Ap2d28 Pilot Pump Hydraulic Gear Pump with Single Oil Pipe high displacement gear pump excavator

AP2D28 is a matched charge‑pilot gear pump for AP2D28 main piston pump, widely used on 5‑6‑ton mini excavators. It supplies stable pilot pressure for control valves and replenishes hydraulic oil for main pump circuit. Precision 10‑tooth spline ensures perfect connection with main pump shaft. Optimized internal gear structure reduces leakage. OEM‑identical mounting allows direct replacement for Doosan, Hyundai and Volvo compact excavators.

Product Parameters

AP2D28 Pilot Pump Application

This pilot charge pump serves multiple 5‑6‑ton compact excavator models. It delivers steady pilot pressure for joystick manipulation and supplements oil flow for main pump loop during digging and trenching. Perfect interchangeability supports fast on‑site replacement, maintaining responsive control performance in dusty construction sites.

Company Profile

Runhe Hydraulics focuses on manufacturing robust hydraulic spare parts for excavators. Our hydraulic cylinders, motors and pumps boast stable operation and precise stroke execution. A complete product range ensures seamless substitution for mainstream original component standards. We accommodate OEM customization, offer global delivery and professional after‑sales care to serve heavy‑machinery clients across the globe with trustworthy hydraulic system solutions.