Parker Pneumatic
2AJ / 2ANJ Series Heavy Duty NFPA Rodlock Air Cylinders

Key Features

  • 13 Standard mounting styles
  • Bore sizes – 11/2" to 8"
  • Strokes – up to 120"
  • Piston Rod Diameters – 5/8" to 21/2"
  • Working pressure up to 100 psi
  • Single and double rod construction available
  • Temperature range – -10°F (-23°C) to +165°F (+74°C) (depending on seal class)

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Rod Lock Features

  • True Bolt-on Modularity – the cylinder is built and tested as a stand alone unit. The Rod Lock is then assembled and tested at rated holding force.
  • Large Rod Lock Clamping Surface – provides uniform force to the rod contact area. This allows holding forces to resist 100 psi input on the cylinder cap end for most bore and rod combinations.
  • Spring-engaged, air-released operation – ensures positive holding in power-off situations with minimal air volume required for release.
  • Manual release is standard – cam operated release disengages the Rod Lock with a simple turn of a hex bolt. The default-to-lock function springs back to the engaged position when released.
  • Rod Lock is sealed to withstand harsh environments – NEMA 4X rating protects internal components from contamination

Benefits of using a piston Rod Lock include:

  • Prevents rod movement upon release of stored energy
  • Eliminates the need for pilot operated check valves for load holding
  • Eliminates complicated piping between pilot operated check valves and the cylinder