Asset Protection
Helps reduce contamination-driven wear in lubricated components, pumps, bearings, gears and liners.
ISO-Reliability Partners Micro Fine Filtration
ISO F8-Series Oil Filtration System
The ISO F8-Series Oil Cooling and Conditioning System is a rugged micro fine bypass filtration system engineered for gearboxes, crushers, ball mills, hydraulic systems, turbine lubrication and high-contamination industrial oil applications. It continuously removes water and particulate contamination to help protect critical assets, improve oil cleanliness and reduce total cost of ownership.
40 L/min
Gear pump flow rate
1–4 bar
Best operating pressure
40–55°C
Best oil temperature range
Cleaner Oil. Longer Component Life.
Industrial oil filtration designed for harsh operating conditions
The ISO F8-Series is designed as a standalone bypass, or kidney-loop, oil filtration system. It draws oil from the lowest part of the reservoir, filters and conditions the oil, and returns it to the tank without interfering with the normal lubrication circuit.
Water Removal
Designed to remove free water, dissolved water and particulate contamination from hydrocarbon systems.
Lower Oil Costs
Cleaner oil can extend oil service life and reduce unnecessary oil drain intervals caused by contamination.
Reliability Focused
Built for high contamination applications where uptime, cleanliness and maintenance control are critical.
Product Visuals
ISO F8-Series system overview
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Product Applications
Built for demanding lubrication and hydrocarbon systems
The F8-Series is suited to industrial sites where oil contamination directly affects machine availability, component life, maintenance cost and production reliability.
Gearboxes
Ball Mills
Crushers
Lubricating Systems
Diesel
Hydraulic Systems
Turbines
Transformers
Quench Oils
Technical Specification
ISO F8-Series construction and operating data
A practical technical summary for maintenance teams, reliability engineers and plant personnel evaluating the F8-Series for offline oil conditioning and contamination control.
| Filter Vessel | F8 filter vessel manufactured from mild steel and powder coated for industrial use. |
|---|---|
| Dimensions | Filter vessel: H 778 mm x W 450 mm. With stand: H 1810 mm x W 667 mm x L 570 mm. |
| Inlet & Outlet Ports | 1 inch BSP inlet and outlet ports. |
| Gauge, Bleed & Sampling Ports | 1/4 inch BSP ports. |
| Seals | Viton lid O-ring and nitrile rubber element seals. |
| Pump & Motor | Gear pump with 40 litres per minute flow rate, fitted to a 0.75 kW motor, 380V / 525V, Class F insulation. |
| Pipework | 22 mm steel piping with crimped non-leak fittings. |
| Pressure Gauge | 0 to 10 bar glycerine-filled gauge with 63 mm face and 1/4 inch BSP connection. |
|---|---|
| Pressure Transmitter | Optional Huba Control 520-series relative pressure transmitter, -1 to 9 bar, 4–20 mA output, IP67 rating. |
| Pressure Tested | Hydraulic pressure tested to 16 bar maximum. |
| Maximum Operating Pressure | 8 bar maximum operating pressure. |
| Best Operating Pressure | 1 to 4 bar for optimum performance. |
| Recommended Oil Temperature | 40°C to 55°C for best filter performance. |
| Operating Philosophy | Run continuously and only shut down for element maintenance or filter changes. |
Installation Layout
Bypass filtration without interrupting normal lubrication flow
The F8-Series is installed directly to the tank or reservoir as a bypass filtration unit. Oil is removed from the lowest part of the tank and returned in a circulating motion. This allows the system to continuously polish the oil while the main lubrication system continues operating.
Lowest-tank suction point
Return to reservoir
1 micron desiccant breather compatible
PLC / SCADA pressure monitoring optional
Example F8-Series bypass installation layout for a crusher lubricating tank.
How The System Works
Continuous contamination control in four practical steps
Draw Oil
The onboard pump draws oil from the drain or low point of the tank where water and contaminants often settle.
Filter & Polish
Oil passes through radial depth micro fine filtration elements designed for dirt-holding capacity and polishing.
Return Oil
Conditioned oil is returned to the reservoir in a circulating motion to support continuous oil cleanliness.
Monitor Pressure
Pressure readings help maintenance teams identify filter loading, cold oil conditions or contamination events.
