend radius, considering yield strength, elastic modulus, and safety factors for reliable key performance.

  • Material-specific calculations
  • Stress distribution analysis
  • Safety factor optimization
  • ISO compliance verification

Stress Analysis

Comprehensive stress analysis considering bending moments, material properties, and geometric factors to ensure keys can withstand operational loads without failure.

  • Bending stress calculations
  • Yield strength comparison
  • Fatigue life assessment
  • Load condition analysis

Safety Optimization

Multiple safety factor options from minimum to critical applications, ensuring appropriate margins for different use cases and reliability requirements.

  • Adjustable safety factors
  • Application-specific margins
  • Reliability optimization
  • Failure prevention

Step-by-Step Tutorial

Learn how to use the bend radius calculator for safe key design

1

Select Key Material

Choose the material for your key as different materials have varying mechanical properties that significantly affect the minimum bend radius requirements.

2

Enter Key Dimensions

Input the key thickness and width. Thickness is the most critical dimension as it directly affects the bending stress and minimum radius requirements.

3

Specify Bend Angle

Enter the total angle through which the key will be bent. Larger angles may require larger radii to maintain the same stress levels.

4

Choose Loading Condition

Select the type of loading the key will experience. Dynamic and cyclic loading require higher safety margins than static loading.

5

Set Safety Factor

Choose an appropriate safety factor based on the criticality of the application and required reliability level for your specific use case.

Frequently Asked Questions

Common questions about bend radius and key design specifications

What is bend radius in key manufacturing?

Bend radius is the minimum radius a key can be bent without causing permanent deformation or failure. It depends on material properties, thickness, and intended use.

How do I calculate the minimum bend radius?

Minimum bend radius is calculated using material properties (yield strength, elastic modulus), key thickness, and safety factors. The formula considers stress distribution during bending.

Why is bend radius important for motorcycle keys?

Proper bend radius ensures keys can withstand normal use forces without breaking, maintain structural integrity, and provide reliable operation throughout their service life.

What factors affect bend radius requirements?

Key factors include material type, thickness, hardness, operating temperature, loading conditions, and required safety margins for the specific application.

Related Calculators

Explore other physical specification calculators for comprehensive key analysis