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TC Telescopic Hydraulic Cylinder for Dump Trailers
The TC Series Telescopic Hydraulic Cylinder is high-performance engineered exclusively for Dump Trailers, Commercial Tippers, and Gooseneck Dumping Trailers. Featuring an inverted trunnion-mount base with a top rod-eye, this cylinder delivers maximum lifting thrust and high tipping angles while maintaining a ultra-compact collapsed profile under the trailer bed.
By mounting the trunnion pivot directly to the forward bed frame, the cylinder minimizes underbody space requirements, allows higher ground clearance, and eliminates the need for bulky scissor hoists. Precision-machined from high-tensile seamless steel tubing with hard-chrome plated stages, the WP Series handles heavy aggregate, sand, gravel, and construction debris under continuous high-pressure unloading cycles.
Key Features & Advantages
Optimized Dump Trailer Geometry: The inverted trunnion mounting location shifts the lifting point forward on the trailer box, providing superior leverage, reducing hydraulic system strain, and enabling tipping angles up to 45° – 50°.
Compact Collapsed Length: Multi-stage nesting allows maximum extension stroke while keeping the retracted length minimal, fitting effortlessly into tight dump trailer chassis frame underbodies.
Hard Chrome Plated Stages: Multi-stage nested sleeves are precision ground, micro-polished, and hard-chrome plated for maximum resistance to mud, grit, and harsh road salt corrosion.
High-Strength Seamless Tubing: Manufactured from high-tensile cold-drawn steel to withstand extreme side-loads during uneven trailer dumping on unpaved terrain.
Single-Acting Power-Up / Gravity-Down: Efficient hydraulic operation utilizing pump pressure for smooth lifting and payload body weight for controlled lower-down cycles.
Multi-Lip Seal Package: Premium polyurethane rod seals and heavy-duty wipers prevent fluid leakage while locking out dirt, dust, and gravel contamination during high-angle dumps.
Technical Specifications
Parameter | Standard Specification |
|---|---|
Primary Application | Commercial Dump Trailers, Utility Tippers & Gooseneck Trailers |
Cylinder Type | Single-Acting Multi-Stage Telescopic Hydraulic Cylinder |
Max Working Pressure | 2,500 – 3,000 PSI (17.2 – 20.6 MPa) |
Test Pressure | 3,750 PSI (25.8 MPa) |
Operating Temperature | -30°C to +100°C (-22°F to +212°F) |
Mounting Style (Base) | Heavy-Duty Side Trunnion Pins (Mid-Body Mount) |
Mounting Style (Rod) | Top Rod Eye Pin Connection |
Stage Count | 3-Stage / 4-Stage Options |
Stroke Range | 78″ – 144″ (1,980 mm – 3,650 mm) |
Port Style | SAE#8 ORB (7/8″-14 UNF) / Heavy-Duty Hose Ports |
Surface Finish | High-Gloss Black Polyurethane Coating (200 Hours Salt-Spray Tested) |
TC Telescopic Hydraulic Cylinder Drawing
TC Telescopic Hydraulic Cylinder Dimensional Data
| LIFTING CAPACITY | PART NUMBER | STROKE | A | B | C | D | E | F | G | H | L | PORT | WEIGHT [Lbs] | VOLUME [Gal.] |
| 7 TONS INVERSE | TC07078 | 78″ | 35.5″ | 3.75″ | 2″ | 1.063″ | 3.0″ | 1.25″ | 6.5″ | 1.25″ | 7″ | SAE #8 (3/4-16UNF) | 68 | 1.6 |
| 7 TONS INVERSE | TC07090 | 90″ | 39.5″ | 3.75″ | 2″ | 1.063″ | 3.0″ | 1.25″ | 6.5″ | 1.25″ | 7″ | SAE #8 (3/4-16UNF) | 75 | 1.8 |
| 7 TONS INVERSE | TC07108 | 108″ | 45″ | 3.75″ | 2″ | 1.063″ | 3.0″ | 1.25″ | 6.5″ | 1.25″ | 7″ | SAE #8 (3/4-16UNF) | 101 | 2.2 |
| 12 TONS INVERSE | TC12078 | 78″ | 34.75″ | 4.4″ | 2″ | 1.063″ | 3.0″ | 1.5″ | 7.5″ | 1.5″ | 7″ | SAE #8 (3/4-16UNF) | 106 | 2.5 |
| 12 TONS INVERSE | TC12090 | 90″ | 38.7″ | 4.4″ | 2″ | 1.063″ | 3.0″ | 1.5″ | 7.5″ | 1.5″ | 7″ | SAE #8 (3/4-16UNF) | 107 | 2.8 |
| 12 TONS INVERSE | TC12108 | 108″ | 44.75″ | 4.4″ | 2″ | 1.063″ | 3.0″ | 1.5″ | 7.5″ | 1.5″ | 7″ | SAE #8 (3/4-16UNF) | 132 | 3.4 |
| 12 TONS INVERSE | TC12120 | 120″ | 48.75″ | 4.4″ | 2″ | 1.063″ | 3.0″ | 1.5″ | 7.5″ | 1.5″ | 7″ | SAE #8 (3/4-16UNF) | 143 | 3.8 |
| 12 TONS INVERSE | TC12144 | 144″ | 56.78″ | 4.4″ | 2″ | 1.063″ | 2.25″ | 1.5″ | 7.5″ | 1.5″ | 7″ | SAE #8 (3/4-16UNF) | 166 | 4.6 |
TC Telescopic Hydraulic Cylinder Applications
Tandem Axle Dump Trailers: Sand, gravel, dirt, and heavy material tipping bodies.
Gooseneck Dump Trailers: Commercial-grade high-capacity dumping equipment requiring long stroke extension.
Utility & Agricultural Tippers: Grain, seed, feed, and farm waste trailers.
Landscape & Construction Trailers: Equipment, rocks, mulch, and demolition debris hauling trailers.
Customization & OEM Capabilities
We work closely with dump trailer manufacturers and fleet builders to supply direct-fit hydraulic cylinders tailored to your chassis setup:
Custom Pin & Trunnion Sizes: Customized pin hole diameters and trunnion pin widths to fit standard trailer mounting brackets.
Tailored Stage Configurations: Custom 3-stage or 4-stage options tailored to specific bed lengths ($10\text{ft}$ up to $24\text{ft}$).
Integrated Safety Valves: Velocity fuses or flow limiters can be integrated to prevent rapid bed drops in the event of hose failure.
Custom Paint & Private Labeling: Factory custom color matching, laser logo marking, and private-label box packaging for trailer OEM brands.
Quality Assurance & Factory Testing
Every WP Telescopic Dump Trailer Cylinder is manufactured under ISO 9001 quality controls and subjected to strict testing before dispatch:
100% Full-Stroke Pressure Testing: Factory pressure tested up to $1.5\times$ working pressure ($3,750\text{ PSI}$) through complete extension and retraction cycles.
Zero Bypass Holding Test: Static pressure hold checks to verify zero stage-to-stage fluid bypass under rated payload tonnage.
Concentricity & Alignment Checks: Multi-stage concentricity alignment to eliminate binding during uneven loading conditions.