Description
355-8662: Crankshaft Standard Main Bearing
| 355-8662: Crankshaft Standard Main Bearing |
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CAT 355-8662 is a standard-size crankshaft main bearing (Crankshaft Standard Main Bearing) specifically designed for Caterpillar D3500 series diesel engines. It features a steel-backed copper-lead alloy bearing shell, suitable for heavy-duty engines operating under high loads and cavitation conditions. The complete information is as follows:
Core Parameters
Item Details
Type
Standard size (STD) split upper and lower bearing shells with thrust flange design, suitable for standard clearance fit between the main bearing housing and crankshaft main journal.
Suitable Main Journal Diameter
Standard size, suitable for D3500 series engine crankshaft main journals, no size reduction (Undersize).
Materials
Steel backing + copper-lead alloy anti-friction layer + tin-lead plating. The steel backing ensures structural strength, the copper-lead alloy provides excellent load-bearing capacity and fatigue resistance, and the tin-lead plating enhances anti-scuffing ability.
Performance
Optimized cavitation design, suitable for vibration and pressure fluctuations caused by high-pressure oil pumps, reducing the risk of oil film rupture.
Lubrication Relying on forced pressure lubrication from the engine, the oil groove and oil hole design ensures sufficient lubrication and reduces friction loss.
Application Scenarios: Specifically designed for Cat D3500 series heavy-duty diesel engines, used for crankshaft support in mining machinery, large generator sets, marine power equipment, etc., bearing radial and impact loads during engine operation, ensuring smooth crankshaft rotation and maintaining stable engine power output.
Only suitable for diesel engines; not for 3500 series gas turbine engines. Suitable for long-term high-load, continuous operation.
Performance Characteristics: Copper-lead alloy layer + tin-lead plating, low coefficient of friction, wear-resistant and fatigue-resistant, suitable for the high-speed and high-load conditions of D3500 engines, extending crankshaft and bearing life.
Anti-cavitation design reduces damage to bearing surfaces caused by cavitation collapse due to vibration from high-pressure fuel systems, improving reliability.
Split upper and lower bearing structure facilitates replacement during engine overhauls, adapting to the assembly requirements of standard-sized crankshafts without the need for additional crankshaft journal machining.
