Four-Stage Single-Acting Telescopic Hydraulic Cylinder for Dump Trucks
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SKU: 550788112X
Model: S Series Single-Acting Telescopic Cylinders
S42 Series
S43 Series
S52 Series
S53 Series
S62 Series
S63 Series
S64 Series
S73 Series
S74 Series
S84 Series
S85 Series
S95 Series
Four-Stage Single-Acting Telescopic Hydraulic Cylinder for Dump Trucks
This S74 series telescopic cylinder is a four-stage, single-acting hydraulic cylinder designed for dump truck applications. It offers a longer stroke than three-stage models, making it suitable for medium to large dump bodies. Rated at 2000 PSI (140 bar), it features high-strength carbon steel construction for reliable performance in demanding mobile applications.
Key Selling Points
Four-Stage Design: Provides longer stroke capability compared to three-stage cylinders.
Single-Acting with Gravity Return: Simplifies the hydraulic system.
Rated 2000 PSI (140 bar): Handles heavy loads with reliable lifting force.
High-Strength Carbon Steel: Body, sleeves, and plunger are built for durability.
Polyurethane Wipers: Prevent dirt and contaminants from entering the cylinder.
Technical Specifications
Acting Type
Single Acting
Retraction Method
Gravity Return or External Load Return
Cylinder Type
Multi-Stage Telescopic Cylinder
Number of Moving Stages
4
General Sleeve Diameter Range
1.75–14.00 in
Stroke Range
36–500 in (Stocking models: 72–265 in)
Nominal Working Pressure
2000 PSI / 140 Bar
Standard Operating Temperature
−40°F to +200°F / −40°C to +93°C
Standard Mounting
Pin-Mounted Base and Plunger End
Available Mounting Codes
CC, DB, DC, MB
Port Options
NPT or SAE O-Ring Boss
Typical Port Sizes
1/2 in, 3/4 in, 1 in NPT; #8, #12, #16 SAE
Extension Sequence
Largest Moving Stage Extends First
Retraction Sequence
Smallest Moving Stage Retracts First
Surface Finish
Corrosion-Resistant Industrial Coating
Models and Options
This S74 four-stage model is part of the S74 Series. Available mounting codes: CC, DB, DC, MB. Port options: NPT or SAE O-Ring Boss. Custom stroke, port position, and mounting configurations available.
Materials and Structure
Cylinder Body: High-Strength Carbon Steel
Telescopic Sleeves: High-Strength Carbon Steel
Plunger: High-Strength Carbon Steel
Stop Rings: Threaded Steel
Sleeve V-Packing: Hytrel and Rubber
Sleeve Wiper: Polyurethane
Sleeve Bearings: Glass-Reinforced Nylon
Packing Nut Lock: Steel Set Screw with Nylon Ball
Wave Spring: Spring Steel
Mounting Components: High-Strength Cast or Fabricated Steel
Pins: Hardened Steel
Applications
Suitable for standard dump trucks, tandem-axle dump trucks, transfer dump trucks, semi-trailer end dumps, and heavy construction material transportation.
Customization
Replacement manufacturing based on model number, 10-digit part number, drawing, or sample. Custom mounting orientations, port positions, and stroke lengths available.
Application: Front-end telescopic cylinders for dump trucks in construction, mining, and aggregate transportation.
Duration: 2 years
Result: Delivered reliable lifting performance, high operational efficiency, and excellent durability under continuous heavy-load working conditions.
Highlight: High-strength multi-stage telescopic design with optimized sealing system, superior side-load resistance, and excellent fatigue life.
FAQ
What is the standard working pressure? 2000 PSI (140 bar). Higher pressure applications are subject to engineering evaluation.
What stroke lengths are available? Stocking models range from 72 to 265 inches; custom stroke lengths can be engineered.
What mounting options are available? Standard pin-mounted base and plunger end; mounting codes CC, DB, DC, MB.
What port options are available? NPT or SAE O-Ring Boss, depending on model. Typical sizes include 1/2 in, 3/4 in, 1 in NPT and #8, #12, #16 SAE.
What is the operating temperature range? –40°F to +200°F (–40°C to +93°C).
How is quality ensured? Each cylinder undergoes dimensional inspection, stage sequence testing, pressure testing, and leakage testing.
Can you manufacture replacements based on samples? Yes, replacement manufacturing is available based on model number, 10-digit part number, drawing, or sample.
What is the minimum order quantity? Standard products: 1 piece. Custom OEM/ODM projects: negotiable.
Inquiry Information
For a quote, please provide the following details:
Original Cylinder Model Number
Original 10-Digit Part Number
Number of Stages
Stroke Length
Closed Length
Base and Rod-End Pin Diameters
Mounting Widths
Hydraulic Port Size and Position
Dump Body Length
Body Hinge-to-Cylinder Base Distance
Rated Payload
Required Dump Angle
System Working Pressure
Installation Photographs or Drawing
Contact us at jason@hydraulicapex.com or WhatsApp +86 182-5318-1828.
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