Hydraulic retractable bollards or Automatic Hydraulic Bollards are designed for high-security vehicle entrances, military, industrial, governmental and commercial buildings or streets which are closed to vehicle traffic between certain hours of the day. The drive unit is hydraulic, but in the case of power, the failure bollard can be lowered or lifted manually with the help of manual hand pumps. With the help of PLC-controlled electronics, raise/lower function can be achieved by every kind of card reader, a biometric reader like fingerprint or hand shape, radio control, on/off key switch, etc. Besides, safety accessories like photocells, inductive loop detectors, flashing lights, or red/green lights can be integrated into the system.
|Height when raised||400-1200 mm|
|Environmental durability||316 stainless steel sleeve, underground parts are hot dip galvanized|
|Axle load||50 tons|
|Power failure||Manual hand pump|