CRANKSHAFT BEARING 09262-30055

Function and technical context

The 09262-30055 crankshaft bearing is a precision component that works in the power transmission system of the outboard engine, supporting the crankshaft and guaranteeing its rotation with minimum friction and maximum geometric centering. Manufactured to exact dimensions of 30 x 72 x 19 mm, this ball bearing acts as a critical fulcrum between the crankshaft and engine crankcase, supporting both radial and axial loads generated during the explosion cycle. Its integrity is decisive for the correct operation of the engine: a worn bearing causes play in the shaft, structural vibrations, loss of compression and, in advanced cases, seizure of the crankshaft with consequent catastrophic failure of the engine. The standardized measurements of this bearing – Suzuki reference 09262-30055 – allow its application in a wide range of two-stroke DT series engines.

When to replace this part?

The most common symptoms of wear in a crankshaft bearing are: dull metallic noise or irregular rattling inside the engine, unusual vibration perceived in the hull or throttle grip, and axial or radial play detectable when manually moving the crankshaft during an overhaul with the engine removed. It is recommended to inspect the condition of the crankshaft bearings at each opening of the crankcase or each time a major overhaul of the propulsion unit is carried out, since their preventive replacement—before serious symptoms appear—avoids higher-cost breakdowns that can leave the boat immobilized at sea.