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RK Series Microstepping Stepper Motors
Legacy / Discontinued Products
The RK series incorporates new functions and state-of-the-art technologies to achieve the ultimate performance of a stepper motor. The RK Series offers both the high resolution and smooth motion of a microstepping system with improved response characteristics found in a high performance stepping motor solution. The RK series "Smooth Drive" function achieves low vibration without the need for a higher cost pulse generator.
- Lowest vibration motor performance
- Smooth Drive function
- Geared options
- IP65 motors available
- Resolution - 0.72º ~ 0.0.00288º [16 steps] (Microstep)
- Single-phase 100-115 or 200-230 VAC or Three-phase 200-230 VAC
- RoHS Compliant
Item # |
Frame Size |
Speed-Torque Characteristics |
Holding Torque |
Shaft/Gear Type |
Gear Ratio (X:1) |
Shaft |
Power Supply |
Basic Step Angle |
Encoder Output |
Web Price |
Current per Phase (A/phase) |
Lead Time (Legacy) |
Add To Cart / Contact Sales |
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RK564ACER27PS25 | Frame Size - 2.36 in60 mm |
Speed-Torque Characteristics
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Holding Torque - 1130 oz-in8 N·m | Shaft/Gear Type - Planetary Gear | Gear Ratio (X:1) - 25 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.0001152º ~ 0.0288º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK564ACER27PS36 | Frame Size - 2.36 in60 mm |
Speed-Torque Characteristics
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Holding Torque - 1130 oz-in8 N·m | Shaft/Gear Type - Planetary Gear | Gear Ratio (X:1) - 36 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.00008º ~ 0.02º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK564ACER27PS50 | Frame Size - 2.36 in60 mm |
Speed-Torque Characteristics
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Holding Torque - 1130 oz-in8 N·m | Shaft/Gear Type - Planetary Gear | Gear Ratio (X:1) - 50 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.0000576º ~ 0.0144º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK566ACER27PS10 | Frame Size - 2.36 in60 mm |
Speed-Torque Characteristics
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Holding Torque - 710 oz-in5 N·m | Shaft/Gear Type - Planetary Gear | Gear Ratio (X:1) - 10 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.000288º ~ 0.072º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK566ACER27PS5 | Frame Size - 2.36 in60 mm |
Speed-Torque Characteristics
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Holding Torque - 490 oz-in3.5 N·m | Shaft/Gear Type - Planetary Gear | Gear Ratio (X:1) - 5 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.000576º ~ 0.144º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK566ACER27PS7 | Frame Size - 2.36 in60 mm |
Speed-Torque Characteristics
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Holding Torque - 560 oz-in4 N·m | Shaft/Gear Type - Planetary Gear | Gear Ratio (X:1) - 7.2 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.0004º ~ 0.1º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK564ACER27H100 | Frame Size - 2.36 in60 mm |
Speed-Torque Characteristics
![]() Speed - Torque Characteristics |
Holding Torque - 1120 oz-in8 N·m | Shaft/Gear Type - Harmonic Gear | Gear Ratio (X:1) - 100 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.0000288º ~ 0.0072º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK564ACER27H50 | Frame Size - 2.36 in60 mm |
Speed-Torque Characteristics
![]() Speed - Torque Characteristics |
Holding Torque - 768 oz-in5.5 N·m | Shaft/Gear Type - Harmonic Gear | Gear Ratio (X:1) - 50 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.0000576º ~ 0.0144º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK5913ACE-R27 | Frame Size - 3.35 in85 mm |
Speed-Torque Characteristics
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Holding Torque - 890 oz-in6.3 N·m | Shaft/Gear Type - Round Shaft (No Gearhead) | Gear Ratio (X:1) - | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.00288º ~ 0.72º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK596ACE-R27 | Frame Size - 3.35 in85 mm |
Speed-Torque Characteristics
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Holding Torque - 290 oz-in2.1 N·m | Shaft/Gear Type - Round Shaft (No Gearhead) | Gear Ratio (X:1) - | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.00288º ~ 0.72º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK599ACE-R27 | Frame Size - 3.35 in85 mm |
Speed-Torque Characteristics
