Filame Launches Online Compression Spring Tolerance Calculator Based on EN 15800
Discover Filame's new EN 15800 spring tolerance calculator: compute normative load, diameter, and squareness tolerances for Grades 1, 2, and 3.
To assist mechanical design bureaus, R&D engineers, and procurement teams, the Filame Group has launched a dedicated engineering resource: the EN 15800 Compression Spring Tolerance Calculator & Technical Guide.
The Engineering Challenge: Balancing Function and Production Cost
When designing a compression spring, engineers frequently face a dilemma: specifying overly tight tolerances on all dimensions and loads risks manufacturing bottlenecks. Under Clause 6.7 of EN 15800, spring physical characteristics are tightly interdependent.
Constraining both free length and test loads with Grade 1 limits removes the coiler’s ability to adjust during cold coiling, driving up scrap rates and manufacturing prices.
An Interactive Tool for Accurate Specifications
With Filame’s new online calculator, engineers can:
- Compare all 3 quality grades in real time: Grade 1 (fine, $Q = 0.63$), Grade 2 (industrial standard, $Q = 1.00$), and Grade 3 (coarse, $Q = 1.60$).
- Calculate exact load tolerances ($F_1, F_2$) based on the polynomial relations of Annex A.
- Determine geometric tolerances ($D_e, D_i, D, L_0$) and ground end deviations (squareness $e_1$, parallelism $e_2$).
- Print or copy technical summaries for immediate inclusion in drawing packages or requests for quotation.
This tool pairs directly with our 3D DIN EN 13906 Spring Configurator to provide a complete online design and industrialization suite.