KIMAIR K Series Oil Filters

The K Series oil filter is a core protective component specifically designed for the lubrication system of oil-injected screw air compressors. It contains a high-precision filter element that removes impurities, wear metal particles, and some gelatinous substances generated during lubricating oil circulation, maintaining oil cleanliness and effectively protecting the airend bearings, gears, and rotors, ensuring efficient, smooth, and long-life operation. Regular oil filter replacement is one of the most important maintenance tasks for oil-injected screw air compressors.

Category：

Air Compressor Maintenance & Service Solutions

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Video Tutorial

KIMAIR K Series Oil Filters Principle Explanation Video

KIMAIR Core Advantages

High-Efficiency Deep Filtration

- Uses specially treated filter paper or composite materials, with high filtration accuracy (typically 10-15 microns), effectively capturing fine particles to ensure clean lubricating oil.
High Dirt-Holding Capacity

- Optimized filter media structure and pleats provide larger effective filtration area, extending replacement intervals.
Reliable Structural Sealing

- Robust metal housing, with seals made of oil-resistant and high-temperature-resistant materials to ensure no leakage under high pressure and high temperature in the oil circuit.
Built-in Bypass Valve Protection

- When the filter element becomes clogged and differential pressure rises too high, the bypass valve automatically opens to ensure continuous lubricating oil supply, protecting the airend (though filtration effectiveness is lost at this point, requiring immediate replacement).
Easy Replacement

- Standard spin-on design, compatible with special tools for quick and safe replacement.

Technical Specifications

Parameter	Description
Applicable Models	Corresponding KIMAIR oil-injected screw air compressor models
Filtration Accuracy	Typically 10μm or 15μm
Initial Differential Pressure	≤0.25 bar
Replacement Differential Pressure	Typically 1.8 bar (or per maintenance schedule)
Sealing Material	Oil-resistant NBR or FKM
Installation Type	Spin-on

Application Scenarios

- Routine maintenance of all KIMAIR oil-injected screw air compressors (SI, SV, PS, portable units, skid-mounted units, etc.)

- After compressor overhaul or oil change, a new oil filter must be replaced simultaneously

- In harsh, dusty conditions, replacement intervals should be shortened accordingly

Customer Frequently Asked Questions (FAQ)

Q: How often should the oil filter be replaced?

A: The replacement interval is mainly based on operating hours, typically 2,000 hours. Refer to your equipment’s maintenance manual for details. If the equipment is equipped with an oil filter differential pressure alarm, replace immediately when triggered. In harsh or dusty environments, the interval should be shortened.

Q: What are the consequences of not replacing the oil filter on time?

A: The consequences are severe:

1) Filtration failure: dirty oil circulates directly, accelerating airend wear;

2) Oil circuit blockage: leads to insufficient oil supply, causing high airend temperature or even seizure;

3) Bypass valve opens: unfiltered oil enters the airend directly, losing protection. This will significantly shorten airend life and lead to costly repairs.

Q: What should be noted when replacing the oil filter?

A: Key steps:

1) Stop the machine and relieve pressure;

2) Place an oil collection pan under the oil filter;

3) Use a special tool to unscrew the old filter element;

4) Apply a small amount of new lubricating oil to the seal ring of the new filter element;

5) Hand-tighten until the seal ring contacts the base, then tighten 3/4 turn with a tool (refer to the manual);

6) Check for oil leakage after startup.

Why Choose KIMAIR Genuine Oil Filter?

- Precisely matched protection: specifically designed for the oil circuit pressure and flow of each KIMAIR air compressor, ensuring optimal filtration efficiency and flow capacity

- Quality equivalent to airend: manufactured and tested to the same strict standards as the airend, an officially designated component to guarantee airend service life

- Avoid compatibility risks: non-genuine filters may have mismatched filtration accuracy, pressure resistance, bypass valve opening pressure, etc., risking damage to the airend

- Integrity of maintenance records: using genuine parts is an important prerequisite for fulfilling equipment maintenance contracts and enjoying subsequent warranty services