Machine Design calculators

• Bolt Pre-selection Alpha · 2026-06-18 — Preliminary bolt sizing based on the Kübler equation
• Bolt Joint — Preselection & Verification Alpha · 2026-06-22 — Kübler-equation preselection plus a simplified VDI 2230 Blatt 1 verification
• VDI 2230-1 Single-bolt Joint Calculation v0.1 Beta · 2026-10-06 — VDI 2230 Blatt 1:2015 — Systematic single bolt joint calculation, with optional eccentric clamping/loading
• VDI 2230-2 Multi-bolt Joint Calculation (Rigid-body Method) v0.1 Beta · 2026-10-06 — VDI 2230 Part 2:2014-12, §6.3 rigid-body mechanics — split loads across a bolt array, flag the candidate critical bolts

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