Oriental Motor

ORIENTAL MOTOR U.S.A. Corp.
570 Alaska Avenue
Torrance, CA 90503
1-800-GO-VEXTA (468-3982)

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Ideal for bi-directional operation, KII Series Reversible motors offer higher strength gears that maximize motor performance and extend the rated life, with ease of use wiring and mounting, all at affordable prices.
  • 25 W (1/30 HP)
  • 3.15 in. (80 mm) Frame Size
  • Rated Torque
    • Round Shaft = 21 oz-in (150 mN·m)
    • Parallel Shaft Gear = 6 ~ 141 lb-in (0.68 ~ 16 N·m)
  • Lead Wire or Terminal Box Type
  • Electromagnetic Brake available
AC Motor
Unit of Measure
Items AC Motor
4RK25UA-5A
25 W (1/30 HP) Single-Phase 110/115 VAC AC Gear Motor (5:1 Gear Ratio)
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 AC Motor
4RK25UA-6A
25 W (1/30 HP) Single-Phase 110/115 VAC AC Gear Motor (6:1 Gear Ratio)
Web Price Request Quote
 AC Motor
4RK25UA-7.5A
25 W (1/30 HP) Single-Phase 110/115 VAC AC Gear Motor (7.5:1 Gear Ratio)
Web Price Request Quote
 AC Motor
4RK25UA-9A
25 W (1/30 HP) Single-Phase 110/115 VAC AC Gear Motor (9:1 Gear Ratio)
Web Price Request Quote
 AC Motor
4RK25UA-12.5A
25 W (1/30 HP) Single-Phase 110/115 VAC AC Gear Motor (12.5:1 Gear Ratio)
Web Price Request Quote
Frame Size - 3.15 in
Output Power - 25 W (1/30 HP)
Voltage (VAC) - Single-Phase 110/115 VAC
Frequency (Hz) - 60
Current - 0.54 A [110 VAC] 0.55 A [115 VAC]
Type - Lead Wire
Electromagnetic Brake - Not Equipped
Shaft/Gear Type - Parallel Shaft Gearhead
Gear Ratio (X:1) - 5 :1 - 6 :1 - 7.5 :1 - 9 :1 - 12.5 :1
Output Shaft Diameter - 5/8 in.
Rated Torque - 6.0 lb-in   - 7.1 lb-in   - 8.8 lb-in   - 10.6 lb-in   - 15.0 lb-in  
Rated Speed (rpm) - 360 - 300 - 240 - 200 - 144
Permissible Load Inertia - 120 oz-in²When performing instantaneous stop = 42 oz-in² - 175 oz-in²When performing instantaneous stop = 61 oz-in² - 270 oz-in²When performing instantaneous stop = 95 oz-in² - 390 oz-in²When performing instantaneous stop = 137 oz-in² - 820 oz-in²When performing instantaneous stop = 260 oz-in²
Permissible Overhung Load - 0.39 in. from Output Shaft End = 67 lb0.79 in. from Output Shaft End = 78 lb
Permissible Thrust Load - 22 lb
Permissible Thrust Load -
RoHS Compliant - These products do not contain substances that exceed the regulation values in the RoHS Directive.
Safety Standards - UL CE