PVD-0B

Nachi PVD-0B — variable displacement axial piston pump 24 cm³

Nachi PVD-0B is a split-flow variable displacement axial piston hydraulic pump of the PVD series. It generates two equal independent flows from two sections within a single housing, ensuring synchronous supply to the left and right travel motors and guaranteeing straight-line travel of the crawler undercarriage without operator correction. The next frame size in the series after PVD-00B, designed for mini excavators in the 2–2.5 tonne class. Variants within the frame size (PVD-0B-18, PVD-0B-19, PVD-0B-21, PVD-0B-24) differ in displacement while sharing the same rotary group and housing.

Full model range in the section Nachi PVD series

Technical specifications PVD-0B

• Displacement (max.): 12×2 = 24 cm³/rev
• Section configuration: 12+12+6.4+2.7 cm³/rev
• Max. pressure: 245 bar
• Max. speed: 2800 rpm
• Nominal speed: 2600 rpm
• Min. speed: 900 rpm
• Shaft: Z=13, centring 101.6 mm
• Mounting flange: SAE B 2-bolt
• Weight: 13 kg

PVD-0B model code structure

Example: PVD-0B-18P-6G3-4191A

• PVD — split-flow piston pump
• 0B — frame size (second largest, max. 24 cm³/rev)
• 18 / 19 / 21 / 24 — maximum total displacement, cm³/rev
• P — right-hand rotation; L — left-hand rotation; CP — port/compensator variant
• 6G3 / 8G3 — configuration code (6G3 = gear sections 6.4+2.7 cm³/rev)
• 4191A / 4694A / 5236B — serial specification suffix

Installed in equipment

• JCB

  • Mini excavator
• Kubota

  • U20 — Mini excavator
  • U20-5 — Mini excavator

OEM numbers PVD-0B

• Nachi

  • PVD-0B-17P
  • PVD-0B-18P-6G3-4191A
  • PVD-0B-18P-6G3
  • PVD-0B-19P
  • PVD-0B-19L
  • PVD-0B-20BP
  • PVD-0B-21P-6G3-4694A
  • PVD-0B-24P-6G3-4191A
  • PVD-0B-24P-6G3
  • PVD-0B-24P-8G3-5236B
  • PVD-0B-24CP

Spare parts for Nachi PVD-0B

• Cylinder block Rotor
• Drive Shaft
• Separation Bush
• Ball guide
• Disk Spring
• Snap Ring
• Slider
• Coupling of drive shaft
• Cylinder block press pin
• Charge Pump
• Roller Bearing
• Cradle Bearing Set
• Retainer Plate
• Swash plate (cam rocker)
• Piston shoe
• Rotor Spring
• Seal kit pump
• Shaft Seal
• Wire
• Valve plate
• Ball guide washer
• Pressure Override Valve
• Control Valve Regulator
• Regulator assembly
• Servo Piston

Repair and service PVD-0B

Diagnostics and repair of pump Nachi PVD-0B: monitoring operating pressure and leaks, inspection of the piston group and valve plate, and bench testing after repair.

Contact us — we will repair pump PVD-0B and select genuine spare parts.

Spare Parts Diagram Nachi PVD-0B-18

Spare Parts Diagram