RRH Series Double Acting Hollow Plunger Hydraulic Cylinders

The LONGLOOD RRH Series Double Acting Hollow Plunger Hydraulic Cylinders are specially designed for applications requiring both push and pull hydraulic force. Featuring a hollow plunger design, these cylinders provide excellent versatility for tensioning, kor u qaadid, jiidid, and pressing operations.

With capacities ranging from 30 si 145 tan, stroke options from 38 si 258 mm, and a maximum operating pressure of 700 baar, the RRH Series delivers powerful and reliable hydraulic performance for industrial maintenance, construction, and heavy-duty applications.

The double-acting hydraulic system enables fast and controlled retraction, while the durable nickel-plated floating center tube and corrosion-resistant finish ensure long service life in demanding environments.

---

RRH Series Hollow Plunger Cylinder Features

Hollow Plunger Design for Push and Pull Applications

The hollow plunger allows hydraulic force to be applied in both pushing and pulling operations.

Faa'iidooyinka:

• Supports tensioning and lifting applications
• Suitable for through-hole applications
• Provides greater application flexibility
• Ideal for pulling rods, cables, and shafts

---

Double Acting Hydraulic Operation

The double-acting design provides hydraulic control during both extension and retraction.

Faa'iidooyinka:

• Fast piston return
• Improved operation efficiency
• Precise movement control
• Reduced downtime between cycles

---

High Capacity Performance

The RRH Series provides reliable hydraulic force for demanding applications.

Tilmaamaha:

• Capacity Range: 30–145 ton
• Stroke Range: 38–258 mm
• Cadaadiska Shaqada ee ugu badan: 700 baar

---

Built-In Relief Valves

Integrated relief valves help protect the cylinder from accidental over-pressurization.

Faa'iidooyinka:

• Protects internal components
• Improves operational safety
• Extends cylinder service life

---

Corrosion Resistant Construction

The baked enamel finish provides enhanced protection against corrosion and harsh working conditions.

Faa'iidooyinka:

• Improved durability
• Longer service life
• Suitable for industrial environments

---

Easy Installation with Collar Threads

The collar thread design allows straightforward installation and integration into different fixtures.

Note: Collar threads are not applicable for:

• RRH-1001
• RRH-1508

---

Durable Nickel-Plated Floating Center Tube

The nickel-plated floating center tube improves durability and reduces wear during operation.

Faa'iidooyinka:

• Increased product lifespan
• Better resistance to corrosion
• Improved reliability under repeated use

---

Plunger Wiper Protection

The integrated plunger wiper reduces contamination entering the cylinder.

Faa'iidooyinka:

• Protects internal components
• Reduces maintenance requirements
• Extends cylinder service life

---

Complete Accessories Included

All RRH Series cylinders include:

• CR-400 hydraulic coupler
• Dust cap

Providing convenient connection and protection during storage and transportation.

---

Tilmaamaha Farsamada

Tilmaamid	Details
Product Type	Double Acting Hollow Plunger Hydraulic Cylinder
Capacity Range	30–145 Ton
Stroke Range	38–258 mm
Cadaadiska Shaqada ee ugu badan	700 baar
Operation Type	Double Acting
Plunger Design	Hollow Plunger
Coupler Type	CR-400
Surface Protection	Baked Enamel Finish

---

RRH Series Applications

LONGLOOD Hollow Plunger Cylinders are widely used in:

Tensioning Applications

• Cable tensioning
• Rod tensioning
• Bolt tensioning
• Structural adjustment

Industrial Maintenance

• Equipment alignment
• Component removal
• Heavy machinery repair

Construction Projects

• Structural lifting
• Bridge maintenance
• Installation positioning

Manufacturing Applications

• Pressing operations
• Assembly work
• Fixture positioning

Heavy Equipment Service

• Machinery repair
• Shaft extraction
• Component adjustment

---

Product Advantages

Push and Pull Capability

The hollow plunger design allows both compression and tension operations, making one cylinder suitable for multiple applications.

Fast Hydraulic Retraction

The double-acting system provides quick return movement, improving productivity.

Reliable Industrial Performance

High-quality materials and protective finishes ensure long-lasting performance in demanding environments.

Flexible Installation

Collar threads and compact design simplify mounting and integration.

Enhanced Safety

Relief valves and durable construction provide safer operation under high-pressure conditions.

Safety Guidelines

For safe operation:

• Confirm cylinder capacity matches the required load.
• Inspect couplers, tuubooyinka, and fittings before operation.
• Never exceed the maximum pressure rating of 700 baar.
• Ensure the hollow plunger is properly aligned before applying force.
• Avoid side loading unless specifically designed for the application.
• Keep the working area clear during operation.
• Use appropriate personal protective equipment.

Frequently Asked Questions (FAQs)

1. What is a hollow plunger hydraulic cylinder?

A hollow plunger hydraulic cylinder is designed with a center opening through the piston, allowing it to perform both pushing and pulling operations using rods, cables, or other components.

2. What are the advantages of a double acting hollow cylinder?

A double acting hollow cylinder provides hydraulic control for both extension and retraction, allowing faster operation and better positioning control.

3. What capacity range does the RRH Series offer?

The LONGLOOD RRH Series provides:

• Awood: 30–145 tons
• Faalig: 38–258 mm

4. What applications require hollow plunger cylinders?

They are commonly used for:

• Cable tensioning
• Bolt tensioning
• Pulling operations
• Shaft removal
• Structural adjustment
• Heavy equipment maintenance

---

5. What is the maximum operating pressure?

The RRH Series operates at:

700 baar (10,000 psi) maximum pressure.

---

6. Why is a hollow plunger design useful?

The hollow plunger allows components such as rods and cables to pass through the cylinder, enabling applications that standard solid cylinders cannot perform.

---

7. What accessories are included with the cylinder?

Each RRH Series cylinder includes:

• CR-400 coupler
• Dust cap

---

8. What is the purpose of the relief valve?

The relief valve protects the cylinder from damage caused by excessive hydraulic pressure.

---

9. Are RRH Series cylinders suitable for industrial use?

Yes. They are designed for professional applications including construction, dayactirid, wax soo saar, and heavy equipment servicing.

---

10. Can LONGLOOD customize hollow plunger cylinders?

Yes. LONGLOOD provides OEM and ODM services including customized capacities, strokes, mounting options, hydraulic connections, coatings, and branding solutions.

---

Why Choose LONGLOOD RRH Series Hollow Plunger Hydraulic Cylinders?

The LONGLOOD RRH Series Double Acting Hollow Plunger Hydraulic Cylinders combine powerful push-pull capability, fast hydraulic retraction, durable construction, and reliable safety features. They provide a versatile hydraulic solution for demanding tensioning, kor u qaadid, jiidid, and industrial maintenance applications.

Codsiga Sylinder Plunger: