Allen-Bradley 871A-S478 Spacer Kit for the 871D cylinder provides a precise 4.78 mm (0.188 in) spacer height for in-port tubular proximity sensors. Each kit contains one spacer, one O-ring, and two mounting bolts, delivering everything needed to configure a nonstandard probe length. Designed for use with 871D sensors, the 871A-S478 enables accurate positioning when enclosure geometry or mounting constraints require a specific sensing length. Use with Allen-Bradley 871D cylindrical sensors to achieve repeatable installation and reliable sensing performance.
