AR1691 | Gear Box for XM Pump, 3/4 in Shaft

AR1691 | Gear Box for XM Pump, 3/4 in Shaft

AR1691 Gear Box – 3/4″ Shaft for XM Series Pumps
The AR1691 gear box is a compact, high-performance transmission component engineered by Annovi
Reverberi to provide reliable, efficient power transfer between engines or motors and AR XM series
high-pressure pumps. Designed for durability, precision, and balance, this gear box features a
3/4-inch shaft and maintains optimal torque alignment and speed reduction for consistent pump
performance in professional cleaning and industrial applications. With its rugged housing,
precision-ground gears, and sealed lubrication system, the AR1691 ensures smooth operation, quiet
performance, and long-term mechanical stability under continuous use.

Rugged Housing & Corrosion Resistance

Constructed from corrosion-resistant cast aluminum or machined alloy steel, the AR1691 housing
offers an ideal combination of strength and lightweight handling. The rigid structure minimizes
vibration and torsional stress while maintaining precise internal gear alignment during extended
operation. A corrosion-resistant finish protects against moisture, detergents, and chemical
exposure, ensuring reliable performance in harsh environments such as wash bays, industrial
cleaning facilities, and outdoor job sites. This durable housing withstands high mechanical loads
while supporting smooth, balanced operation over thousands of service hours.

Optimized Gear Ratio & Internal Components

Inside the AR1691, hardened and precision-ground steel gears provide efficient torque conversion
and quiet, consistent performance. The gear ratio is carefully optimized to match engine or motor
speeds with the ideal operating range of AR XM pumps, allowing precise control of flow and
pressure. This controlled reduction prevents over-speeding, enhances energy efficiency, and
reduces wear on critical components. Smooth gear engagement minimizes vibration, mechanical noise,
and energy loss, contributing to steady pump output and extended service life.

3/4″ Shaft & Bearing Support

Both the input and output shafts are supported by heavy-duty bearings that reduce friction and
maintain alignment during high-speed rotation. The 3/4-inch input shaft features a
precision-cut keyway to ensure a secure, slip-free connection to the engine or motor. On the
output side, the shaft interfaces directly with AR XM pump models, aligning accurately to
maintain balanced power transmission. This precise fitment prevents misalignment and vibration,
protecting seals, couplers, and bearings from unnecessary wear and ensuring reliable operation in
demanding cleaning systems.

Sealed Oil Bath Lubrication

The AR1691 operates within a sealed oil bath lubrication system that provides continuous
lubrication and cooling for all moving parts. The closed design prevents contamination from
water, dust, or detergents, ensuring smooth internal motion and reduced maintenance
requirements. The oil bath minimizes friction, dissipates heat, and prevents gear wear, resulting
in long-term dependability. Routine checks of oil level and condition are simple and infrequent,
making this gear box a low-maintenance solution for professional operators.

AR1691 | Gear Box for XM Pump, 3/4 in Shaft

Easy Installation & Compact Footprint

Installation of the AR1691 is straightforward and user-friendly. The precision-machined bolt
pattern and integrated mounting flanges align perfectly with AR XM pump housings and standard
engine or motor configurations, allowing quick, secure assembly without modification. Compact
dimensions make it suitable for both mobile and stationary equipment, conserving space while
providing solid mechanical stability. Once installed, the gear box maintains permanent alignment,
eliminating the need for frequent adjustments or realignment.

Professional Performance & Quality Assurance

In operation, the AR1691 delivers stable, smooth, and quiet performance. Precision gearing
ensures efficient power transfer with minimal vibration, protecting both pump and engine from
strain. Optimized torque conversion keeps pumps within their intended speed and pressure range,
producing consistent flow, higher efficiency, and reduced fuel or power consumption. Each AR1691
gear box is manufactured to Annovi Reverberi’s strict standards and undergoes rigorous testing
for torque capacity, noise level, vibration control, and alignment accuracy to guarantee
dependable, real-world performance.

Key Features & Applications

• Compact gear box for AR XM series high-pressure pumps
• 3/4″ input shaft with precision keyway for slip-free coupling
• Corrosion-resistant cast aluminum or alloy steel housing
• Hardened, precision-ground steel gears for smooth torque conversion
• Sealed oil bath lubrication system for long life and low maintenance
• Heavy-duty bearings for accurate shaft support and reduced friction
• Precision bolt pattern and flanges for fast, accurate installation
• Ideal for professional pressure washers, agricultural sprayers, and industrial cleaning systems

The AR AR1691 gear box for XM pumps with a 3/4-inch shaft represents Annovi
Reverberi’s dedication to precision engineering, durability, and performance. With hardened steel
gears, a sealed oil bath, and corrosion-resistant construction, it delivers efficient torque
transfer, stable power alignment, and dependable long-term operation. Ideal for demanding,
high-pressure applications, the AR1691 provides quiet, vibration-free performance and
low-maintenance reliability for professional cleaning and industrial equipment.