The BEI Sensors/Sensata part 01002-7491 is an incremental rotary encoder with a 2.5 diameter. This durable and accurate encoder is designed to provide precise positioning and motion control in various industrial applications. With its compact size and reliable performance, it is an ideal choice for applications that require high-speed and high-resolution rotary feedback. The encoder features incremental quadrature outputs, which enable easy integration with a wide range of control systems. Its robust construction ensures durability even in harsh environments, making it suitable for use in industries such as automation, robotics, and machinery.