Leaf Spring for Kenworth

Your Professional Leaf Spring For Kenworth Supplier

Founded in 2011 in Zhengzhou, Henan, our factory specializes in the manufacturing of automotive leaf springs for both aftermarket and OEM customers. We operate three dedicated production lines equipped with environmental protection systems, ensuring stable and compliant production under strict regulatory requirements. Our team consists of more than 150 skilled frontline workers, supported by 15 engineers and technicians and 30 professional office staff. With a well-managed manufacturing facility, standardized processes, and reliable inspection equipment, we focus on consistent quality, traceable production, and long-term cooperation. Our capabilities and disciplined operations enable us to serve international customers with confidence and reliability.

Parabolic Leaf Spring Oem 59-562, B81-6012-003 For Kenworth Truck
1. Painted black by electrophoresis 2. OEM:59-562, B81-6012-003 for Kenworth truck, with threaded bushings 3. At the front location 4. The optional material:Sup9,50CrVA,51CrV4,52CrMoV4
Parabolic Leaf Spring Oem 59-560, B81-6012-002 For Kenworth Truck
1. Electrophoresis Coating black 2. OEM:59-560, B81-6012-002 for Kenworth truck 3. At the front location with rubber bushing4. The optional material:Sup9,50CrVA,51CrV4,52CrMoV4
Parabolic Leaf Spring Oem 59-548, B81-6012-001 For Kenworth Truck
1. Electrophoresis Coating black 2. OEM:59-548, B81-6012-001 for Kenworth truck 3. At the front location with rubber bushing4. The optional material:Sup9,50CrVA,51CrV4,52CrMoV4
OME: 59-400 49032 K2231073 Full Taper Leaf Spring with 3 Leaves for Kenworth Trucks
1. Parabolic leaf spring included 2 threaded bushings. 2. Assy painted black directly by electrophoresis process. 3. Leaf spring painting thickness greater than 30μm . 4. Against rust and dust
OEM:59-009 59009 Multi Leaf Spring with 13 Leaves for Kenworth W900 Truck
1. Multi heavy duty leaf spring for Hendrickson w900, the main leaf with one up cup.. 2. Assy painted black directly by electrophoresis process. 3. Leaf spring painting thickness greater than 30μm .
OEM:59-428 HK48110-1440 Front Heavy Duty Leaf Spring for Kenworth Trucks
1. Full taper heavy duty front leaf spring included threaded bushings. 2. Assy painted black directly by electrophoresis process. 3. Leaf spring painting thickness greater than 30μm . 4. Against rust
OEM:59-464 HK481102706 Front Full Leaf Spring with 2 Leaves for Kenworth T2000
1. Full taper heavy duty front leaf spring included threaded bushings for Kenworth T2000. 2. Assy painted black directly by electrophoresis process. 3. Leaf spring painting thickness greater than

Why Choose Us

OEM & ODM Customization

Based on customer drawings or technical data, our engineers provide optimized designs aligned with application requirements and practical manufacturing conditions.

Production Market

Our products are distributed through authorized dealers across China and exported to North America, Latin America, the Middle East, and Southeast Asia.

Product Application

Our leaf springs are used in light, medium, and heavy trucks, buses, trailers, and construction vehicles.

Standard Quality & Warranty Support

Standard production control ensures stable quality, with a 6-month warranty from the start of use.

OEM:59-428 HK48110-1440 Front Heavy Duty Leaf Spring for Kenworth Trucks

Commonly referred to as a leaf spring or spring beam, is a fundamental component of a heavy-duty vehicle’s suspension system. These springs are engineered to support substantial loads, absorb road shocks, and maintain axle alignment under stress. Found primarily in commercial trucks, utility vehicles, and off-road rigs, front springs play a crucial role in ensuring safety, ride stability, and durability. Choosing the right type of front spring can significantly impact vehicle performance, comfort, and longevity.

1	Spring Numer	2
2	Size	100x25-1630 mm
3	Painting Colour	Black
4	Bushings	2 Threaded Bushings
5	Application	Hendrickson
6	Spring Material	60Si2Mn SUP9/55CrMn 50CrVA 51CrV4 52CrMoV4
7	Packing Way	Square Wood Wooden Pallet Metal Pallet
8	MOQ	50
9	Warranty time( used time)	6 months

Advantages of OEM:59-428 HK48110-1440 Front Heavy Duty Leaf Spring for Kenworth Trucks

Shock Absorption

As the truck encounters bumps, potholes, or uneven terrain, the front springs compress and expand to absorb kinetic energy, reducing the impact felt by the driver and passengers.

Weight Support

The springs bear the static and dynamic weight of the vehicle, helping maintain proper ground clearance and ride height. This ensures even tire contact with the road surface for consistent handling and braking performance.

Stability and Control

By keeping the front wheels firmly planted on the road, especially during cornering or sudden maneuvers, the springs contribute directly to steering precision and vehicle control. This enhances safety and driver confidence.

Load Distribution

In trucks equipped with payload capacities, front springs help distribute weight evenly across the chassis, preventing sagging and maintaining balanced suspension geometry.

Types of OEM:59-428 HK48110-1440 Front Heavy Duty Leaf Spring For Kenworth Trucks

Parabolic Leaf Spring

Designed with a tapered, parabolic (teardrop-shaped) profile, this spring uses fewer but precisely shaped steel leaves. The design reduces weight and internal friction, improving ride smoothness without compromising strength.

Multi-Leaf Spring

Composed of multiple layers (leaves) of spring steel stacked and clamped together, this is the most traditional and widely used leaf spring design. It excels in load distribution and durability under constant stress.

Elliptical Leaf Spring

Characterized by its oval or egg-shaped design, the elliptical leaf spring integrates the spring and suspension linkage into a compact, balanced unit. This design helps evenly distribute stress and improves axle control.

