Quiet drive compressor for 1-20 retractable bollards

There are 3 different drive motors in use from Poller, and these are as follows, which I have written down for you. 

electric spindle in the motor 

Advantage: 

• connect cable
• no great effort 

Disadvantage: 

• Technology installed in the bollard
• not IP69 waterproof (the system breaks down in heavy rain) 
• If a person jumps on it, it will break 
• extremely sensitive 
• Too much technology installed, force sensitivity, limit switches, everything can and will break 
• Motors overheat quickly, as heat cannot be dissipated 
• A heating and drainage system must be installed 
• In frost, the motor would be cold, use it 10 times and the motor forms condensate water in the housing, the motor breaks down 
• The piston rod has no protection, no metal scraper, no grease chamber, no low-temperature sealing rings from -35° 
• Service only possible by a specialist technician, complex, everything must be disassembled. Costs per bollard with transport including parts approximately 2500 Euro 

Hydraulic drive 

Advantage: 

• Powerful, pushes 1 ton (is that needed?) 

Disadvantage: 

• Technology installed in the bollard 
• not IP69 waterproof (the system breaks down in heavy rain) 
• Every 4 years a complete oil-hydraulic hose replacement must take place, otherwise no insurance coverage (costs per bollard approximately 2500 Euro) 
• extremely sensitive 
• Too much technology installed, force sensitivity, limit switches, everything can and will break, everything is installed in the bollard. Poor maintenance and access 
• A heating and drainage system must be installed 
• In frost, the motor would be cold, use it 10 times and the motor forms condensate water in the housing, the motor breaks down 
• The piston rod has no protection, usually no stainless steel, no metal scraper, no grease chamber, no low-temperature sealing rings from -35° 
• Service only possible by a specialist technician, complex, everything must be disassembled. Costs per bollard with transport including parts approximately 2500 Euro 
• Costs in the worst case: 
• Compressor: 180 Euro 
• Valve: 50 Euro 
• Shipping costs 24h express 10 Euro

Costs in the worst case: 

Transport costs approximately: 750 Euro 

Dismantling the bollard, 2 men for 8 hours approximately 1500 Euro 

Hydraulic pump installed in the bollard approximately 1300 Euro 

Hotel costs if the second day or parts are needed approximately 200 Euro 

Pneumatic drive 

Advantage: 

• Powerful, pushes about 450kg at 10Bar 
• No technology built into the bollard, so nothing can break 
• Genuine IP69 waterproof, flooding, heavy rain, snow, water, road salt no problem 
• Piston rod has metal wipers, low-temperature sealing rings with -35°, grease chamber, stainless steel piston rod (all made in Germany) 
• Lift cylinder operates well over 500,000 cycles without maintenance 
• No built-in force sensitivity, limit switch, control, (not required for compressed air) 
• Heating, lifting pump, drainage is not needed 
• Overheating not possible, as there is no built-in motor in the bollard 
• Cable/hose package up to 500 meters possible
• Valve + quiet compressor is located in the house, easily accessible, easy to replace by laypersons 
• Significantly cheaper to purchase, costs, replacement, 

Costs in the worst case: 

Compressor: 180 Euro 

Valve: 50 Euro 

Shipping costs 24h express 10 Euro

(Replacement can be done by laypersons, each component has a quick coupling) 

Support is also possible via WhatsApp video, FaceTime, etc... 

Disadvantage: 

• Cable package must be brought into the house, or the control cabinet must be relocated. Compressor takes up about 50 x 50 x 15cm of space