Construction Excavator Machine Shot-Peening Suspension Coil Spring

Product Description

Product Description

Our helical compression springs are made of high-strength spring steel with precise machining. Built to withstand axial loads, they deliver great performance in shock absorption, vibration suppression and repeated elastic rebound. With steady elasticity and extended durability for frequent cyclic operation, these springs are commonly applied to auto suspension systems, heavy equipment, industrial bumpers and various mechanical components.

Core Advantages
Quality Material Options:Made from high-carbon steel, chrome silicon steel or stainless steel. High tensile, heat and fatigue resistance avoids deformation under heavy loads.
Precise CNC Winding:Digital winding ensures consistent size and spring rate with tight tolerances, satisfying OEM assembly precision demands.
Multiple Anti-Corrosion Coatings:Zinc plating, black oxide and electrophoresis resist rust and abrasion, fit for damp, outdoor and tough working environments.
Steady Elasticity:Uniform pitch enables linear rebound to absorb impact and cut vibration, stabilizing machinery and car chassis.
Full Custom Support:Custom wire size, dimension, length, stiffness, end style and surface treatment. We take small prototype orders and bulk production.

Main Application
Automotive: Fit suspension systems for cars, SUVs, pickups and light & medium trucks, as direct OEM replacement coil springs. 
Machinery: Serve as shock absorbers, bumpers and reset components for diverse industrial devices. 
General Industry & Hardware: Deployed in home appliances, mold parts, valve reset structures and assorted elastic mechanical parts.

Delivery time	7-15 Working days	Payment	T/T, L/C
Certificate	CE,ISO	HS Code	7320102000
Origin	Shandong, China	Transport Package	Pallet
Material	65mn, 60si2mn, Sup9, 50crva, 51CRV4	Type	Truck Leaf Spring

Applications

Our parabolic and multi-leaf springs offer great load capacity, stable performance and long service life. Featuring high structural rigidity and outstanding shock absorption, they reliably withstand heavy loads for use on heavy trucks, buses, semi-trailers, pickups, construction machinery, new energy commercial vehicles, agricultural equipment and railway freight components.

About Us

Located in Zibo, Shandong—a major national production base for automobile leaf springs—our factory specializes in developing and manufacturing premium aftermarket leaf springs. 
We supply tapered, parabolic and coil springs plus full suspension accessories. Reliable quality enables us to sustain long-term partnerships with dealers in more than 80 global regions.

Why Choose Us

We are committed to delivering a seamless, reliable experience for every global customer, backed by four core advantages:  

Professional Solution
Boasting abundant industry experience and solid professional expertise, we provide exclusive tailored schemes and attentive technical support, fully meeting your varied usage requirements and business development demands.

Strict Quality Assurance 
All leaf springs undergo full inspections including hardness, dimensional measurement and crack detection to eliminate material defects; our lab conducts fatigue tests simulating rough road conditions, with only intact qualified items released for delivery. Warranty is valid under rated loads while overload damage is excluded, and we provide OEM customization on size, drilling and logo engraving.

Attentive After-sales Service 
We tailor leaf spring production plans to maximize customer benefits. Our professional technical team offers full-cycle order tracking support. You may check cargo status anytime, and we stick firmly to agreed lead times for on-time delivery.

Packaging & Shipping

Quick Transportation
We maintain long-term ties with leading worldwide logistics suppliers. Cost-effective transport options include air shipment and doorstep express. Extensive global transit network ensures safe, punctual goods arrival.

Overseas Expansion

We keep expanding overseas sales of automotive leaf springs year by year. Our suspension springs enjoy global recognition thanks to solid brand credibility. Backed by a complete distributor network and professional international service staff, we keep tapping new markets to drive sustained export growth.

FAQ

Q1. Which equipment can your leaf springs fit? 
A. Our parabolic, flat and multi-leaf springs fit trucks, buses, semi-trailers, pickups, construction machines, new energy commercial vehicles, farm equipment and railway parts. Custom sizes fit most chassis worldwide.
Q2. Do you test springs before shipment? 
A. Every product gets hardness, dimension and crack inspection. Fatigue tests simulate long bumpy road use, and only qualified goods will be dispatched.
Q3. About your warranty terms? 
A. Warranty covers use under rated loads. Damage from overload, unauthorized changes or heavy impact is not included.
Q4. Can you make OEM custom leaf springs? 
A. Yes. We modify sizes, drill mounting holes and mark customer logos following your drawings.
Q5. What order and logistics support do you supply? 
A. Full order tracking, real-time cargo updates and on-time delivery. We also provide remote technical guidance and prompt after-sales service for global clients.