RKA4G40HN-CR Pump with Gearbox | 1750 RPM Industrial Drive

RKA4G40HN-CR

• The AR RKA4G40HN-CR is a precision-engineered high-pressure pump with an integrated gearbox designed for reliable, continuous-duty performance.
• Optimized for demanding industrial and commercial cleaning systems where consistent power, smooth hydraulic flow, and long-term durability are essential.
• Operates at 1,750 RPM with a built-in gear reduction that converts higher motor speeds into ideal pump speed without external reducers or adapters.
• Produces 4.0 GPM at 4,000 PSI

Integrated Gearbox Design

• Eliminates the need for separate gearboxes, belts, pulleys, or alignment-sensitive couplers.
• Provides efficient torque transfer and stable performance across extended duty cycles.
• Oil-bath lubrication inside the gearbox supports smooth operation, reduced noise, and maximum torque delivery.
• Reduces mechanical complexity and the number of moving parts that require maintenance or alignment.
• Integrated gearbox allows seamless pairing with gas engine with 1 inch horizontal crankshaft.

RKA4G40HN-CR Pump Architecture

• Triplex plunger configuration delivers balanced, pulse-reduced flow for consistent water delivery.
• Minimizes vibration, pressure variance, and hydraulic fatigue on downstream tools such as spray guns, hoses, nozzles, and valves.
• Precision-machined brass manifold offers corrosion resistance and pressure stability under repeated high-pressure cycling.
• Internal splash lubrication distributes oil across rotating components to reduce friction and promote long-term reliability.

Internal Components

• Hardened stainless-steel pistons paired with solid ceramic plungers resist friction, heat wear, and chemical exposure.
• Ceramic plungers protect sealing surfaces and help prevent scoring during extended use.
• High-quality seals and O-rings provide leak-free performance and resistance to detergents, temperature fluctuation, and repeated pressurization.
• Die-cast aluminum crankcase offers strong yet lightweight structure and efficient heat dissipation.
• Precision-ground crankshaft supported by oversized ball bearings maintains rotational balance and reduces mechanical stress for quiet operation and extended bearing life.

Performance and Application Range

• Capable of operating with cold or compatible heated water within AR’s rated temperature range.
• Suited for heavy equipment washing, agricultural sprayers, industrial wash systems, and food and agricultural facility maintenance.
• Ideal for permanent wash racks, industrial skids, mobile rigs, and agricultural spray systems that require steady high-pressure output.
• When paired with suitable unloader valves, hoses, and spray tips, it supports large-surface cleaning, industrial wash lines, and continuous-duty systems.

Benefits of the RKA4G40HN-CR

• Integrated gear-reduction drive simplifies assembly for installers and OEMs.
• Fewer external components reduce potential failure points and alignment issues.
• Smooth trigger response and reduced vibration improve operator comfort and downstream equipment life.
• Corrosion-resistant brass manifold and durable ceramic plungers extend service intervals.
• Factory testing verifies sealing integrity, pressure stability, calibrated flow, and mechanical balance before shipment.

Maintenance and Service

• Maintenance focuses on routine oil changes, seal and plunger inspections, and clean inlet filtration.
• Ceramic plungers and brass manifold resist internal wear forces and thermal cycling to reduce replacement frequency.
• External sight glass allows quick visual oil checks for preventative maintenance.
• Serviceable platform with standardized mounting simplifies pump removal and replacement when required.

Why Choose the AR RKA4G40HN-CR

• Combines high-pressure performance with an integrated gearbox in a compact, installer-friendly package.
• Delivers smooth hydraulic performance, steady pressure, and extended service intervals for demanding applications.
• Ideal for OEMs and professional users who need reliable, efficient, low-maintenance high-pressure pump systems.
• Engineered to provide long-lasting power, mechanical efficiency, and stable hydraulic output in tough environments.