490B-01033
Aluminum Alloy
Baking Paint
Non-Customized
Standard
Engine Main Bearing
490b-01033
Forklift Truck with Xinchai 490 Engine
Cost-Effective Forklift OEM Parts
Leading Forklift Parts
Corrugated Carton with Plywood Case
20*12*6 cm
China
8409999990
Product Description
Product Title: Engine Main Bearing
Product Model: 490B-01033 for Xinchai 490B
Product Model: 490B-01033 for Xinchai 490B
| Item | Description |
| Product Name | Engine Main Bearing (490B)+0.00-30 |
| P/N | 490B-01033 |
| Applied Model | Forklift Truck with Xinchai 490 Engine |
| Net Weight (kg) | 0.55 |
| Gross Weight (kg) | 0.95 |
| Qty per Carton | 1 kit |
| Carton Size (cm) | 20*12*6 |
The Role of Main Bearings:
Main bearings are critical components in the operation of machinery, playing a key role in supporting the crankshaft and ensuring its smooth rotation. Beyond this fundamental function, main bearings serve additional purposes:
1. Delivering Lubricating Oil: Main bearings feature oil grooves and holes. As the crankshaft rotates, these features draw in engine oil and distribute it to the connecting rod bearings, providing necessary lubrication.
2. Protecting Bearings: An oil film is formed between the main bearing and the crankshaft, which acts as a protective layer, reducing direct metal-to-metal contact and thus minimizing wear.
3. Reducing Wear: The surface of the main bearing is precision-machined to achieve a surface roughness of less than 0.4μm, significantly reducing friction and wear during operation.
By fulfilling these roles, main bearings contribute to the efficient and reliable operation of the engine.
