Differential Case QT450-10 High-Torque Replacement Part for Commercial Truck Rear-
This differential case is manufactured from QT450-10 ductile iron with heat treatment and high-precision CNC machining. It can bear torque up to 4500 N·m and achieve a service life of 300,000 kilometers.
Specifications & Features
Product Description
| 规格名（Label‑English） | 规格值（Value‑English） |
| Product Name | Differential Case |
| Featured Functions | High‑torque resistance, anti‑fatigue, high‑precision machining, strong impact‑resistance, low‑wear, stable performance after heat‑treatment |
| Typical Applications | Dong‑feng light‑duty & medium‑duty commercial‑truck, heavy‑duty pickup rear‑axle differential assembly, aftermarket replacement & OEM matching parts |
| Housing Material | QT450‑10 High‑strength ductile iron with quenched & tempered heat‑treatment |
| Weight (Kg) | 7.6 KG |
| Product Size (mm) | Flange outer diameter:216mm；Upper journal Φ65mm；Lower journal Φ60mm；8‑Φ13 mounting holes, pitch‑circle‑diameter:186mm；Planet gear inner‑cavity matching size Φ112mm |
| Machining Precision | Bearing‑hole roundness ≤0.03mm; Coaxiality ≤0.05mm; Surface roughness Ra1.6‑3.2μm; Hole position tolerance ±0.02mm |
| Max Allowed Torque | 4500 N·m |
| Hardness Parameter | Journal high‑frequency quenched HRC52‑58; Main‑body HB160‑220 |
| Internal Inspection | 100% Ultrasonic‑Test + Metallographic analysis, no crack, pore, shrinkage‑cavity, inclusion defects |
| Dynamic Balance Test | Dynamic‑balance test ≤12g·cm |
| Working Temp (℃) | ‑40℃ ~ +120℃ |
| Storage Temperature | ‑20℃ ~ +60℃ |
| Service Life | ≥300,000 km under normal driving condition |
| Surface Treatment | Anti‑rust paint on casting‑surface, anti‑rust oil on machined‑surface, passivation treatment |
| Heat‑treatment Process | Overall quenched‑tempering + journal partial high‑frequency quenching |
| OEM Service | Accept customized OEM part‑number laser marking and packing design |
| MOQ | 50 PCS |
| Lead Time | 7‑15 days for regular order; 20‑25 days for customized‑order |
| No. of Package (pcs) | 1pc per carton |
| Package Size (cm) | 28cm×28cm×16cm |
| Volume (CBM) | 0.0125 CBM per piece |
| Gross Weight (kg) | 8.4kg per piece |
Customer Reviews (5)
The differential‑case works reliably on our heavy‑duty trucks under regular heavy‑load conditions. The overall build quality meets our expectations, and we are satisfied with this purchase.
This replacement part matches well with our truck models. Quality is consistent batch‑by‑batch, which helps us reduce after‑sales troubles for our clients.
The machining finish is good. We have used these parts for months, and no abnormal issues have appeared so far.
IVOLTECK keeps steady delivery time. Their communication is smooth, we are willing to keep buying parts from them in future.
Durability is pretty good for daily‑heavy‑use trucks. It is a practical and cost‑effective alternative to original parts.
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