Product Description:

The HS35R2000D372 is an incremental hollow-shaft encoder manufactured by Danaher as part of the Dynapar Encoders series. It serves as a rotational feedback device in automated machinery, converting shaft movement into digital pulse trains that motor drives, PLCs, and counters use for position and velocity control. The unit mounts directly on a motor or gearbox shaft, eliminating coupling backlash and maintaining precise registration. This mounting arrangement supports repeatable angular measurement in conveyor, printing, and packaging systems without requiring additional mechanical linkages during continuous-duty operation.

The encoder outputs quadrature signals at a resolution of 2000 PPR, giving controllers a clear edge count for fine incremental positioning. The internal optics and driver circuitry sustain a minimum frequency response of 100 kHz, allowing full-resolution tracking even at high shaft speeds. Signal edges transition in less than 1 µs with a 1000 pF load, which minimizes timing jitter in high-speed counting applications. The device draws no more than 100 mA from a 5 to 26 V supply, helping limit power consumption. For dusty or washdown areas, the housing carries a NEMA 4 / IP66 designation that seals the optics against splashing fluids and airborne contaminants.

The shaft can run at up to 3600 rpm without compromising pulse integrity, and the codewheel withstands impacts of 50 G for 11 ms during handling or installation. The design supports overhung loads of up to 30 lb axially and 40 lb radially on the clamping hub. Startup drag is limited to 5.0 oz-in, while running torque remains below 4.5 oz-in to reduce losses in the drive system. The encoder weighs no more than 16 oz, so it adds minimal inertia to the rotating assembly. Its low weight also permits installation on smaller motors without placing excessive mass on the shaft or mounting hardware.