HYDM-DF-044-RTX60-70 Hydraulic Motor | 44 cc Danfoss

HYDM-DF-044-RTX60-70 Hydraulic Motor | 44 cc Danfoss

• HYDM-DF-044-RTX60-70 is a compact, direct-drive hydraulic
  motor kit built around a Danfoss external-gear motor sized
  at 44 cc/rev (≈2.65 cid) with an SAE-B two-bolt pilot.
• Purpose-matched to spin Annovi Reverberi RTX60 and RTX70
  triplex pumps smoothly in tight skids, service bodies, vans, and plant carts
  while eliminating belts and bulky guards.
• A rigid shared base keeps the motor and pump on the same centerline to
  reduce side-loads on bearings and seal packs, lowering vibration and
  extending service life.
• The 44 cc displacement delivers high starting torque and calm, predictable
  speed for stable pressure and clean trigger cycling on high-pressure builds.

Pump HYDM-DF-044-RTX60-70 Hydraulic Motor | 44 cc Danfoss

Manufacturer & Duty Points

• Pumps are engineered and manufactured by
  Annovi Reverberi (AR) in Modena, Italy, industry leader
  since 1958.
• AR pumps ship from the factory with crankcase oil installed plus an
  easy-view sight glass and vented dipstick.
• Typical RTX60 duty point:
  ≈60 L/min (≈15.8 GPM) at 300 bar (≈4350 PSI) near 1450 RPM.
• Typical RTX70 duty point:
  ≈70 L/min (≈18.5 GPM) at 200 bar (≈2900 PSI) near 1450 RPM.
• Choose nozzle orifices for your exact working point and
  never overspeed the pump.

Hydraulic Motor & Porting

• Hydraulic motor type & brand:
  Danfoss external-gear, 44 cc (≈2.65 cid) with SAE-B
  two-bolt pilot for direct mounting.
• Typical hydraulic ports:
  SAE-12 ORB (3/4″) pressure/return, plus a
  SAE-8 ORB (1/2″) case drain when required by the motor
  build (verify on the selected unit).
• Observe A/B port orientation for correct rotation and route any case drain
  above reservoir oil level to prevent aeration.
• Size hose IDs generously and respect bend radii to avoid restriction and
  unwanted heat.

Sizing & Power Calculations HYDM-DF-044-RTX60-70 Hydraulic Motor | 44 cc Danfoss

• Estimate pump speed:
  rpm ≈ 231 × hydraulic gpm ÷ 2.65 (cid).
• Estimate torque:
  lb-in ≈ 2.65 (cid) × system psi ÷ 6.283.
• Plan hydraulic horsepower:
  hp ≈ gpm × psi ÷ 1714, then apply realistic efficiencies to
  confirm shaft power at the nozzle set.

Circuit Protection & Cooling

• Set upstream relief valves for the RTX duty class and target working
  pressure.
• Specify return filtration in the
  10–25 μm range with an adequate β-rating.
• Size the reservoir for heat rejection using
  2–3× total system flow as a practical rule of thumb.
• Add an oil cooler for hot climates, prolonged bypass operation, or
  continuous duty.

Water-Side Plumbing

• RTX60 HYDM-DF-044-RTX60-70 Hydraulic Motor | 44 cc Danfoss manifolds are typically
  1″ F BSPP inlet / 1/2″ F BSPP outlet.
• RTX70 manifolds are typically
  1-1/4″ F BSPP inlet / 1/2″ F BSPP outlet.
• Adapters to NPT are readily available when required.
• Keep the suction run short, straight, and oversize from a flooded feed; use
  anti-collapse suction hose and a coarse inlet strainer to protect
  volumetric efficiency and prevent cavitation.
• Use an adjustable unloader matched to the RTX series to hold working
  pressure and safely bypass flow.
• Include a correctly sized high-pressure relief and a glycerin-filled gauge
  for commissioning and diagnostics.
• Add a thermal relief valve on the bypass loop to protect seals during
  extended gun-closed operation.

Warranty & Ownership

• AR backs the water end with a
  5-year limited, conditional warranty.
• Coverage requires proper hydraulic and water-side installation, correct
  filtration and lubrication, and operation within published limits.
• Seals and valves are considered consumables and are not covered as wear
  items.

HYDM-DF-044-RTX60-70 Hydraulic Motor | 44 cc Danfoss

Ideal Applications

• Mobile wash skids and service trucks.
• Municipal and DOT fleets.
• Plant maintenance and parts-cleaning cells.
• Enclosed van bodies and tight service bodies where belts are undesirable.
• Rental yards, agriculture and ranch equipment wash bays.
• Marine/tug-boat and dock washdown systems.
• Food & beverage sanitation and rinse systems
  (observe local hygienic standards).
• Contractor rigs that already carry hydraulic power.

At-a-Glance Specs

• Kit: HYDM-DF-044-RTX60-70 hydraulic motor package for RTX
  pumps.
• Hydraulic motor: Danfoss external-gear, 44 cc (≈2.65 cid),
  SAE-B two-bolt pilot.
• Pump compatibility:
  AR RTX60 and RTX70 triplex pumps (pumps sold separately
  unless otherwise specified).
• RTX60 performance target: ≈15.8 GPM @ 4350 PSI near 1450 RPM.
• RTX70 performance target: ≈18.5 GPM @ 2900 PSI near 1450 RPM.
• Pump ports: RTX60 1″ F BSPP inlet / 1/2″ F BSPP outlet; RTX70
  1-1/4″ F BSPP inlet / 1/2″ F BSPP outlet.
• Direct-drive, belt-free geometry with a rigid, alignment-stable base and
  predictable hose routing for repeatable OEM builds.