Skoda275A2L main bearing
2026-01-13
The main bearing is the core support component of the engine crankshaft, bearing the radial and axial loads during crankshaft rotation and ensuring stable operation under high speed and high load conditions.
Its structure is typically a double-row cylindrical roller bearing or a self-aligning roller bearing, manufactured using high-carbon chromium bearing steel (such as GCr15), which, after heat treatment, possesses high hardness and fatigue resistance.
The inner ring of the bearing is interference-fitted with the crankshaft journal, and the outer ring is pressed into the main bearing housing bore in the engine block, and secured by pre-tightening bolts to form a rigid support system.
This design effectively compensates for slight crankshaft bending and engine block deformation, reduces vibration transmission, and extends engine life.
Its structure is typically a double-row cylindrical roller bearing or a self-aligning roller bearing, manufactured using high-carbon chromium bearing steel (such as GCr15), which, after heat treatment, possesses high hardness and fatigue resistance.
The inner ring of the bearing is interference-fitted with the crankshaft journal, and the outer ring is pressed into the main bearing housing bore in the engine block, and secured by pre-tightening bolts to form a rigid support system.
This design effectively compensates for slight crankshaft bending and engine block deformation, reduces vibration transmission, and extends engine life.
Skoda27.5A2L Main Bearing, Conrod Bearings and Thrust Bearings With Babbit coating
Russia Locomotive Lever axis Д49.78.09-2
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