Crown Industries Heavy Duty Industrial Doors: Hydraulic Doors vs. Cable Doors

	Hydraulic Bi-fold Door	Hydraulic Single Piece Door	Cable Bi-fold Door
Speed	Up to 20' per minute	Up to 20' per minute	11 to 13' per minute
Door Locks	No Door Lock Required	No Door Lock Required	Manual or Mechanical Autolock
Door Close - Power Outage	Manual Release Valve	Manual Release Valve	Back-up generator, Handcrank if door is counter-weighted, Service Call
Door Open - Power Outage	12V DC, or Implement Hookup	12V DC, or Implement Hookup	Back-up generator, Handcrank if door is counter-weighted, Service Call
Maintenance	Lubricate hinges	Lubricate hinges	Lubricate Hinges, Replace straps and cables, Replace springs
Safety	No pinch points	No pinch points	Many pinch points, but all are covered on a Crown Door
Bottom Roller Load	Minimal	No Bottom Roller	The higher the opening, the greater the load on the building
Operator	Remote - Mount anywhere in building	Remote - Mount anywhere in building	Bottom operator on door
Pressurized Building, High Winds	Rollers are always captured, keeps the bottom half on the building	Entire door captured by hydraulic cylinders	Rollers are only captured when door is in the down position

Serving Minnesota, the midwest and the nation with design and manufacturing of doors for hangars, shops, farm sheds, warehouses and everything in between. Specializing in hydraulic bi-fold, hydraulic one piece, cable bifold, bottom rolling and large custom doors.