Camber Leaf Spring

Engineered with a pre-curved (arched) profile, camber springs maintain optimal wheel alignment during suspension travel. This curvature enhances tire contact during cornering, improving grip and steering response.

Monoleaf Spring

Constructed from a single, thick piece of high-tensile spring steel, the monoleaf design offers a minimalist yet robust solution. Often reinforced with composite layers, it combines simplicity with modern engineering.

Material of OEM:59-428 HK48110-1440 Front Heavy Duty Leaf Spring for Kenworth Trucks

Steel Springs

The most widely used option due to their high tensile strength and ability to withstand heavy loads and repeated stress cycles. They are ideal for commercial trucks, towing vehicles, and off-road applications.

Composite Springs

Made from advanced polymer or fiberglass-reinforced materials, these are up to 70% lighter than steel, improving fuel efficiency and reducing unsprung weight. They are naturally corrosion-resistant and require minimal maintenance, making them suitable for harsh environments.

Trade-offs

While composites offer weight savings and rust resistance, they generally have lower fatigue resistance under extreme loads compared to high-grade steel.

Specifications of OEM:59-428 HK48110-1440 Front Heavy Duty Leaf Spring For Kenworth Trucks

Spring Rate
The spring rate measures the stiffness of a spring, typically expressed in pounds per inch (lb/in) or newtons per millimeter (N/mm). It indicates how much force is required to compress the spring by one unit of distance. A higher spring rate results in a stiffer ride, ideal for heavy-duty trucks that carry substantial loads. Conversely, a lower spring rate offers a softer, more comfortable ride, suitable for lighter trucks or those used primarily for passenger transport.

Material Composition
High-quality front springs are typically made from high-tensile alloy steel or silicon-chrome steel, chosen for their excellent strength-to-weight ratio and resistance to fatigue. These materials undergo heat treatment processes such as shot peening and tempering to enhance durability and prevent cracking under repeated stress.

Load Capacity
Load capacity refers to the maximum weight a front spring can safely support without permanent deformation or failure. This specification must align with the truck’s gross axle weight rating (GAWR) and typical cargo load. Exceeding the recommended load capacity accelerates wear, reduces ride height, and compromises steering and braking efficiency.

Free and Installed Height
The height of a front spring—measured both in its uncompressed (free) state and when installed on the vehicle (installed height)—directly affects the truck’s ground clearance, center of gravity, and alignment. Incorrect spring height can lead to improper suspension geometry, uneven tire wear, and reduced handling precision.

Wire Diameter and Coil Design
The diameter of the spring wire plays a significant role in determining stiffness and load-bearing capability. Thicker wires produce stiffer springs capable of handling heavier loads, while thinner wires offer more flexibility and comfort.

Compatibility and Mounting Type
Front springs must be compatible with the truck’s make, model, and suspension system (e.g., leaf spring, coil spring, or torsion bar). Mounting dimensions, eyelet size (for leaf springs), and centering mechanisms must match precisely to ensure secure installation and proper function.

How to choose Front Heavy Duty Leaf Spring for Kenworth Trucks

OEM:59-464 HK481102706 Front Full Leaf Spring with 2 Leaves for Kenworth T2000

Load Capacity

Match the spring rating to your typical payload. Overloading weak springs leads to premature failure, while under-spec’d springs waste potential utility.

Ride Height

Choose springs that maintain factory or desired ground clearance. Lifted or lowered configurations require specially designed spring packs.

Spring Rate

A higher spring rate provides stiffer support for heavy-duty use, while a lower rate offers a smoother ride for lighter applications.

Material and Construction

Look for multi-leaf designs with shot-peened surfaces and inter-leaf liners to reduce friction and increase longevity.

VIN or OEM Specifications

Use your truck’s make, model, year, and gross vehicle weight rating (GVWR) to find exact-fit replacements.

Maintenance

Keep Springs Clean

Road grime, salt, and moisture accelerate corrosion. Regularly wash the undercarriage and use a soft brush to remove debris trapped in coil or leaf springs. This improves inspection accuracy and prolongs component life.

Avoid Overloading

Consistently exceeding the truck’s rated capacity places excessive stress on front springs, leading to premature fatigue and permanent sagging. Always adhere to manufacturer load limits and distribute weight evenly.

Ensure Proper Lubrication

For leaf springs, lubricate the inter-leaf surfaces and bushings periodically with a high-quality grease to reduce friction and prevent squeaking. Use dry-film lubricants in dusty environments to avoid attracting debris.

Replace Worn or Damaged Springs

If a spring shows signs of cracking, severe corrosion, or loss of tension (evidenced by lowered ride height), replace it immediately. Replace springs in axle pairs to maintain balanced suspension performance.

Seek Professional Maintenance

Suspension work requires precision tools and expertise. If unsure, have a certified mechanic inspect and service the front springs. Professionals can perform alignment checks and load testing to ensure optimal performance.

Certificates

productcate-1-1

FAQ

Q: What's your best price for your product?

A: We will quote you best price according to your requirements, so when you making an inquiry, please let us know the quantity and material of the product you need. The more quantity, the better price.

Q: Can we print our own logo or label on the springs?

A: Yes, you can. We support logo print&label print&stamping, normally the print is free.

Q: What about the package of the product?

A: The goods will be packed according to your requirements and in well protection before delivery.

Q: What are your payment terms?

A: 30% T/T as deposit, 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Q: What is the delivery time?

A: Generally speaking, the production time is 3-4 weeks. The specific delivery time depends on the goods and quantity of your order.

As one of the most professional leaf spring for kenworth manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy high-grade leaf spring for kenworth at competitive price from our factory.

parabolic leaf spring, transport suspension spring