TGA6062 Engine Air Filter (Kaeser 635400 Equivalent) for Kaeser M70 Screw Compressor

1. Purpose and Operating Principle

The filter is installed in the air intake housing, at the entry point into the screw airend, and performs three functions:

• traps dust, sand, and other abrasive particles from atmospheric air before it reaches the compressor’s screw rotors;
• protects the airend rotors from premature wear and extends the service life of the downstream oil filter and separator element;
• ensures stable intake airflow without excessive pressure drop as long as the element is in good technical condition.

2. Technical Specifications

3. Design Features

1. Italian manufacturing by TGfilter. The brand specializes in filtration elements for industrial compressor equipment, confirmed by a wide range of similar models (TGO511, 3160245HPC, and others).
2. Pleated filter media. Increases effective filtration area within compact housing dimensions, ensuring a long service life between replacements.
3. Closed conical end (D=0). One end of the element is fully closed — air passes exclusively through the pleated side surface, eliminating unfiltered air bypass through the end.
4. Radial seal on the open end (B=85 mm, H2=25 mm, H2+=10 mm). The inner diameter of the mounting seat fits tightly onto the intake housing’s neck, ensuring a leak-free connection without additional gaskets.
5. Type P end cap. The molded plastic/polyurethane cap provides structural rigidity and protects the edge of the filter media from mechanical damage during installation.

4. Installation Recommendations

• Check element orientation before installation — the closed conical end (D=0) must face into the intake housing, while the open end with the radial seal (B=85 mm) fits onto the mounting neck.
• Install the element without tilting, pushing it evenly onto the neck until the radial seal is fully seated — installing at an angle compromises the seal and allows unfiltered air to bypass the filter media.
• Do not apply excessive force during installation — deforming the pleated filter media reduces its effective surface area and service life.
• Check the condition of the intake housing seat gasket before installing a new element — a damaged housing gasket defeats the seal even with a good filter.
• Use a clogging indicator (vacuum gauge/pressure drop indicator), if provided by the compressor design, to monitor element condition rather than relying on visual inspection alone.
• After installation, check that the intake housing cover fits tightly — a loosely closed cover defeats the filtration effect.

5. Analogues and Comparison

The TGA6062 is a direct equivalent of the original Kaeser 635400 air filter, used on the intake of Kaeser M70 series screw compressors. In connection dimensions (A145/B85/H330, radial seal H2=25/H2+=10) and functionality, the element is fully interchangeable with the Kaeser original.

Besides the Kaeser original, the TGA6062 is comparable in size to air filters from other manufacturers, including Mann Filter, Donaldson, Fleetguard, and Baldwin lines.

When selecting an equivalent, always verify:

• the original Kaeser 635400 part number — the primary reference for a fast and accurate replacement;
• outer and inner diameters (A/B), height (H), and radial seal parameters (H2/H2+) — a mismatch in any parameter prevents a leak-free installation;
• end cap type and sealing material — affects compatibility with your specific intake housing’s mounting neck;
• filtration class/retention efficiency, if the compressor operates in high-dust conditions.

If you are selecting a replacement for a specific compressor serial number, send us the markings from the removed element — we’ll verify compatibility before shipping.

6. Common Installation Mistakes

• Installing the element upside down — a closed end where the open end should be makes leak-free mounting on the neck impossible.
• Tilting during installation on the mounting neck — compromises the radial seal and allows dust to bypass the filter media, defeating the purpose of the replacement.
• Ignoring the condition of the intake housing gasket — a common cause of “a new filter that doesn’t help.”
• Extending element service life “by eye” without a clogging indicator — leads either to premature replacement of a good element or to operating the compressor with an excessively dirty filter and reduced performance.
• Mechanical damage to the pleated media during careless installation — even a small tear in the material eliminates filtration efficiency at that point.

7. Practical Applications

TGA series air filters are used in the following areas:

• Industrial compressor stations — on Kaeser screw airends and compatible models.
• Construction sites and quarries — compressor equipment operated in high-dust conditions.
• Woodworking and metalworking production — stationary compressor installations.
• Compressor equipment service centers — as a consumable for scheduled maintenance.
• Mobile compressor stations — with a matching mounting neck size.

8. Expert Opinion

Vitali Boluchevski, Lead Engineer at Acvatron SRL (18 years of experience):

“The air filter is the airend’s first line of defense, and cutting corners on timely replacement always costs more in rotor and bearing wear. The TGA6062 is a solid alternative to the original Kaeser 635400: the pleated media holds up well under our climate’s seasonal dust levels. The most important thing during installation is not to tilt the element when fitting it onto the neck — even a small gap in the radial seal defeats the entire filtration, and abrasive dust goes straight into the screw rotors. I recommend that compressors operating on construction sites or in dusty workshops be fitted with a clogging indicator — it’s far more reliable than visual inspection.”

9. Frequently Asked Questions

1. Which original Kaeser part number does the TGA6062 correspond to? The TGA6062 (packaging marking AIR-FILTER-TGA-6062) is the equivalent of the original Kaeser 635400 air filter, used on the intake of Kaeser M70 series compressors.

2. Does this filter fit my specific Kaeser M70 model? If you already have a filter marked 635400 installed, the TGA6062 fits directly. If in doubt, send us the markings from the removed element or the compressor’s serial number — we’ll confirm the exact match before you order.

3. How often should the air filter be replaced? ⚠️ The exact interval depends on dust levels in the air at the compressor’s operating location — we recommend following the readings of a clogging indicator (vacuum gauge), if installed, or the compressor manufacturer’s schedule. Contact us to determine the recommended interval for your operating conditions.

4. Can the air filter be blown out and reused instead of replaced? A brief blow-out with compressed air from the inside out is acceptable for paper elements with light contamination, but it does not replace scheduled replacement — repeated blow-outs gradually damage the filter media’s structure and reduce retention efficiency.

5. How should the filter be oriented during installation? The closed conical end (D=0) must face into the intake housing, while the open end with the radial seal (B=85 mm) must be seated tightly, without tilting, onto the mounting neck.

6. What happens if the filter is installed at an angle or not fully seated? The radial seal is compromised, and unfiltered air with abrasive particles will reach the screw airend, bypassing the filter media — this effectively negates the point of replacing the filter.

7. Is the TGA6062 compatible with compressors from other brands? Yes, if the connection dimensions (A/B/H, seal parameters H2/H2+) match your intake housing’s mounting neck. We recommend checking the markings on the removed element before ordering.