Koyo TRDA-2E series light-duty encoders are cost-effective for many industrial applications with light loads on the encoder shaft and/or flexible shaft couplings. These incremental encoders with open-collector (sinking) quadrature output (4 transitions per pulse) have 1/4 inch solid shafts, and are available with up to 2500 pulses per revolution (PPR).
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Would you buy this item again? Yes
We have used this and other encoders of TRD series(maybe 30-40) most are the 24 volts bought at different times since 2005. I think we have only have had 2 fail. One during a lighting strike which took out around 15 other pieces of electronic here, and the other broke the cable where it go into the encoder. We were using it as the not to rotate piece. It still made around three years. We don't run many at high RPM however most are used for positioning on ball screws or tied straight to stepper motor.