Bearingless Axle Encoder for High-Resolution Wheel Center Speed and Acceleration Feedback

Capacity, passenger comfort, and safety are critical requirements in railway transportation. For decades, Baumer has been a reliable partner in the railway industry, contributing its multi-faceted sensor technology to meet these demanding needs. The new high-performance axle encoder BPIK combines years of railway application expertise with cutting-edge technological advancements.

The bearingless axle encoder features a magnet rotor and achieves high-resolution wheel speed measurement. It is ideal for any vehicle bogie application requiring precise speed-related feedback. Designed with robustness in both mechanical construction and sensing technology, this encoder withstands the harsh conditions at the wheel axle while delivering extremely low-jitter signals up to 1200 ppr. The low-noise signals ensure highly accurate and dynamic wheel speed feedback, enabling early detection of torsion vibrations. This allows maximum traction control with minimal wear, even at low speeds or under challenging track conditions.

Up to two independent sensing blocks with galvanic insulation can be integrated, each generating a distinct pulse number for advanced processing by the main control systems. In its standard configuration, the encoder includes customer-specific default pulse numbers without requiring adjustments on the magnet rotor itself.

As all Baumer bearingless encoders, BPIK is virtually maintenance-free and highly resistant to shocks, vibrations, and dirt. Beyond providing speed data aligned with functional safety standards, it also outputs integrated temperature sensor readings.

Baumer distinguishes itself through industry expertise and diverse technological solutions. Its comprehensive product portfolio offers optimal solutions for all bogie system tasks, ensuring compliance with relevant railway standards such as EN50128 and EN50129. Samples of the new bearingless axle encoder BPIK will be available from fall 2016 onwards.

Last Updated: 2025-09-04 23:36:52