BEI Duncan Encoders offer an excellent choice of Modular, Kit and Enclosed Shaft Encoder designs ideally suited for a wide variety of applications and the latest new product in Opto-ASIC Miniature Frameless Caliper Encoder, the MOD700 (shown above). Our phased-array ASIC technology allows for the widest air gap in the industry, with an approximate 0.030" air gap vs. other masked technology processes requiring air gaps of 0.003-0.005". This enables most Duncan encoders to be very tolerant, enabling them to be installed easily without tight tolerance constraints. Resolution ranges are available up to 2540 ppr. Commutation is also available.