Walker Process Equipment began producing spur gear drives for pier-supported collectors in the mid-1950s. Many of those early installations are still in operation after over 50 years’ continuous operation. Since development of the first drive assemblies, the design has been continuously updated to improve all aspects of the design and to comply with all current ANSI/AGMA design criteria. The latest feature includes a high-accuracy torque monitoring system that uses a load cell to provide a local digital display output that can also be transmitted with a 4-20 ma signal. 630/892-7921; www.walker-process.com; Booth 626