PLC / SCADA Ready
Suggested pressure alarm parameters
Where the optional pressure transmitter is installed, the 4–20 mA output can be hard-wired to a PLC or SCADA system.
| High High Setting | 7.1 bar and above — alarm and turn off filter pump. |
|---|---|
| High Setting | 5.6 to 7 bar — alarm and maintain elements. |
| Normal Setting | 1 to 5.5 bar — normal operating range, no alarm. |
| Low Setting | 0.3 to 0.9 bar — alarm and determine the problem. |
| Low Low Setting | -1 to 0.2 bar — alarm and determine the problem. |
Technical note: Oil temperature and viscosity directly affect operating filter pressure.
Cold oil, water contamination and heavy particulate loading can increase system pressure.
Maintenance & Consumables
Practical service planning for continuous filtration
Regular service planning helps maintain filtration performance, control element loading and prevent unnecessary downtime.
Filter Elements
Elements are constructed using a steel perforated inner, micro mesh, cotton winding, anti-glaze layers and micro multi-stage polishing media.
Recommended Stock
Keep at least two complete element sets in stock for each micro fine filtration system to prevent unnecessary maintenance delays.
Service Frequency
Regular monthly filter services are recommended for best performance, with change-out schedules confirmed by contamination levels and operating pressure.
| ISO-FE20-CMK8 | Cotton core multi-stage polishing element kit, 8 elements. |
|---|---|
| ISO-P-P25 | Gear pump with bell housing and mechanical seal. |
| ISO-B10-SSG | Breather service pack with silica gel and 1 micron sediment filter. |
Troubleshooting Overview
Fast checks for common operating conditions
High Filter Pressure
Possible causes include oil below 40°C, water in the oil or heavy particulate contamination. Allow oil to reach operating temperature and service elements where required.
Low Outlet Flow
Check oil levels, inspect for air or oil leakage from the gear pump seals, and release trapped air using the bleed screw.
Abnormal Pump Noise
Check inlet valve position, oil temperature, trapped air, filter pressure and element condition. Persistent noise should be reported for technical assistance.
The ISO Reliability Advantage
Protect oil, protect components, protect production
Micro fine filtration supports a proactive reliability strategy by targeting contamination before it becomes component wear, unplanned downtime or premature oil replacement.
Extend Component Life
Protect pumps, bearings, gears, liners and other lubricated components from contamination-driven wear.
Reduce Oil Consumption
Support longer lubricant life by controlling water and particulate contamination.
Improve Availability
Cleaner systems contribute to better machine reliability and reduced failure risk.
Lower Operating Cost
Reduce maintenance waste, oil replacement costs and contamination-related repairs.
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FAQ
ISO F8-Series frequently asked questions
What is the ISO F8-Series used for?
The ISO F8-Series is used for offline or bypass oil filtration and conditioning in industrial applications such as gearboxes, crushers, ball mills, hydraulic systems, turbines, diesel systems and lubricating systems.
Does the F8-Series interfere with the main lubrication system?
No. The F8-Series operates as a standalone bypass system with its own pump. It draws oil from the tank, filters it and returns it to the reservoir without interrupting the normal lubrication flow.
What is the best operating pressure for the F8-Series?
The recommended best operating pressure range is 1 to 4 bar. The maximum operating pressure is 8 bar.
What oil temperature is recommended for best performance?
The recommended oil temperature for best filter performance is between 40°C and 55°C. Oil temperature and viscosity have a direct effect on filter pressure.
How often should the filter elements be serviced?
Regular monthly filter services are recommended. Actual filter element life depends on contamination ingress through seals, leaks and internal wear generation.
Which spare parts should be kept in stock?
It is recommended that at least two complete element sets are held in stock for each micro fine filtration system. Common spare items include the cotton core multi-stage polishing element kit, gear pump assembly and breather service pack.
Need cleaner oil and higher machine reliability?
Speak to ISO-Reliability Partners about applying the F8-Series to your gearbox, crusher, hydraulic system, turbine lubrication system or high-contamination industrial oil circuit.
ISO-Reliability Partners
+27 10 449 6414
info@iiso.co.za
www.iiso.co.za
MotorCity C7-C8, Germiston, South Africa