HS35R307271CC Danaher
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The Danaher HS35R307271CC is part of the Dynapar Encoders series and offers a maximum shaft speed of 3600 RPM with a frequency response of 100 kHz. The encoder supports axial and radial shaft loads of 30 and 40 pounds respectively and features an enclosure rated NEMA 4 / IP66. It has a running torque of 4.5 oz-in, a starting torque of 5.0 oz-in, and weighs 16 ounces.
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Product Description:
The HS35R307271CC is a hollow-shaft rotary encoder manufactured by Danaher within the Dynapar Encoders series. It mounts on process motors, conveyor drives, or printing rollers and produces two offset square-wave channels plus an optional index channel. By translating shaft rotation into digital pulses, the unit supplies accurate speed and position feedback to programmable logic controllers and variable-frequency drives used throughout automated machinery. Its through-bore design simplifies installation on existing shafts without requiring extra couplings, making it suitable for retrofits and new equipment.
The encoder supports a maximum mechanical velocity of 3600 rpm, and the sensing electronics track that motion with a bandwidth of up to 100 kHz, allowing reliable pulse generation on high-speed spindles. Quadrature outputs are maintained at 90° ±22.5° of electrical separation, while the channel duty cycle remains within a 180° ±18° window to provide clean symmetry for counting circuits. The enclosure meets the NEMA 4 / IP66 rating, preventing dust ingress and protecting the encoder against powerful water jets during washdown. Running friction is limited to 4.5 oz-in, and the starting torque is 5.0 oz-in, minimizing drive loading at startup. Acceptable shaft movement includes ±0.050 inches of axial end play and ±0.025 inches of total indicated runout without signal degradation.
The mechanical interface accepts a 3/8-inch or 1/2-inch shaft with a bore tolerance of +0.0003/+0.0005 inches. The encoder tolerates an axial shaft load of 30 lb and a radial shaft load of 40 lb, supporting direct mounting on belt-driven equipment. Shock resistance is rated at 50 G, and continuous vibration endurance reaches 20 G, accommodating the demands of material-handling and mobile platforms. Overall running torque remains low because of precision ABEC bearings, while the total mass of 16 ounces reduces cantilever stress on small motors. Signal phasing remains stable throughout the specified operating conditions.
