I. Core Technical Features
1. * * Space efficiency**
-The length of the retracted state is close to that of a single-stage oil cylinder, and the stroke after extension can reach more than twice the retracted length (such as the RT1510 model with a retracted height of 283mm and an extended height of 553mm).
2. * * Thrust Speed Adaptive**
-Due to the difference in effective area at all levels, the thrust decreases gradually with extension (such as 36 tons for the first level and 14 tons for the second level), and the speed increases gradually to meet the working requirements of loading and unloading machinery.
3. * * Customizable design**
-Support on-demand adjustment of levels (2-4 common), stroke, oil port position, and installation form (such as U-shaped clamp, ear shaft).
4. * * High reliability process**
-Using high-strength DOM steel pipes, combined with the "drum polishing" process to enhance the surface hardness and sealing durability of the cylinder barrel; Some products are equipped with dual sealing systems to reduce the risk of leakage.
2、 Main types
|* * Classification criteria * * | * * Types and characteristics * *|
|----------------------------------|-------------------------------------------------------------------------------|
|* * Mode of action * * | * * Single action * *: Hydraulic extension, gravity/external force retraction (such as a dump truck).
**Double acting * *: Hydraulic control for extension and contraction, with a more complex structure (such as cranes). |
|Grade and stroke * * | Grade 2 (stroke ≤ 300mm), Grade 3 (stroke 435-500mm), Grade 4 (stroke up to 600mm), with a maximum working pressure of 5000PSI. |
3、 Typical application areas
-* * Construction Machinery * *: Crane arm extension and retraction, dump truck bucket lifting (such as RT series suitable for 14-31.5 ton loads).
-* * Environmental sanitation equipment * *: garbage compression vehicle push plate drive, requiring lateral load resistance design.
-Agriculture and Transportation: Trailer tipping system, harvester lifting mechanism, emphasizing corrosion resistance (porcelain paint surface treatment).
-* * Special scenario * *: Metallurgical equipment modification, drilling rig mast lifting, relying on long stroke and high pressure performance.
4、 Typical product parameters (taking RT1510 as an example)
|* * Parameter Item * * | * * Value * * | * * Explanation * *|
|------------------------------|-------------------|--------------------------|
|Rated load | 14 tons | Maximum working pressure 700 bar|
|Travel | 270mm | Divided into two levels (135mm each)|
|Retraction/extension length | 283mm/553mm | Compact ratio ≈ 1:2|
|Oil Capacity | 944 cm ³ | Affects System Flow Design|
|Surface treatment | Enamel coating | Enhanced corrosion resistance|
** Safety Tip * *: The manufacturer recommends that the actual load be ≤ 80% of the rated value to comply with ASME B30.1 safety standards.
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