Graco Fire-Ball 300 Series 50:1 Grease Pump - Qty: 2
Graco Fire-Ball® 300 Series 50:1 Grease Pump, 400 lb Drum — P/N 239888 — Qty: 2
Item Overview
This is a pair of new, factory-sealed Graco Fire-Ball® 300 Series 50:1 pneumatic grease pumps, P/N 239888 Series E, purchased in March 2025. Both units are in original Graco OEM packaging.
What is the Graco Fire-Ball® 300?
The Graco Fire-Ball® 300 is the industry-standard pneumatic piston grease pump, with a decades-long reputation as the most reliable and widely deployed grease pump in automotive, industrial, and heavy equipment service applications. The 50:1 ratio model (239888) is designed for medium-pressure, high-volume grease dispensing from 400 lb (180 kg) drums — the largest standard drum size.
The Fire-Ball 300 is a double-acting pump driven by a 3-inch (76.2 mm) differential air motor, delivering reliable fluid flow on both the up and down stroke. Its thick-walled, chrome-plated displacement rod and hardened steel construction make it exceptionally durable in demanding service environments.
Technical Specifications
| Attribute | Value |
| Graco Part Number | 239888 (Series E) |
| Pump Ratio | 50:1 |
| Drive Type | Air-powered pneumatic piston |
| Air Motor Diameter | 3 in (76.2 mm) |
| Drum Size | 400 lb (180 kg) |
| Maximum Working Pressure | 8,400 psi (58 MPa, 580 bar) |
| Maximum Air Inlet Pressure | 168 psi (1.16 MPa, 11.6 bar) |
| Cycles per Gallon | 345 |
| Flow Rate | ~1.19 lb/min |
| Compatible Material | Grease up to NLGI #2 |
| Pump Action | Double-acting |
| Weight | 22 lbs (10 kg) |
| Outlet | 1/2 in NPT |
| Air Inlet | 1/2 in NPT |
Typical Applications
The Graco 239888 Fire-Ball 300 is used across a wide range of industries and applications:
•Mining and heavy equipment: Drum-mounted grease dispensing for haul trucks, shovels, and heavy machinery maintenance bays
•Oil & gas: Grease dispensing in field maintenance and service facilities
•Automotive and fleet service: Lubrication bays, fast lube centers, truck dealerships
•Industrial maintenance: Any centralized or manual grease dispensing application requiring a 400 lb drum pump
The 50:1 ratio provides sufficient output pressure for most standard grease dispensing applications, including high-pressure grease fittings and centralized lube systems.