Heavy-Duty Disc Spring Stack for Fail-Safe Braking with 2000 kN Load Capacity in

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Stress relaxation resistance	High
Component type	Disc spring stack
Stack configuration	Parallel
Disc thickness	2.0 mm to 50.0 mm
Industrial use	Heavy-duty
Application temperature	Outdoor
Stack direction	Same direction nesting
Energy retention	Long-term
Stroke consistency	Constant
Quality testing	Mandatory presets
Corrosion protection	Geomet, Dacromet, electro-galvanizing, epoxy powder coating
Brake engagement	Instant
Initial setting	Zero loss
Emergency force	Massive
Load capacity retention	Years
Material	51CrV4, 60Si2Mn, custom alloys
Max load capacity	2000 kN
Force multiplication	Yes
Installation type	Caliper brake
Surface treatment	Advanced coatings

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Product Details
Company Details

Product Specification


Stress relaxation resistance	High	Component type	Disc spring stack
Stack configuration	Parallel	Disc thickness	2.0 mm to 50.0 mm
Industrial use	Heavy-duty	Application temperature	Outdoor
Stack direction	Same direction nesting	Energy retention	Long-term
Stroke consistency	Constant	Quality testing	Mandatory presets
Corrosion protection	Geomet, Dacromet, electro-galvanizing, epoxy powder coating	Brake engagement	Instant
Initial setting	Zero loss	Emergency force	Massive
Load capacity retention	Years	Material	51CrV4, 60Si2Mn, custom alloys
Max load capacity	2000 kN	Force multiplication	Yes
Installation type	Caliper brake	Surface treatment	Advanced coatings
High Light	Heavy-Duty Disc Spring Stack ，Fail-Safe Braking Disc Spring Stack

Heavy-Duty Industrial Braking & Crane Infrastructure

Heavy-Duty Disc Spring Stack for Crane Fail-Safe Caliper Brakes

Industrial hoists, overhead cranes, and mining winches require fail-safe braking mechanisms to protect personnel and heavy cargo. Jiangsu Sanzhong Elastic Technology Co., Ltd. is a leading supplier of heavy-capacity Disc Spring Stack assemblies used in emergency caliper brakes and rail clamps. Our spring stacks act as the primary mechanical energy storage element, instantly engaging the brake pads whenever hydraulic pressure or electrical power is lost.

+------------------------------------------------------------------------+ | PARALLEL STACK CONFIGURATION | | | | Nesting washers in the same direction multiplies the total | | load capacity while keeping the stroke constant. | | | | ___ ___ ___ ___ | | / / / / | | /____________________ | | _________________________ | | / | | /___________________________ | | | | Key Benefit: Provides massive emergency stopping force | | within small hydraulic brake caliper housings. | +------------------------------------------------------------------------+

Because emergency brakes can sit idle for long periods before being called upon to deliver immense force, resistance to stress relaxation (creep) is vital. Our engineering processes ensure that our disc spring stacks retain their stored energy over years of standby operation without losing load capacity. This reliability provides emergency braking systems with the constant force required to bring massive kinetic loads to a safe, controlled stop.

Target Client Applications

Overhead Gantry Cranes: Installed in main hoist emergency disc brakes to prevent load drops during power interruptions.
Port Container Handling Equipment: Integrated into storm brakes and rail clamping systems to secure heavy machinery against high winds.
Mining & Conveyor Systems: Applied to high-torque drive conveyor systems to facilitate controlled deceleration and emergency braking.

Technical Specifications & Product Parameters

Material Integrity: Heavy-gauge 51CrV4, 60Si2Mn, and custom alloy formulations optimized for thick-section spring elements.
Thickness (t) Sizing: Capable of processing thick plates from 2.0 mm up to 50.0 mm per individual disc.
Max Static Load Capacity: Scalable stack configurations delivering forces exceeding 2,000 kN.
Corrosion Protection: Advanced surface coatings including Geomet, Dacromet, electro-galvanizing, or epoxy powder coating for outdoor maritime exposure.
Quality Verification: Each stack undergoes mandatory presets (scragging) to zero out initial setting losses before shipping.

Company Details

Bronze Gleitlager

Bronze Sleeve Bushings

and

Graphite Plugged Bushings

from Quality China Factory



Business Type:

Manufacturer,Exporter,Seller 


Year Established:

2006 


Total Annual:

1.2M-1.4M


Employee Number:

160~200 


Ecer Certification：

Verified Supplier 

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Reach Us
Jiangsu Sunzo Spring Elasticity Technology Co., Ltd
No.20, Xinghuo Road, Nanjing High-tech Development Zone
https://www.spring-disc.com/

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