Kencor, Inc. has always made a commitment to quality and timely service. Our staff estimators, project managers, field engineers and superintendents with Qualified Elevator Inspector (QEI) qualifications. Plus, our staff has installed thousands of hydraulic and traction elevators, so Kencor, Inc. is well equipped to meet your construction requirements. Using non-proprietary equipment from the most respected manufacturers in the industry, our team’s applied experience ensures that construction is the most streamlined and respectful to the productivity of your building. Because of our extensive experience, we have developed certain knowledge about elevator types.
In this two-part article, we want to share with you some of the generals and the benefits and drawbacks to certain types of elevator systems.
In-Ground Hydraulic Systems are the traditional design used for hydraulic elevators. It utilizes a single hydraulic jack installed in the ground. The hydraulic jack is located directly below the elevator car, near the center of the platform. It is the easiest type of elevator to install, as there is no extensive pit or overhead clearance required, but this option does require jack hole drilling which can be expensive and not always possible. It also comes in a Rear/Side Slung variation, which accommodates front and side openings.
Twin Jack Holeless models utilize two hydraulic jacks, located on each side of the elevator car, and provides maximum structural ability. No jack hole drilling is required, and it can accommodate front and rear openings. But the Twin Jack Holeless requires more overhead space and a wider hoist-way.
Cantilever Roped Hydraulic elevator systems are a holeless system where wire ropes are utilized in conjunction with a hydraulic jack. The elevator car is lifted with a 2:1 ratio, which means that for every foot that the hydraulic jack rises, the elevator car rises two feet.
No jack hole drilling is required, for heights as much as 100 feet, which reduces cost and eliminates the possibility of ground contamination. Accommodates front and side openings; no extensive pit or overhead clearance is required. But additional hoist-way space and more installation time are required.