DP31 Medium‑High Pressure Vane Pump
Product Overview
DP31 Medium‑High Pressure Vane Pump is a fixed‑displacement double Hydraulic Vane pump. This compact‑sized hydraulic pump combines DP3 frame and DP1 frame, delivering two independent flow outputs for medium‑high pressure industrial hydraulic system and multi‑action automated Machine.
Adopting mature balanced vane structure, this double Hydraulic Vane pump features low pressure pulsation and quiet running performance. Two separate pumping chambers can supply oil for different hydraulic circuits simultaneously. It supports replaceable DP series cartridge kit for convenient on‑site maintenance without full pump disassembly. Compact overall dimension makes it ideal for equipment with limited installation space. It is widely used for machine tools, small‑size injection auxiliary equipment and light‑duty hydraulic presses as stable power source for the whole hydraulic system.
Technical Specifications
‑ Model: DP31 Medium‑High Pressure Vane Pump
‑ Product Type: Fixed‑displacement double Hydraulic Vane pump, medium‑high pressure hydraulic pump
‑ Structure: DP3 + DP1 double pump combination
‑ Displacement: Multiple displacement combinations available for front and rear pump
‑ Continuous rated pressure: Up to 17.5 MPa
‑ Max rotating speed: 1800 rpm
‑ Mounting: Standard flange mounting
‑ Shaft form: Standard keyed drive shaft
‑ Rotation direction: Clockwise as standard, counter‑clockwise optional
‑ Maintainable part: Interchangeable DP series cartridge kit
‑ Working medium: Anti‑wear hydraulic mineral oil for industrial hydraulic system, ISO‑VG32 / VG46 recommended
‑ Operating oil temperature: ‑20℃ ~ +80℃
‑ Key Features: Compact double‑pump layout, balanced vane design, low‑noise operation, small pressure pulsation, high volumetric efficiency, modular cartridge maintenance, stable continuous operation for light‑to‑medium‑load industrial Machine
Working Principle
As a dual‑unit Hydraulic Vane pump, this hydraulic pump is assembled with two independent pumping assemblies inside one housing. Driven by input shaft, rotors and vanes rotate inside respective cam rings. Centrifugal force pushes vanes closely against inner surface of cam rings. Periodic volume variation completes oil suction and pressure delivery, providing two separate pressure oil flows for the complete hydraulic system. The balanced‑vane structure counteracts radial force, effectively reducing vibration and noise during long‑time running of the Machine.
When vanes, cam ring or side plates suffer wear, the hydraulic pump will produce internal leakage, pressure drop, insufficient flow and abnormal noise. Replacing matched DP series cartridge kit can rapidly restore full working performance of your hydraulic system.
Core Advantages
1. Compact DP3+DP1 double‑pump structure, occupies less installation space, perfectly fits space‑constrained industrial Machine.
2. Balanced vane design, low pressure pulsation and low‑noise performance, adapts to noise‑controlled workshop environment.
3. Dual independent flow output, can supply oil for two different hydraulic circuits at the same time, simplifies layout of complex hydraulic system.
4. Modular cartridge‑in‑housing construction, supports quick field overhaul without removing the whole hydraulic pump from Machine, reduces downtime of hydraulic system.
5. Standard mounting and port dimensions, good interchangeability for original replacement and system retrofitting, maintains high volumetric efficiency under continuous medium‑high‑pressure operation.
Application Range
DP31 medium‑high‑pressure double Hydraulic Vane pump is a practical dual‑flow power‑supply hydraulic pump for industrial hydraulic system. Widely applied to automated machine tools, small injection‑molding auxiliary machinery, light‑duty hydraulic presses, packaging equipment and other hydraulic‑driven industrial Machine. Popular for hydraulic repair workshops, equipment integrators and global spare‑parts distributors.
