UNSPSC 31251600: Robot components

UNSPSC 31251600 Robot components is a Class code. State and local governments procure electric actuators, hydraulic process-control systems, and motion-control subassemblies under this code, chiefly for water and wastewater treatment infrastructure where control reliability is mission-critical. Recent solicitations show municipal buyers purchasing REXA-brand hydraulic actuators, Limitorque and other electric actuator systems, flow-control valve assemblies, and actuator replacement parts to manage treatment-plant operations, maintain regulatory compliance, and standardize aging control equipment across multiple facilities. Water and wastewater utilities dominate this code's activity, driven by the need for preventive and remedial maintenance of flow control systems across pump stations, treatment plants, reservoirs, and remote distribution points. Cities and counties issue the majority of visible solicitations; a transit authority (Dallas Area Rapid Transit) has also competed under the code for a pantograph actuator subassembly. A community college (Mt. Hood Community College in Oregon) recently posted a divergent bid for advanced robotics platforms—humanoid and quadrupedal robots with AI-capable computing—suggesting occasional use of this code for research and workforce-training robotics unrelated to municipal infrastructure control.

Geographic concentration centers in the Southwest and Southeast, with recent activity in Arizona (Phoenix Water Services Department issued two multi-year electric-actuator solicitations in March and June 2026), Texas (City of Waco, Dallas Area Rapid Transit), Georgia (Gwinnett County for slide gates at a filter plant), and Florida (Seminole County, City of Plant City). The City of Phoenix Water Services Department is the standout repeat buyer, issuing overlapping five-year and four-and-a-half-year competitively sealed bids for electric actuators, parts, gearboxes, accessories, and software (IFB-26-0274 due April 2, 2026, and IFB-26-0343 due June 4, 2026 and amended with an extended timeline). Conversely, sole-source and notice-of-intent procurements appear routinely—Seminole County (June 1, 2026, for REXA actuator parts via PRO-CO, Inc.) and Plant City, Florida (April 14, 2026, for REXA actuators via TSC Jacobs at $29,580 estimated cost)—reflecting proprietary manufacturer relationships and the difficulty of substituting control equipment in operating treatment facilities. The City of Austin issued a short-cycle IFQ for a single microprocessor-based positioner (IFQ1100BAS1093 due June 16, 2026), and Gwinnett County solicited sealed bids for four replacement 108-inch slide gates (BL044-26, due May 1, 2026).