AR1693 | Gear Box, 2:1 Ratio, 1 in Shaft

AR1693 | Gear Box, 2:1 Ratio, 1 in Shaft

AR1693 Gear Box 
The AR1693 gear box is a precision-engineered power transmission unit developed by Annovi
Reverberi to deliver reliable, efficient, and controlled speed reduction for AR high-pressure
pumps. Featuring a 2:1 gear ratio and a 1-inch shaft, this gear box matches engine or motor
output speeds to the pump’s ideal operating range for balanced flow, stable pressure, and long
service life. Built for professional and industrial use, the AR1693 combines durable
construction, accurate machining, and long-term reliability to provide steady operation and
mechanical efficiency in demanding applications.

Durable Housing & Corrosion Resistance

Constructed from high-strength cast aluminum or alloy steel, the AR1693 housing provides
exceptional durability and rigidity while remaining lightweight for easier installation. A
corrosion-resistant finish protects against moisture, humidity, and chemical exposure, making it
ideal for commercial pressure washers, industrial cleaning systems, and agricultural sprayers.
The solid one-piece design minimizes vibration, noise, and mechanical stress, maintaining precise
internal alignment under constant load and high-torque conditions.

2:1 Reduction Ratio & Hardened Steel Gears

Inside the AR1693, precision-ground hardened steel gears deliver smooth and efficient power
transfer. The 2:1 reduction ratio cuts engine or motor speed in half, ensuring the pump operates
at its optimal RPM for stable pressure output and extended service life. This controlled reduction
prevents over-speeding that can cause excessive wear, cavitation, and premature pump failure,
while also improving energy efficiency and operational control. The low-backlash gear set is
designed for precise mesh engagement and quiet operation during continuous-duty use.

1″ Shaft & Accurate Alignment

The 1-inch input shaft is engineered for a tight, secure connection with compatible engines or
motors. A precision-machined keyway ensures slip-free engagement and consistent torque
transmission under high-load conditions. The output shaft aligns perfectly with AR pump drive
systems, maintaining true concentric rotation for smooth, balanced power delivery. This precise
alignment reduces vibration and prevents undue stress on couplers, seals, and bearings, enhancing
mechanical stability and equipment longevity.

Sealed Oil Bath Lubrication

The AR1693 incorporates a sealed oil bath lubrication system that continuously lubricates
internal gears and bearings. This enclosed system reduces friction, dissipates heat, and protects
against contamination from water or debris, ensuring consistent, low-maintenance performance. By
maintaining ideal operating temperatures and preventing metal-to-metal contact, the oil bath
significantly extends the life of internal components. Routine oil inspections are simple and
infrequent, supporting long-term reliability.

Easy Installation & Compact Design

Installation is designed to be simple and precise. The AR1693 features a pre-drilled,
precision-machined bolt pattern that aligns with AR pump housings and standard motor mounts,
allowing quick integration into a variety of equipment setups. Its compact, well-balanced design
fits easily into both mobile and stationary cleaning systems without sacrificing space or
stability. Once mounted, the gear box maintains fixed alignment between engine and pump,
eliminating the need for adjustments during operation.

Stable Performance in Demanding Applications

In use, the AR1693 delivers stable, vibration-free performance and consistent torque output. The
2:1 reduction ratio keeps the pump operating within its designed speed range, promoting smooth
hydraulic performance and consistent water pressure while reducing wear on mechanical components.
This optimal speed alignment improves efficiency, reduces noise, and prevents strain on both
engine and pump, extending the overall life of the system.

Quality Assurance & Low Maintenance

Each AR1693 gear box is built under Annovi Reverberi’s strict quality control standards. Every
unit is individually tested for dimensional accuracy, torque consistency, vibration resistance,
and noise control before leaving the factory, ensuring dependable performance in real-world
conditions. Maintenance is minimal thanks to the sealed lubrication system and corrosion-resistant
construction—regular oil checks and occasional replacement are all that is required for
long-lasting service.

Key Features & Applications

• 2:1 reduction gear box for AR high-pressure pump systems
• 1″ input shaft with precision keyway for secure, slip-free coupling
• High-strength cast aluminum or alloy steel housing with corrosion-resistant finish
• Hardened, precision-ground gears for smooth, efficient torque transfer
• Sealed oil bath lubrication system for long life and low maintenance
• Pre-drilled bolt pattern for fast, accurate installation
• Stable, vibration-free performance under continuous high-load operation
• Ideal for commercial pressure washers, industrial cleaning systems, and agricultural sprayers

The AR AR1693 gear box with a 2:1 ratio and 1-inch shaft exemplifies Annovi
Reverberi’s commitment to mechanical precision and industrial durability. Its hardened steel
gears, sealed lubrication system, and balanced design deliver efficient power transfer, reduced
vibration, and quiet operation—providing the strength, control, and reliability needed for
consistent, long-term performance in demanding professional applications.