AR28687 | RTD Reduction Gear Box, 1:1.5 Ratio Drive

Overview

The AR AR28687 RTD Reduction Gearbox – 1:1.5 Ratio is a precision-engineered drive unit
developed by Annovi Reverberi to deliver efficient torque conversion, stable power transmission, and
long-term reliability in industrial pump systems. Installed between an engine or motor and a high-pressure
pump, this gearbox optimizes speed reduction and torque balance so the pump can run in its ideal RPM range
with minimal stress.

Built with a robust housing and hardened helical gears, the RTD gearbox provides smooth, quiet operation
under continuous-duty conditions. Its compact footprint, standardized shafts, and dependable lubrication
system make it a smart choice for pressure washers, industrial cleaning units, agricultural sprayers, and
other hydraulic applications where mechanical efficiency and uptime are critical.

Key Features & Applications

1:1.5 Reduction Ratio & Speed Control

• 1:1.5 reduction slows engine or motor RPM to match the pump’s optimal operating speed.
• Increases available torque to the pump, reducing mechanical strain and improving startup performance.
• Helps maintain stable system pressure and smoother hydraulic performance across load changes.
• Prevents over-speed and potential cavitation in the pump, extending seal, plunger, and bearing life.

Heavy-Duty Housing & Structural Design

• High-strength cast aluminum or steel housing provides rigidity and thermal stability.
• Corrosion-resistant exterior suited to wash bays, mobile rigs, agricultural and industrial environments.
• Smooth, machined surfaces promote proper sealing and efficient heat dissipation during long duty cycles.
• Designed for continuous professional use where reliability and structural integrity are essential.

Hardened Helical Gear Train

• Precision-ground helical gears deliver quiet, low-vibration torque transfer.
• Hardened steel teeth resist wear under continuous load and high torque conditions.
• Gradual tooth engagement reduces mechanical shock compared to straight-cut gears.
• Internal geometry is optimized to minimize energy loss and maximize power transmission efficiency.

Bearings, Seals & Lubrication System

• Heavy-duty bearings maintain precise gear alignment under dynamic loads.
• Oil-bath lubrication ensures consistent coverage at various mounting angles, reducing friction and heat.
• Sealed design with quality seals and vented oil cap helps keep out water and debris.
• Simple oil-level checks and scheduled changes support long service life with minimal maintenance.

Installation, Alignment & Form Factor

• Precision-machined input shaft matches standard engine or motor drives for easy coupling.
• Output shaft is sized and aligned for direct connection to AR pump couplings.
• Compact, balanced housing integrates easily into horizontal or vertical layouts with limited space.
• Pre-aligned flanges and mounting holes simplify bolting, reduce setup time, and ensure proper alignment.

Performance Benefits in Operation

• Provides smooth torque conversion and constant speed control, even under fluctuating loads.
• Reduces vibration and uneven loading on pumps, motors, seals, and couplings.
• Improves overall fuel or energy efficiency by allowing both engine and pump to operate in their sweet spot.
• Lowers maintenance intervals and total operating cost by reducing mechanical fatigue.

Typical Applications

• Industrial and commercial pressure washer systems and wash bays.
• Mobile trailer and skid-mounted cleaning units for contractors.
• Agricultural washdown and spraying equipment.
• Heavy-duty hydraulic and water transfer systems requiring reliable speed reduction.

Summary

• Model: AR AR28687 RTD Reduction Gearbox – 1:1.5 Ratio
• Purpose: Match high-RPM engines or motors to lower-RPM pumps with increased torque and stability.
• Construction: Hardened helical gears, heavy-duty housing, sealed bearings, and oil-bath lubrication.
• Ideal For: Industrial pump systems, pressure washers, and hydraulic applications that demand quiet,
  efficient, and long-lasting power transmission.