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  • Stepper Motor
The RKII Series Stepper Motors are designed to provide high performance and energy savings. To achieve constant maximum torque output with lower heat generation and save energy, the motor losses have been substantially reduced allowing them to be operated for longer hours at high speed which is not possible with conventional stepper motors. For use with RKII Series AC Input Drivers.
  • 3.35 in. (85 mm)/3.54 in. (90 mm) Frame Sizes
  • 5-Phase, New Pentagon (0.72º)
  • Single or Double Shaft
  • Geared Types Available
  • Encoder Types Available
  • Electromagnetic Brake Types Available
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Shaft/Gear Type

  • Round Shaft with Flat (No Gearhead)
  • Spur Gear (Offset Shaft)
  • Planetary Gear
  • Harmonic Gear

Gear Ratio (X:1) (:1)

  • 3.6
  • 5
  • 7.2
  • 10
  • 20
  • 25
  • 30
  • 36
  • 50
  • 100

Encoder

  • Not Equipped
  • Equipped

Shaft

  • Single
  • Double

Electromagnetic Brake

  • Equipped
  • Not Equipped

Current

  • 0.75 A

Item #

Frame Size

Motor Length

Speed-Torque Characteristics

Holding Torque

Shaft/Gear Type

Gear Ratio (X:1)

Encoder

Shaft

Electromagnetic Brake

Current

Basic Step Angle

Web Price

- 3.35 in85 mm - 2.68 in.68 mm
 
 		- 290 oz-in2.1 N·m - Round Shaft with Flat (No Gearhead) - - Not Equipped - Single - Not Equipped - 0.75 A - 0.72º $169.00
- 3.35 in85 mm - 3.86 in.98 mm
 
 		- 580 oz-in4.1 N·m - Round Shaft with Flat (No Gearhead) - - Not Equipped - Single - Not Equipped - 0.75 A - 0.72º $218.00
- 3.35 in85 mm - 5.04 in.128 mm
 
 		- 890 oz-in6.3 N·m - Round Shaft with Flat (No Gearhead) - - Not Equipped - Single - Not Equipped - 0.75 A - 0.72º $270.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 4640 oz-in33 N·m - Harmonic Gear - 50 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.0144º $1,621.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 7360 oz-in52 N·m - Harmonic Gear - 100 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.0072º $1,621.00
- 3.54 in90 mm - 3.86 in.98 mm
 
 		- 1968 oz-in14 N·m - Planetary Gear - 5 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.144º $755.00
- 3.54 in90 mm - 3.86 in.98 mm
 
 		- 2832 oz-in20 N·m - Planetary Gear - 7.2 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.1º $755.00
- 3.54 in90 mm - 3.86 in.98 mm
 
 		- 2832 oz-in20 N·m - Planetary Gear - 10 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.072º $755.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 4960 oz-in36 N·m - Planetary Gear - 25 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.0288º $873.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 5120 oz-in37 N·m - Planetary Gear - 36 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.02º $873.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 5120 oz-in37 N·m - Planetary Gear - 50 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.0144º $873.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 848 oz-in6 N·m - Spur Gear (Offset Shaft) - 3.6 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.2º $391.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 1408 oz-in10 N·m - Spur Gear (Offset Shaft) - 7.2 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.1º $391.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 1968 oz-in14 N·m - Spur Gear (Offset Shaft) - 10 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.072º $409.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 2832 oz-in20 N·m - Spur Gear (Offset Shaft) - 20 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.036º $409.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 3520 oz-in25 N·m - Spur Gear (Offset Shaft) - 30 :1 - Not Equipped - Single - Not Equipped - 0.75 A - 0.024º $409.00
- 3.35 in85 mm - 2.68 in.68 mm
 
 		- 290 oz-in2.1 N·m - Round Shaft with Flat (No Gearhead) - - Not Equipped - Double - Not Equipped - 0.75 A - 0.72º $174.00
- 3.35 in85 mm - 3.86 in.98 mm
 
 		- 580 oz-in4.1 N·m - Round Shaft with Flat (No Gearhead) - - Not Equipped - Double - Not Equipped - 0.75 A - 0.72º $224.00
- 3.35 in85 mm - 5.04 in.128 mm
 
 		- 890 oz-in6.3 N·m - Round Shaft with Flat (No Gearhead) - - Not Equipped - Double - Not Equipped - 0.75 A - 0.72º $278.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 4640 oz-in33 N·m - Harmonic Gear - 50 :1 - Not Equipped - Double - Not Equipped - 0.75 A - 0.0144º $1,626.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 7360 oz-in52 N·m - Harmonic Gear - 100 :1 - Not Equipped - Double - Not Equipped - 0.75 A - 0.0072º $1,626.00
- 3.54 in90 mm - 3.86 in.98 mm
 
 		- 1968 oz-in14 N·m - Planetary Gear - 5 :1 - Not Equipped - Double - Not Equipped - 0.75 A - 0.144º $761.00
- 3.54 in90 mm - 3.86 in.98 mm
 
 		- 2832 oz-in20 N·m - Planetary Gear - 7.2 :1 - Not Equipped - Double - Not Equipped - 0.75 A - 0.1º $761.00
- 3.54 in90 mm - 3.86 in.98 mm
 
 		- 2832 oz-in20 N·m - Planetary Gear - 10 :1 - Not Equipped - Double - Not Equipped - 0.75 A - 0.072º $761.00
- 3.54 in90 mm - 2.68 in.68 mm
 
 		- 4960 oz-in36 N·m - Planetary Gear - 25 :1 - Not Equipped - Double - Not Equipped - 0.75 A - 0.0288º $879.00
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