Product Description:

The AI2512121C02B is an absolute rotary encoder manufactured by Danaher for the Dynapar Encoders series. Installed with a clamping hub, the device couples directly to a machine shaft and converts rotation into digital position words that motion controllers use to verify angles, count turns, and synchronize axes after power-up. Its built-in multi-turn counter lets systems track complete revolutions without external sensors, making the encoder a common feedback element in packaging lines, pick-and-place robots, and precise indexing tables.

Position fidelity is supported by an absolute accuracy of ±0.01°, while repeated readings remain within ±0.002°, providing consistent fine-angle confirmation. Each revolution has a single-turn resolution of 12 bits, and the multi-turn resolution is also 12 bits for long-range tracking. A glass code disc reduces thermal growth that could skew readings, and the aluminum enclosure has an ingress protection rating of IP67, so liquid splashes or temporary submersion do not disturb the optics. The stainless steel shaft has a diameter of 10 mm and supports continuous operation at speeds up to 10,000 rpm without signal dropout. Repeatable mounting is aided by the clamping-style interface, while binary output coding allows direct interpretation by standard PLC inputs.

The shaft withstands an axial force of 9 lb and a radial side load of 13 lb without exceeding the bearing load limits, allowing the encoder to support direct-drive arrangements. During brief acceleration events, the rotational speed can reach 12,000 rpm, providing headroom for temporary overshoot conditions. The internal electronics draw only 250 mA, which simplifies power allocation inside compact control panels. The aluminum housing resists corrosion in industrial environments, while the stainless steel shaft provides a durable mechanical interface. The glass disc also maintains dimensional stability as operating conditions change over time.