HA5250050004129 Danaher
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The Danaher HA5250050004129 is part of the Dynapar Encoders series and has a stainless steel shaft with a maximum speed of 5,000 RPM. It supports axial shaft loads up to 40 pounds and has an enclosure rated NEMA12/IP54. The encoder weighs 1.5 pounds and features an aluminum housing with a glass disc.
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Product Description:
The HA5250050004129 encoder is a shaft-mounted feedback device manufactured by Danaher for the Dynapar Encoders series. This incremental model converts mechanical rotation into two square-wave channels plus an index so that drives and PLCs can monitor angular displacement, velocity, and direction without complex mechanical linkages. By delivering real-time electrical pulses, the unit supports closed-loop control for servomotors, conveyors, and other equipment that requires accurate position or speed data.
The sealed aluminum housing carries an enclosure classification of NEMA 12 / IP54, so airborne dust and splashing fluids are excluded while the internal optics stay aligned with the glass code disc. The encoder tracks shaft rotation at speeds up to 5,000 rpm, and the lightweight rotor has an inertia of only 3.0 × 10^-4 oz-in-sec², minimizing its effect on drive dynamics. Starting friction is equally low at 1.0 oz-in, easing startup torque requirements. Internally, the LED and sensor electronics support an edge rate of at least 100 kHz, allowing high-resolution counts even at elevated shaft speeds. An aluminum housing surrounds the glass disc and stainless-steel shaft to resist vibration and moderate shock. These materials also protect the optical components from ordinary industrial operating conditions while maintaining stable alignment.
The stainless-steel shaft supports axial forces up to 40 lb and radial forces of 35 lb, permitting direct coupling to gearboxes or pulleys without separate bearing blocks. During operation, the emitter and line receiver draw no more than 80 mA from the 5 V supply, which simplifies power budgeting inside the control cabinet. The output channels maintain quadrature spacing of 90° ± 22.5° electrical and overall symmetry of 180° ± 18° electrical, preserving count accuracy for direction-sensitive drives. The encoder weighs 1.5 lb, so it can hang from small-diameter shafts without overloading them or upsetting system balance. Its low weight and rotor inertia reduce the mechanical burden placed on compact motion systems.
