ISUZU Rear Spring Leaf For NPR NQR

Why Are Truck Leaf Springs Made with Stacked Main and Auxiliary Plates?

Truck leaf springs are designed with multiple layers of steel plates (main and auxiliary leaves) for the following key reas

Load Capacity & Strength

• The main leaf bears the primary vertical load, while auxiliary leaves (shorter plates stacked beneath) progressively engage under heavier loads. This layered design distributes stress more evenly, preventing single-plate fatigue failure.Adaptability to Load Variations

  • When unloaded or lightly loaded, only the main leaf flexes, providing a smoother ride.

  • Under heavy loads (e.g., cargo), auxiliary leaves come into contact, stiffening the spring to prevent sagging and maintain stability.Durability & Fatigue Resistance

    • Stacking plates spreads bending forces across multiple layers, reducing stress concentration on any single plate. This extends the spring’s lifespan under repeated heavy use.Controlled Flexibility

      • The main leaf offers initial flexibility for minor bumps, while auxiliary leaves add graduated stiffness. This balances comfort (empty trips) and support (loaded trips).

      • Reduced Weight (vs. Solid Beams)

        • A single thick plate would be heavier and less flexible. Layered thin plates achieve similar strength with lighter weight and better shock absorption.

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1. Supply ISUZU genuine parts , ISUZU Bvp parts , OEM parts , high cost performance China manufacture parts .

2. General agent of ORIGIN PARD in China.

3. Thirty years of retail and wholesale experience . The sales group with average of five years experience , can answer any professional question . Equipped with a professional quality inspection team.

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FAQ

1.Q:What is your terms of payment?
A:T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

2.Q:Are you manufacturer or trading company?
A: We are both factory and trading company , we combination for more than 10 years. We have invested in 3 factories.

3.Q: How about the delivery time of the goods?
A: For testing sample, which it depends on the storage.
For bulk production, the delivery time is about 15-30 days based on order situation.

4.Q.:Can you produce according to the samples?
A: Clients’ sample is welcome. We are able to produce the specific products according to your sample.
If you do not find the product you need, tell us detailed information, we have the ability to design and manufacture as requested.

5.Q: Can I get a lower price if I order large quantities?
A: Yes, cheaper prices with more bigger size orders.