Enerpac Hollow Plunger Hydraulic Cylinder Specifications
Compare Enerpac hollow plunger hydraulic cylinders for pulling, pushing, lifting, tensioning, testing, positioning and industrial maintenance. Review RCH, RRH, RACH and RARH models by capacity, stroke, center-hole diameter, collapsed height and hydraulic oil requirement.
Northland Air Hydraulics supplies and supports Enerpac hydraulic cylinders from Edmonton, Alberta. Need help matching a hollow plunger cylinder with the correct pump, hose, pressure gauge, couplers, saddle, threaded rod or control valve? Northland can help review the complete hydraulic setup.
Push, Pull & Tension With One Cylinder Design
The hollow plunger allows rod, bar, cable or other components to pass through the cylinder, creating a versatile hydraulic solution for pushing, pulling, tensioning, testing, lifting and equipment service.
Hydraulic Force in Both Push & Pull Applications
Hollow plunger hydraulic cylinders provide a center opening through the cylinder so threaded rod, cable, bar or other work pieces can pass through the plunger. This makes them especially useful for tensioning, pulling, pressing, testing, lifting and maintenance applications that a conventional solid-plunger cylinder cannot perform as easily.
The hollow plunger allows force to be applied around rod, cable or other components for both pushing and pulling work.
Hollow cylinders are well suited to controlled tensioning applications where threaded rod, strand or bar must pass through the cylinder.
RCH and RACH cylinders use spring return for simpler hydraulic systems where powered retraction is not required.
RRH and RARH cylinders provide hydraulic power in both directions for faster, more controlled retraction.
Steel RCH and RRH models provide traditional industrial durability, while RACH and RARH aluminum models reduce cylinder weight for easier handling.
Hollow plunger cylinders can support construction, bridge work, mining, heavy equipment, manufacturing, testing and industrial maintenance applications.
Compare Enerpac Hollow Plunger Cylinder Types
Open a series below to compare models, technical specifications, features, typical applications and common industries.
Capacity-class tonnage is commonly used to identify a hydraulic cylinder family. For load calculations and system selection, use the listed maximum capacity for the specific cylinder model and confirm all system components are adequately rated.
RCH
Enerpac RCH Single-Acting Hollow Plunger Cylinders
12–100 Ton Classes • 0.31–6.13" Stroke • Spring Return
RCH Series — Single-Acting Hollow Plunger Cylinders
Enerpac RCH hollow plunger hydraulic cylinders combine a single-acting spring-return design with a center hole that allows both pulling and pushing applications. Capacity classes range from 12 to 100 tons, with strokes from 0.31 to 6.13 inches and center-hole diameters from 0.77 to 3.11 inches.
Where RCH Hollow Plunger Cylinders May Be Used
RCH cylinders may be used for pulling, pushing, lifting, tensioning, testing, pin removal, mechanical disassembly, equipment alignment and industrial maintenance. The center hole can accommodate rod, bar or strand where force must be applied around or through the work piece.
Applications for Enerpac RCH Cylinders
Single-acting hollow plunger cylinders can support work across infrastructure, bridge construction, mining, manufacturing, oil and gas, utilities and industrial maintenance.
These are common examples and are not an exhaustive list. Enerpac RCH hollow plunger cylinders may also be used in other pulling, pushing, lifting, tensioning, testing, positioning and maintenance applications where the required capacity, stroke, center-hole diameter and hydraulic system configuration are suitable.
RCH Series Features
- Hollow plunger design permits both pulling and pushing forces.
- Single-acting, spring-return operation.
- Nickel-plated floating center tube on models over 20 tons helps increase product life.
- Baked enamel finish improves corrosion resistance.
- Collar threads allow easier fixturing.
- Most models use smooth hollow saddles, with optional threaded saddles available on selected models.
- RCH120 uses an AR630 coupler and 1/4-inch NPTF port.
- RCH121 and RCH1211 use an FZ1630 reducer with AR630 coupler.
