Main Bearing AR12270 – Heavy-Duty Diesel Engine Crankshaft Bearing Set
🔩 Specifications
- Part Number: AR12270
- Part Name: Main Bearing
- Component Type: Standard main bearing set
- Engine System: Crankshaft and engine block assembly
- Primary Function: Supports the crankshaft and maintains proper bearing clearance
- Lubrication Function: Supports a stable oil film between the bearing and crankshaft journal
- Application: Heavy-duty diesel engine applications
- Service Use: Engine overhaul, crankshaft service, and bearing replacement
⭐ Key Features
- Crankshaft Support: Provides stable support for the crankshaft during operation.
- Friction Control: Helps reduce friction between the crankshaft journals and bearing surfaces.
- Load Distribution: Helps distribute crankshaft loads across the bearing surfaces.
- Oil Film Support: Works with engine lubrication to maintain smooth crankshaft rotation.
- Overhaul Ready: Suitable for major engine repair and crankshaft maintenance.
⚙️ Technical Insights
The AR12270 is a standard main bearing set used in K19-series heavy-duty diesel engines. Parts references identify it as a main bearing set with thrust-bearing components and associate it with K19, KTA19, and related engine configurations.
Additionally, the main bearing sits between the engine block and crankshaft main journals, supporting crankshaft rotation while helping control friction and wear. Therefore, technicians should inspect the crankshaft journals, bearing surfaces, oil passages, and bearing clearances during installation. Proper lubrication and correct bearing clearance help support reliable engine operation.
🛠 Application Scenarios
- Heavy-duty diesel engine overhaul
- Crankshaft and main bearing service
- Worn bearing replacement
- Engine rebuilding
- Generator engine maintenance
- Preventive engine repair
Moreover, parts documentation lists AR12270 for KTA19 generator applications and other K19-series configurations. Always confirm the part number and bearing specification against the engine identification before installation.
📦 Availability
The AR12270 Main Bearing is available for heavy-duty diesel engine overhaul and crankshaft maintenance applications. For correct fitment, please provide your equipment model, engine model, or existing main bearing number. In addition, our support team can help verify the appropriate bearing for your application.
