HR5261000BB09 Danaher
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The Danaher HR5261000BB09 is part of the Dynapar Encoders series and features an incremental, optical signal type with a resolution of 1024 PPR. It has an input voltage range of 5 to 26 VDC, a frequency response of at least 100 kHz, and a maximum shaft speed of 10,000 RPM. This encoder uses a mylar disc and an aluminum housing, with a shaft diameter of 3/8 in and operates between 0 and 85 degrees Celsius.
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Product Description:
The HR5261000BB09 is an incremental optical rotary encoder manufactured by Danaher within the Dynapar Encoders series. In industrial automation, it translates mechanical rotation into digital pulse streams that allow motion controllers to verify speed, direction, and position. When coupled to a motor or conveyor shaft, the unit provides real-time feedback for closed-loop velocity regulation and axis synchronization in packaging, printing, or material-handling equipment. Its optical sensing system generates repeatable electrical signals without requiring physical contact between the sensor and the rotating codewheel.
The encoder accepts a supply range of 5 to 26 VDC, allowing it to share a 5-volt logic rail or operate from 24-volt control power without additional regulators. It uses an incremental optical signal, and its differential Format C output includes an index channel for homing routines. The electronics respond at frequencies up to 100 kHz, so the pulse train remains accurate at shaft speeds up to 10,000 rpm. With a native resolution of 1024 PPR, each revolution generates 1,024 quadrature cycles that compatible drives can interpolate for finer position counts. The rotor has an inertia of only 3.0 × 10-4 oz-in-s², minimizing the additional mechanical load placed on small-frame motors. This low inertia helps the connected shaft accelerate and decelerate without substantial resistance from the encoder assembly.
The encoder uses a 2.50-inch servo mounting pattern with a three-hole flange, and the bolt circle measures 1.88 in. A 3/8-inch solid shaft connects through flexible or rigid hubs, while shaft runout is limited to 0.001 in TIR to preserve optical alignment with the Mylar codewheel. The housing is machined from aluminum to provide low weight and effective heat transfer. An open-collector driver rated for extended-temperature operation provides sinking outputs compatible with PLC inputs equipped with pull-up resistors. Full performance is maintained across an ambient temperature range of 0 to +85 °C. Proper engagement of the mounting screws and accurate shaft alignment help prevent mechanical stress from affecting the optical assembly during high-speed operation.
