LSHX-630X5SN Lubricating Oil Filter Element

Product Datasheet & Application Guide

I. Product Overview

The LSHX-630X5SN lubricating oil filter element is a high-precision filtration component specifically developed for lubricating oil stations and hydraulic oil systems of large power plant auxiliary equipment (such as induced draft fans, coal mills, feed water pumps, etc.). It is widely used in thin oil lubrication devices with strict cleanliness requirements.

Designed in accordance with standard filter element structures, this model features a rated flow rate of 630 L/min and a filtration rating of 5 μm. It is characterized by high dirt-holding capacity, low pressure drop, and a long service life.

During the operation of power plant equipment, solid particles, wear debris, and colloidal oxides in the lubricating oil accelerate the wear of bearings and gears. This can even trigger severe failures such as bearing bush burnout or jammed regulation mechanisms. Acting as the core barrier for oil purification, the LSHX-630X5SN effectively intercepts harmful impurities in the circulating oil system to maintain oil cleanliness within permissible limits, thereby extending equipment maintenance intervals and oil service life. As a professional spare parts supplier, we offer this product as an ideal choice for replacing consumable parts in your lubrication systems during power plant maintenance periods.

II. Product Features

• High-Precision Filtration, Guaranteed Cleanliness With a rated filtration accuracy of 5 μm, it effectively filters out fine abrasive particles and dust that are most hazardous to bearings and gears. This ensures oil cleanliness complies with NAS or ISO standards, significantly reducing the wear rate of moving pairs.

• Large Dirt-Holding Capacity, Extended Replacement Cycles Utilizing a multi-layer deep filtration structure, the filter element offers a large effective filtration area and high dirt-holding capacity. Under normal oil contamination levels, it provides a long service life, reducing maintenance workload and spare parts consumption caused by frequent replacements.

• Low Pressure Drop & High Flow Capacity The flow specification of 630 L/min meets the circulation flow demands of lubricating oil stations in large auxiliary machinery. The fluid-optimized structural design ensures a low initial pressure drop. Even as the filter element gradually clogs, the pressure differential rises smoothly, preventing increased pump energy consumption or cavitation caused by excessive local pressure drops.

• Excellent Medium and Temperature Compatibility Constructed from high-quality fiberglass or composite fibers, the filter material exhibits excellent oil resistance, heat resistance, and hydrolytic stability. It is compatible with various oils, including mineral and synthetic oils. The continuous working temperature accommodates standard lubricating oil operating ranges (-20°C to +100°C) and maintains structural integrity under transient high-temperature conditions.

• Reliable Structure with Great Interchangeability Manufactured strictly to standard external dimensions and interface specifications, it features seals made of NBR (Nitrile Rubber) or FKM (Fluororubber) to ensure reliable sealing with the filter housing. Installation is quick and convenient, allowing direct replacement of original filter elements of the same model without any modifications.

III. Technical Advantages

Advantage 1: Precise Filtration to Protect Friction Pairs

The bearings and gearboxes of coal mills and induced draft fans are extremely sensitive to oil cleanliness. The 5 μm filtration rating traps most harmful particles generated during the initial wear stages or introduced from the outside, preventing them from entering bearing clearances or gear meshing surfaces, thus minimizing bearing vibration and gear pitting risks.

Advantage 2: High Dirt-Holding Capacity to Lower Maintenance Frequency

Featuring a deep gradient filtration structure, the internal fiber layers form tortuous pathways that drastically increase dirt-holding capacity without increasing pressure drop. Compared to conventional filter elements, the LSHX-630X5SN can be used longer under the same differential pressure alarm threshold. This makes it particularly suitable for long-cycle, continuous power plant operations, easing the pressure of replacing filtration spares during maintenance shutdowns.

Advantage 3: Low Initial Pressure Drop for Energy Efficiency and Reliability

The initial pressure drop of a clean filter element is extremely low (typically ≤0.03 MPa), minimizing its impact on oil pump energy consumption. Throughout its lifespan, the pressure drop rises at a gentle rate, mitigating the risk of poor oil flow or the bypass valve opening (which would pollute the oil system) due to rapid clogging.

Advantage 4: Outstanding Collapse Resistance

Equipped with a high-strength internal metal skeleton and end caps, the filter element can withstand system pressure fluctuations and high differential pressure impacts. This prevents filtration layer deformation or damage, ensuring contaminants do not bypass into downstream systems due to filtration failure.

IV. Application Scenarios

1. Induced Draft Fan Lubrication Systems

The thin oil stations of induced draft fan bearing boxes are typically equipped with duplex filters. The LSHX-630X5SN filter element fits seamlessly into flow-matched filter housings, ensuring lubricating oil cleanliness during continuous fan operation and extending bearing service life.

2. Coal Mill Reducers & Lubrication Stations

The internal gears of coal mill reducers demand high precision, making the accuracy of the lubricating oil filter element critical to gear lifespan. This filter element can be installed in the reducer oil supply pipelines or oil station filters to effectively remove metal microparticles generated by gear wear.

3. Feed Water Pumps & Primary Air Fan Lubrication Systems

For large rotating machinery utilizing forced lubrication, a 5 μm precision filter element meets the stringent oil cleanliness requirements of precision bearing bushes, effectively lowering the risk of bearing burnout.

4. Hydraulic Regulation Systems

Certain hydraulic regulation systems for fans or coal mills (such as hydraulic loading and moving blade adjustment) require even higher oil cleanliness. This filter element can serve as a primary filter or return filter upstream of the servo system.

5. Scheduled Maintenance & Spare Parts Stocking

Lubricating oil filter elements are consumable spares that require periodic replacement. It is highly recommended to replace all filter elements during every scheduled power plant maintenance outage (Class C, B, or A overhauls). Additionally, based on the number of units and filtration loops, it is advised to stock a buffer of at least one to two replacement cycles to handle unplanned replacement needs.

DFYLSYC-2026-06-03-A