How It Works - Spline Theory
+Spline Design Calculator
Calculate torque capacity and stresses for involute and straight-sided splines per ANSI/ISO standards.
mm
Module = 1/P
mm - engagement length
N-m
Material
Typical: 150-250 MPa for fixed, 30-80 MPa for sliding
✓
Adequate Capacity
Stresses within allowable limits
Spline Analysis Results
Torque Capacity
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Bearing Stress
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Shear Stress (root)
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Effective Tooth Height
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Safety Factor (bearing)
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Major / Minor Diameter
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Enter spline parameters to calculate capacity.
Spline Dimensions
Module (m)
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Circular Pitch
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Tooth Thickness
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Space Width
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Standard Spline Series
| Series | Teeth | Application |
|---|---|---|
| Light Duty | 6-10 | Low torque, small diameters |
| Medium Duty | 10-20 | General purpose |
| Heavy Duty | 16-40 | High torque, large shafts |
| Extra Heavy | 30-60 | Maximum torque capacity |
Allowable Bearing Stress
| Application | Sb (MPa) |
|---|---|
| Fixed, hardened | 200-250 |
| Fixed, not hardened | 150-180 |
| Sliding, hardened | 50-80 |
| Sliding, not hardened | 30-50 |