Sourcing the HTC7T-108 108-inch inverse telescopic hydraulic cylinder for 7-ton dump trailers? Review OEM specs: 108" stroke, 45" closed length, SAE #8 port, 101 lbs.
Cylinder Series:
HTC Series (North American Dump Trailer Standard)Rated Tipping Load:
7.0 US Tons (14,000 lbs)Total Usable Stroke:
108.0 in (2,743.2 mm)Retracted Length:
45 in (1，143 mm)Main Tube OD:
3.75in (95.3mm)In the North American commercial dump trailer market, traditional upright telescopic cylinders suffer from a built-in environmental flaw: when mounted with the large barrel at the bottom, the nested sleeve gland collars act as open metal cups that trap road salt, gravel dust, and pooling rainwater. Over time, road grime washes directly into the internal chevron packings, causing premature seal weeping and scoring on the hard-chromed sleeves.
The HTC7T-108 108-Inch Inverse Telescopic Hydraulic Cylinder for 7-Ton Dump Trailers completely eliminates this contamination trap through its inverse (inverted) mounting geometry. By mounting the largest diameter body at the upper doghouse pivot and extending the smaller sleeves downward toward the trailer tongue, gravity naturally sheds rain, slush, and aggregate dust away from the gland wipers.
| Engineering Parameter | Specification |
|---|---|
| Part Number | HTC7T-108 |
| Cylinder Series | HTC Series (North American Dump Trailer Standard) |
| Rated Tipping Load | 7.0 US Tons (14,000 lbs) |
| Total Usable Stroke | 108.0 in (2,743.2 mm) |
| Retracted Length | 45.0 in (1,143.0 mm) |
| Main Tube OD | 3.75 in (95.3 mm) |
| Pin Bore Diameter | 1.063 in (27.0 mm / 1-1/16" Pin) |
| Hydraulic Port | SAE #8 O-Ring Boss (3/4-16 UNF) |
| Bare Weight | 101.0 lbs (45.8 kg) |
| Extension Fluid Volume | 2.2 Gal (8.3 L) |
When building 12-foot to 16-foot tandem-axle bumper-pull and gooseneck dump trailers, achieving a clean 48° to 52° dump angle is vital for sticky loads like wet manure, clay, or asphalt. With an extensive 108" stroke housed within a compact 45" closed envelope, the HTC7T-108 108-Inch Inverse Telescopic Hydraulic Cylinder for 7-Ton Dump Trailers mounts cleanly inside standard front bulkhead doghouses without consuming valuable cargo floor length.
Operating the HTC7T-108 requires 2.2 gallons of usable hydraulic oil on full extension. Trailer upfitters pairing this cylinder with a standard 12V DC single-acting hydraulic power unit (delivering 1.2 to 1.5 GPM at 2,500 psi) achieve full tipping elevation in approximately 35 to 45 seconds. Ensure your onboard hydraulic fluid reservoir holds a minimum of 4.0 to 6.0 gallons to prevent pump aeration when the multi-stage hoist is fully extended.
Every stage of the HTC7T-108 108-Inch Inverse Telescopic Hydraulic Cylinder for 7-Ton Dump Trailers undergoes deep-hole precision skiving and roller-burnishing to achieve an internal micro-finish (Ra ≤ 0.15 μm). The external stage surfaces receive heavy micro-crack-free hard chrome plating (> 25 μm) capable of withstanding 500+ hours of ASTM B117 neutral salt spray without surface pitting.
The internal seal stack features multi-stage polyurethane V-packings energized by bottom support rings, maintaining zero-drift holding pressure across ambient temperature extremes from -40°C to +80°C. Metal-cased scrapers on each nested sleeve prevent fine silica dust from penetrating the inner oil chambers.
Specifications cited above represent official HCIC 2026 Product Catalog parameters (Page 14, HTC-Model Hydraulic Cylinder, 7 TONS INVERSE). Always verify doghouse header clearances, pin center-to-center distances, and reservoir tank capacity prior to welding mounting brackets to trailer chassis frames.
Looking for direct container supply or replacement stock for the HTC7T-108 108-Inch Inverse Telescopic Hydraulic Cylinder for 7-Ton Dump Trailers?
Contact the HCIC commercial trailer engineering group with your annual build forecasts and mounting bracket requirements. We provide complete 3D STEP models within 24 hours, custom pin options, and rapid container shipments to trailer manufacturing plants across North America.
