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Product details

KYB PSVD2-17E/21E Pilot Gear Pump

1. Product Overview

This Original KYB Pilot Gear Pump is the auxiliary pilot hydraulic component matched with KYB PSVD2 main pump series. It is factory installed on mini & small excavators equipped with PSVD2-17E and PSVD2-21E main piston pumps. As an integrated pilot charge pump, it provides stable control pressure for the excavator’s main control valve, travel and swing hydraulic system. Widely used for mini excavator hydraulic control circuits, featuring compact structure, steady output pressure and long service life.

2. Model Definition

- PSVD2: Matching main pump series designation

- 17E / 21E: Matched main pump displacement specification

- Pilot Gear Pump: Integrated pilot pump mounted on the rear of main piston pump

3. Core Technical Specifications

Parameter Specification

Pump Type External Pilot Gear Pump (Integrated with Main Pump)

Brand KYB (Kayaba)

Applicable Main Pump PSVD2-17E, PSVD2-21E Main Piston Pump

Function Supply pilot control pressure for operating valve & hydraulic actuators

Rated Pilot Output Pressure 3.0 ~ 3.5 MPa

Rotation Direction Same rotation as matched PSVD2 main pump

Installation Method Rear flange integrated assembly of main hydraulic pump

Hydraulic Medium Anti-wear hydraulic oil ISO VG32 / VG46

Operating Temperature -20℃ ~ +80℃

Version Original OEM KYB unit / High-quality aftermarket replacement available

4. Key Advantages

1. Original KYB standard size, fully interchangeable with old damaged pilot pumps without modification.

2. Low pulsation pilot pressure output, ensures smooth operation of excavator control handles.

3. Optimized gear and bushing structure, low internal leakage, wear-resistant and long service span.

4. Integrated compact layout, saves internal engine compartment space of small excavators.

5. Stable pilot pressure prevents slow action, drifting and operation failure of excavator.

6. Direct bolt-on assembly, convenient on-site maintenance and replacement.

5. Typical Applications

Mini excavators fitted with KYB PSVD2-17E and PSVD2-21E main pumps, small crawler diggers, small trenchers. Supplies pilot oil for multi-way valve, travel motor and swing motor control.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

Audited supplier

4 year

Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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