NIGP 55991: Wheel Truing Equipment and Accessories

NIGP 55991 Wheel Truing Equipment And Accessories, an Item code, covers specialized tools and equipment for straightening and aligning wheels on rolling stock and transit vehicles. State and local governments procure under this code primarily through transit authorities and specialized maintenance contractors performing overhauls of streetcars, light-rail vehicles, and comparable fleet assets. The work involves both the acquisition of truing equipment and the contracting of overhaul services where wheel maintenance to original equipment manufacturer specifications is a core component of vehicle system restoration.

Charlotte Area Transit System (CATS) posted RFP 26920272117 on August 18, 2026, seeking proposals for CATS IV Streetcar Truck Overhauls due October 20, 2026. The scope encompasses truck, hydraulic, and braking system overhauls on Siemens trucks at 15-year / 270,000-mile maintenance intervals, with low-floor axles and wheelsets serviced at 300,000-mile intervals and journal bearing equipment at 6-year / 310,000-mile intervals—all to OEM standards. The contracted vendor performs maintenance at a facility CATS coordinates through its Rail Inventory department, with CATS's Reliability, Condition & Maintenance department handling equipment removal and shipment preparation. Recent activity centers on transit authorities in the Southeast managing aging streetcar and light-rail fleets requiring scheduled overhaul cycles to sustain reliability and on-time service through vehicle end of useful life.