- Other RCH models use CR400 couplers.
| Capacity Class | Maximum Capacity (tons) | Model | Stroke (in) | Effective Area (in²) | Oil Capacity (in³) | Collapsed Height (in) | Center Hole (in) |
|---|---|---|---|---|---|---|---|
| 12 ton | 13.8 | RCH120 | 0.31 | 2.76 | 0.86 | 2.19 | 0.77 |
| 12 ton | 13.8 | RCH121 | 1.63 | 2.76 | 4.49 | 4.75 | 0.77 |
| 12 ton | 13.8 | RCH1211 | 1.63 | 2.76 | 4.49 | 4.75 | 0.77 |
| 12 ton | 13.8 | RCH123 | 3.00 | 2.76 | 8.29 | 7.25 | 0.77 |
| 20 ton | 23.6 | RCH202 | 2.00 | 4.72 | 9.46 | 6.38 | 1.06 |
| 20 ton | 23.6 | RCH206 | 6.10 | 4.72 | 28.67 | 12.05 | 1.06 |
| 30 ton | 36.1 | RCH302 | 2.50 | 7.22 | 18.05 | 7.03 | 1.31 |
| 30 ton | 36.1 | RCH306 | 6.13 | 7.22 | 44.23 | 13.00 | 1.31 |
| 60 ton | 63.6 | RCH603 | 3.00 | 12.73 | 38.20 | 9.75 | 2.12 |
| 60 ton | 63.6 | RCH606 | 6.00 | 12.73 | 76.41 | 12.75 | 2.12 |
| 100 ton | 103.1 | RCH1003 | 3.00 | 20.63 | 61.88 | 10.00 | 3.11 |
RRH
Enerpac RRH Double-Acting Hollow Plunger Cylinders
30–660 Ton Classes • 1.50–10.13" Stroke • Powered Retract
RRH Series — Double-Acting Hollow Plunger Cylinders
Enerpac RRH hollow plunger cylinders provide hydraulic force during both advance and retract. This gives controlled powered retraction for demanding pulling, pushing, tensioning, testing and industrial maintenance applications. The current RRH range extends from the 30-ton through 660-ton capacity classes.
Where RRH Double-Acting Hollow Cylinders May Be Used
RRH cylinders may be used for bridge launching, heavy tensioning, pulling, pushing, testing, equipment positioning, machinery maintenance and applications where controlled hydraulic retraction is important. The hollow plunger also allows threaded rod, strand or bar to pass through the cylinder.
Applications for Enerpac RRH Cylinders
Double-acting hollow plunger cylinders may support major infrastructure, bridge construction, mining, heavy equipment, industrial manufacturing, oil and gas and large maintenance projects.
These are common examples and are not an exhaustive list. Enerpac RRH double-acting hollow plunger cylinders may also be used in other high-force pulling, pushing, tensioning, testing, positioning and lifting applications where the required capacity, stroke, center-hole diameter and hydraulic controls are suitable.
RRH Series Features
- Double-acting design provides hydraulic advance and powered retract.
- Hollow plunger allows both pulling and pushing forces.
- Relief valves help prevent damage from accidental over-pressurization.
- Baked enamel finish improves corrosion resistance.
- Nickel-plated floating center tube improves product life.
- Plunger wiper reduces contamination and helps extend cylinder life.
- CR400 couplers and dust caps are included on all models.
- Collar threads permit fixturing on applicable models.
- Smooth hollow saddles are standard, with threaded hollow saddle options for selected models.
A double-acting hollow plunger cylinder requires a hydraulic pump and control arrangement suitable for double-acting operation, typically using a 4-way valve.
