Application Specific Telescopic Cylinder Solutions

Telescopic hydraulic cylinders, with their multi-stage nested design, provide an extended working stroke while maintaining a compact retracted form. At Goa Hydraulics, we engineer telescopic cylinders customized to meet the specific demands of your applications and environments.

Our expert engineering team collaborates with you to address key design considerations, ensuring the cylinder aligns with your unique requirements. We offer a variety of telescopic cylinder configurations, including:

• Single-acting telescopic cylinders
• Double-acting telescopic cylinders
• Hybrid models combining single- and double-acting features

Designed for Your Equipment and Application

Our tailored designs deliver optimal performance for your custom telescopic cylinder, addressing your equipment’s specific needs. With extensive experience across diverse markets and hydraulic applications, we create solutions that handle your toughest challenges. Common applications for our telescopic cylinders include:

• Garbage trucks
• Dump trucks
• Agricultural machinery
• Construction equipment
• Transfer trailers

Features and Specifications of Custom Telescopic Hydraulic Cylinders

• Single and Double Acting Telescopic Hydraulic Cylinders

• Stroke Lengths: Common lengths extend up to 500″.

• Operating Pressures: Standard designs support pressures up to 2,000 psi, with options for special applications reaching up to 3,000 psi.

• Number of Stages: Typically available with up to 5 stages.

• Maximum Bore Size: Available up to 15″.

• Minimum Stage Size: As small as 3/4″.

Single-Acting Telescopic Cylinders

Single-acting telescopic hydraulic cylinders rely on hydraulic pressure to extend and use gravity or external mechanical force to retract to their original position. These cylinders are low-maintenance and suitable for a wide range of machinery.

• Operation: Hydraulic flow and pressure extend the cylinder, while gravity or an external force retracts it.
• Key Features:
  • Capable of holding position
  • Provides a long stroke with a compact retracted length
  • Features a larger outer diameter compared to rod cylinders
  • Simpler and less complex design than double-acting cylinders

Double-Acting Telescopic Cylinders

Double-acting telescopic hydraulic cylinders use hydraulic power for both extension and retraction, making them ideal for heavy-duty applications. Unlike single-acting cylinders, they do not rely on gravity or external forces for retraction.

• Operation:

  • Hydraulic power drives both extension and retraction.
  • Retract force is used to pull the load.

• Conventional Double-Acting Telescopic Cylinders:

  • Both hydraulic ports are located on the rod end.
  • Piston seals are typically made from cast iron rings.
  • Not designed to hold loads at precise positions, allowing for potential drifting.
  • Requires a minimum flow rate to avoid stalling.

• Custom Double-Acting Telescopic Cylinder Features:

  • Ports located on the barrel to prevent moving hoses and minimize wear.
  • Positive piston seals ensure load-holding capability and eliminate the need for a minimum flow rate.
  • Reduced dead length per stage compared to conventional designs.

Partially Double-Acting Telescopic Cylinders

Partially double-acting telescopic cylinders are commonly used in over-center applications. These cylinders generate retract force for part of the stroke, with gravity completing the retraction cycle.

• Design Options:
  • The plunger rod can function as double-acting, while the sleeves operate as single-acting.
  • Alternatively, the largest sleeve may be double-acting, with the remaining sleeves and plunger rod functioning as single-acting.
  • A "skip-a-sleeve" design option allows for skipping a sleeve or stage, increasing the effective area and enhancing retract force.

Enhance Your Cylinder with Special Features

• Barrel-Based Ports: Positioning both ports on the barrel reduces moving hoses and wear patterns.
• Positive Piston Seals: These seals ensure load-holding capability and eliminate the need for minimum flow rates.
• Optimized Dead Lengths: Features reduced dead lengths per stage compared to conventional double-acting telescopic cylinders.