Match the part number, measurements and connection points that apply to your trailer.
| Hub Face | Measure hub face to hub face. |
|---|---|
| Spring Center | Measure mounting centers and confirm perch configuration. |
| Capacity | Match the required axle rating. |
| Brakes | Confirm brake type and flange configuration. |
Upgrade to instant, proportional braking that eliminates surge lag and provides total control when backing up or navigating steep grades.
The Hydrastar 1,000 PSI actuator is the ultimate performance upgrade for trailers with hydraulic drum brakes. This Electric-Over-Hydraulic (EOH) system triggers the moment you touch your vehicle's brake pedal, delivering smooth, jerk-free stopping power that matches your vehicle's braking intensity without the "push" feeling common in surge systems.
This system is a game-changer for marine trailers where corrosion and steep ramps are constant factors.
Compatibility: Designed specifically for hydraulic drum brakes. Not for use with disc brake systems.
Vehicle / System Fit: Suitable for single or tandem axle trailers with a total rating up to 7,000 lbs.
Installation Notes: Requires an in-cab electric brake controller and a 5-amp-hour breakaway battery kit (sold separately).
Performance Insight: The extruded anodized aluminum housing provides superior salt-water resistance for marine applications.
Use the following checklist to ensure a successful conversion from surge couplers to EOH:
Eliminate surge lag; brakes activate immediately upon pressing the vehicle brake pedal.
No manual lockouts or pins required to back up, even on inclines or ramps.
Anodized aluminum housing and weathertight seals defend against water and grime.
Electronic valve mirrors vehicle braking intensity for smooth, balanced stops.
| Specification | Detail |
|---|---|
| Part Number | HBA-10 |
| Product Type | EOH Actuator |
| Max Pressure | 1,000 PSI |
| Material | Anodized Extruded Aluminum |
| Dimensions | 11.75" x 3" x 7.375" |
| Power Input | 12V DC |
| Port Size | 3/16" Hydraulic Port |
| Category | Details |
|---|---|
| Axle Count | Single or Tandem Axle |
| Max Capacity | 7,000 lbs |
| Brake Type | Hydraulic Drum Brakes |
| Notes | Not compatible with Disc Brakes (requires 1,600 PSI). |
| Quantity | Item |
|---|---|
| 1 | Hydrastar 1,000 PSI Actuator Unit |
| 1 Set | Frame Mounting Hardware |
| Built-In | Bleeder Screw for Maintenance |
| 4-Wire | Pre-attached Lead Wires (Black, Blue, Yellow, White) |
Selected from R&P customer feedback for Trailer Axle / Running Gear products and related trailer service.
“Got me the axle I needed right away with custom spring perch setting.”
“Had a trailer made to my needs.ken was able to get it done and at a price that was very acceptable.i have bought parts there for 2 other trailers and always in stock”
“Quality work. Staff is polite. Great job welding a project for me. Didn't even want to charge me, so I bought them a case of Corona. They were ecstatic. I ever need a welding or like that R&P Carriages is #1 !!!!!”
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