Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of oilgear pvwj in China. We warmly welcome you to wholesale bulk oilgear pvwj for sale here from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.
Product Overview
▔▔The Oilgear PVWJ series is an open-loop, variable-displacement axial piston pump designed for precise, high-pressure hydraulic control. Positioned as a versatile workhorse within Oilgear's heavy-duty fluid power lineup, the PVWJ pump provides reliable, energy-efficient flow and pressure regulating capabilities for demanding industrial and mobile applications. Built on a modular platform with advanced hydro-dynamic bearing designs, it delivers high performance, quick system responsiveness, and long service life under high-pressure operating conditions.
Key Advantages
▔▔- Rugged Modular Architecture: Compact, field-proven layout allowing straightforward integration and flexible control retrofits.
- Hydro-dynamic Swashplate Bearings: Enhances durability, reduces mechanical wear, and supports continuous operating pressure up to 3750 psi (260 bar).
- Quiet Operation: Optimized timing and fluid porting ensure low noise emissions across all operating pressure ranges.
- Multiple Control Strategies: Offers pressure compensation, load sensing, proportional electric control, and mechanical horsepower limiting.
- Contaminated Fluid Tolerance: Superior resistance to fluid contamination and harsh operating environments due to specialized shaft seals and cylinder design.
Technical Specifications
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| Technical Parameter | Specification / Value |
| Displacement Range | 0.66 to 4.0 in³/rev (11 to 65 cc/rev) across frames |
| Maximum Continuous Pressure | 3750 psi (260 bar) |
| Maximum Peak Pressure | 4250 psi (293 bar) |
| Maximum Drive Speed | Up to 3000 RPM (depending on displacement size) |
| Rated Flow Range | 5.2 to 31.2 GPM (19.7 to 118 L/min) at 1800 RPM |
| Fluid Temperature Range | -13°F to 180°F (-25°C to 80°C) |
| Fluid Viscosity Range | 65 to 3000 SUS (12 to 650 cSt) |
| Maximum Hysteresis | Less than 1.5% of maximum rated control parameter |
| Dynamic Control Response Time | 25 to 50 ms (full stroke / pressure response) |
| Recommended ISO Cleanliness Class | ISO 18/16/13 or cleaner |
Configuration Options
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Pump Structure: Single variable-displacement axial piston pump, with optional rear drive thru-shaft options for tandem pump mounting.
Control Options:
- Single / Dual Pressure Compensators (P-1, P-2)
- Load Sensing Control (P-C)
- Proportional Electro-hydraulic Control (PE)
- Horsepower Limiting Control (H-1, H-2)
- Manual Screw Adjuster (M)
Feedback Mechanism: Internal mechanical linkage, LVDT feedback for proportional electrical control, or internal dynamic pilot feedback.
Porting Interfaces: SAE 4-bolt flange connections, or SAE straight-thread O-ring boss ports (rear or side porting configurations available).
Mounting Interface: SAE A, B, or C standard 2-bolt and 4-bolt pilot mounts.
Shaft Configurations: SAE keyed shaft or SAE involute splined shaft.
Electrical Configuration: 24V DC / 12V DC solenoid coils for proportional valves; IP65/IP67 ingress protection rating.
Key Materials and Components
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- Cylinder Barrel: High-density alloy ductile iron, heat-treated for extreme resistance to wear and thermal stress.
- Piston Assembly: Hardened alloy steel pistons with micro-finished bronze slippers for low friction coefficient and superior anti-galling performance.
- Valve Plate: Bimetallic hardened steel with bronze cladding layer to ensure leak-free high-pressure sealing and long mechanical life.
- Drive Shaft: High-tensile forged steel shaft engineered to withstand continuous high torque and radial thrust loads.
- Dynamic Seals: High-performance Fluorocarbon (FKM/Viton) main shaft seals ensuring broad media compatibility and high-temperature capability.
Packaging and Transport Protection
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- Individual Unit Protection: Each unit is thoroughly drained, oil-inhibited internally, capped at all port connections with plastic plugs, and enclosed in heavy-duty anti-corrosion VCI plastic wrapping.
- Cushioning & Shock Absorption: Wrapped in custom-molded shock-absorbing foam or high-density inner padding to prevent damage during international transit.
- Outer Enclosure: Heavy-duty wooden cases or multi-layer reinforced corrugated master cartons compliance-labeled for export shipping.
- Bulk & Palletized Packaging: Stacked on heat-treated, fumigated ISPM-15 compliant wooden pallets, steel-banded, and shrink-wrapped with stretch film for sea and air freight safety.
Applications
▔▔- Metal Stamping and Forging Presses: Used for precise main system pressure control and fast slide acceleration/deceleration cycles during deep drawing and trimming operations.
- Plastic Injection Molding Machinery: Controls variable clamp tonnage, injection hold pressure, and metering motor drive speeds for consistent part wall thickness.
- Hydraulic Broaching and Machine Tools: Supplies steady oil volume to feed cylinders, maintaining tight speed stability and fine positioning under fluctuating cutting resistance.
- Civil & Construction Equipment: Drives winch motors and swing mechanisms in mobile cranes and marine deck machinery requiring sensitive load-sensing performance.
- Rubber Vulcanizing Equipment: Provides dynamic multi-stage pressure clamping and holding during long cure cycles with maximum power savings.
Related Models
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| Part / Ordering Model | Displacement Code | Maximum Pressure | Control Type | Mounting Standard |
| PVWJ-011-A1UV-LSAY-P-1NNNN | 011 (11 cc/rev) | 3750 psi (260 bar) | Single Pressure Compensator | SAE A 2-Bolt Mount |
| PVWJ-022-A1UV-LSAY-P-1NNNN | 022 (22 cc/rev) | 3750 psi (260 bar) | Pressure Compensator | SAE B 2-Bolt Mount |
| PVWJ-033-A1UV-LSAY-P-C1NNN | 033 (33 cc/rev) | 3750 psi (260 bar) | Load Sensing Control | SAE B 2-Bolt Mount |
| PVWJ-046-A1UV-LSAY-P-1NNNN | 046 (46 cc/rev) | 3750 psi (260 bar) | Pressure Compensator | SAE B 2/4-Bolt Mount |
| PVWJ-065-A1UV-LSAY-PE-1NNN | 065 (65 cc/rev) | 3750 psi (260 bar) | Proportional Electric Control | SAE C 2/4-Bolt Mount |
FAQ
▔▔Q1: How do I select or confirm the correct PVWJ model code for my equipment?
A: To confirm the precise model code, check the nameplate on your existing pump for displacement (e.g., 011, 022, 046), pressure rating, shaft type (splined or keyed), port configuration, and control code (e.g., P-1, P-C, PE). You can send a picture of your nameplate to our engineering team for immediate cross-referencing.
Q2: What is the recommended oil filtration level for the Oilgear PVWJ series?
A: We recommend maintaining a fluid cleanliness level of ISO 18/16/13 or better. Installing a 10-micron nominal return line filter or pressure filter ensures smooth compensator action and extends internal piston life.
Q3: Which hydraulic fluids are compatible with this pump line?
A: Standard units operate best with high-quality petroleum-based anti-wear hydraulic oil (ISO VG 32, 46, or 68). For synthetic fluids, water-glycol, or fire-resistant fluids, special internal seals and reduced operating pressures may be required-please consult our technical team.
Contact Us
▔▔Get in touch with us and we will get in touch with you quickly to give you more personalized information.
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