Cat Piston Pump

Product Overview

Key Advantages

• High Volumetric & Mechanical Efficiency: Optimized triplex piston mechanism ensures smooth, low-pulsation flow with minimal internal slip.
• Superior Pressure Stability: Engineered to deliver continuous working pressures up to 350 bar (5000 PSI) with exceptional dynamic response.
• Robust Industrial Construction: Concentric solid ceramic plungers, polished stainless steel valves, and heavy-duty crankcase components ensure extended service life.
• Precision Flow Control: Variable and fixed displacement options allow seamless integration into automated, closed-loop fluid and hydraulic control circuits.
• Flexible Media Compatibility: Designed to handle water, hydraulic fluids, high-temperature liquids, and mild corrosive chemicals with dedicated seal packages.

Technical Specifications

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Configuration Options

• Drive & Structure Configuration: Direct drive (hollow shaft), belt drive, gearbox drive, and solid key shaft designs for flexible prime mover mounting (electric motor or gas engine).
• Control Mechanisms: Constant pressure control, manual flow adjustment, proportional valve integration, and external bypass pressure regulation.
• Feedback Options: Integrated pressure transducer ports, stroke/speed sensors, and flow monitoring interfaces for real-time closed-loop control.
• Rated Flow Options: Configurable displacement volumes per stroke ranging from micro-flow high-pressure delivery to large-volume transfer systems.
• Porting & Connection: NPT, BSPP, and SAE high-pressure flanged inlet/outlet connection ports.
• Mounting Style: Standard baseplate foot mounting, horizontal flange mounting, and vertical sub-base mounting configurations.
• Electrical & Auxiliary Configurations: Optional high-temp seal kits, IP65/IP66 electrical sensors, thermal relief valves, and magnetic oil drain plugs.

Key Materials and Components

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• Ceramic Plungers: Ultra-smooth, high-density solid ceramic plungers engineered to minimize friction, heat generation, and seal wear while providing complete corrosion resistance.
• Manifold Housings: Available in forged brass, high-tensile 316 stainless steel, or nickel-aluminum bronze to withstand severe mechanical fatigue and aggressive chemical media.
• Valves & Seats: Precision-ground 304/316 stainless steel valves, seats, and springs designed for immediate sealing, anti-cavitation durability, and zero-leak performance.
• High-Pressure Seals: Proprietary elastomeric and PTFE-compounded high-pressure seals (NBR, FKM/Viton, EPDM) specifically formulated for chemical resistance and thermal stability.
• Crankcase & Bearings: Die-cast aluminum alloy crankcase with oversized heavy-duty taper roller bearings to absorb high radial loads during continuous continuous operation.

Packaging and Transport Protection

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• Industrial Protection: Heavy-duty, vacuum-sealed polyethylene anti-corrosion barrier wrapping with VCI (Vapor Corrosion Inhibitor) film for long-term ocean and land transport.
• Moisture & Rust Prevention: Embedded commercial desiccant packs within seal housings and internal fluid cavities filled with rust-inhibiting preservation oil.
• Impact & Shock Resistance: Custom-molded high-density EPE foam inserts fitted into reinforced, export-grade triple-wall corrugated boxes or custom wooden crates.
• Fastening & Bulk Packaging: Internal steel strapping and anti-shift wooden blocking to secure heavy drive shafts; packed bulk shipments are heat-treated (ISPM 15 compliant) wooden palletized with heavy stretch wrap.

Applications

• Ultra-High-Pressure Waterjet & Cutting Systems: Provides constant, non-pulsating pressure control to precision water cutting heads and surface preparation nozzles.
• Industrial Centralized Washdown & De-scaling Equipment: Serves as the high-flow high-pressure core pump for automated steel billet descaling lines and food-grade vessel cleaning rigs.
• Precision Hydraulic Power Units (HPUs): Acts as the primary pressure generation source for high-precision hydraulic presses, clamping mechanisms, and tensioning devices requiring low dynamic hysteresis.
• Commercial Reverse Osmosis & Desalination Units: Drives raw seawater through filtration membranes under steady continuous high pressure, resisting chloride corrosion.
• Chemical Injection & Metering Rigs: Delivers accurate, continuous proportional flow dosing for high-pressure oilfield chemical injection skid packages.

Related Models

FAQ

Q: How do I confirm the correct Cat Piston Pump model for my existing machine?

A: You can confirm the model by checking the stamped model code on the pump crankcase tag, or by matching your required operating parameters: peak operating pressure (bar/PSI), target flow rate (L/min or GPM), shaft input speed (RPM), and drive motor connection type. Contact our engineering team with your system operating specs for precise cross-referencing.

Q: What is the recommended fluid filtration level for these pumps?

A: To maximize seal life and prevent valve scoring, fluid entering the pump inlet should be filtered to a minimum of 50 to 80 mesh (approx. 177 - 300 microns) for clean water systems. For hydraulic fluid applications, a filtration level of ISO 4406 18/16/13 (10 to 25 micron absolute suction/return filtration) is highly recommended.

Q: What types of hydraulic oil or liquid media can be used?

A: Standard units support mineral-based hydraulic oils (ISO VG 32 to 68), water glycol mixtures, and pure clean water. For high-temperature, synthetic fluids, or aggressive chemicals, optional FKM, Viton, or PTFE seal kits must be specified upon ordering.

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Product Overview

The Cat® 20R-8885 Reman Piston Pump is a high-performance, factory-remanufactured hydraulic pump designed to restore the power and efficiency of your heavy machinery. Built to exact Caterpillar specifications, this piston pump provides an eco-friendly and cost-effective alternative to buying brand-new parts, without sacrificing operational reliability.

Key Advantages

• Maximum Cost Savings: Delivers identical performance to a brand-new original equipment manufacturer (OEM) part at a fraction of the cost.

  Eco-Friendly Remanufacturing: Reduces waste and saves raw materials by recycling high-strength pump bodies and incorporating 100% new critical wear components.

  Factory Tested: Every single unit undergoes stringent multi-point pressure and flow-rate testing to guarantee seamless integration and zero defects.

  Comprehensive Warranty: Backed by the standard Cat warranty, providing complete peace of mind and excellent support worldwide.

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Technical Specifications

Applications

Related Models

FAQ

Q1: What exactly does "Cat Reman" mean for the 20R-8885 Piston Pump?

A1: "Cat Reman" means the pump is remanufactured by Caterpillar, not just repaired. The old core is taken apart, cleaned, and inspected. All wear parts like bearings and seals are replaced with brand-new ones. The final product is tested to meet the same quality standards as a brand-new part.

Q2: Will using a Reman piston pump lower my machine's performance?

A2: No, it will not. Because Cat Reman parts use original factory components and engineering updates, they deliver the exact same flow, pressure, and speed as a brand-new pump.

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Request a Quote Today to ensure your hydraulic system performs at its best with genuine components from Yanhui Hydraulic.