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Holding Torque - 580 oz-in4.1 N·m | Shaft/Gear Type - Round Shaft (No Gearhead) | Gear Ratio (X:1) - | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.00288º ~ 0.72º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK596ACER27T10 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
![]() Speed - Torque Characteristics |
Holding Torque - 1264 oz-in9 N·m | Shaft/Gear Type - Taper Hobbed Gear | Gear Ratio (X:1) - 10 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.000288º ~ 0.072º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK596ACER27T20 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
![]() Speed - Torque Characteristics |
Holding Torque - 1696 oz-in12 N·m | Shaft/Gear Type - Taper Hobbed Gear | Gear Ratio (X:1) - 20 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.000144º ~ 0.036º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK596ACER27T3.6 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
![]() Speed - Torque Characteristics |
Holding Torque - 624 oz-in4.5 N·m | Shaft/Gear Type - Taper Hobbed Gear | Gear Ratio (X:1) - 3.6 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.0008º ~ 0.2º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK596ACER27T30 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
![]() Speed - Torque Characteristics |
Holding Torque - 1696 oz-in12 N·m | Shaft/Gear Type - Taper Hobbed Gear | Gear Ratio (X:1) - 30 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.000096º ~ 0.024º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK596ACER27T7.2 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
![]() Speed - Torque Characteristics |
Holding Torque - 1264 oz-in9 N·m | Shaft/Gear Type - Taper Hobbed Gear | Gear Ratio (X:1) - 7.2 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.0004º ~ 0.1º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK596ACER27PS25 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
![]() Graph |
Holding Torque - 5200 oz-in37 N·m | Shaft/Gear Type - Planetary Gear | Gear Ratio (X:1) - 25 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.0001152º ~ 0.0288º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK596ACER27PS36 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
![]() Graph |
Holding Torque - 5200 oz-in37 N·m | Shaft/Gear Type - Planetary Gear | Gear Ratio (X:1) - 36 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.00008º ~ 0.02º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK596ACER27PS50 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
![]() Graph |
Holding Torque - 5200 oz-in37 N·m | Shaft/Gear Type - Planetary Gear | Gear Ratio (X:1) - 50 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.0000576º ~ 0.0144º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK599ACER27PS10 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
![]() Graph |
Holding Torque - 2800 oz-in20 N·m | Shaft/Gear Type - Planetary Gear | Gear Ratio (X:1) - 10 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.000288º ~ 0.072º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK599ACER27PS5 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
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Holding Torque - 1980 oz-in14 N·m | Shaft/Gear Type - Planetary Gear | Gear Ratio (X:1) - 5 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.000576º ~ 0.144º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK599ACER27PS7 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
![]() Graph |
Holding Torque - 2800 oz-in20 N·m | Shaft/Gear Type - Planetary Gear | Gear Ratio (X:1) - 7.2 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.0004º ~ 0.1º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK596ACER27H100 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
![]() Speed - Torque Characteristics |
Holding Torque - 5120 oz-in37 N·m | Shaft/Gear Type - Harmonic Gear | Gear Ratio (X:1) - 100 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.0000288º ~ 0.0072º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK596ACER27H50 | Frame Size - 3.54 in90 mm |
Speed-Torque Characteristics
![]() Speed - Torque Characteristics |
Holding Torque - 3520 oz-in25 N·m | Shaft/Gear Type - Harmonic Gear | Gear Ratio (X:1) - 50 :1 | Shaft - Single | Power Supply - Single-Phase 200-230 VAC | Basic Step Angle - Microstep- 0.0000576º ~ 0.0144º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |
RK564AAE-R27 | Frame Size - 2.36 in60 mm |
Speed-Torque Characteristics
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Holding Torque - 59 oz-in0.42 N·m | Shaft/Gear Type - Round Shaft (No Gearhead) | Gear Ratio (X:1) - | Shaft - Single | Power Supply - Single-Phase 100-115 VAC | Basic Step Angle - Microstep- 0.00288º ~ 0.72º | Encoder Output - 500 P/R TTL 3-Channel | Request Quote | Current per Phase (A/phase) - | Lead Time (Legacy) - | Request Quote |