Engineering lab · Interactive tool
Pin + Clevis Joint Calculator
Screen single- or double-shear pin joints for average pin shear, projected bearing stress, and governing material margin.
Pin + clevis joint / average shear and bearing
Live calculationτ = F / (nA); σᵦ = F / (td)Pin-joint results updated. Pin average shear 63.66 megapascals. Minimum allowable / stress 2.
Model, assumptions, and a reproducible reference case
τ = F/(nπd²/4); σ_bearing = F/(td)
Reference inputs
10 kN load; 10 mm pin; double shear; lug thickness 8 mm; total ear thickness 12 mm; pin shear allowable 300 MPa; bearing allowables 250 MPa.
- Expected loaded-lug bearing stress
- 125.00 MPa
- Calculated by this tool
- 125.00 MPa
The minimum allowable/stress ratio is 2.0. Any required safety factors must already be reflected in the entered allowables; pin bending, lug tear-out, fatigue, and clearance are separate checks.
Check the material basis, load cases, and applicable design criteria before using a result. Warning thresholds are prompts for review, not acceptance criteria.
A pin joint carries more than average shear
This model is a fast load-path screen for the pin, central lug, and clevis ears. It helps identify the element that deserves the next geometry or allowable iteration.
Detailed design must add pin bending, net-section and shear-out failure, edge distance, clearance, eccentricity, fatigue, wear, retention, and local contact behavior.
Before releasing the joint
- Check pin bending and combined stress
- Verify lug net section, shear-out, and edge distance
- Resolve load sharing between clevis ears
- Evaluate fatigue, wear, lubrication, and clearance growth
- Define retention, assembly, inspection, and service strategy
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