When you ride an elevator in a hotel or office building, gear less traction is very likely to be the drive system you are experiencing. This type of drive combines the cables of a winding drum system with the counterweights of a chain drive, resulting in a whisper-quiet installation.
On the downside, cables are still cables – only with a traction elevator, there are 2-3 times as many as there would be with a comparable winding drum, and they are more difficult to install and remove. Since all elevator cables need to be swapped out every five years or so, this means a large increase in maintenance costs.
A gearless traction drive home elevator is a good choice for high-end installations, but you should keep in mind that, with its associated maintenance expenses, traction drive is an expensive gift that keeps on taking.
- Very quiet
- Popular in commercial applications
- Most expensive system short of vacuum tube
- Multiplies the problems of cables with more length and complexity