HS35R20488577 Danaher
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The Danaher HS35R20488577 is part of the Dynapar Encoders series and has a resolution of 2048 PPR with a frequency response of at least 100 kHz. This encoder supports a maximum shaft speed of 3600 RPM, handles axial and radial shaft loads up to 30 and 40 lb respectively, and carries an enclosure rating of NEMA4/IP66. It features 50 G shock resistance, 20 G vibration resistance, and weighs a maximum of 16 ounces.
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Product Description:
The HS35R20488577 is an incremental encoder produced by Danaher within the Dynapar Encoders series. In automated machinery, it attaches to a rotating shaft and converts mechanical motion into electrical pulses that a drive or PLC counts for speed and position feedback. By supplying real-time rotation data, the device helps coordinate motors, conveyors, and indexing tables so that motion remains synchronized with process commands.
The encoder provides a resolution of 2048 PPR, giving the control system 2,048 pulses for every full shaft revolution and enabling fine velocity adjustments at low speeds. Signal lines support a bandwidth of at least 100 kHz, so pulse trains remain square and distinct even when rotational speed changes rapidly. The sensing assembly can turn safely at speeds up to 3600 rpm; operation beyond that rate exceeds the mechanical limits of the internal disk and bearings. When power is first applied, the encoder shaft overcomes starting torque limited to 5.0 oz-in, after which the torque decreases further to reduce the load on the drive system. All components sit in a sealed housing rated at NEMA 4 and IP66, protecting the interior against dust and high-pressure washdown water commonly encountered on industrial lines.
The bearing design supports a radial shaft load of 40 lb and an axial shaft load of 30 lb, allowing direct coupling to keyed or clamped shafts without supplemental supports. The optical assembly tolerates shock events up to 50 G and vibration levels up to 20 G, making the encoder suitable for mounting on gear reducers or reciprocating equipment. Quadrature outputs remain separated by 90° ±22.5°, and channel A leads channel B during clockwise rotation, so the phase relationship remains predictable for closed-loop drives. Running torque is limited to 4.5 oz-in, minimizing resistance imposed on the connected shaft during operation. The fully assembled unit weighs no more than 16 oz, which reduces the load placed on lightly supported shafts and compact mounting structures.
