100% Compatible AP2D28 Double Tube Pilot Pump For Mining Work
Pilot Pump Introduction
The AP2D28 dual-port pilot pump is a gear-type auxiliary pump primarily used in the hydraulic systems of mini excavators. It works in conjunction with the main piston pump to provide a stable low-pressure pilot control circuit. Featuring a dual-port design, it is compact, reliable, and originally part of the Uchida/Rexroth series. Now, it is mostly produced as a high-quality compatible component and is widely used in 5-8 ton excavators, such as the DH55/DH60, R55/R60, EC55/EC60, and EX60 models. It is a common core component in the hydraulic systems of mini excavators.
This series covers the essential needs of hydraulic pilot control with practical, field-proven solutions. It offers a balanced combination of size, performance, and serviceability that suits both new machine designs and replacement applications in existing fleets.
Hebei Runhe Hydraulic Machinery Co., Ltd. is a trusted hydraulic system provider with 12+ years of expertise. It focuses on R&D, manufacturing and sales, with products used in printing machinery, port ships and more. It provides non-standard customization and follows strict quality control.
Pilot Pump Parameters
|
Model
|
Nominal displacement (mL/r)
|
Pressure(Mpa)
|
Speed(r/min)
|
Volumetric
Efficiency
(≥%)
|
Weight
(kg)
|
|
Rated
|
Pull
|
Optimun speed
|
Speed range
|
|
AP2D28
|
16/4.5
|
20/5
|
25/8
|
1500~2500
|
600~3000
|
92
|
6.3
|
|
Involute spline spec.
|
|
Teeth
|
10
|
|
D.P
|
16/32
|
|
Pressure Angle
|
30°
|
|
Major Circle
|
ϕ17(Up: 0 Down: -0.13)
|
|
Minor Circle
|
ϕ13.8
|
Package
Normally, it is packaged in cardboard boxes and then shipped on pallets or wooden crates. Special requirements from customers can be discussed and negotiated.
FAQ
Q: Can this pilot pump directly replace the original?
A: Yes, the high-quality compatible pilot pump has the same installation dimensions and performance parameters as the original, and can be directly replaced without modifying the piping.
Q: What is the warranty period?
A: We offer a one-year warranty. During the warranty period, if the malfunction is caused by a quality issue with the product's original manufacturer, we will repair or replace it free of charge.
Q: I couldn't find my model. Can I still use it?
A: We recommend providing your excavator's specific model number, a photo of the main pump, or the original pump's nameplate information. We can help you confirm compatibility free of charge.
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