RK Series Microstepping Stepper Motors

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

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Frame Size	- 1.65 in42 mm
Speed-Torque Characteristics	- Graph	- Graph	- Graph	- Graph	- Graph
Holding Torque	- 18.4 oz-in0.13 N·m	- 18.4 oz-in0.13 N·m	- 48 oz-in0.35 N·m	- 98 oz-in0.7 N·m	- 141 oz-in1 N·m
Type	- Standard	- Standard	- Geared	- Geared	- Geared
Shaft/Gear Type	- Round Shaft (No Gearhead)	- Round Shaft (No Gearhead)	- Taper Hobbed Gear	- Taper Hobbed Gear	- Taper Hobbed Gear
Gear Ratio (X:1)	-	-	- 3.6 :1	- 7.2 :1	- 10 :1
Backlash	-	-	- 2 arc min (0.034º)	- 10 arc min (0.17º)	- 10 arc min (0.17º)
Shaft	- Single	- Double	- Single	- Single	- Single
Power Supply	- Single-Phase 100-115 VAC
Current	- 0.75 A
Basic Step Angle	- Microstep- 0.00288º ~ 0.72º	- Microstep- 0.00288º ~ 0.72º	- Microstep- 0.0008º ~ 0.2º	- Microstep- 0.0004º ~ 0.1º	- Microstep- 0.000288º ~ 0.072º
Permissible Speed Range (r/min)	-	-	- 0 ~ 500	- 0 ~ 250	- 0 ~ 180
Rotor Inertia	- 0.191 oz-in²35x10^-7 kg·m²
Lost Motion	-
Encoder Output	-
Safety Standards	- UL CSA (driver only) EN CE
Permissible Overhung Load	- 0 in. from Shaft End = 4.5 lb0.2 in. from Shaft End = 5.6 lb0.39 in. from Shaft End = 7.6 lb0.59 in. from Shaft End = 11.7 lb0 mm from Shaft End = 20 N5 mm from Shaft End = 25 N10 mm from Shaft End = 34 N15 mm from Shaft End = 52 N	- 0 in. from Shaft End = 4.5 lb0.2 in. from Shaft End = 5.6 lb0.39 in. from Shaft End = 7.6 lb0.59 in. from Shaft End = 11.7 lb0 mm from Shaft End = 20 N5 mm from Shaft End = 25 N10 mm from Shaft End = 34 N15 mm from Shaft End = 52 N	- 0 in. from Shaft End = 2.2 lb0.2 in. from Shaft End = 3.1 lb0.39 in. from Shaft End = 4.5 lb0.59 in. from Shaft End = 6.7 lb0 mm from Shaft End = 10 N5 mm from Shaft End = 14 N10 mm from Shaft End = 20 N15 mm from Shaft End = 30 N	- 0 in. from Shaft End = 2.2 lb0.2 in. from Shaft End = 3.1 lb0.39 in. from Shaft End = 4.5 lb0.59 in. from Shaft End = 6.7 lb0 mm from Shaft End = 10 N5 mm from Shaft End = 14 N10 mm from Shaft End = 20 N15 mm from Shaft End = 30 N	- 0 in. from Shaft End = 2.2 lb0.2 in. from Shaft End = 3.1 lb0.39 in. from Shaft End = 4.5 lb0.59 in. from Shaft End = 6.7 lb0 mm from Shaft End = 10 N5 mm from Shaft End = 14 N10 mm from Shaft End = 20 N15 mm from Shaft End = 30 N
Permissible Thrust Load	-	-	- 3.3 lb15 N	- 3.3 lb15 N	- 3.3 lb15 N
Permissible Thrust Load	- The permissible thrust load shall be no greater than the motor mass.	- The permissible thrust load shall be no greater than the motor mass.	-	-	-
Current per Phase (A/phase)	-
Motor Connection Type	-
Connection Type	-
Lead Wires	-
Lead Time (Legacy)	-

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