AR1690 | Gear Box for XRA/RKA Pump Series

AR1690 | Gear Box for XRA/RKA Pump Series

The AR AR1690 gear box is a precision-engineered power transmission unit developed by
Annovi Reverberi to provide smooth, efficient, and long-lasting performance for
XRA and RKA pump series. Designed to ensure accurate alignment and consistent torque
delivery, this gear box serves as a vital link between the power source and pump, enabling optimal
speed reduction, stable performance, and extended service life. Built for industrial and
professional cleaning systems, the AR1690 combines high-strength materials, precision machining,
and sealed lubrication for dependable operation under continuous-duty conditions.

Housing & Construction

Constructed from heavy-duty cast aluminum or alloy steel, the AR1690 gear box housing offers an
ideal balance of durability and lightweight handling. Its rigid structure minimizes vibration and
mechanical stress while maintaining exact gear alignment under demanding torque loads. A
corrosion-resistant finish ensures reliable performance in wet, high-pressure, or chemically
exposed environments, making it ideal for industrial cleaning setups, washdown systems, and
pressure washer configurations where durability and consistency are essential. The compact yet
robust design also allows easy installation in both mobile and stationary units.

Hardened Steel Gearing

Inside the AR1690, precision-ground gears made of hardened steel deliver efficient torque transfer
and smooth mechanical engagement. The internal gearing system is carefully ratioed to match the
operating speeds of XRA and RKA pump series, converting high engine or motor RPMs into controlled
pump speeds for optimal flow and pressure. This gear reduction system enhances mechanical
efficiency and prevents over-speeding and premature wear on pump components. Each gear is
engineered for maximum surface contact and low backlash, ensuring quiet operation, balanced
torque, and superior load distribution across the entire drive train.

Shafts, Bearings & Alignment

Shafts are supported by high-grade bearings that maintain concentric alignment and reduce friction
during rotation. The input shaft, machined with a precision keyway, provides a tight, slip-free
connection to engines or electric motors. The output shaft interfaces perfectly with XRA and RKA
series pumps, maintaining consistent alignment and efficient power transmission. This exact
coupling prevents vibration, shaft wobble, and mechanical imbalance, all of which contribute to
smoother system operation, reduced maintenance needs, and extended equipment lifespan.

Sealed Oil Bath Lubrication

The AR1690 incorporates a sealed oil bath lubrication system designed to provide constant
lubrication and cooling to all moving parts. This closed system minimizes friction and heat
buildup while protecting internal components from contaminants such as water, dust, or detergent
residue. The result is reduced maintenance requirements and reliable long-term operation. Routine
oil checks and changes are simple to perform, and with proper care, the gear box delivers years of
consistent performance with minimal service interruptions.

Installation & Fitment

Installation of the AR1690 is straightforward and precise. Mounting flanges and bolt holes are
pre-machined to fit AR XRA and RKA pumps and standard engine configurations, eliminating the need
for modification or alignment adjustment. The compact form factor allows easy integration into
equipment frames, while the balanced design helps maintain mechanical stability during operation.
Once installed, the gear box maintains perfect alignment between engine and pump, ensuring
vibration-free operation and uniform torque distribution.

Performance & Efficiency

During operation, the AR1690 gear box provides stable, efficient, and quiet performance. Hardened
gears and precision bearings work together to deliver smooth torque transfer, preventing power
loss and minimizing vibration. The optimized speed ratio allows pumps to run within their designed
pressure and flow specifications, improving performance consistency and energy efficiency. This
precise control over operating speed enhances cleaning effectiveness and reduces wear on seals,
pistons, and valves within the pump assembly.

Quality Control & Reliability

Each AR1690 gear box is manufactured under Annovi Reverberi’s rigorous quality control
procedures. Every unit undergoes dimensional inspection, balance testing, and performance
evaluation to ensure that it meets AR’s standards for torque handling, efficiency, and longevity.
This comprehensive testing guarantees reliable performance in demanding commercial and industrial
environments where equipment uptime and consistency are critical.

Maintenance

Maintenance requirements are minimal thanks to the sealed design and corrosion-resistant
materials. Regular inspection of mounting bolts and lubricant levels keeps operation smooth, while
the robust construction minimizes the likelihood of leaks or mechanical wear. When properly
maintained, the AR1690 can provide many years of trouble-free service, making it an economical and
reliable component for long-term system performance.

AR1690 | Gear Box for XRA/RKA Pump Series

The AR AR1690 gear box for XRA and RKA pump series exemplifies Annovi Reverberi’s
expertise in high-quality, precision-engineered power transmission systems. With hardened steel
gears, sealed oil bath lubrication, and a corrosion-resistant housing, it delivers smooth,
vibration-free torque transfer, consistent speed reduction, and dependable performance under
continuous operation. Ideal for industrial cleaning, commercial pressure washing, and other
demanding mechanical applications, the AR1690 ensures accurate power alignment, quiet efficiency,
and long-term durability—an essential solution for professionals who rely on consistent,
high-performance equipment every day.