Design utilizes two hydraulic jacks, which are located on each side of the platform and installed on the pit floor.  Jacks can be single stage or two stage telescopic.  Single stage jacks can accommodate approximately 12’-6” of travel. Two stage telescopic jacks can accommodate approximately 26’-0” of travel.  Travel may dictate the pit and overhead clearance requirements.

Advantages Disadvantages
  • Available with low and high capacity elevators
  • Accommodates passenger or freight loading
  • Allows for front and rear openings
  • Jack hole is not required which eliminates cost of drilling and reduces risk of oil contamination
  • May require a larger hoistway width due to jacks mounted on each side of the platform
  • Additional pit and overhead may be required with higher travels
  • Side opening not an option
  • Material costs are typically higher compared to an in-ground application


Cantilever Roped
The design utilizes wire ropes in conjunction with a single hydraulic jack to lift the elevator at a 1:2 ratio. For each foot the jack rises, the elevator rises two feet. The platform is supported by a cantilevered car frame with the jack, rails, and roping located on one side of the hoistway.

Holeless Dual Single Stage
The design utilizes two hydraulic single stage jacks, located on each side of the platform and installed directly on the pit floor.

Holeless Dual Two Stage
The design utilizes dual two stage telescopic hydraulic jacks, located on each side of the platform and installed directly on the pit floor.

Passenger Dual Roped
The design utilizes wire ropes in conjunction with two hydraulic jacks to lift the elevator at a 1:2 ratio. For each foot the jack rises, the elevator rises two feet.

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