Eames No. 4 Mandrel Press | 112:1 Compound Leverage | Floor Stand

This Eames No. 4 Compound Mandrel Press is a heavy-duty, floor-type manual press engineered for high-tonnage industrial tasks such as broaching, assembly, and straightening. As the historical predecessor to the Atlas and Dake designs, the Eames No. 4 is highly regarded for its massive cast-iron frame and efficient ratcheting compound leverage mechanism.

Eames No. 4 Compound Leverage Arbor Press

Manufacturer: Evansville Arbor Press Co. (G.T. Eames)

Model: No. 4 Compound

Capacity: 12 Tons

Technical Specifications:

• Tonnage: 12 Tons
• Leverage Ratio: 112:1 (Compound Mode)
• Ram Size: 2" x 2" x 24" (Square)
• Throat Depth: 10.5"
• Max Work Diameter: 20"
• Max Ram to Table: ~24" – 26" (Adjustable)
• Operation: Compound ratcheting with sliding pin for quick conversion to single leverage.
• Base Type: Integrated floor pedestal with bolt-down feet.
• Approximate Weight: 1,350 lbs

Key Features & Dealer Notes:

• Compound Leverage Advantage: The 112:1 ratio allows an operator to exert 12 tons of pressure with minimal manual effort. The ratcheting handle allows for optimal lever positioning during the stroke, while the handwheel provides rapid ram advance to the workpiece.
• Heavy-Duty Construction: Built with a reinforced, flanged-spine cast iron frame. This design minimizes deflection under max load, ensuring the ram stays perfectly perpendicular to the work surface.
• Versatile Table Design: Features a rack-and-pinion adjustable table, allowing for quick height changes to accommodate various workpiece sizes. The slotted table base supports mandrel and arbor work with ease.
• Mechanical Reliability: Simple, robust gear design with a manual counterweight for rapid ram return. Unlike hydraulic presses, this manual unit offers "felt" pressure and requires zero electrical or hydraulic maintenance.
• Historical Pedigree: Genuine Eames/Evansville castings are prized not only for their 100+ year service life but also for their collectibility among industrial machinery enthusiasts.