The Model HS20 is a compact hollow shaft encoder designed to economically fill the resolution range up to 10,000 cycles per turn. This compact unit features a precision disc, precision ball bearings and EMI shielding. The encoder meets IP65 sealing requirements when ordered with the shaft seal.
Applications: Machine control; process control and automation; agricultural machinery; robotics; food processing; metering operations.
Sensata offers HS20 Series variations with intrinsic safety, non-incendive and non-sparking ratings for use in certain hazardous locations. Consult factory for details.
Contact us to request pricing, availability and customization options
Contact UsShaft Bore | 0.625”, 0.500”, 0.375” |
Allowable Misalignment | 0.005: T.I.R. on mating shaft 0.75” from shaft end |
Bore Runout | 0.001 T.I.R. |
Starting Torque at 25°C | 1.0 in-oz max. without shaft seal; 2.5 in-oz max with shaft seal |
Bearings | High precision ball bearings, Material: Chrome steel |
Shaft Material | Stainless Steel |
Bearing Housing | Die cast aluminum with protective finish |
Cover Die | Die cast aluminum with protective finish |
Bearing Life | 2x108 revs at rated load, 1 x 1010 revs at 10% rated load |
Maximum RPM | 10,000 RPM (see frequency response, below) |
Moment of Inertia | .625 thru shaft: 3.68 X 10-4 oz-in-sec2 [26.04 X g*cm2 ] .375 blind shaft: 5.32 X 10-4 oz-in sec2 [37.60 X g*cm2[ |
Weight | 8 oz. typical |
Code | Incremental |
Output Format | 2 outputs in quadrature, A leads B CCW, 1/2 cycle index , Z, gated with negative B Consult factory for other output formats. |
Cycles per Shaft Turn | 1 to 10,000 |
Supply Voltage | 5–28 VDC ± 5% |
Current Requirements | 100mA typical + output load, 250mA (max) |
Voltage/Output | 28/V: Multi-Voltage Line Drive, 5–28 VDC in, Vout = Vin 28/5: TTL, RS422 Line Driver, 5–28 VDC in, Vout = 5 VDC 28/O: NPN Line Driver Open Collector, 5–28 VDC in, NPN out (30V MAX) 5, 12, 15 or 24/OR: R=100 ohm / V: 5V=470 ohm, 15V=1.5K ext |
Protection Level | Reverse, overvoltage and line driver output protection diodes |
Frequency Response | 300kHz |
Output Terminations | see Table 1, following pages |
Enclosure Rating | IP65 when ordered with shaft seal and cable gland on cover. IP50 when ordered with no shaft seal. |
Temperature | Operating temperature -40° C up to 85° C standard. Check factory for higher temperature options. Storage temperature -40° C to 100° C |
Shock | 100 g’s for 5 msec duration |
Vibration | 50 to 2000 Hz @ 30grms |
Humidity | 98% RH without consideration |