Custom Variable Pitch Compression Spring

Progressive Load | High Fatigue Resistance | Space-Saving Design

Product Description

Our Custom Variable Pitch Compression Springs are engineered to deliver progressive load performance, improved stability, and extended service life in demanding applications. Unlike standard compression springs with constant pitch, variable pitch designs feature non-uniform coil spacing, allowing the spring rate to change during compression.

This progressive behavior enables smoother force control, reduced stress concentration, and minimized buckling, especially in applications with limited installation space or variable load requirements. As compression increases, coils with tighter pitch become active, providing higher resistance and enhanced load-bearing capacity.

Manufactured with precision winding and strict quality control, our variable pitch compression springs are produced from high-quality carbon steel, stainless steel, or alloy steel, with optional surface treatments for corrosion resistance. Each spring can be fully customized based on your drawings, samples, or performance requirements.

These springs are widely used in automotive systems, industrial machinery, electrical devices, and mechanical assemblies, where reliability, durability, and compact design are critical.

Features

• Progressive load characteristic for smooth force transition

• Reduced solid height for space-saving assembly

• High fatigue resistance for long service life

• Improved stability and reduced buckling risk

• Precision-manufactured for consistent performance

• Custom materials, dimensions, and surface finishes available

Technical Parameters

Applications

Custom Variable Pitch Compression Springs are suitable for a wide range of applications requiring controlled force and compact design, including:

• Automotive components: suspension systems, braking mechanisms, seat adjusters

• Industrial machinery: actuators, valves, damping systems

• Electrical and electronic devices: switches, connectors, protection mechanisms

• Home appliances: locking systems, shock-absorbing structures

• Mechanical assemblies: vibration control and load regulation components

Their progressive load behavior makes them ideal for systems exposed to dynamic loads and repeated cycles.

Customization

We offer full OEM and ODM customization services to meet your exact requirements. Custom options include:

• Wire diameter, outer/inner diameter, and free length

• Variable pitch design based on load curve requirements

• Material selection for strength or corrosion resistance

• Surface treatment for environmental protection

• End types and tolerance control

• Prototype development based on drawings or samples

Our engineering team works closely with customers to ensure optimal spring performance and cost efficiency.

Support and Services

• Engineering support and design consultation

• Rapid prototyping and sample approval

• Stable mass production with quality consistency

• Technical documentation and inspection reports

• Responsive pre-sales and after-sales support

Packing and Shipping

• Individual or bulk packing available

• Inner plastic bags with outer cartons or wooden cases

• Customized packaging upon request

• Worldwide shipping by air, sea, or express courier

• Secure packing to prevent deformation during transit

FAQ

Q1: Can you manufacture springs according to drawings or samples?
Yes. We fully support production based on customer drawings, samples, or technical requirements.

Q2: What is the advantage of variable pitch compression springs?
They provide progressive load control, reduced solid height, better stability, and longer fatigue life compared to constant pitch springs.

Q3: What materials are available?
Common materials include carbon steel, stainless steel (SUS304 / SUS316), music wire, and alloy steel.

Q4: Do you offer surface treatment?
Yes. Zinc plating, nickel plating, black oxide, and other finishes are available based on application needs.

Q5: What is your MOQ?
MOQ is flexible and depends on the spring design and production process.