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Bottom Rollers Air Pressure Leak Testing
Jul 25,2025
In the manufacturing of crawler crane undercarriage components, ensuring the sealing performance of bottom rollers is essential for product reliability and longevity. At Yantai Evergrowing, each assembled bottom roller undergoes a critical air pressure and water immersion test. This can verify structural integrity and airtightness before shipment.
The testing process begins by injecting compressed air into the internal chamber of the assembled bottom roller. The component is then fully submerged in water. If air bubbles are observed escaping from any part of the roller, it indicates a leak—typically caused by welding defects, casting flaws, or improper oil seal installation. These issues, if left undetected, could lead to serious failures such as lubricant loss, water ingress, and accelerated internal wear during crane operation.
This leak test serves several functions. First, it confirms that all weld seams are free from porosity or cracks. Second, it validates the correct installation and positioning of oil seals. Third, it simulates the roller’s ability to withstand pressure during real-world working conditions, especially under high loads, frequent track movements, and prolonged environmental exposure.
Air pressure testing combined with water immersion is a standard practice in heavy equipment manufacturing due to its accuracy and simplicity. It provides a visual, immediate indication of seal integrity, making it ideal for high-precision quality control environments.
Yantai Evergrowing adopts this process as part of its strict quality assurance protocol for all crawler crane bottom rollers. By catching potential seal failures at the factory level, the company ensures greater durability, lower maintenance costs, and safer operation for its global customers.
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YANTAI EVERGROWING IMPORT AND EXPORT CO., LTD.
ADD: A508, NO 133-1 YINGCHUN ROAD, LAISHAN DISTRICT, YANTAI CITY, CHINA
ZIP CODE: 264003
TEL: +86-535-6724921
FAX: +86-535-6724922
EMAIL: info@crawlercranesparts.com