| Capacity Class | Maximum Advance (tons) | Maximum Retract (tons) | Model | Stroke (in) | Area Advance (in²) | Area Retract (in²) | Oil Advance (in³) | Oil Retract (in³) | Collapsed Height (in) | Center Hole (in) |
|---|---|---|---|---|---|---|---|---|---|---|
| 30 ton | 36 | 24 | RRH307 | 7.00 | 7.22 | 4.71 | 50.55 | 32.99 | 13.00 | 1.31 |
| 30 ton | 36 | 24 | RRH3010 | 10.13 | 7.22 | 4.71 | 73.12 | 47.71 | 17.00 | 1.31 |
| 60 ton | 64 | 42 | RRH603 | 3.50 | 12.73 | 8.37 | 44.57 | 29.21 | 9.75 | 2.13 |
| 60 ton | 64 | 42 | RRH606 | 6.50 | 12.73 | 8.37 | 82.77 | 54.24 | 12.75 | 2.13 |
| 60 ton | 64 | 42 | RRH6010 | 10.12 | 12.73 | 8.37 | 128.94 | 84.49 | 17.25 | 2.13 |
| 100 ton | 103 | 68 | RRH1001 | 1.50 | 20.63 | 13.54 | 30.94 | 20.32 | 6.50 | 3.13 |
| 100 ton | 103 | 68 | RRH1003 | 3.00 | 20.63 | 13.54 | 61.88 | 40.64 | 10.00 | 3.13 |
| 100 ton | 103 | 68 | RRH1006 | 6.00 | 20.63 | 13.54 | 123.76 | 81.29 | 13.50 | 3.13 |
| 100 ton | 103 | 68 | RRH10010 | 10.13 | 20.63 | 13.54 | 208.84 | 137.17 | 18.13 | 3.13 |
| 150 ton | 158 | 80 | RRH1508 | 8.00 | 31.62 | 15.91 | 252.97 | 127.23 | 13.75 | 3.13 |
| 240 ton | 243 | 108 | RRH2308 | 7.87 | 47.94 | 21.42 | 377.30 | 168.60 | 16.97 | 4.13 |
| 450 ton | 453 | 188 | RRH4008 | 7.87 | 89.39 | 37.15 | 703.50 | 292.49 | 19.13 | 4.33 |
| 660 ton | 667 | 213 | RRH6008 | 7.87 | 131.47 | 42.00 | 1034.80 | 330.57 | 20.67 | 5.31 |
RACH
Enerpac RACH Aluminum Hollow Plunger Cylinders
20–150 Ton Classes • 1.97–9.84" Stroke • Spring Return
RACH Series — Aluminum Single-Acting Hollow Plunger Cylinders
Enerpac RACH cylinders provide hollow-plunger versatility in a lightweight aluminum design. The single-acting spring-return range covers 20 through 150 ton capacity classes with strokes from 1.97 to 9.84 inches and center-hole diameters from 1.06 to 3.11 inches.
Where RACH Aluminum Hollow Cylinders May Be Used
RACH cylinders may be used for field tensioning, testing, pin extraction, mechanical disassembly, equipment maintenance, pulling and pushing where reducing cylinder weight improves portability and handling. Their hollow plunger allows rod, strand or other components to pass through the cylinder.
Applications for Enerpac RACH Cylinders
Lightweight hollow plunger cylinders may support field work across municipal and fleet maintenance, construction, utilities, manufacturing, oil and gas, mining and industrial service.
These are common examples and are not an exhaustive list. Enerpac RACH aluminum hollow plunger cylinders may also be used in other pulling, pushing, tensioning, testing, lifting and maintenance applications where the required capacity, stroke, portability and center-hole size are suitable.
RACH Series Features
- Hollow plunger design permits both pulling and pushing forces.
- Lightweight aluminum construction improves portability.
- Composite bearings improve cylinder life and side-load resistance.
- Hard-Coat finish on all surfaces helps resist damage and wear.
- Floating center tube helps improve seal and cylinder life.
- Handles are standard on all models.
- Steel base plate and saddle provide protection against load-induced damage.
- Integral stop ring prevents plunger over-travel and can withstand full cylinder capacity.
- High-strength return spring provides rapid cylinder retraction.
- CR400 coupler and dust cap are included on all models.
- All models meet ASME B30.1 requirements.
