HYD-RK1520BK1U Hydraulic Pump Motor Kit | RK1520 BK18

HYD-RK1520BK1U Hydraulic Pump Motor Kit | RK1520 BK18

• HYD-RK1520BK1U is a standardized hydraulic-drive mounting kit that
  combines the proven RK1520 layout with the BK18 base so a compact
  low-speed/high-torque (LSHT) hydraulic motor and an Annovi Reverberi triplex
  plunger pump share a rigid, square mounting plane.
• Drill-to-fit base and slot-ready patterns let shops set the motor-to-pump
  centerline quickly and repeatably, reducing side loads on bearings and seal
  packs and shrinking footprint for tight skids, service bodies, enclosed vans,
  and plant carts.
• Geometry anticipates real plumbing with short, direct suction runs, tidy
  pressure and bypass routing, and perimeter space for an unloader block without
  tight bends.
• Clear access to coupling, oil sight glass, vented dipstick, and fasteners lets
  a single technician perform coupling checks, oil changes, and torque
  verification using common tools.

Hydraulic Motor Interface

• Specify an LSHT gerotor/geroler-type hydraulic motor (manufacturer may vary)
  and match displacement to the target pump RPM at working pressure.
• Quick sizing formulas:
  • RPM ≈ 231 × hydraulic GPM ÷ motor displacement (cid)
  • Torque (lb-in) ≈ displacement (cid) × PSI ÷ 6.283
  • Hydraulic HP ≈ GPM × PSI ÷ 1714 (apply efficiency)
• Typical LSHT porting: SAE-12 (3/4″ ORB) pressure/return plus SAE-8
  (1/2″ ORB) case drain when required by the motor build.
• Observe A/B port orientation for correct rotation; route any case drain above
  reservoir oil level to prevent aeration.
• Size hose IDs generously, respect minimum bend radii, and avoid restrictions
  that create heat and pressure drop.
• Protect the circuit with upstream reliefs set to your working pressure; use
  10–25 μm return filtration with an adequate β-rating, and size the reservoir
  for heat rejection (practical rule: 2–3× total system flow) with an oil cooler
  added for hot climates, prolonged bypass, or continuous duty.

Pump Interface HYD-RK1520BK1U (Annovi Reverberi Triplex)

• BK18 base is drilled and slot-ready for common Annovi Reverberi (AR) pump feet
  so you can pair the kit with the AR water end that meets your duty point.
• Annovi Reverberi is the pump manufacturer, a leader in quality
  since 1958 with pumps engineered and built in Modena, Italy.
• Pumps ship with crankcase oil installed and include a vented dipstick and sight
  glass for fast commissioning.
• HYD-RK1520BK1U Typical AR porting:
  • Small frame: 1/2″ F-BSPP inlet, 3/8″ F-BSPP outlet.
  • Mid frame (e.g., RTX): 1″ F-BSPP inlet, 1/2″ F-BSPP outlet.

  Adapters to NPT are readily available.

• Keep suction short, straight, and oversize from a flooded feed; use a coarse
  inlet strainer and anti-collapse suction hose to protect volumetric efficiency
  and prevent cavitation.
• Install an adjustable unloader matched to the chosen AR duty class and a
  correctly sized high-pressure relief; add a glycerin-filled gauge for
  commissioning and diagnostics and a thermal relief on the bypass loop for
  extended gun-closed operation.

Installation & Integration Checklist

• Match motor displacement to the target pump RPM using the sizing formulas and
  confirm rotation before opening the water supply.
• Verify hydraulic system relief settings, reservoir volume, filtration, and
  cooling capacity for the duty cycle.
• HYD-RK1520BK1U Include and correctly route a case-drain line if required by the selected
  motor, returning above reservoir oil level.
• Lay out suction, pressure, and bypass lines with smooth sweeps and generous
  bend radii; keep bypass routing short and low restriction to tank.
• Mount the BK18 base on a flat structure, torque fasteners in a cross pattern,
  and recheck hardware after initial run-in.
• Document final working pressure, relief settings, and nozzle selection on the
  equipment decal for future service reference.

Ownership & Warranty HYD-RK1520BK1U

• When paired with an AR pump, the water end is covered by 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 treated as consumables.
• Follow AR lubricant recommendations and change intervals, verify initial oil
  fill at startup, and keep the shaft and seal area clean during service.

HYD-RK1520BK1U Applications & Use Cases

• Ideal wherever hydraulic power already exists and inches matter: mobile wash
  skids on service trucks and trailers, enclosed van bodies, municipal and DOT
  fleets, sanitation rigs, and rental turn-backs.
• Well suited to heavy-equipment yards, agriculture and ranch equipment wash,
  marine and tug-boat dock washdown, and food & beverage sanitation lines and
  packaging rooms (observe local hygienic standards).
• Common in conveyor and parts-cleaning cells, plant carts, and contractor
  systems that need predictable geometry and fast single-tech PM.

Key Features HYD-RK1520BK1U at a Glance

• Rigid BK18 base geometry for repeatable alignment and
  fleet-standard OEM builds.
• Compatible with LSHT hydraulic motors (brand varies) using SAE-12 pressure/
  return and SAE-8 case-drain porting guidance.
• Compact footprint leaves room for short suction and tidy bypass routing while
  preserving service access.
• Clear access to coupling, sight glass, dipstick, and fasteners for single-tech
  service and quick inspections.
• Integration driven by simple formulas: match motor displacement to RPM, verify
  system reliefs, confirm reservoir and cooling capacity, and route plumbing for
  minimal restriction and long component life.