The Siemens 7MH7188 bend pulley, also referred to as a return belt pulley, is an accessory for conveyor applications and is used in connection with belt scales and speed measurement. The pulley is driven by the return belt of the conveyor and provides the rotational movement required for shaft-driven speed sensors.

Belt speed measurement is an essential part of accurate belt scale operation. In combination with a suitable speed sensor, the bend pulley supports reliable detection of conveyor belt movement. This enables the weighing system to correctly calculate and evaluate the material flow on the belt.

The 7MH7188 version is designed as a return belt pulley with a diameter of 8.5 inches. The version with lagging improves contact between the pulley and the conveyor belt and supports consistent transfer of belt movement to the speed sensor.

This accessory is suitable for industrial conveyor installations where a robust and reliable mechanical coupling for speed detection is required. Typical applications include belt scales, conveyor monitoring and weighing systems in the process industry, bulk solids handling and material conveying.