| Capacity Class | Maximum Capacity (tons) | Model | Stroke (in) | Effective Area (in²) | Oil Capacity (in³) | Collapsed Height (in) | Center Hole (in) |
|---|---|---|---|---|---|---|---|
| 20 ton | 25.4 | RACH202 | 1.97 | 5.07 | 9.98 | 7.41 | 1.06 |
| 20 ton | 25.4 | RACH204 | 3.94 | 5.07 | 19.96 | 9.89 | 1.06 |
| 20 ton | 25.4 | RACH206 | 5.91 | 5.07 | 29.94 | 12.41 | 1.06 |
| 20 ton | 25.4 | RACH208 | 7.87 | 5.07 | 39.87 | 14.89 | 1.06 |
| 20 ton | 25.4 | RACH2010 | 9.84 | 5.07 | 49.90 | 17.41 | 1.06 |
| 30 ton | 39.6 | RACH302 | 1.97 | 7.92 | 15.59 | 8.20 | 1.34 |
| 30 ton | 39.6 | RACH304 | 3.94 | 7.92 | 31.18 | 10.52 | 1.34 |
| 30 ton | 39.6 | RACH306 | 5.91 | 7.92 | 46.77 | 13.12 | 1.34 |
| 30 ton | 39.6 | RACH308 | 7.87 | 7.92 | 62.35 | 15.56 | 1.34 |
| 30 ton | 39.6 | RACH3010 | 9.84 | 7.92 | 77.94 | 18.04 | 1.34 |
| 60 ton | 65.6 | RACH602 | 1.97 | 13.13 | 25.84 | 9.89 | 2.13 |
| 60 ton | 65.6 | RACH604 | 3.94 | 13.13 | 51.69 | 12.41 | 2.13 |
| 60 ton | 65.6 | RACH606 | 5.91 | 13.13 | 77.53 | 14.97 | 2.13 |
| 60 ton | 65.6 | RACH608 | 7.87 | 13.13 | 103.37 | 17.52 | 2.13 |
| 60 ton | 65.6 | RACH6010 | 9.84 | 13.13 | 129.21 | 20.09 | 2.13 |
| 100 ton | 127.5 | RACH1002 | 1.97 | 25.51 | 50.21 | 10.16 | 3.11 |
| 100 ton | 127.5 | RACH1004 | 3.94 | 25.51 | 100.43 | 12.80 | 3.11 |
| 100 ton | 127.5 | RACH1006 | 5.91 | 25.51 | 150.64 | 15.40 | 3.11 |
| 100 ton | 127.5 | RACH1008 | 7.87 | 25.51 | 200.85 | 18.08 | 3.11 |
| 100 ton | 127.5 | RACH10010 | 9.84 | 25.51 | 251.07 | 20.76 | 3.11 |
| 150 ton | 175.0 | RACH1502 | 1.97 | 35.00 | 66.08 | 11.03 | 3.11 |
| 150 ton | 175.0 | RACH1504 | 3.94 | 35.00 | 132.17 | 14.18 | 3.11 |
| 150 ton | 175.0 | RACH1506 | 5.91 | 35.00 | 206.72 | 16.93 | 3.11 |
| 150 ton | 175.0 | RACH1508 | 7.87 | 35.00 | 275.62 | 19.69 | 3.11 |
| 150 ton | 175.0 | RACH15010 | 9.84 | 35.00 | 344.53 | 22.45 | 3.11 |
RARH
Enerpac RARH Aluminum Double-Acting Hollow Plunger Cylinders
30–150 Ton Classes • 1.97–9.84" Stroke • Powered Retract
RARH Series — Aluminum Double-Acting Hollow Plunger Cylinders
Enerpac RARH cylinders combine lightweight aluminum construction with double-acting hydraulic operation. They provide powered advance and retract for applications where faster controlled retraction and easier cylinder handling are both important. Capacity classes range from 30 to 150 tons.
Where RARH Double-Acting Aluminum Cylinders May Be Used
RARH cylinders may be used for field tensioning, pulling, pushing, testing, industrial maintenance, machinery service, equipment positioning and high-force applications where a lighter cylinder and rapid powered retraction improve handling and cycle time.
Applications for Enerpac RARH Cylinders
Lightweight double-acting hollow plunger cylinders can support construction, infrastructure, oil and gas, mining, heavy equipment, manufacturing and field-maintenance applications.
These are common examples and are not an exhaustive list. Enerpac RARH aluminum double-acting hollow plunger cylinders may also be used in other pulling, pushing, tensioning, testing, lifting and positioning applications where the required force, stroke, center-hole size, portability and hydraulic control requirements are suitable.
RARH Series Features
- Lighter and shorter collapsed height than equivalent RACH models.
- Double-acting operation provides rapid hydraulic retraction regardless of hose length or system losses.
- Built-in safety valve helps prevent accidental over-pressurization.
- Hollow plunger permits both pulling and pushing forces.
- Hard-Coat finish helps resist wear and damage.
- Handles and CR400 couplers with dust caps are included on all models.
- Floating center tube helps increase seal life.
- Steel base plate and saddle provide protection against load-induced damage.
- Integral stop ring prevents plunger over-travel and is capable of withstanding full cylinder capacity.
- All models meet ASME B30.1 requirements.
The base holes on these aluminum cylinders are intended to secure the steel base plate. They are not designed to withstand the full cylinder force and should not be used to attach other devices to the cylinder.
