Saylor-Beall 705 Compressor Pumps

Saylor-Beall 705 Series Replacement Pump (3 – 5 HP)

The Saylor-Beall 705 is a legendary heavy-duty, two-stage industrial pump designed to handle the rigorous demands of a full-time shop. Built with American-made cast iron, the 705 is engineered to deliver higher CFM at 175 PSI while maintaining a low RPM. This balance of power and slow rotation ensures that the 705 remains one of the quietest and longest-lasting pumps in its class.

Available Lubrication Configurations

1. Standard Splash Lubrication (Model 705) The most common configuration for general automotive and industrial use.

• Mechanism: Employs rugged dippers on the connecting rods to throw oil onto the internal components. This creates a consistent lubricating mist within the crankcase.
• Benefit: High reliability with minimal maintenance. It is the cost-effective choice for shops where the compressor operates on a standard 50/50 or 60/40 duty cycle.

2. Pressure Lubricated (Model 705-PL / L-Series) The choice for “mission-critical” air and extreme environments.

• Mechanism: Utilizes an integrated oil pump and a rifle-drilled crankshaft. This system pumps filtered oil under pressure directly into the rod bearings and wrist pins.
• Benefit: Essential for continuous-run applications or installations where the pump might be subjected to vibration or slight tilting. The forced-feed system significantly reduces friction heat during long-duration cycles and includes an external oil filter and pressure gauge.

Technical Specifications

• Motor Compatibility: 3 HP to 5 HP
• Pump Design: Two-Stage, V-Twin, Cast Iron
• Displacement: 20.3 CFM @ 840 RPM
• Delivery: * 3 HP: ~11.2 CFM @ 175 PSI
  • 5 HP: ~17.3 CFM @ 175 PSI
• Maximum Pressure: 175 PSI (Intermittent duty up to 250 PSI available with specific builds)
• RPM Range: 500 – 840 RPM
• Flywheel: 16.75″ OD with 2-groove “B” section belt
• Weight: ~210 lbs

Performance Features:

• Cooler Operation: Large cooling fins on the cylinders and a finned intercooler significantly reduce the air discharge temperature, protecting your air tools and dryers.
• Quiet Valve Design: Features high-grade Swedish steel valves that are precision-ground for a tight seal and quiet operation.
• Centrifugal Unloader: Standard on all models to prevent the motor from starting against a head of pressure.