177-2583 Sbs120 Hydraulic Pump Sliding Bearing For E320c Excavator Spare Parts Bearing Pads 1772583 Excavator Pump Parts

177-2583 Sbs120 Hydraulic Pump Sliding Bearing For E320c Excavator Spare Parts Bearing Pads 1772583 Excavator Pump Parts

Load support and shaft positioning They support the crankshaft/shaft journal, transfer the heavy load of the rotating shaft to the engine block/housing, limit the radial runout of the shaft, stabilize the rotation center and prevent shaft offset and wobble.

Oil film formation to reduce friction and wear (the most critical function) A tiny clearance is reserved between the bearing shell and shaft journal. During operation, engine oil forms a liquid lubricating film that separates metal surfaces. It converts dry friction into hydrodynamic friction, greatly reducing wear and protecting the costly crankshaft and main shaft. Once the oil film breaks down, direct metal-to-metal contact occurs between the shaft and journal, which rapidly leads to high-temperature seizure, commonly known as bearing burn-out.

Shock absorption, vibration and noise reduction Engines and hydraulic pumps of construction machinery are subject to fluctuating loads. The oil film combined with the anti-friction alloy layer of the bearing shell absorbs alternating impact loads, dampens vibration and lowers operating noise.

Heat dissipation and debris removal Circulating lubricating oil flows through the clearance of bearing shells to carry away heat generated by friction. Meanwhile, the oil flushes away fine metal particles produced by wear.

Embeddability (foreign particle accommodation) The soft alloy layer on the surface of bearing shells can embed fine dust and metal particles, preventing hard particles from scratching the shaft journal and protecting the main shaft.

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