Automatic Stainless Rerractadle Security Bollards

Bollard Structure:Bollards consist of three parts: tin outer casing, sleeve and post. The bollard includes a detachable top cover, which allows access and treatment of the piston piping, observation, treatment and adjustment of limit switches. An 8-ton wheel can pass over the standing bollard and the cover. The post and the piston, including the piston casing, can be removed from the casing. The bollard cover has screws made of stainless steel and includes the bollard movement system and a plastic ring that prevents water penetration into the casing and scratching while the bollard is in motion. The sides of the posts base move through tracks that are part of the casing. The bollard sleeve fits exactly into the casing. The casing includes a fluid drain. The casing connects to the concrete and is galvanized and hardened to prevent warping during casting. The pistons connecting rod is attached to the bollard cover with a bearing at its end. The bollard is harnessed onto a base and does not move while activated. The bollards motion is continuous and smooth, without rattling and each of its movements ends with a quiet, gentle stop. The piston contains air bags at its ends. Bollard dimensions:Diameter: 203.2 mm Height above ground: 700 mmOverlap of the bollard and casing: 350 mm Thickness of bollard wall: 12 mmSchedule tube without ST-52 steel seem Piston:The piston seals are appropriate to continuous work without greasing and endure at least 25 million cycles before being replaced. The pistons diameter allows raising at working pressure of 6-10 atmospheres or less. The piston is ISO certified and manufactured in Germany by Festo using materials that are extremely resilient to moisture and corrosion. The piston cylinder is 63 mm in diameter, and the piston can lift up to 180 kg. The bollard sleeve includes end limit switches installed with protection rating of at least IP64.