Core Features
Power On/Off Control: Precise piston reciprocating stroke (error ≤0.1mm), working pressure 32–38MPa, response time ≤0.3s, driving the clutch friction plate assembly to engage/disengage, achieving precise power on/off, adapting to the speed switching and parking braking requirements of graders.
Steering Differential Coordination: Coordinates with the steering clutch to achieve power distribution and differential compensation between the left and right wheels, with a steering radius error ≤±5%, ensuring smooth steering and improving operating accuracy.
Sealing and Leakage Prevention: Employs a double lip seal + one dust seal structure, with static leakage ≤0.03mL/min and dynamic leakage ≤0.1mL/min, suitable for wide temperature operating environments from -40℃ to +100℃, preventing hydraulic oil leakage.
Buffering, Shock Absorption, and Noise Reduction: A buffer groove on the piston head can attenuate instantaneous impact loads by ≥30%, reducing clutch engagement noise by ≤78dB, protecting the friction plates and transmission components.
Wear-resistant and corrosion-resistant: The surface is anodized, with a hardness of HV≥350 and a corrosion resistance grade ≥GB/T 10125 Grade 9, making it suitable for harsh working conditions of engineering machinery and extending its service life.
Application Scenarios and Usage Recommendations
Application scenario: Designed for Komatsu GD series graders' rear axle and steering clutch, this system handles heavy-duty, high-turning operations in mining, infrastructure, and road maintenance, serving as the core component for power switching and steering differential control.
Usage tips
Before installation, clean the piston surface and cylinder, check the seals for damage and deformation, apply hydraulic oil for lubrication, and then install. Tighten the bolts evenly (torque according to original manufacturer specifications).
Check the hydraulic oil level and quality every 1000 hours. When changing the oil, simultaneously check the piston seal condition; replace the seals immediately if any abnormalities are found.
Avoid prolonged overload operation to prevent piston deformation and seal failure, thus extending the overall lifespan of the clutch and transmission system.
Summarize
The 23B-15-12750 piston, with its advantages of original factory compatibility, high strength and fatigue resistance, high sealing and leakage prevention, low friction and high efficiency, provides stable and efficient power on/off and steering differential control for Komatsu GD series graders. It is suitable for harsh working conditions, improves the grader's operating accuracy and equipment uptime, and is a key actuator for reducing maintenance costs.
