Trailer Spring 7 Leaf 30" X 3" Trailer Single Eye Spring for 15000 Lb Axles Trailer 7 Leaf Spring

Product Description

Trailer Spring 7 Leaf 30" X 3" Trailer Single Eye Spring for 15000 lb Axles Trailer 7 Leaf Spring

Product Description

The function of trailer leaf spring

1. Load Support
 Primary Function: Supports the weight of the trailer and its cargo, distributing the load evenly across the axle(s).
 Heavy-Duty Capacity: Designed to handle varying loads, from light-duty utility trailers to heavy commercial trailers.
2. Suspension & Shock Absorption
 Flexibility: The stacked steel leaves flex to absorb road shocks, bumps, and vibrations, improving ride stability.
 Durability: Made of high-strength steel to withstand repeated stress without breaking.

3. Axle Positioning & Stability
 Keeps Axles Aligned: Helps maintain proper axle spacing and prevents lateral (side-to-side) movement.
 Reduces Sway: Enhances trailer stability, especially when cornering or on uneven terrain.

4. Enhanced Traction
 By maintaining consistent tire contact with the road, leaf springs help improve traction, especially when hauling heavy loads.

5. Simple & Reliable Design
 Low Maintenance: Unlike air suspensions, leaf springs have fewer moving parts, reducing the need for frequent repairs.
 Cost-Effective: More affordable than complex suspension systems while still providing reliable performance.

Specification

ITEMS	VALUE
Type	Single eye flat end
Number of leaves	7
Length	30"
Width	3''
Eye Diameter	1''
Bushing	Rubber
Each capacity	7500 LBS
Axle capacity	15000-16000 LBS

Measurement Method

Accurately measuring your trailer springs and choosing the correct replacements is important for the function of your trailer and will make the job of replacing them much easier. Using replacement trailer springs with the correct length will keep the axle in the same position, eliminating the need to move guards or suspension components like spring hangers. Matching your weight capacity, arch, and leaf count will keep the ride height of the trailer the same and keep the ride characteristics the same. 

Determining when to replace trailer springs
-Noticing the following could warrant such actions even if a spring isn't technically broken:
-Suspension dipping on one side
-Obvious signs of corrosion or cracking
-Creaking or squeaking
-Tire wear, unusually high
-Consistently scraping the bottom when crossing bumps
Should always be per axle, replacing leaf springs helps maintain balance and consistent performance.

Step 1: DETERMINE THE TYPE OF TRAILER SPRING 

Step 2: MEASURE THE WIDTH OF THE TRAILER SPRING

Step 3: MEASURE THE LENGTH OF THE TRAILER LEAF SPRING
To measure the free length, refer to letter "C" above. It is important that your trailer is unloaded when measuring the length. When determining length (C), measure from the center of one spring eye to the center of the other spring eye for double eye trailer springs. 

Step 4: DETERMINE THE CAPACITY OF THE SPRINGS

Step 5: MEASURE FREE OPEN AND ARC OF THE TRAILER SPRING
Measure the free open (H) and the arc (A) and (B) of the trailer spring. These measurements are more for reference and will change with the age and fatigue of your spring. 

Packing & Delivery

Company Profile

Shandong North Autotech Co., Ltd.

Shandong North Autotech Co.,Ltd is a scientific research team. 
We devoted to solving working performance and efficiency of parts in the assembly. 
With many years of experience in the direct relationship with the manufacturer's supplier and our customers, we always show our profession so that you can feel better when choose us. 
We serve semi-trailer parts factories and dealers in Mid Easten , Asia ,American countries and clients all over world with technology and enthusiasm. We believe every ride becomes reliance.

Why Choose Us?

Main Products

OEM/ODM capabilities
Competitive pricing & bulk discounts
Fast shipping

Customs clearance support
Turnkey project solutions

Trailer Axle from 3500-15000LBS

Brake Assembly

Trailer Wheel Hub

Leaf Spring

Hanger Kits( Include HDSS)

Landing/Electric Jack

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FAQ

1. Who are we?
We are based in Shandong, China, start from 2021,sell to North America(10.00%),South America(10.00%),Southeast
Asia(10.00%),Africa(10.00%),Mid East(10.00%),Eastern Asia(10.00%),Central America(10.00%),Northern Europe(10.00%),South
Asia(10.00%),Domestic Market(10.00%). There are total about 11-50 people in our office.
2. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.What can you buy from us?
Trailer axle, wheel hub, leaf spring, hanger kits and more
4. Why should you buy from us not from other suppliers?
We have a trailer parts production more than ten years the supply chain
5. What services can we provide?
Accepted Delivery Terms: FOB,CIF,EXW;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T;
Language Spoken:English,Chinese
6.What is the certificate
At present, the company can undertake CCS, ABS, BV, GL and other certification products