Balluff BGL000R Slot Sensor

Balluff BGL000R is a compact optical fork sensor (slot sensor) with a 20 mm fork gap, designed to detect the presence or absence of an object passing through the slot. Marketed as the BGL 20A-001-S49 variant, it combines emitter and receiver in a single fork housing for non-contact sensing in industrial automation tasks. The sensor's body measures approximately 58 × 40 × 10 mm, enabling mounting in tight spaces along conveyors, fixtures, or automated equipment. When an object interrupts the light beam in the 20 mm slot, the device generates a switching signal to indicate presence or absence, making it suitable for part-detection, end-of-travel sensing, and alignment checks in manufacturing lines. The BGL000R is part of Balluff's family of slot sensors that are deployed across automation applications requiring reliable, vibration-tolerant detection with quick swap capability in challenging environments. For integration, it supports standard industrial wiring schemes and is compatible with common control architectures used in machine automation. This model is widely stocked by Balluff and distributors, reflecting its status as a go-to 20 mm fork sensor for precise slot-based detection in plastics, electronics, and packaging lines where tight tolerances and rapid sensor changes are essential.