HYD-RTX70-DD Hydraulic Motor Pump | 18.5 GPM 2900 PSI

HYD-RTX70-DD | Direct Drive Hydraulic Pump | 18.5 GPM 2900 PSI | 13T Spline

HYD-RTX70-DD is the RTX 70.200 platform in its pump-only direct-drive configuration — an Annovi Reverberi 366-series triplex plunger pump rated at 18.5 GPM (70 L/min) and up to 2900 PSI (200 bar) at 1450 RPM, with a hollow 13-tooth splined shaft that mounts straight onto the SAE B hydraulic motor of your choosing. That last clause is the point: the complete HYD-RTX70 package tops out at 2200 PSI because its supplied motor does — but the pump itself is a 200-bar machine, and pairing this DD version with a properly sized motor unlocks the full 2900 PSI at the same 18.5 gallons per minute. Same flow, roughly a third more working pressure, when you bring the drive.

That freedom serves builders and fleets who spec their own hydraulics: hydrovac and jetter systems that want big-flow rinsing AND real cutting pressure from one wet end, high-output washdown skids, aggregate and mining installations, and OEM machines where the drive motor was chosen before the pump was.

HYD-RTX70-DD Specifications

• SKU: HYD-RTX70-DD
• Configuration: Direct-drive hydraulic pump — hollow 13T splined shaft mounts directly onto an SAE B hydraulic motor
• Pump: Annovi Reverberi RTX 70.200 (366-series frame)
• Flow Rate: 18.5 GPM (70 L/min)
• Maximum Discharge Pressure: 2900 PSI (200 bar)
• Rated Speed: 1450 RPM — never overspeed
• Power Requirement: 35 HP (26.1 kW) at full duty, per AR’s published rating
• Drive Interface: Hollow 13-tooth splined shaft, F56-class close-couple flange (SAE J498 B101)
• Inlet Ports (2): 1″ F
• Discharge Ports (2): 1/2″ F
• Maximum Fluid Temperature: 140°F
• Plungers: Ceramic
• Weight: Approximately 72 lbs (32.5 kg)
• Left-hand rotation version available: RTX70-DD-SX

Four Published Motor Pairings — the Most Flexible Platform in the Family

Annovi Reverberi publishes more factory pairings for the RTX 70.200 than any other model in the line, which means almost any serious hydraulic system already matches one of them. Flow-rich circuits: the gear 90cc motor on 142 L/min (37.5 GPM) of oil at 137 bar (1,987 PSI). Balanced systems: the piston 64cc on 102 L/min (26.9 GPM) at 190 bar (2,756 PSI), or the gear 44cc on 71 L/min (18.8 GPM) at 240 bar (3,481 PSI). Pressure-rich, flow-tight circuits: the piston 34cc on just 55 L/min (14.5 GPM) at 350 bar (5,076 PSI). Budget roughly 38–43 hydraulic horsepower continuously whichever route you take — dedicated-system territory. For anything off-list, hold the rule: RPM ≈ 231 × hydraulic GPM ÷ displacement (in³) to reach 1450 RPM, torque verified at working pressure, relief set at the motor’s rating. Call WSHPWR with your circuit’s flow and pressure and we will name the pairing in one conversation.

Package Pressure vs. Pump Pressure

If you already own or plan the standard package, know the trade honestly: the HYD-RTX70’s included Danfoss caps the system at its 2,610 PSI oil ceiling and a 2200 PSI water rating — plenty for volume washdown. The HYD-RTX70-DD hands the ceiling decision to you. Applications that live at 2200 PSI lose nothing either way; applications that need the pump’s full 2900 PSI — heavier stripping behind the same fire-hose flow, jetting with more cutting authority — get there only through this DD route with a motor sized for the duty. It is the difference between buying a system and building one.

Direct-Drive Architecture

The hollow 13T spline engages a male-splined SAE B motor at the F56 flange — no coupler, no belt, no alignment procedure, no guard. One centerline keeps side load off bearings and seal packs, the footprint stays tight for decks and skids, and motor or pump dismounts independently at the flange when service requires. For reversed installations, the RTX70-DD-SX left-rotation sibling covers mirrored drive layouts.

HYD-RTX70-DD Installation & Operation Notes

Confirm the spline before ordering — 13T SAE B; 14T SAE C hardware from RTD-class systems will not engage. Mount horizontally, verify rotation at commissioning, and give suction the engineering it demands at 18.5 GPM: flooded, filtered, full-size through the dual 1″ inlets — cavitation is the leading killer of high-flow pumps and it is entirely preventable. Fit an unloader plus safety relief for the working pressure, rate downstream components for your chosen duty point with margin, size nozzles to 18.5 GPM, hold 1450 RPM as the ceiling, and winterize without fail.

Quality Assurance & Maintenance

Every HYD-RTX70-DD ships factory-tested for flow rate, pressure stability, and vibration. Service runs the shared RTX schedule — crankcase oil changes, seal inspection, in-place valve checks with common AR repair kits — and fleets already stocking RTX parts add this pump without adding a shelf.

HYD-RTX70-DD Key Features & Applications

• 18.5 GPM at 2900 PSI (200 bar), 1450 RPM — the pump’s full rating, unlocked by your motor choice.
• Four AR-published motor pairings — from 14.5 to 37.5 GPM of oil — fit more circuits than any RTX sibling.
• Hollow 13T splined shaft direct-drives from an SAE B hydraulic motor; SX left-rotation version available.
• Approximately 38–43 hydraulic HP at full duty — engineered-system territory.
• Ceramic plungers and in-place valve service on the shared RTX parts platform, ~72 lbs.
• Ideal for hydrovac and jetter builds wanting flow plus cutting pressure, high-output washdown skids, aggregate and mining installations, and OEM machines with the motor already specified.