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DIN 2093 / EN 16983 disc springs are conical load-bearing components engineered to absorb heavy axial loads in restricted spatial envelopes. Compressive force flattens the geometry, providing high restoring forces either individually, stacked in parallel for multiplied load capacity, or arranged in series for extended deflection.
Series A:
Outer diameter (OD) greater than 50 mm, machined or fine-blanked, manufactured with defined contact bearing faces.
Series B:
30 mm <= OD <= 50 mm, fine-blanked, bearing faces optional relative to material thickness.
Series C:
Outer diameter below 30 mm, fine-blanked without bearing faces, stamped directly from precision strip stock.
Stacking Configurations:
Single spring, parallel stacking (identical orientation), and series stacking (alternating orientation).
High energy storage capacity within minimal axial space.
Linear or progressive load-deflection characteristics dictated by the thickness-to-height ratio (h0/t).
Inherent resistance to catastrophic structural failure; progressive crack propagation preserves residual load capacity prior to replacement.
Predictable force output under dynamic cyclic loading within defined stress limits.
Spring Steels: C67S (1.1223) and C75S (1.1248) for general mechanical applications up to 100 degrees Celsius.
Alloy Steels: 51CrV4 (1.8159) for high dynamic load conditions and operating temperatures up to 250 degrees Celsius.
Corrosion-Resistant Alloys: X10CrNi18-8 (1.4310) and X7CrNiAl17-7 (1.4568 / 17-7PH) for chemical and marine environments.
High-Temperature Alloys: Nimonic 90 and Inconel 718 for thermal environments exceeding 400 degrees Celsius.
Surface Treatments: Zinc flake coatings providing over 720 hours of salt spray resistance without hydrogen embrittlement risk; phosphating and oiled finishes; passivated stainless steel.
Pre-loading of large-diameter bearing assemblies to eliminate axial play and reduce vibrational wear.
Clamping mechanisms in CNC machine tool spindles and automated tool change cylinders.
Safety relief valves and heavy-duty butterfly valve actuators requiring rapid, high-force actuation.
Thermal expansion compensation in high-temperature pipeline flanges and industrial heat exchangers.
Raw Material Verification: Incoming spectrometer chemical composition checks and eddy current testing for internal subsurface defects.
Forming Methods: Precision cold stamping for small dimensions (Series C); hot or cold forming paired with fine-blanking for heavy-duty Series A.
Heat Treatment:
Controlled atmosphere austempering lines establishing uniform martensitic microstructures and target hardness levels (42 to 52 HRC).
Shot Peening:
Centrifugal wheel and air-blast peening applied to compressive surfaces to introduce residual compressive stress layers, increasing fatigue life by up to 300 percent.
Load Testing:
100 percent full-load static testing on automated sorting equipment to verify deflection forces at 0.25h0, 0.5h0, and 0.75h0 in accordance with DIN 2093 tolerances.
Non-standard dimensions engineered for legacy equipment retrofit or unique spatial constraints.
Laser-etched part numbers, tracking batch codes, or client logos on larger spring components.
Specialized alloy procurement backed by full mill test certificates (EN 10204 3.1 / 3.2).
Custom load-testing protocols and batch-specific test reports supplied with shipments.
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