AR28689 | RTD Reduction Gear Box, 1:2.22 Ratio Drive

Overview

The AR AR28689 RTD Reduction Gearbox – 1:2.22 Ratio is a high-torque, precision-engineered
drive unit developed by Annovi Reverberi for demanding industrial and commercial pump systems that need
controlled output speed, consistent power transfer, and long-term reliability. By reducing input RPM and
amplifying torque, it allows high-capacity pumps to run at their ideal speed with smooth, stable
performance.

Built from a rigid, corrosion-resistant housing with hardened helical gears, sealed oil-bath lubrication,
and heavy-duty bearings, the AR28689 is designed for continuous duty in harsh environments. From
industrial cleaning rigs and washdown skids to agricultural sprayers and hydraulic-driven systems, it
delivers efficient torque conversion, quiet operation, and reduced mechanical strain on connected
equipment.

Key Features & Applications

1:2.22 Reduction Ratio & Speed Control

• 1:2.22 reduction converts high-RPM engine or motor input into lower-speed, high-torque output.
• Keeps the pump running in its most efficient RPM range for better pressure consistency and flow regulation.
• Reduces mechanical strain and energy loss, extending pump life in continuous-duty service.
• Ideal for high-capacity pumps driven by compact engines or electric motors that must not be over-sped.

Heavy-Duty Housing & Structural Design

• Robust cast aluminum or steel alloy housing resists vibration, heat, and torsional stress.
• Excellent strength-to-weight ratio for stability plus easier handling and installation.
• Smooth exterior finish promotes efficient heat dissipation during long run times.
• Rigid frame maintains precise shaft alignment for trouble-free operation in rugged environments.

Hardened Helical Gear Train

• Precision-ground helical gears made from hardened alloy steel for durability and quiet running.
• Gradual tooth engagement reduces mechanical shock and vibration compared with straight-cut gears.
• Efficient torque transmission improves overall system performance and protects pump and engine shafts.
• Optimized geometry minimizes internal power losses for better mechanical efficiency.

Sealed Oil-Bath Lubrication System

• Fully sealed oil-bath lubrication provides constant film strength on gears and bearings.
• High-quality seals and gaskets prevent oil leaks and keep out dust, water, and debris.
• Integrated sight glass makes oil-level inspection quick and simple.
• Vented fill cap and drain plug allow easy oil changes without disassembling the gearbox.

Heavy-Duty Bearings & Shaft Support

• Oversized bearings support radial and axial loads while maintaining tight gear alignment.
• Continuous lubrication prevents overheating during sustained high-pressure operation.
• Stable shaft support reduces wear on gears, couplings, and connected pumps.
• Engineering focus on bearing life contributes to long, low-maintenance service intervals.

Installation, Fitment & System Integration

• Precision-machined input and output shafts for direct coupling to standard engine drives and AR pump shafts.
• Flanged, drilled mounting pattern for quick bolt-on installation with accurate alignment.
• Direct-drive layout eliminates belts and pulleys, reducing vibration and energy loss.
• Compact, balanced form factor fits easily into skids, trailers, mobile rigs, and stationary frames.

Performance in Real-World Applications

• Provides stable, efficient torque delivery so pumps run smoothly even under heavy or variable loads.
• Controls pump speed to prevent over-speeding, cavitation, and premature component wear.
• Enhances volumetric efficiency and maintains reliable output pressure for high-capacity systems.
• Well suited to industrial cleaning, municipal maintenance, agricultural irrigation, and other
  high-duty pump applications.

Maintenance & Quality Assurance

• Routine oil checks via sight glass and scheduled oil changes keep components fully protected.
• Sealed housing and corrosion-resistant materials minimize contamination and external maintenance needs.
• Each unit is factory-tested for vibration, torque balance, noise level, and gear alignment.
• Quality control ensures consistent, professional-grade performance across all operating conditions.

Summary

• Model: AR AR28689 RTD Reduction Gearbox – 1:2.22 Ratio
• Purpose: High-torque reduction gearbox for matching high-RPM drives to large pumps at lower, safer speeds.
• Construction: Hardened helical gears, heavy-duty cast housing, sealed oil-bath lubrication, and robust bearings.
• Ideal For: High-capacity pressure pumps, agricultural machinery, hydraulic-driven systems, and industrial wash rigs requiring quiet, efficient, and low-maintenance power transmission.