1915560 Complete Piston

19.15.560 Guascor SFGLD, SFGM & HGM Piston Kit

The piston kit is suitable for Guascor SFGLD,560, SFGM560 & HGMI560 gas engines.

Detailed content of 1915560 complete piston set:

Guascor HGM complete piston kit with part number 1915560 is a crucial component for maintaining the optimal performance and longevity of Guascor HGM engines. This kit is a precisely engineered assembly of parts, each playing a vital role in the engine's combustion process and overall reliability. It includes the 1915065 HGM Piston, the 1915280 Piston Ring Set, the 1615084 Piston Shaft (Pin), and the 7415066 Circlips.

The Guascor HGM Piston: Design and Quality

The 1915065 piston is the heart of this kit.

A notable and innovative feature of this piston is its distinctive "flower" shape combustion bowl. This unique design is not merely aesthetic; it is a critical engineering element that plays a significant role in engine performance. This specific geometry optimizes the flow imrpving turbulance and mixing. The shape of the combustion bowl creates turbulence and swirl within the cylinder. As the piston moves up, it compresses the air and forces it into this bowl. This movement creates a high degree of turbulence, which helps to thoroughly mix the injected fuel with the compressed air. This is crucial for efficient and complete combustion. Better mixing leads to higher power output, reduced emissions, and improved fuel economy.

he bowl shape also helps to guide the flame front during combustion. By concentrating the air-fuel mixture in a specific area, the flame can spread outward more uniformly and quickly. This controlled flame propagation helps to prevent knocking or detonation, which can severely damage an engine.

The piston crown's shape is part of the combustion chamber. In many modern engines, the top of the piston is not flat but has a specially designed bowl, often referred to as a "combustion bowl" or "combustion chamber bowl." This shape is meticulously designed to optimize the combustion process by controlling how the fuel and air mix as the piston approaches the top of its stroke.

To manage the immense heat generated during operation, the pistons are actively cooled. A dedicated oil cooling jet sprays lubricating oil onto the underside of the piston. This oil, sourced from a specific, regulated-pressure gallery, either sprays directly onto the base or circulates through an internal gallery within the piston itself. This cooling method is essential for preventing thermal stress and extending the life of the piston and other engine components.

The Piston Ring Set 1915280

The 1915280 piston ring set consists of three rings, each with a specific function:

1. Compression Ring: This is a chrome-plated rectangular ring on a piston ring carrier. Its primary function is to form a tight seal against the cylinder wall, preventing combustion gases from escaping past the piston. This ensures maximum compression and power.
2. Scraper Ring: Positioned below the compression ring, the scraper ring's job is to scrape excess oil from the cylinder walls during the piston's downward stroke, preventing it from entering the combustion chamber.
3. Greasing Ring: Also known as the oil control ring, this ring is designed to distribute a thin, lubricating film of oil evenly on the cylinder wall while also collecting and returning excess oil to the sump.

Technical Details: Clearance and Limits

The following table provides crucial technical specifications for the piston and its rings, outlining the clearances and tolerances required for proper function and engine health. Adhering to these specifications is vital during service and maintenance.

Clearance and Limits in Piston and Piston Segments

Maintenance and Service Intervals

Proper maintenance is paramount for the long-term health of a Guascor engine. The piston kit components are subject to specific replacement schedules:

• Piston rings should be inspected and changed, if necessary, during the R2 service cycle at 20,000 operating hours.
• The piston itself should be changed at the R3 service cycle at 30,000 operating hours.

These service intervals are general guidelines and may need to be adjusted based on the type of fuel used and the engine's operating load. Adhering to these schedules and ensuring the replacement of pistons and corresponding rings (part number 1915280) is utmost important to keep engine performance at its peak and prevent major engine failure. Ignoring these service requirements can lead to loss of compression, increased oil consumption, and catastrophic damage to the engine's internal components.

This piston kit is also available in OEM version. The OEM piston is manufactured my Mahle and we have direct access from the factory.

Mahle is a major supplier of pistons for Guascor engines, and the quality of their industrial pistons is highly regarded in the industry. The 1915560 piston kit, for example, is used in Guascor HGM560 and SFGM560 gas engines and is manufactured by Mahle, the OEM (Original Equipment Manufacturer) for the part.

Mahle is a leading international development partner and supplier to the automotive industry. They specialize in components and systems for internal combustion engines and engine peripherals. Their extensive experience and focus on research and development contribute to the high-quality standards of their products, which are crucial for the demanding environment of industrial engines.

The quality of a piston is critical for engine performance and longevity. Pistons must withstand extreme heat, pressure, and mechanical stress. The materials and manufacturing processes used by Mahle are designed to meet these challenges, ensuring reliability and durability. Their pistons are engineered to precise specifications, which is essential for the smooth operation of high-performance engines like those from Guascor. This relationship highlights how Guascor relies on established, high-quality component manufacturers like Mahle to produce reliable and efficient engines.

* - The below picture is only illsuration. The SFGM560 & HGMI560 piston looks different. If doubt please contact us.

 visit piston selection guide

Verified 2025 August

поршень Гуаскор SFGLD560