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Hysteresis Synchronous Motor Family
Series PC-DA Geared Reversible Hysteresis
Hysteresis Synchronous PC-DA Geared Specifications:
Output Speed: 1 to 600 RPM
Torque Range: Up to 100 oz-in [706 mN-m]
Insulation Class: Class A (105°C)
Lead Wire: 4 leads 22AWG (approx. 9 inches [228.6 mm])
Operation Ambient Temp: -10°C to +40°C (approx.)
Shaft Bearing: Sleeve Bearing
Recognition: E37163, Component Time Indicating and Recording Appliances,
115Vac 60 Hz Standard Rotor
Certification: Card No. 42576, Motors and Generators,
115 Vac, 60 Hz, Standard Rotor, 3 watts max.
Capacitor is required for operation.  Capacitor supplied with 115 Vac motors.
Note:  Typical data subject to change without notification
Additional Information:
HURST® offers two series of the DA Hysteresis Synchronous Geared motor with an integral clutch; one of them being the PC-DA (see AR-DA for other style).  The clutch on both series is controlled by an actuator which can be specified for operation from either an AC or DC supply.  Motors can also be built to order for operation at any AC voltage. 

The gearing in PC-DA motors is designed for heavy duty application with loads up to 100 oz-in [706 mN-m].  Geared trains are fabricated from brass gears and steel pinions with hardened wheel shafts running in bronze bearings packed with grease for lifetime lubrication.  In addition to the stock motors listed here, a large number of speeds are available as built-to-order items.

PC-DA
The series PC-DA utilizes a positive clutch which operates on the input to the gear train as shown in the figure below.  The motor runs continuously and the positive clutch provides fast starting and braking action.  The output shaft will start within 20 milliseconds and stop within 0.2 degrees at 1 RPM.  The clutch has been life tested for over 2 million operations without failure.

Notes:
  • A capacitor is required for operation and is supplied with 115V motors.
  • Models listed below are designated for 115, 60 Hz operation of both motor and actuator.
  • PC-DA Geared Drawings:
    PC-DA Geared Diagrams:
    PC-DA Geared Model Table:
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    to
    Cart
    Model Part
    Number
    Rated
    Torque
    (oz-in)
    Rated
    Torque
    (mN-m)
    Rated
    Torque
    (In-Lbs)
    Reduction Output
    Speed
    (RPM)
    60Hz
    Input
    Power
    (watts)
    Voltage
    (Vac)
    60Hz
    Capacitor
    Value
    (mfd)
    Max
    Breaking
    Angle
    (deg)
    Angle
    "A"
    (deg)
    Weight
    (oz)
    Weight
    (grams)
    PC-DA 990482 1 7 .06 30 120 5 115 .5 24 214.5 22.01 624
    PC-DA 9904971 100 706.2 6.25 3600 1 5 115 .5 .2 45 22.01 624
    PC-DA 990513 5.9 42 .37 180 20 5 115 .5 4 100 22.01 624
    PC-DA 990525 12 85 .75 360 10 5 115 .5 2 100 22.01 624
    PC-DA 990531 20 141 1.25 600 6 5 115 .5 1.2 100 22.01 624
    PC-DA 990535 30 212 1.88 900 4 5 115 .5 .8 40 22.01 624
    PC-DA 990543 60 424 3.75 1800 2 5 115 .5 .4 40 22.01 624




























    Notes:
    1 Maximum Gear Train Loading.