RSM Series, Single Acting Low Profile Hydraulic Cylinder

Product Details

RSM Series Single Acting Low Profile Hydraulic Cylinders

The LONGLOOD RSM Series Single Acting Low Profile Hydraulic Cylinders are specifically designed for heavy lifting applications where vertical clearance is extremely limited. With their ultra-compact flat design, spring return operation, and 700 bar (10,000 PSI) maximum working pressure, these cylinders deliver exceptional lifting force in the smallest possible installation height.

Ideal for machinery maintenance, bridge construction, equipment alignment, mining, shipbuilding, and industrial lifting, the RSM Series combines strength, reliability, and portability for demanding applications.

RSM Series Features

Ultra-Low Profile Flat Design

The compact flat body allows the cylinder to fit into extremely confined spaces where conventional hydraulic cylinders cannot be installed.

Powerful Lifting Capacity

Despite their small size, RSM cylinders deliver lifting capacities from 5 to 150 tons, making them suitable for a wide range of industrial applications.

Single-Acting Spring Return

Hydraulic pressure extends the piston while the internal heavy-duty spring automatically retracts it after pressure is released, ensuring fast and efficient operation.

Hard Chrome-Plated Steel Plunger

Precision-machined steel plungers with hard chrome plating provide superior wear resistance, corrosion protection, and smooth operation.

Grooved Plunger End

The grooved plunger end offers secure load contact and eliminates the need for separate saddles in most applications, reducing setup time and improving stability.

Durable Corrosion Protection

A baked enamel finish protects the cylinder body from corrosion, scratches, and harsh working environments, extending service life.

Convenient Mounting Holes

Integrated mounting holes allow the cylinder to be securely fixed to machinery or lifting fixtures for safer and more stable operation.

Integrated Carrying Handles

The RSM-750, RSM-1000, and RSM-1500 models include built-in carrying handles for easier transportation and positioning on job sites.

700 Bar Maximum Working Pressure

Designed to operate safely at 700 bar (10,000 PSI) for maximum lifting performance and long-term reliability.

Applications

The RSM Series is ideal for:

  • Heavy equipment maintenance
  • Industrial machinery installation
  • Bridge lifting and repair
  • Steel structure alignment
  • Mining equipment maintenance
  • Shipbuilding and offshore engineering
  • Construction projects
  • Power plant maintenance
  • Wind energy installation
  • Manufacturing plants
  • Railway maintenance
  • Equipment leveling and positioning

Technical Specifications

Specification Details
Product Series RSM
Cylinder Type Single Acting Low Profile Hydraulic Cylinder
Return Type Spring Return
Capacity 5–150 Ton
Stroke 6–16 mm
Maximum Operating Pressure 700 bar (10,000 PSI)
Construction High-Strength Alloy Steel
Plunger Finish Hard Chrome Plated
Surface Finish Baked Enamel
Mounting Base Mounting Holes

Available Models

Model Capacity (Ton) Effective Area (cm²) Oil Capacity (cm³) Collapsed Height (mm) Extended Height (mm) Weight (kg)
RSM-50 5 6.5 4 32 38 1.0
RSM-100 10 14.5 18 42 54 1.4
RSM-200 20 28.7 32 51 62 3.1
RSM-300 30 42.1 55 58 71 4.5
RSM-500 50 62.1 99 66 82 6.8
RSM-750 75 102.6 164 79 95 11.3
RSM-1000 100 126.7 203 85 101 14.5
RSM-1500 150 198.1 317 100 116 26.3

Why Choose the RSM Series?

Extremely Compact Design

Perfect for lifting operations where space is too limited for standard hydraulic cylinders.

High Lifting Force

Capacities from 5 to 150 tons provide dependable performance for a wide range of heavy-duty applications.

Easy Installation

Built-in mounting holes simplify fixture installation, while integrated handles on larger models improve portability.

Long Service Life

Premium alloy steel construction, hard chrome-plated plungers, and durable seals ensure reliable performance under demanding conditions.

Reduced Maintenance

The spring return mechanism and grooved plunger design reduce setup time and minimize maintenance requirements.

Universal Compatibility

Compatible with most 700 bar hydraulic hand pumps, electric pumps, air hydraulic pumps, and hydraulic power units.

Safety Guidelines

For safe operation and maximum service life:

  • Always place the cylinder on a solid, level surface.
  • Keep the load centered on the plunger.
  • Avoid side loading whenever possible.
  • Do not exceed the rated lifting capacity or 700 bar operating pressure.
  • Ensure hydraulic hoses and couplers are securely connected before use.
  • Inspect seals and hydraulic components regularly.
  • Clean the plunger before storage to prevent contamination and corrosion.

Frequently Asked Questions (FAQs)

1. What is a low profile hydraulic cylinder?

A low profile hydraulic cylinder is a compact lifting cylinder designed to fit into areas with very limited vertical clearance while still delivering high lifting force.

2. What is the difference between a low profile cylinder and a standard hydraulic cylinder?

Low profile cylinders have a much shorter collapsed height, making them ideal for confined spaces where standard cylinders cannot be installed.

3. How does the spring return system work?

Hydraulic pressure extends the piston, and an internal spring automatically retracts it when hydraulic pressure is released, improving efficiency and simplifying operation.

4. Why does the RSM Series use a grooved plunger?

The grooved plunger end provides secure load contact and often eliminates the need for an additional saddle, reducing setup time and improving stability.

5. Which hydraulic pump is compatible with the RSM Series?

The RSM Series is designed for use with any hydraulic pump rated at 700 bar (10,000 PSI), including manual, electric, pneumatic, and gasoline-powered pumps.

6. Can these cylinders be permanently mounted?

Yes. Integrated mounting holes allow secure installation on machinery, fixtures, and lifting systems where required.

7. Which models include carrying handles?

The RSM-750, RSM-1000, and RSM-1500 models are equipped with integrated carrying handles for easier transportation and positioning.

8. What industries commonly use RSM hydraulic cylinders?

The RSM Series is widely used in construction, mining, manufacturing, heavy equipment maintenance, bridge repair, shipbuilding, railway maintenance, power generation, and industrial plant maintenance.

9. How should the cylinder be maintained?

Regular maintenance includes inspecting hydraulic seals, keeping the plunger clean, checking hydraulic connections for leaks, lubricating moving parts as recommended, and storing the cylinder in a dry, clean environment.

10. Why choose LONGLOOD RSM Series Low Profile Hydraulic Cylinders?

LONGLOOD RSM Series cylinders are engineered for professionals who require maximum lifting power in minimum installation height. With premium alloy steel construction, hard chrome-plated plungers, durable corrosion protection, and compatibility with standard 700 bar hydraulic systems, they deliver reliable, safe, and efficient performance for the most demanding industrial lifting applications.

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