Stock Code:832124

Bearing Wear Condition Monitor is a detection method used to monitor the condition changes of critical bearings on two-stroke crosshead diesel engines, including main bearings, crankpin bearings, and crosshead bearings. Abbreviated as BWCM.

BWCM (Bearing Wear Condition Monitor)
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This detection method is based on the fact that any slight change in the bearing wall thickness at the load-bearing area of these three types of bearings will cause a change in the bottom dead center (BDC) position of one or more crossheads, depending on the engine's construction.
Product Principle
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Wear Detection
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Splash Oil Temperature Monitoring
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Product Objectives
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1.To detect bearing wear at an early stage, preventing overheating that may cause damage to components beyond the bearing shell — such as the crosshead pin, crank throw, or crankcase deformation. Damage occurs if the bearing lining (white metal or tin-aluminum alloy) wears through and friction develops between the shaft and the steel back of the bearing shell.
2.To enable inspection based on actual bearing condition rather than fixed-interval opening inspections. Opening bearings is time-consuming, labor-intensive, and carries the risk of reassembly errors. Therefore, unnecessary scheduled opening inspections must be avoided.
To achieve the above two objectives, two different methods are available for analyzing BDC signals:
One method detects sudden changes in the BDC position signal.
The other method analyzes gradual bearing wear.

BWCM consists of sensors, data acquisition units, communication units, a computer, cables, mounting brackets, etc. No complex disassembly or on-site measurement is required, as it adopts a real-time monitoring mode. It effectively performs real-time measurement, data analysis, processing, and storage of wear signals from main bearings, crankpin bearings, and crosshead bearings.

Sensors: Includes temperature sensors, displacement sensors, and water-in-oil sensors, each used to collect corresponding data.
Computer: Performs logical calculations based on collected data, displays alarms, and stores relevant data in a database.
Communication Unit: Combines data from acquisition boxes and transmits it to the monitoring computer.
Data Acquisition Unit: Used for collecting data from field sensors
System Composition
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When lubricating oil is contaminated with impurities such as water, the degree of oil emulsification increases. This makes the oil more prone to vaporization at higher temperatures, leading to bubble formation. This not only breaks down the oil film and damages the bearing shell but also easily creates vapor locks, affecting the normal circulation of the lubricating oil circuit.

By using a specialized oil-in-water sensor to detect water content in the lubricating oil, we can provide early warning and avoid unnecessary damage.


Lubricating Oil Water Content Detection
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The diesel engine connecting rod bearing shell is a moving component subjected to the greatest mechanical loads and reciprocating inertial forces. It is also the most wear-prone part, constantly affected by abrasive wear, adhesive wear, fretting wear, fatigue wear, erosion wear, chemical wear, etc.

Under normal operating conditions, it cannot be inspected directly. When the bearing shell becomes abnormal due to wear, its oil temperature will inevitably rise. By monitoring the temperature of the splashed lubricating oil, we can diagnose whether a diesel engine fault has occurred.

Sales Email: sales@secorp.cn
Service Email: cs@secorp.cn
Company Tel: +86-25-57700077
Sales Hotline: +86-25-85549445
Company Address: No. 398 Wangxin Road, Smart Manufacturing Industrial Park, Jiangbei New Area, Nanjing

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