Product Overview

The Interpump RS500 Reduction Gearbox is a heavy-duty gearbox designed for use with petrol engines and professional pump systems. Built for reliability and efficiency, this gearbox suits Acme, Aspera Motors, Briggs & Stratton, Honda, Co.Ti.Emme, Intermotor, Lombardini, Ruggerini, and other compatible petrol engines.

Engineered with a 2.2:1 reduction ratio, the RS500 gearbox ensures optimal torque and power transfer, making it ideal for use with Interpump 47, 59, and 66 series pumps. Its rugged construction, SAE J609 A-B flange compatibility, and 1" (25.4mm) hollow shaft guarantee a secure and efficient connection in demanding industrial applications.

Key Features

✅ Gear Ratio 2.2:1 – Converts engine speed for maximum torque and pump efficiency
✅ Compatible Engines – Acme, Honda, Briggs & Stratton, Lombardini, Ruggerini & more
✅ Compatible Pumps – Interpump WS82, WS92, WS101, WS102, WS131, WS132, WS133, WS151, WS152, WS171, WS162, WS201, WS202, SW1513, SW1515, SW1518, SW1521
✅ High Power Capacity – Supports up to 25 Hp (18.5 kW) engines
✅ Durable Construction – Built for industrial and professional cleaning systems
✅ Precision Speed Control – Input speed: 3100 rpm / Output speed: 1425 rpm
✅ Flange Standard – SAE J609 A-B for easy installation and secure fit

Specifications

• Part No: RS500

• Gear Ratio: 2.2:1

• Flange Compatibility: SAE J609 A-B

• Engine Shaft Size: 1" (25.4mm) hollow

• Pump Shaft Size: 24mm

• Max Power Capacity: 25 Hp / 18.5 kW

• Input Speed: 3100 rpm

• Output Speed: 1425 rpm

• Compatible Pump Series: Interpump 47, 59, 66 series

Applications

✔️ Industrial Pumps – Reliable speed & torque conversion for heavy-duty pumps
✔️ Engine-Driven Systems – Efficient gearbox for petrol-driven machinery
✔️ Professional Cleaning Equipment – Perfect for high-performance pressure washer systems

Why Choose the Interpump RS500?

The Interpump RS500 gearbox is the trusted choice for professionals who need durability and efficiency in demanding setups. With its precision engineering, high torque transfer, and compatibility across multiple engines and pump series, this gearbox delivers long-lasting performance in industrial and cleaning applications.