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Q&A Introduction to Kayaba (KYB) PSVD2 Series Hydraulic Main Pumps
Q: What is this product?
A: It is a variable displacement axial piston hydraulic main pump assembly manufactured by Japan Kayaba (KYB). It covers models including PSVD2-17E, 21, 23, 26E, and 27E, serving as the core power component for mini excavators. Displacement and flow are controlled by adjusting the swash plate angle. It fits mini excavators from brands such as Yanmar, Kubota, and IHI.
Q: What are the main models?
A:
- PSVD2-17E: Fits Yanmar VIO35/40/45/50 mini excavators; some versions are equipped with solenoid valves (e.g., -12 version).
- PSVD2-21: Basic model for small construction machinery, corresponding OEM part number: B0600-21030.
- PSVD2-23: Derived from PSVD2-17E, fits Yanmar VIO40/45/50/55.
- PSVD2-26E: Medium-displacement model for higher working flow demand.
- PSVD2-27E/27E-12: Mainstream model, fits Yanmar 60, Kubota 60, IHI 60, Komatsu PC30-7, etc. Some versions have solenoid valves (e.g., -4, -12 versions), corresponding OEM part number: B0600-27005.
Q: What are the core technical specifications?
A:
表格
| Model | Structure Type | Displacement (cc/rev) | Rated Flow (L/min) | Max Pressure (bar) | Speed Range (rpm) | Suitable Ton Range |
|---|---|---|---|---|---|---|
| PSVD2-17E/23 | Variable piston pump + fixed gear pump | Approx. 17–19 | Approx. 35–42 | 245 | 1500–2500 | 3.5–5 tons |
| PSVD2-21 | Variable piston pump + fixed gear pump | Approx. 21 | Approx. 45–50 | 245 | 1500–2500 | 4–5.5 tons |
| PSVD2-26E | Variable piston pump + fixed gear pump | Approx. 26 | Approx. 55–60 | 245 | 1500–2500 | 5–6 tons |
| PSVD2-27E | Dual variable piston pumps + dual fixed gear pumps | Dual pumps approx. 26.9×2 | Approx. 59.2 (total dual pumps) | 245 | 1500–2500 | 5–6 tons |
