A flat, fibre-reinforced polymer belt used as a hoisting element in some modern traction elevators, replacing round steel ropes.
Full Definition
Elevator flat belts (also called coated steel belts or flat ropes) consist of multiple small-diameter steel cords embedded in a polyurethane jacket, formed into a flat, flexible band typically 30–100 mm wide and 3–5 mm thick. The large number of fine cords distributes load and allows a much smaller drive sheave diameter than conventional round ropes, enabling compact gearless machines. The polyurethane coating provides corrosion protection, eliminates the need for lubrication, reduces noise, and extends service life. Flat belts are proprietary to specific manufacturers (e.g., Schindler, Otis) and require dedicated sheave groove profiles. Termination methods differ from wire rope, using clamp or resin-cast terminations. Inspection uses electromagnetic or visual methods to detect cord damage. EN 81-50 covers safety criteria.
