Hydraulic Lifts vs Traction Lifts
When someone visits a bustling city and takes an elevator to the 69th floor of a skyscraper, they probably don’t stop to wonder how the elevator was able to carry them and 14 other people to the top. Elevators must be strong enough to carry passengers or materials and equipment up and down without noticeable effort. This is accomplished using one of the two most common elevator lifting mechanisms: Hydraulic or Traction.
But what differentiates them? What are the benefits of each?
Comparison
A hydraulic lift uses fluid and pressure to push things away from itself, generally upwards against gravity. A traction lift typically utilizes a pulley system of some sort to pull upwards, taking up more space. Below we have compiled details regarding the pros and cons of each type of lift.
Traction
Pros
- Can safely travel higher than sixty feet without breaking a sweat
- Can often be quieter and, when used in elevators, may make the ride quieter
- Often are more energy efficient
Cons
- Much more restricted in matters of weight
- Can take four to six weeks longer to install
- More expensive to install and maintain
Hydraulic
Pros
- Can move heavier loads
- Installation takes less time
- Takes up less space
Cons
- Generally travels at a slower speed
- The oil used is temperature sensitive
- These can produce a large amount of heat
Additional Information
Find more in-depth information about Hydraulic and Traction Lifts below.
Traction
As mentioned above, traction lifts often use a pulley system that consists of gears and a crane. The pulley system lifts the elevator, a generally more energy efficient system. However, this system can wear out much faster than a hydraulic lift and will require frequent maintenance. Traction lifts are commonly used in elevators. In an elevator system, traction lifts require a counterweight mechanism to offset the weight of the cab and patrons.
Hydraulic
Hydraulics work with an electrically powered pump that uses pressurized hydraulic fluid in a cylinder casing, lifting the elevator upwards from below. There are two different types of hydraulic lifts:
Holed
Hydraulic lifts that are “holed” have hydraulic cylinders placed inside of a drilled hole and can allow up to 60’ of travel distance.
Non-Holed
Non-holed hydraulics don’t require drilling a hole, making them simpler and easier to install in preexisting buildings or areas where drilling would be expensive or difficult. It should be noted that non-holed hydraulics shouldn’t be installed with an expectation to travel more than 40’.
Want to Learn More?
Knowing the difference between traction and hydraulic lifts is important. Here at MLM Lifts & Manufacturing, we strive to meet our client’s needs and increase productivity through simple design and operation. If you want to learn more, we are ready and waiting to answer any questions you have. Contact us today to receive a quote.