This anti-torque cylinder series is a critical load-bearing component of the shield machine cutterhead drive system. Arranged circumferentially around the main bearing, it resists the massive instantaneous reaction torque generated during rock cutting, mixed-face excavation, and boulder impact, and transmits it steadily to the shield body. With an ultra-large bore, ultra-short stroke, and ultra-high pressure heavy-duty construction, combined with special high-pressure sealing and an integrated safety valve package, it ensures rigid, zero-displacement locking of the drive system under continuous alternating torque, severe vibration, and underground slurry conditions, safeguarding precise shield steering and equipment integrity.

This crusher cylinder is the core actuator in the crushing chamber of shield tunnel boring machines. It hydraulically opens and closes the crusher jaws (or toggle plate) to clamp and crush oversized cobbles, boulders, and rock fragments entrained in the excavated muck, reducing their size to prevent blockage of the slurry or discharge piping. Designed with a heavy-duty rigid structure, task-specific sealing, and comprehensive anti-corrosion treatment, it consistently delivers stable, leak‑free clamping force in the typical shield environment — high-pressure slurry, intense vibration, heavy abrasion, and confined space.

This luffing cylinder is the core actuator for the mast raising/lowering system on rotary drilling rigs. It smoothly tilts the mast from a horizontal transport position to a vertical working position, and allows fine adjustment of the distance between the mast and the base machine for precise site positioning. Designed with a high-rigidity heavy-wall structure, a unique double waterproof sealing system, and an integrated counterbalance valve, it delivers safe, steady, zero-drift mast luffing under extreme conditions of heavy load, slurry immersion, and continuous vibration — ensuring both transport and operational efficiency and safety.

This mast cylinder series is the core actuator for mast attitude adjustment on rotary drilling rigs. It drives mast luffing (fore-aft tilting) and correcting (left-right tilt adjustment), precisely setting the mast angle and orientation relative to the ground to ensure borehole verticality. With a large-scale heavy-duty design, a unique multi-stage waterproof sealing system, and an integrated counterbalance valve, it stably holds mast attitude under severe conditions of drilling vibration, slurry splash, and side-load impacts, ensuring hole accuracy and operational safety.

This feed cylinder (crowd cylinder) is the core actuator for the drilling feed system of rotary drilling rigs. It drives the power head (rotary drive) up and down along the mast guide rails while applying continuous, controllable crowd force to the drill string — directly determining penetration rate and borehole quality. Featuring an ultra-long stroke design (up to 9 meters or more), exceptionally high bending stiffness, and a precision sealed waterproof structure, it delivers stable, reliable feed and hoisting power under severe conditions of high drilling pressure, intense vibration, slurry immersion, and frequent reciprocating motion, ensuring safe and efficient deep-hole drilling.

This bucket cylinder series is designed for 20 to 80 metric ton medium and large hydraulic excavators. As the final actuator controlling bucket curl for cutting, loading, and dumping, it directly determines breakout force and cycle productivity. Built to a 35 MPa ultra-high pressure specification, it features high burst force, strong side-load tolerance, and excellent impact resistance. Integrated adjustable cushioning, large-flow dual ports, and a smart sensing interface ensure consistent, efficient output in extreme operations including overburden removal, rock excavation, and heavy-duty truck loading.

This boom cylinder series is engineered for 20 to 80 metric ton medium and large hydraulic excavators. As the core actuator for raising and lowering the boom, it directly determines maximum digging height, reach at dump, and heavy lifting capacity. Featuring a 35 MPa ultra-high pressure design, oversized bore, thick-walled barrel, integrated adjustable cushioning, large-flow dual ports, and smart sensor readiness, it delivers smooth, powerful motion and exceptional durability in the toughest applications such as overburden handling, heavy rock face digging, and deep trench work.

This stick cylinder series is purpose-built for 20–80 ton medium and large crawler excavators. Serving as the core hydraulic actuator for stick extension and retraction, it handles digging, loading, and dumping operations. With a 35 MPa ultra-high pressure design, thick-walled barrel, large-diameter piston rod, high-flow hydraulic control system, adjustable cushion valve, and intelligent sensor interface, it delivers robust force and low downtime in demanding applications such as overburden removal, heavy rock handling, and deep trench excavation.

This track tension cylinder series is engineered for medium and large hydraulic excavators. It continuously adjusts track tension to prevent derailment and slippage, ensuring stable and safe travel. With an ultra-high pressure design (rated 35 MPa), oversized bore, thick-walled barrel, and excellent side-load capacity, combined with long-life sealing and multiple anti-corrosion treatments, it delivers exceptional reliability and durability in extreme environments such as quarries, mines, and swampy terrain.

The bucket cylinder is the final hydraulic actuator for bucket digging, curling, and dumping on mini excavators. It directly determines breakout force, dumping height, and cycle speed. Engineered with high-strength impact-resistant materials, a precision sealing system, and comprehensive surface protection, this cylinder series withstands alternating loads, high pressure, and severe environments such as mud, water immersion, and debris, delivering reliable digging power.

The boom cylinder is the core actuator for mini excavators, directly responsible for lifting and lowering the boom. It determines the machine's digging depth, lifting capacity, and cycle efficiency. Built with high-strength materials, advanced sealing and cushioning technologies, and multiple surface protection options, it delivers stable, safe, and long-lasting performance under heavy digging loads, frequent cycling, and harsh environments.

This stick cylinder is specifically engineered for the extension and retraction of the stick (arm) on mini excavators. It directly influences the machine’s digging reach, breakout force, and loading height. With a compact heavy-duty structure, low-friction sealing system, and multiple anti-corrosion treatments, it delivers consistent, precise power in frequent reversing, high-impact, and aggressive environments.