RARH cylinders require a hydraulic pump and valve arrangement suitable for double-acting operation, typically using a 4-way control valve.
| Capacity Class | Maximum Advance (tons) | Maximum Retract (tons) | Model | Stroke (in) | Area Advance (in²) | Area Retract (in²) | Oil Advance (in³) | Oil Retract (in³) | Collapsed Height (in) | Center Hole (in) |
|---|---|---|---|---|---|---|---|---|---|---|
| 30 ton | 40.30 | 21.00 | RARH302 | 1.97 | 7.94 | 4.14 | 15.63 | 8.14 | 8.22 | 1.34 |
| 30 ton | 40.30 | 21.00 | RARH306 | 5.91 | 7.94 | 4.14 | 46.89 | 24.43 | 12.16 | 1.34 |
| 30 ton | 40.30 | 21.00 | RARH3010 | 9.84 | 7.94 | 4.14 | 78.15 | 40.72 | 16.10 | 1.34 |
| 60 ton | 66.81 | 29.65 | RARH602 | 1.97 | 13.17 | 5.84 | 25.91 | 11.50 | 9.68 | 2.13 |
| 60 ton | 66.81 | 29.65 | RARH606 | 5.91 | 13.17 | 5.84 | 77.72 | 34.50 | 13.62 | 2.13 |
| 60 ton | 66.81 | 29.65 | RARH6010 | 9.84 | 13.17 | 5.84 | 129.54 | 57.49 | 17.56 | 2.13 |
| 100 ton | 112.40 | 63.80 | RARH1002 | 1.97 | 22.16 | 12.57 | 43.60 | 24.73 | 9.99 | 3.11 |
| 100 ton | 112.40 | 63.80 | RARH1006 | 5.91 | 22.16 | 12.57 | 130.79 | 74.19 | 13.92 | 3.11 |
| 100 ton | 112.40 | 63.80 | RARH10010 | 9.84 | 22.16 | 12.57 | 217.99 | 123.66 | 17.86 | 3.11 |
| 150 ton | 167.20 | 84.00 | RARH1502 | 1.97 | 32.96 | 16.56 | 64.86 | 32.58 | 10.39 | 3.11 |
| 150 ton | 167.20 | 84.00 | RARH1506 | 5.91 | 32.96 | 16.56 | 194.57 | 97.74 | 14.33 | 3.11 |
| 150 ton | 167.20 | 84.00 | RARH15010 | 9.84 | 32.96 | 16.56 | 324.28 | 162.89 | 18.27 | 3.11 |
Which Hollow Plunger Series Should You Compare?
Start with RCH for single-acting pulling, pushing, tensioning and maintenance.
Compare RRH double-acting cylinders where fast or controlled retract is important.
RACH combines hollow-plunger versatility with lightweight aluminum construction.
RARH provides aluminum construction with hydraulic advance and retract.
RRH extends into substantially larger capacity classes, including 240, 450 and 660 ton options.
Send Northland the load, required stroke, rod or cable size, return requirement and application details.
Match the Cylinder With the Right Hydraulic Components
Hollow plunger cylinders must be matched with a hydraulic power source and components capable of supplying the required pressure, oil volume and directional control. Northland can help review the full system.
Match usable reservoir capacity, flow rate, pressure and single- or double-acting operation.
Select suitable high-pressure hoses for the cylinder, pump and control configuration.
Confirm coupler type before connecting RCH, RRH, RACH or RARH cylinders to an existing system.
Monitor system pressure and reduce the risk of overloading the hydraulic cylinder.
Double-acting RRH and RARH cylinders require suitable directional control for advance and retract.
Threaded hollow saddles and other accessories may help adapt the cylinder to specific tensioning or maintenance work.
Hollow Plunger Cylinder Selection Matters
Determine the actual push or pull force required and select the specific cylinder using its maximum capacity rating.
Confirm the cylinder has enough travel for the required movement without relying on full stroke where it can be avoided.
Check the diameter of the rod, cable, strand or component that must pass through the hollow plunger.
Decide whether spring return is sufficient or whether the job requires powered, controlled hydraulic retraction.
Confirm the hydraulic pump has enough usable oil volume for the selected cylinder at the required stroke.
Ensure saddles, threaded rods, fixtures and support structures are appropriate for the forces being applied.
Tell Us the Force, Stroke & What Needs to Pass Through It.
Northland can help compare Enerpac RCH, RRH, RACH and RARH hollow plunger cylinders and match the selected model with the appropriate pump, hose, pressure gauge, couplers, valve and accessories for applications in Edmonton, Alberta and across Western Canada.
