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Jiangsu Sunzo Spring Elasticity Technology Co., Ltd
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{"title":"High-Precision DIN 2093 Compliant Disc Spring Stack with Adjustable Force Output","imgUrl":"https:\/\/img.chinax.com\/nimg\/a9\/b4\/8be82fcb8a177adeab0afe51e56c-200x200-1\/high_precision_din_2093_compliant_disc_spring_stack_with_adjustable_force_output_for_extreme_temperature_applications.jpg","attrs":{"Total Deflection":"Adjustable via stacking configuration","Dimensional Accuracy":"Strict DIN 2093","Force Output":"Adjustable via stacking configuration","Stacking Configurations":"Series, Parallel, Progressive\/Combination"}}
{"title":"Non-magnetic Stainless Steel Disc Spring Stack Maintains 95% Clamping Tension","imgUrl":"https:\/\/img.chinax.com\/nimg\/d3\/54\/83305d9116a28f1d15bbe12a45cf-200x200-1\/non_magnetic_stainless_steel_disc_spring_stack_maintains_95_25_clamping_tension_with_silver_plating_for_electrical_busbars.jpg","attrs":{"Environmental Resistance":"Atmospheric oxidation, industrial pollution, coastal salt spray","Surface Plating":"Silver, tin, or nickel","Operational Life":"25-year","Bolt Size":"M6 to M48"}}
{"title":"High-Capacity Disc Spring Stack for Structural Damping with Customizable Stack","imgUrl":"https:\/\/img.chinax.com\/nimg\/df\/d5\/ba634f7dda401d3fd5628fd92961-200x200-1\/high_capacity_disc_spring_stack_for_structural_damping_with_customizable_stack_heights_and_progressive_dampening.jpg","attrs":{"Dampening Behavior":"Adjustable hysteresis characteristics","Stack Height":"Up to 2000 mm","Outer Diameter":"Up to 1000 mm","Protective Enclosures":"Heavy-duty guide rods, internal alignment sleeves, weatherproof protective boots"}}
{"title":"Heavy-Duty Disc Spring Stack for Fail-Safe Braking with 2000 kN Load Capacity in","imgUrl":"https:\/\/img.chinax.com\/nimg\/56\/72\/0ba4e24d84b0685302e0729e0971-200x200-1\/heavy_duty_disc_spring_stack_for_fail_safe_braking_with_2000_kn_load_capacity_in_crane_systems.jpg","attrs":{"Stress relaxation resistance":"High","Component type":"Disc spring stack","Stack configuration":"Parallel","Disc thickness":"2.0 mm to 50.0 mm"}}
Precision Disc Spring Stack for Machine Tool Spindles and Clamping Systems
For high-speed CNC machining centers, precision and repeatable accuracy are non-negotiable. Jiangsu Sanzhong Elastic Technology Co., Ltd. manufactures high-frequency Disc Spring Stack assemblies designed for machine tool spindles, automatic tool changers (ATC), and workpiece clamping mechanisms. These specialized spring stacks deliver high axial clamping forces within restricted spaces, ensuring that tool holders remain securely locked during heavy milling, drilling, and turning operations.
+------------------------------------------------------------------------+
| SERIES STACK CONFIGURATION |
| |
| Placing washers face-to-face multiplies the total stroke |
| while keeping the load equal to a single disc. |
| |
| ___ ___ ___ |
| / / / |
| /_____ /_____ /_____ |
| _______ _______ _______ |
| / / / |
| _____/ _____/ _____/ |
| |
| Key Benefit: Perfect for CNC tool drawbars that require a long, |
| linear stroke to release and engage tool holders smoothly. |
| |
+------------------------------------------------------------------------+
The dynamic stability of a tool spindle depends directly on the quality of its internal spring elements. Our manufacturing facility utilizes advanced automated heat-treating and precision stamping technologies to ensure that every individual disc within the stack shares the mechanical load uniformly. This uniform distribution prevents uneven wear, minimizes axial runout, and dampens micro-vibrations, resulting in superior workpiece surface finishes and extended spindle bearing life.
Target Client Applications
CNC Machining Center Drawbars: Deployed to maintain constant tension on retention knobs, ensuring secure tool holder engagement.
Power Chuck Clamping Systems: Integrated into hydraulic or pneumatic power chucks to provide fallback mechanical clamping pressure.
High-Speed Rotating Spindles: Used to apply accurate bearing preloads, reducing heat generation and vibration at high RPMs.
Technical Specifications & Product Parameters
Primary Materials: Premium 51CrV4 (DIN 1.8159), optimized via vacuum degassing for high fatigue life.
Force Tolerance Profile: Maintained within strict limits (±5% or tighter) via automated electronic load testing.
Inner Diameter (ID) Range: Machined to fit spindle tie-rods from 4.2 mm up to 200.0 mm.
Fatigue Life Rating: Guaranteed for over 1,000,000 tool-change cycles under recommended deflection ranges (between 50% and 75% of total height).
Surface Balance Enhancement: Shot-peened surfaces to introduce compressive residual stresses, preventing micro-cracking and premature fatigue failure.
