Hydraulics and traction passenger lifts, and goods lifts.

Elevators with Gears

A gearbox connected to the motor drives the wheel and moves the ropes in geared elevators. Geared machines can reach speeds of up to 500 feet per minute. In terms of initial investment, maintenance costs, and energy consumption, these models will be in the middle of the road.

Elevators with no gears

The sheave is attached directly to the end of the motor in gearless traction elevators. These models can reach speeds of up to 2,000 feet per minute. These models have a high initial investment cost as well as average maintenance costs. However, they use less energy than geared traction elevators.

ELEVATORS HYDRAULIC

Hydraulic elevators, unlike traction systems, do not use overhead hoisting machinery. Instead, these elevators use a fluid-driven piston mounted inside a cylinder to lift a cab. The required fluid is traditionally oil-based, but it can be replaced with vegetable oil to reduce environmental impact.

Hydraulic systems, as opposed to traction elevators, are:

1. Installing is less expensive.
2. Maintenance and repair costs are lower.
3. Better for hauling heavy loads.
4. Designed for use in low-rise applications.
5. Because hydraulic elevators operate at slower speeds than other types of elevators — typically 150 feet per minute or less — they are most commonly found in buildings with up to five stories.

Another reason for their height restrictions is that raising an elevator cab several stories requires a lot of energy. A longer cylinder and piston would be required to reach high floors with a hydraulic elevator.

Hydraulic elevators are classified into two types:

Holed

The hydraulic cylinders in the holed type of hydraulic elevator are placed inside a drilled hole and allow up to 60' of travel.

Holeless

Because a drilled hole is not required for a holeless hydraulic elevator, this type of elevator is ideal for existing buildings or areas where drilling would be too difficult or expensive. Hole-less elevators should not be installed anywhere where more than 40 feet of travel is required.