Product Description:

The HS35R2000H3E265 is a hollow-shaft incremental encoder manufactured by Danaher as part of the Dynapar Encoders series. It installs directly over a driven shaft and outputs square-wave signals that a drive, PLC, or counter uses for velocity and position feedback in industrial automation. By translating mechanical rotation into electrical pulses, the device helps maintain synchronous motor speed, coordinate multi-axis motion, and detect overspeed or standstill conditions in packaging, conveying, and process machinery.

The housing is sealed to NEMA 4/IP66, so the internal optics remain protected from airborne dust and high-pressure washdown. Its code disk provides a resolution of 2000 PPR, allowing controllers to calculate shaft movement down to fractions of a degree. The electro-optical channel supports a minimum frequency response of 100 kHz, which permits accurate counting even when the shaft accelerates rapidly. Line drivers draw up to 100 mA from the supply, a figure that assists when sizing power budgets for multiple encoders on one rail. Running friction stays below 4.5 oz-in, minimizing the load added to servo or vector-controlled motors. Digital transitions rise or fall in less than 1 µs, reducing timing uncertainty at high count rates.

During startup, the encoder may briefly require up to 5.0 oz-in of torque until the bearings stabilize. Proper installation keeps axial play within ±0.050 in and radial runout below ±0.025 in, preventing disk wobble that could corrupt pulse symmetry. The mechanical system can impose as much as 40 lb of radial load or 30 lb of axial load without affecting accuracy, and shaft speed is limited to 3600 rpm to remain within bearing and thermal limits. Overall mass is held to 16 oz, so the encoder can be supported by lightweight mounting brackets.