The Schindler Suspension Traction Media (also known as STM, originally called TractionMedia) is an elevator hoisting traction rope introduced by Schindler in 2008 along with the Schindler 3300 elevator. It is a successor of Schindler Aramid.
Suspension Traction Media consists of steel cords coated with elastomeric material. It weighs less than conventional steel ropes, takes less space, does not require any oil or lubricant, and runs quieter. STM also saves shaft space because of the smaller motor and traction sheave that is 72% smaller than traditional systems. It is also enviromental friendly, durable, and easy to be installed.
For the safety device, Slack STM Detection Contacts already implemented at the both end of the belt.
- Schindler Suspension Traction Media is very similar to Otis's Gen2 polyurethane coated steel belts and Kone UltraRope.
- For the tooth-liked steel belts, which have a lawsuit to Otis Elevator Company on its polyurethane coated steel belts for Otis Gen2 but they already signed the agreement to settle that case in 2014.
Notes and references
- ↑ Otis and Schindler Announce Settlement and License Agreement, Schindler Group, June 18, 2014.