Piston Accumulators A280 Series

The ASHUN A280 Series Piston Accumulators are engineered for demanding heavy-duty hydraulic systems, offering large-capacity energy storage and heavy shock absorption. Certified to the PED 2014/68/EU Module H1 standard and manufactured under AS 9100 aerospace-grade quality control, they ensure high operational reliability for global fluid power applications.

Maximum Working Pressure Up to 280 bar (4000 psi)
Nominal Volume Range from 0.5L to 100L
Standard Piston Speed Up to 1 m/s
Operating Temperature from -30°C to +80°C

Specification

Specification	Parameters
Max. Pressure	280 bar (4000 psi)
Nominal Volume	0.5 L ~ 100 L
Piston Diameter	Ø80, Ø100, Ø160, Ø180, Ø250 mm
Piston Speed	1.0 m/s
Operating Temp.	-30°C to +80°C (NBR)
Certificate Code	PED 2014/68/EU (Module H1)
Gas Connection	5/8"-18UNF

Description

Product Description

The ASHUN A280 series piston accumulators are developed for large-scale, high-pressure industrial applications requiring instantaneous high-flow release to compensate for internal leakage. They also serve as a stable counterbalance solution for heavy machinery. The cylinder barrels feature a highly refined internal surface that reliably accommodates the dynamic energy storage demands of high-pressure circuits.

Compared to traditional bladder accumulators, the A280 series, backed by manufacturing expertise accumulated since 1984, delivers higher compression ratios and a significantly longer service life. Their robust structure effectively absorbs pipeline shocks, substantially enhancing the long-term stability of fluid power systems.

Product Features

Floating Piston Design: Internal guide rings effectively prevent metal-to-metal physical contact between the piston and barrel, reducing wear during prolonged operation.
Flexible Installation: Feature high mounting adaptability, supporting zero-dead-angle integration in any orientation within the hydraulic circuit.
Multiple Sealing Materials: Available with comprehensive NBR and FKM sealing options to precisely accommodate various fluid characteristics and temperature requirements.
Premium Anti-Rust Treatment: Finished with a high-protection anti-rust primer to effectively extend environmental endurance and service life under harsh conditions.

Solutions

Construction Machinery

Construction equipment operates in punishing environments characterized by extreme climates, heavy dust, and intense vibration. Equipment stability is the ultimate key to maintaining project schedules. ASHUN provides highly durable custom hydraulic cylinders and high-torque rotary actuators specifically engineered for excavators, loaders, and heavy-duty construction vehicles. Our solutions feature superior anti-side-load capabilities and extreme precision, ensuring flawless performance under heavy loads, high pressure, and continuous operation—conquering the toughest job site challenges.

Lifting Equipment

Material handling equipment carries extreme risks to human safety and valuable assets; every lift and rotation must be flawless. For aerial work platforms (AWPs), cranes, tail lifts, and jacking systems, ASHUN delivers custom hydraulic cylinders integrated with fail-safe mechanisms and rotary actuators for high-precision positioning. We guarantee smooth, zero-leakage performance under heavy aerial loads and high-frequency lifting conditions.

Military and Aerospace

In defense and aerospace applications, mission success is paramount, and hydraulic system failures are strictly zero-tolerance. Certified by the AS9100 Aerospace Quality Management System, ASHUN provides custom hydraulic cylinders and high-torque rotary actuators engineered with exceptional safety factors for armored vehicles, radar antennas, and ground support equipment (GSE).

Agricultural Machinery

From soil preparation to harvesting, agricultural machinery is constantly exposed to mud, dust, and erratic weather. ASHUN provides weather-resistant, leak-proof custom cylinders and precision rotary actuators for tractors, combine harvesters, and diverse attachments. Our high-load capacity ensures uninterrupted, high-efficiency operation during critical farming seasons.

Smart Automation/Industry 4.0 or Robotics Industry

In the era of smart manufacturing, heavy robotics and automated equipment require actuation that combines high power density with precise data feedback. ASHUN empowers heavy-duty robotic arms, AGVs, and automated production lines with smart-sensor-integrated cylinders and high-precision rotary actuators, seamlessly bridging the gap between traditional hydraulics and Industry 4.0 servo-hydraulics.