HS351024G0442 Danaher
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The Danaher HS351024G0442 rotary encoder is part of the Dynapar Encoders series and features a resolution of 1024 PPR. It is rated for a maximum shaft speed of 3600 RPM and supports a frequency response of at least 100 kHz. The encoder has a 1 inch bore size and withstands up to 40 pounds of radial shaft load, with NEMA4/IP66 enclosure protection.
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Product Description:
The HS351024G0442 is an incremental rotary encoder produced by Danaher within the Dynapar Encoders series. It slips over a host shaft and emits quadrature A/B pulse trains plus a once-per-revolution index, allowing motion controllers to monitor position, velocity, and direction on automated conveyors, servo axes, or gearing stages. By translating mechanical rotation into digital signals, the encoder becomes the sensing element that completes the feedback loop in industrial automation.
The unit delivers 1024 PPR, giving a basic angular resolution of 0.35° for fine speed regulation and homing routines. A hollow 1 in bore supports direct mounting without extra couplings, while the sealed housing carries a NEMA 4/IP66 rating that blocks dust and high-pressure water during washdowns. The maximum operating speed reaches 3600 rpm, so the encoder handles moderate-speed spindles without signal dropout. Electrical outputs are provided by a balanced 7272 line driver. With a sourcing or sinking capability of 40 mA, the differential channels can drive signals through long cable runs while resisting electrical noise. The index width is 180° ± 18°, quadrature phasing is 90° ± 22.5°, and waveform symmetry is 180° ± 18°, ensuring predictable timing for edge-based counters. Starting torque remains below 5.0 oz-in, and the rotor inertia of 25.6 × 10⁻⁴ oz-in-sec² minimizes drag on light servo systems.
The encoder tolerates an axial shaft load of 30 lb and a radial shaft load of 40 lb, so belt tension or minor misalignment will not harm the bearings. A minimum frequency response of 100 kHz lets the electronics pass high-rate edge transitions when the encoder turns near its speed limit, preserving resolution at elevated speeds. Low moment of inertia and controlled starting torque reduce the mechanical load placed on the host shaft during acceleration. The specified index window supports repeatable reference detection during homing and registration tasks. Consistent quadrature symmetry also simplifies digital filtering in the receiving drive electronics during rapid start-and-stop cycles.
