374-1855 374-1856 Bucket Stick Arm Hydraulic Cylinder Assy for CAT 307E 307D 307C Excavator

374-1855 374-1856 Bucket Stick Arm Hydraulic Cylinder Assy for CAT 307E 307D 307C Excavator

Glparts places great emphasis on the design and machining of seal grooves. All hydraulic components and sealing elements are manufactured with strict requirements for dimensional tolerances, surface treatment, surface finish, and geometric accuracy to ensure optimal performance and reliability.

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Features

1. Dual-lip Dust Wiper: Effectively blocks gas and particle intrusion, minimizing hydraulic oil contamination.

2. High-performance Seal Material: Polyurethane + PTFE composite seals offer excellent wear resistance and anti-cavitation performance, extending seal life.

3. Piston Rod Heat Treatment: Fully quenched and tempered for enhanced tensile strength and fatigue resistance.

4. Surface Hard Chromium Plating: The rod is coated with a 30μm hard chrome layer, achieving surface hardness above HRC 55, providing superior corrosion and scratch resistance.