Hydraulic automatic bollard mainly consists of oil pump unit and steel frame construction. It uses oil pressure as dynamic to realize the rise/fall of bollard. As a moving device, it is usually installed at vehicle entrance/exit. It rises to block the vehicle and falls the ground level to authorize free passing.

Features: 

A: quality hydraulic pump could be built-in or in separate control cabinet 
B: steady hydraulic pressure make the operation more steady
C: could be integrated with parking barrier and all kind of access control system
D: high impact resistance make it suitable for anti-terroist use or high secutity application

Parameter:

diameter: 220mm/275mm
height: 600/750/900mm
material :steel/stainless steel 
operate time :10cm/sec-rise 20cm/sec-down
Impact resistance: 20,000 Joules (without damager)
hydraulic pump : build in or in separate control cabinet