Product introduction
These Cummins crankshaft bearings are specifically designed for Cummins K19 and QSK19 series engines. Made from high-strength alloy materials, these crankshaft bearings offer excellent wear resistance and load-bearing capacity, capable of withstanding the maximum torque of up to 2586 N·m from the K19 engine. As a core component of Cummins engine crankshaft bearings, the AR12270-10 crankshaft main bearing employs precision machining to ensure a perfect fit with the crankshaft journals, effectively reducing friction loss. Its design fully considers the large 19L displacement characteristics of the K19 and QSK19 engines, as well as their power output requirements of up to 1210 horsepower.
Product Images
Product Parameters
|
Parameter Category |
Detailed Description |
| Part number | AR12270-10 |
| Applicable engine model | Cummins K19 and QSK19 series |
| Material properties | High-purity bearing steel (surface hardness HRC60-64) |
| Machining accuracy | Roughness Ra=0.012(no defects when magnified 30 times) |
| Maximum carrying torque | ≥2586N·m |
| Adapt engine displacement | 19L(Cylinder bore × stroke 159×159mm) |
Product Advantages
Made of high-purity bearing steel, it features high hardness and strength, excellent wear resistance and contact fatigue strength, ensuring long-term stable operation; good dimensional stability and corrosion resistance, adapting to various working environments.
FAQ
Q1. Which engine models is the AR12270-10 Cummins K19 QSK19 crankshaft main bearing suitable for?
This bearing is specifically designed for Cummins K19 and QSK19 series engines. It is the standard part number for Cummins engine crankshaft bearings and is perfectly matched to the crankshaft systems of these two engine models.
Q2. What are the material properties of this crankshaft main bearing?
It is made of high-purity bearing steel with a Rockwell hardness of 60-64 on the C scale. It has excellent wear resistance and contact fatigue strength, and a surface roughness of Ra=0.012, with no surface defects under 30x magnification.
Q3. What performance specifications of the K19 engine can this bearing withstand?
It can fully meet the K19 engine's maximum torque of up to 2586 N·m and power output requirements of 1210 hp (890 kW), perfectly matching the 19L large displacement engine (bore × stroke 159 × 159 mm).
Q4. What is the maintenance cycle for this bearing?
As a Cummins original part, it is manufactured with high-strength materials, has an extremely low failure rate, long overhaul cycle, and significantly reduces maintenance costs. It is one of the key components ensuring the long-term stable operation of the engine.
Q5. Which international shipping methods are suitable for this product?
We will use sea freight, with a delivery time of generally 10-60 days.
Q6. What are the export packaging requirements for the AR12270-10 crankshaft main bearing?
All items must be packed in wooden crates, clearly marked with the model and quantity.
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