Power Units
Hydraulic, air, and electronic power units for driving Johnson brake systems. Units are configured per application — pump size, motor, control type, and options are selected to match the connected brake(s).
Hydraulic Power Units
Custom hydraulic power units for any application, including marine, high-heat, corrosive, explosion-proof, and PLC-controlled environments. Every unit is customized to the customer's application — the naming convention below indicates configuration, not a fixed catalog.
| Code | Meaning |
|---|---|
| HL | Low demand unit (depends on number and type of brakes) |
| HU | Moderate demand unit (used with TL brakes and when multiple DS brakes are connected to one unit) |
| SD | Solenoid Dump — slow release, quick set control (parking brakes, holding brakes, low usage brakes) |
| SR | Solenoid Release — quick release, quick set |
| SRD | Two-stage braking — quick release, mechanically controlled set |
| CLC | PLC controlled (by customer or Johnson PLC unit) |
| M | Manual control |
Example Unit — HL112SRDM Hydraulic Control Unit
Options: 0.6 cu.in double acting hand pump, Manual Lowering Panel, 2-Stage Braking, Explosion Proof Motor (rated for 55°C ambient)
Full dimensional drawings and circuit schematics available on request.
Air Power Units
Air-driven power units (series ACP) for pneumatic brake control, built to the same custom-per-application approach as our hydraulic units. Detailed specifications for this series are pending — contact us with your application details and we'll configure the right unit.
Electronic Power Units
Electronic power units (series ECP) for brake control on systems that call for electronic actuation and control logic. Detailed specifications for this series are pending — contact us with your application details and we'll configure the right unit.
Need a Power Unit Configured?
Tell us about your brake system and application, and we'll match a power unit to it.
Request a Quote