Commercial Pressure Vessels
Hydraulic Accumulators
Lightweight repairable bladder accumulators engineered for hydraulic systems where weight, durability and packaging matter.
Steelhead's accumulator families span compact 4-liter units through 30-gallon high-pressure bladder accumulators and 40-gallon low-pressure systems.
Lightweight fluid-power storage
Composite accumulator technology for demanding hydraulic systems.
Steelhead's accumulator portfolio includes aluminum-lined Type III composite shells and all-aluminum Type I shells engineered to reduce system weight while supporting demanding mobile and industrial hydraulic applications.
The family includes high-pressure top- and bottom-loading PowerMax bladder accumulators, compact MicroMax bladder accumulators, and low-pressure AccuLite units.
300–6,000 PSI
Product families span low-pressure through high-pressure hydraulic service.
4 L–40 gal
Configurations range from compact bladder accumulators to large 40-gallon low-pressure systems.
Type III Composite + Type I Aluminum
Type III composite platforms use aluminum liners and carbon-fiber reinforcement, while AccuLite uses all-aluminum Type I construction.
Accumulator families
Three established platforms for a wide range of hydraulic applications.
Compare pressure range, construction and service strategy across Steelhead's commercial bladder accumulator portfolio.
PowerMax Series
6,000 PSI Composite Bladder Accumulators
High-pressure Type III composite accumulators with top- and bottom-repairable configurations. Both use a seamless 6061-T6 aluminum liner, carbon-fiber structural reinforcement and an external glass-fiber protective barrier.
Top Repairable
Bladder service through the gas-port end allows maintenance without removing the accumulator from the installed system.
- 6,000 PSI / 414 bar
- 5- to 30-gallon configuration
- 12-inch nominal diameter family
- 3.5-inch industry-standard steel oil-port opening
Bottom Repairable
Large-port architecture supports service access from the oil-port end, traditional steel threaded connections and enhanced neck-mount support.
- 6,000 PSI / 414 bar
- 10–30 gallon configurations at 6,000 PSI
- All configurations also available at 3,000 PSI
- Threaded or flanged oil-port interface
MicroMax Series
MicroMax
3,000–5,000 PSI Bladder Accumulators
Compact Type III bladder accumulators for weight-restricted, mobile and industrial applications, including remote, elevated or access-limited installations.
AccuLite Series
AccuLite
300 PSI Type I Bladder Accumulators
Lightweight all-aluminum accumulators for lower-pressure systems where corrosion resistance and reduced structural loading matter.
PowerMax Series
6,000 PSI bladder accumulators with top- and bottom-repairable configurations.
PowerMax combines a seamless 6061-T6 aluminum liner with carbon-fiber structural reinforcement and an external glass-fiber protective barrier.
Top Repairable
Bladder service through the gas-port end can reduce the need to remove the accumulator from the installed system.
Bottom Repairable
Large-port architecture supports traditional fluid connections and service access from the oil-port end.
High-Cycle Composite Structure
Carbon-fiber composite reinforcement over an aluminum liner with an additional glass-fiber protective layer.
PowerMax construction details
Composite reinforcement and port architecture up close.
A closer look at the PowerMax composite structure and machined port interfaces used in the high-pressure bladder accumulator platform.
PowerMax in application
Bottom-repairable PowerMax installed in customer equipment.
Customer installation photos show the composite bladder accumulator integrated into a compact hydraulic equipment frame with direct fluid connections and restrained mounting.
MicroMax Series
Compact bladder accumulators from 3,000 to 5,000 PSI.
MicroMax provides a smaller Type III composite accumulator for weight-restricted mobile and industrial systems.
3,000 PSI Family
1 & 1.3-gallon configurations available.
5,000 PSI Rugged Family
1.3-gallon configuration available.
6.5–6.7 in OD
Compact diameter supports tighter hydraulic-system envelopes.
AccuLite Series
300 PSI all-aluminum accumulators for lightweight, corrosion-resistant systems.
AccuLite uses a seamless 6061-T6 aluminum shell to provide a lower-pressure bladder accumulator for mobile and weight-sensitive applications.
10–40 Gallons
Seven standard capacities from 38 to 151 liters.
300 PSI / 21 bar
Designed for lower-pressure hydraulic accumulator service.
Aluminum Construction
Natural corrosion resistance with optional powder coating and protective overwrap.
Applications
Designed for mobile, industrial and weight-sensitive hydraulic systems.
Mobile Equipment
Hydraulic energy storage where vehicle or equipment mass matters.
Industrial Systems
High-cycle hydraulic systems requiring durable, predictable accumulator performance.
Remote Installations
Compact composite systems for elevated, remote or difficult-to-access locations.
Weight-Restricted Platforms
Applications where reducing accumulator and support-structure mass improves system integration.
Engineering support
Match accumulator architecture to the hydraulic system.
Steelhead can help evaluate pressure, fluid volume, mounting envelope, service strategy and connection requirements for hydraulic accumulator applications.
Pressure & Volume
Select the family and capacity around the hydraulic duty cycle and required stored energy.
Serviceability
Choose top-repairable or bottom-repairable configurations.
System Integration
Review fluid connections, mounting, available envelope and application environment.
Aerospace accumulator solutions
Looking for MicroForce diaphragm accumulators?
MicroForce ultra-compact diaphragm accumulators are positioned within Steelhead's aerospace offering for applications where extreme weight reduction and compact packaging justify a specialized solution.
Talk to a hydraulic accumulator expert
Which Steelhead accumulator fits your hydraulic system?
Share pressure, volume, duty cycle, serviceability and packaging requirements with Steelhead.