Enerpac rrh-307 Hollow Plunger Hydraulic Ram 30 Ton

Product Description

The ENERPAC rrh-307 is a double-acting hollow plunger hydraulic ram rated for 30-ton nominal push capacity. It connects to a hydraulic pump to generate controlled linear force for lifting, pressing, and positioning heavy loads. The hollow piston design accepts a threaded rod, enabling both push and pull applications from a single unit. Maximum working pressure is 10,000 psi. The steel body construction provides durability in industrial and field service environments. Licensed hydraulic technicians and mechanical contractors install this type of ram in maintenance, construction, and fabrication applications requiring high-force output in a compact cylinder envelope.

The rrh-307 is suited for general-purpose industrial work where a double-acting hollow cylinder is needed. Common scenarios include structural alignment, equipment installation, press-fit operations, and heavy-load lifting where a threaded rod pull-back setup is required. The 7-inch stroke and 13-inch retracted height make it practical in confined setups. With an effective push area of 7.22 square inches and an oil capacity of 50.55 cubic inches for the push stroke, the unit delivers consistent, repeatable force output across a range of horizontal and vertical orientations.

Key Features

• Double-acting cylinder enables both push and pull force through the hollow plunger
• 30-ton maximum push capacity at 10,000 psi working pressure
• 7-inch stroke with 13-inch retracted height and 20-inch extended height
• Steel body construction for industrial durability
• Includes dust cap and female coupler for immediate pump connection
• Base mounting threads and collar threads allow fixed or guided installation setups

Compatibility

Designed as an OEM-style general-purpose double-acting hollow plunger hydraulic ram compatible with hydraulic pump systems operating at up to 10,000 psi with standard coupler fittings.

Installation Notes

Installation and operation of high-pressure hydraulic rams should be performed by qualified hydraulic technicians or mechanical contractors familiar with high-pressure fluid systems. Always depressurize the hydraulic circuit completely before connecting or disconnecting the ram. Inspect all fittings, hoses, and couplers for damage before pressurizing the system. Never exceed the 10,000 psi rated working pressure and ensure the load path is properly aligned to avoid side-loading the plunger.

Technical Specifications

• Nominal Capacity: 30 ton
• Max Push Capacity: 30 ton
• Max Pressure: 10,000 psi
• Effective Push Area: 7.22 sq in
• Stroke Length: 7 inches
• Retracted Height: 13 inches
• Extended Height: 20 inches
• Outside Diameter: 4.5 inches
• Plunger Diameter: 2.5 inches
• Center Hole Diameter: 1.31 inches
• Plunger Thread Size: 1-13/16 in-16
• Collar Thread Size: 4-1/2 in-12
• Base Bolt Circle Diameter: 3.63 inches
• Base Mounting Thread Size: 3/8 in-16
• Oil Capacity Push: 50.55 cu in
• Cylinder Type: Hollow Plunger
• Single Acting / Double Acting: Double Acting
• Body Material: Steel
• Includes: Dust Cap, Female Coupler
• Series: RRH
• UNSPSC: 27121604
• Country of Origin: China (subject to change)

Standard Information

• Brand: ENERPAC
• Manufacturer Part Number: rrh-307