Description
Overview:
This Main Bearing is a Genuine Yanmar part designed for the L100N and L90AE single‐cylinder diesel engines. It supports the crankshaft journal, maintaining correct alignment and oil film for smooth running and long service life. Manufactured from high‐quality bearing-grade metals with a steel-backed construction, it is built to handle the loads and temperatures found in compact industrial engines. Precision sizing ensures correct seating in the crankcase and stable clearances under operating conditions. Key dimensions are Outer Diameter: 45 mm and Height: 22 mm. Suitable for routine maintenance, overhaul, or a like‐for‐like replacement where wear or scoring is present, this OEM bearing helps restore reliable performance in equipment powered by Yanmar plant engines.
Key Features:
- Genuine Yanmar OEM main bearing for assured fit and compatibility with L100N and L90AE engines
- Engineered bearing materials for durability, load capacity, and consistent oil film retention
- Supports crankshaft alignment to reduce friction, vibration, and premature wear
- Precise dimensions (OD 45 mm, height 22 mm) for correct seating and oil clearance
- Built to withstand continuous-duty use common in plant, hire, and site equipment
- Suitable for preventative maintenance or full bottom‐end rebuilds
- Helps restore oil pressure stability and smooth engine operation when replacing worn bearings
- Straightforward to install for competent DIY users or professional technicians following service manual procedures
Typical Applications:
Used during servicing or overhauls of Yanmar small diesel engines driving generators, water pumps, plate compactors, cement mixers, power trowels, light construction machinery, and agricultural equipment. Ideal when addressing symptoms such as low oil pressure, bottom‐end noise, or visible bearing wear to restore dependable operation.
Also known as:
Crankshaft main bearing, main journal bearing, crank bearing, engine main shell, bottom‐end bearing, main bearing shell, crank main shell, replacement engine bearing.
Fits Models:
L100N, L90AE, L100AE
Alternate Part Numbers:
114650-02100, 11465002100
