The O'Keefe Group, Inc.
The RamJet RJ-450 is excellent for distribution centers, warehouses, and general industrial use. The extra large 60" x 67 1/2" clear top opening accepts those large, bulky items with ease. Ruggedly built to meet the challenge, this unit packs a powerful 56,500 pounds of crushing force. And, the RJ-450 is built for performance and reliability as only Marathon, the solid waste industry's specialist in on-site compaction systems, can provide.

Compactors can be fitted with custom hoppers, tread plates, hand & toe rails, security chutes, cart dumpers and other optional equipment.
Unit of Measure


Charge Box Capacity - Mfrs. Rating

N/A 4.0 yd³3.06 m³

Charge Box Capacity - WASTEC Rating

N/A 2.95 yd³2.25 m³

Clear Top Opening Length

N/A 67 1/2 in1715 mm

Clear Top Opening Width

N/A 60 in1524 mm

Industry Standards/Certifications

Industry Standards/Certifications

Performance Characteristics

Cycle Time

N/A 50 sec

Total Normal Force

N/A 48100 lbf214 kN

Total Maximum Force

N/A 56500 lbf251 kN

Normal Ram Face Pressure

N/A 23.9 psi165 kPa

Maximum Ram Face Pressure

N/A 28.1 psi194 kPa

Ram Penetration

N/A 13 in330 mm

Electrical Equipment

Electrical Motor Power (3/60 to 208/230/460)

N/A 15 hp11.1 kW

AC Electrical Control Voltage

N/A 120 V


N/A ANSI Regulation Z245.2 NEMA OSHA UL Listed

Electrical Equipment Specifications

  • UL Labeled Panel Box: Type NEMA 3R, All Circuits Fused
  • Standard 2 Button Controls: Keylock Start/ Mushroom Stop
  • Connected to 13' Sealtite

Hydraulic Equipment

Hydraulic Pump Capacity

N/A 18.5 gpm70 L/min

Normal Pressure

N/A 1700 psi117 bar

Maximum Pressure

N/A 2000 psi138 bar

Hydraulic Cylinder Bore Diameter

N/A 6 in152 mm

Hydraulic Cylinder Rod Diameter

N/A 4 in102 mm


N/A 6900 lbs3130 kg

Industrial Grade System

N/A The RJ-450 features industrial grade electrical and hydraulic systems that are totally UL Listed! This means trouble free operation and top performance year after year. Marathon's side-mounted power unit combines the convenience and ease-of-maintenance that comes with a remote power pack with the space savings and ease-of-installation of an integrated power pack.

Ram Guide System

N/A The packing ram is supported by specially formulated cast iron shoes which ride on replaceable wear strips. This exclusive design protects the charge box floor from the full force of the packing ram, extending its life and dramatically reducing compaction-robbing friction.

General Description


  • The Pump on Marathon's high performance Side-Mounted Power Unit is secured to a "C" flange motor with a machined bracket that guarantees coupling alignment. The Limit Switch (arrow) and all other parts of the power unit are easily accessible for ease-of-maintenance. The Reset Button for the Motor Starter is also located on the outside which eliminates entry into the control box.
  • The RJ-450 is totally UL listed! The controls are key-operated and fully automatic. The heavy duty push button controls are contained in a weatherproof NEMA 13 enclosure. Connected to the power pack with 13’ of sealtite, the controls can be located for operator convenience.


N/A Pictures in this literature are illustrative only. Specifications are subject to change without notice in order to accommodate improvements to the equipment. Certified in compliance with ANSI Regulation Z245.2, all OSHA standards, and certified under WASTEC's Stationary Compactor Certification Program. Products must be used with safe practice and in accordance with said regulations and standards.