Telescopic Dump Truck Hydraulic Cylinders (HTC Series)
A telescopic dump cylinder extends in stages from a vertical or near-vertical mount under a tipper body, reaching a long stroke from a short closed length. HCIC's HTC series are single-acting, three-stage cylinders rated at 20.7 MPa (3000 PSI), with total strokes from 1981.2 mm (78 in) to 3657.6 mm (144 in) in two classes: the 7-ton class (suffix 33, 95.2 mm / 3.75 in barrel) and the 12-ton class (suffix 43, 111.8 mm / 4.40 in barrel).
Choosing between the 7 t and 12 t classes
Choose by the payload of the tipping body, not by stroke. The 7-ton class (part numbers ending in 33, e.g. HTC-10833-ORB) suits light and medium tippers; the 12-ton class (ending in 43, e.g. HTC-12043-ORB) carries a 111.8 mm (4.40 in) barrel and suits heavier bodies. Within each class, pick the stroke from your body geometry: 1981.2 mm (78 in), 2286 mm (90 in), 2743.2 mm (108 in) in the 7-ton class; 1981.2–3657.6 mm (78–144 in) in the 12-ton class. Both classes share the final-stage diameter of 50.8 mm (2 in) and accept an SAE #8 (3/4-16 UNF) port.
7-ton class — suffix 33
| Model | Tipping class | Stroke | Bore (barrel OD) * | Rod (final stage) * | Port | Weight |
|---|---|---|---|---|---|---|
| HTC-07833-ORB | 7 t | 1981.2 mm78 in | 95.2 mm3.75 in | 50.8 mm2 in | SAE #8 (3/4-16 UNF) | 30.8 kg68 lb |
| HTC-09033-ORB | 7 t | 2286 mm90 in | 95.2 mm3.75 in | 50.8 mm2 in | — | 34.0 kg75 lb |
| HTC-10833-ORB | 7 t | 2743.2 mm108 in | 95.2 mm3.75 in | 50.8 mm2 in | — | 45.8 kg101 lb |
* For the HTC series, "bore" and "rod" are quoted as the barrel outside diameter (B) and the final-stage diameter (C), per the catalog drawing — see catalog note 1 below.
Other sizes available on request — send us your drawing. Get a Quote in 48 Hours ›
12-ton class — suffix 43
| Model | Tipping class | Stroke | Bore (barrel OD) * | Rod (final stage) * | Port | Weight |
|---|---|---|---|---|---|---|
| HTC-07843-ORB | 12 t | 1981.2 mm78 in | 111.8 mm4.40 in | 50.8 mm2 in | SAE #8 (3/4-16 UNF) | 48.1 kg106 lb |
| HTC-09043-ORB | 12 t | 2286 mm90 in | 111.8 mm4.40 in | 50.8 mm2 in | — | 48.5 kg107 lb |
| HTC-10843-ORB | 12 t | 2743.2 mm108 in | 111.8 mm4.40 in | 50.8 mm2 in | — | 59.9 kg132 lb |
| HTC-12043-ORB | 12 t | 3048 mm120 in | 111.8 mm4.40 in | 50.8 mm2 in | — | 64.9 kg143 lb |
| HTC-14443-ORB | 12 t | 3657.6 mm144 in | 111.8 mm4.40 in | 50.8 mm2 in | — | 75.3 kg166 lb |
* For the HTC series, "bore" and "rod" are quoted as the barrel outside diameter (B) and the final-stage diameter (C), per the catalog drawing — see catalog note 1 below.
Other sizes available on request — send us your drawing. Get a Quote in 48 Hours ›
Matching clevis mounts and brackets
Matching clevis mounts and brackets — list them in your inquiry so the mounting arrives matched.
Catalog notes
- For the HTC series, "bore" and "rod" are quoted as the barrel outside diameter (B) and the final-stage diameter (C), per the catalog drawing. ↩
Frequently asked questions
What is the difference between HTC-10833 and HTC-12043 dump cylinders?
The two-digit suffix marks the class: 33 is the 7-ton class with a 95.2 mm (3.75 in) barrel, and 43 is the 12-ton class with a 111.8 mm (4.40 in) barrel. Both are three-stage, single-acting cylinders rated at 20.7 MPa (3000 PSI).
How long a stroke can an HTC telescopic dump cylinder reach?
Strokes run from 1981.2 mm (78 in) to 3657.6 mm (144 in). The longest model, HTC-14443-ORB, extends 3657.6 mm (144 in) and weighs 75.3 kg (166 lb).
Are the dump cylinders single-acting or double-acting?
All HTC models are single-acting: the body's weight retracts the cylinder. This is the standard arrangement for rear-tip and three-way tipping bodies.
Request a quote
Send us the bore, stroke and mounting dimensions — our engineering team replies within 48 hours.