Case Study: Hydraulic Cylinder Customization for SOGMA Wheel Excavators

Client: SOGMA Heavy Machinery (specializing in wheeled excavators for urban construction and agricultural projects)

Supplier: Wuxi Shibang Machinery Manufacture Co., Ltd (a leading Wuxi-based hydraulic cylinder manufacturer with 20 years of OEM/ODM experience in construction machinery)

Challenge
SOGMA required customized hydraulic cylinders for its 8-ton wheel excavator (shown in the image)—off-the-shelf models failed to meet the machine’s unique operational demands:
Continuous operation at 35 MPa pressure to manage heavy digging tasks in confined urban construction sites;
Enhanced corrosion resistance for frequent use in humid agricultural environments;
Compact design to fit within the excavator’s narrow boom without sacrificing lifting capacity.

Solution
Wuxi Shibang provided comprehensive custom hydraulic cylinder solutions:
Optimized bore/stroke ratio (100 mm / 800 mm) to balance power output and spatial efficiency for the boom;
Utilized 4140 high-strength steel (with hard chrome plating) for piston rods and premium imported seals to improve corrosion resistance and service life;
Performed 1.5x pressure testing (52.5 MPa) and 5,000-cycle durability tests to verify performance under extreme conditions.

Outcome
The customized cylinders reduced SOGMA’s excavator downtime by 30% compared to previous generic components;
The components achieved a 12-month field service life, surpassing SOGMA’s initial 8-month durability target;
Wuxi Shibang is now SOGMA’s exclusive hydraulic cylinder supplier, providing ongoing support for separate spare parts procurement (individual components available for maintenance and replacement).