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Enerpac RCH306 Steel Hollow-Plunger Hydraulic Cylinder

American-engineered 30-ton steel hollow-plunger hydraulic cylinder featuring a 155 mm stroke, 700 bar working pressure, single-acting spring return, and robust steel construction weighing 21.8 kg.

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 Product Overview

The Enerpac RCH306 is a heavy-duty steel hollow-plunger hydraulic cylinder engineered for demanding pushing, pulling, tensioning, and extraction applications. Manufactured by Enerpac, this single-acting cylinder utilizes high-pressure hydraulic force to advance the plunger, integrated with a heavy-duty internal spring mechanism for reliable automatic retraction when pressure is released.

Featuring a durable steel body with a painted finish, the RCH306 is built to withstand harsh jobsite conditions and heavy industrial use. Its hollow-plunger center opening allows threaded rods, cables, or anchor bolts to pass directly through the cylinder body, providing high hydraulic force for specialized geotechnical anchoring, structural tensioning, and heavy maintenance tasks up to 10,000 psi (700 bar).

 Key Applications

  • Cable, tie-back anchor, and structural rod tensioning in foundation and civil engineering.
  • Heavy structural bolt pulling and extraction in steel construction and bridge maintenance.
  • High-force pressing, alignment, and positioning of industrial machinery components.
  • Heavy-duty pulling and pushing tasks requiring durable steel hydraulic cylinders.

Condition & Availability

This unit is offered in used condition (perfect condition) and is fully functional, inspected, and ready for operation.

Why Buy From Us

  • Expert technical support
  • Equipment inspection and verification
  • Competitive pricing
  • Trusted supplier for foundation equipment

Additional information

Weight 668 kg
Manufacturer / Brand

Enerpac (USA)

Model / Type

RCH306

Equipment Series

Enerpac RCH Series

Cylinder Type

Single-Acting, Spring-Return, Hollow-Plunger Hydraulic Cylinder

Nominal Capacity Class

30 Ton Class (326 kN Stated Capacity)

Max Working Pressure

10,000 PSI / 700 Bar

Stroke Length

155 mm (6.13 in)

Center Hole Diameter

33.3 mm (1.31 in)

Retracted / Closed Height

330 mm (13.00 in)

Extended Height

485 mm (19.13 in)

Outside Diameter

114 mm (4.50 in)

Plunger / Saddle Diameter

Approx. 63.5 mm (2.50 in)

Effective Hydraulic Area

46.6 cm² (7.22 in²)

Oil Required to Advance

722 cm³ (44.23 in³)

Collar Thread

4 1/2 in – 12

Internal Plunger Thread

1 13/16 in – 16 UN

Base Mounting Pattern

3/8 in – 16 UNC (Bolt Circle: 92.2 mm / 3.63 in)

Hydraulic Coupler

Enerpac CR400 Type

Body Material / Finish

Steel Body; Painted Finish

Product Weight

Approx. 21.8 kg (48 lb)