Enerpac RCH1211 Hollow Plunger Hydraulic Cylinder

Product Description

The ENERPAC RCH1211 is a single-acting hollow plunger hydraulic cylinder designed for high-force lifting, pushing, and pulling applications in industrial and maintenance environments. Built with a steel body, this cylinder operates on single-acting hydraulic actuation, meaning hydraulic pressure extends the plunger and gravity or an external load returns it. The hollow plunger design allows a rod, bolt, cable, or other component to pass through the center, which is a critical feature for tensioning, alignment, and through-hole pressing operations. Licensed hydraulic technicians and millwrights are the typical installers for this class of tool.

The RCH1211 fits into the ENERPAC RCH series of portable hollow plunger cylinders commonly used in structural steel work, bridge maintenance, heavy equipment repair, pipe flange work, and bolt tensioning applications. Its compact retracted length of 4.75 inches and extended length of 6.38 inches make it well suited for confined spaces where a standard solid-plunger cylinder would not fit. The 1.38-inch rod diameter and 0.77-inch center hole diameter accommodate a range of through-bolt and tensioning setups used in both field and shop conditions.

Key Features

• Hollow plunger design allows components to pass through the cylinder centerline for tensioning and alignment work
• Single-acting actuation with 4.49 cubic inch oil capacity for controlled, predictable extension
• Steel body construction for durability in industrial and field service conditions
• Compact stroke: 4.75 inches retracted to 6.38 inches extended, suitable for confined-space applications
• 3/4-16 plunger internal thread and 2-3/4 - 16 collar thread for secure fixture and tooling connections
• Lightweight at 6.2 pounds for portable jobsite use

Compatibility

The RCH1211 is part of the ENERPAC RCH series and is compatible with single-acting hydraulic hand pumps and power units that match the required system pressure and port fittings for this cylinder class.

Installation Notes

Hydraulic cylinders in this class should be installed and operated by qualified hydraulic technicians or millwrights familiar with high-pressure hydraulic systems. Always depressurize the hydraulic circuit and relieve all stored load before connecting or disconnecting the cylinder. Ensure the plunger is fully retracted and the work area is clear before applying hydraulic pressure. Do not exceed the rated capacity of the cylinder or use mismatched fittings, as this creates a risk of sudden load release or fitting failure.