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Low Vibration and Noise Achieved by Microstepping

The basic step angle of the motor can be divided into a maximum of 250 microstep angles without using any mechanical element such as a reduction gear. As a result, vibration and noise are further reduced.

 

Smooth Drive Function for Enhanced Ease of Use

The Smooth Drive Function automatically controls operations via microstep drive at the same travel distance and speed used in the full-step mode, without requiring the operator to change the pulse input settings. This function is particularly useful when the CRK Series is used in full-step or half-step mode.

Built-in Controller Package Also Available

The CRK Series with built in controller is a compact, space saving stepper motor and driver package with a powerful, feature-rich controller built-in. The driver supports stand alone or RS-485 communications with multi-drop capability for network operation and I/O control.

 

Compact, Lightweight Microstep Driver

The Pulse Input type board-level driver is compact and lightweight [0.09 lb. (40 g)].

Built-in Controller (Stored Data) Package Also Available

The CRK Series with built in controller is a compact, space saving stepper motor and driver package with a powerful, feature-rich controller built-in. The driver supports Factory Automation (FA) network control via I/O control, Modbus (RTU) control, or a network converter.

Wide Variety of Motors

This series offers models ranging from the high-torque type and standard type, as well as various geared types.
You can find a product meeting your specific torque, resolution or other needs from a wide range of specifications.

0.36° High-Torque, High-Resolution Motor

The basic step angle of the high-resolution type is 0.36°/step, which is half the basic step angle of the standard type.

The positioning accuracy of stepper motors is affected by frictional load. The CRK's high-resolution type, having a smaller basic step angle and capable of generating approximately 1.5 times the torque of the standard type, ensures quick torque rise, thereby minimizing the effect of frictional load.

Stop Position Accuracy of 2 Arc Minutes (No load)

The 0.36° High-Torque Type motors is designed with a stop position accuracy of 2 arc minutes (0.034°) [standard type: 3 arc minutes (0.05°)]. The reduced error helps improve the positioning accuracy of your equipment.

0.36° / 0.72° High-Torque Motor

The high-torque type adopt a newly designed high-torque motor that widens the range of applications.
- The smaller motor allows for compact equipment design.
- The motor current is reduced to suppress heat generation.

Geared Type Motors

Taper Hobbed Gear (TH)

A geared motor achieving both low backlash and low cost.

• Backlash: 10 ~ 60 arc minute
• Gear ratios: 3.6:2, 7.2:1, 10:1, 20:1, 30:1

Planetary Gear (PS)

A geared motor achieving superior performance with high permissible torque / maximum torque, high resolution, low backlash with center shaft.

• Backlash: 15 ~ 35 arc minute
• Gear ratios: 5:1, 7.2:1, 10:1, 25:1, 36:1 and 50:1

Planetary Gear (PN)

A high-accuracy geared motor achieving a backlash of 3 arc minutes or less. It also provides high strength and wide gear ratios.

• Backlash: 2 ~ 3 arc minute
• Gear ratios: 5:1, 7.2:1, 10:1, 25:1, 36:1, 50:1

Harmonic Gear (HG)

A high-accuracy, backlash-free geared motor adopting a newly developed harmonic gear. It ensures high strength in a compact body.

• Backlash: 0 arc minute
• Gear Ratios: 50:1, 100:1

Encoder Models Available

500 or 1000 pulse/rev.

2/ 3-channel TTL type

Motor rotations can be detected by taking in encoder output signals into a programmable controller (not supplied).

Product Lineup

Type		Features	Motor Frame Size
			no Encoder	Encoder	Basic Step Angle	Max. Holding Torque
0.36° High-Torque		A high-torque motor offering higher positioning accuracy with the basic step angle of 0.36°/step, or half the basic step angle of the standard type.	1.10 in. (28 mm)	-	0.36°	5.9 ~ 12.7 oz-in (0.042 ~ 0.09 N·m)
			1.65 in. (42 mm)	1.65 in. (42 mm)		34 ~ 59 oz-in (0.24 ~ 0.42 N·m)
			2.36 in. (60 mm)	2.36 in. (60 mm)		110 ~ 320 oz-in (0.78 ~ 2.3 N·m)
0.72° High-Torque		A high torque motor generating high torque of approx. 1.3 to 1.5 times the level achieved by the standard type.	0.79 in (20 mm)	-	0.72°	3.2 oz-in (0.0231 N·m)
			1.10 in. (28 mm)	-		6.8 ~ 11 oz-in (0.048 ~ 0.078 N·m)
			1.65 in. (42 mm)	1.65 in. (42 mm)		34 ~ 59 oz-in (0.24 ~ 0.42 N·m)
0.72° Standard		The basic model in the CRK Series offering an optimal balance of torque, low vibration and low noise.	1.65 in. (42 mm)	1.65 in. (42 mm)	0.72°	18.4 ~ 34 oz-in (0.13 ~ 0.24 N·m)
			2.36 in. (60 mm)	2.36 in. (60 mm)		59 ~ 230 oz-in (0.42 ~ 1.66 N·m)
	TH Geared (Taper Hobbed)	A geared motor achieving both low backlash and low cost. • Backlash: 10 ~ 60 arc minute • Gear ratios:  3.6:2, 7.2:1, 10:1, 20:1, 30:1	1.10 in. (28 mm)	-	0.024° - 0.1°	28 ~ 71 oz-in (0.2 ~ 0.5 N·m)
			1.65 in. (42 mm)	1.65 in. (42 mm)	0.024° - 0.2°	3 ~ 13.2 lb-in (0.35 ~ 1.5 N·m)
			2.36 in. (60 mm)	2.36 in. (60 mm)		11 ~ 35 lb-in (1.25 ~ 4 N·m)
	PS Geared (Planetary Gear)	A geared motor achieving superior performance with high permissible torque / maximum torque, high resolution, low backlash with center shaft. • Backlash: 15 ~ 35 arc minute • Gear ratios: 5:1, 7.2:1, 10:1, 25:1, 36:1 and 50:1	1.10 in. (28 mm)	-	0.072° - 0.144°	28 ~ 56 oz-in (0.2 ~ 0.4 N·m)
			1.65 in. (42 mm)	1.65 in. (42 mm)	0.0144° - 0.144°	8.8 ~ 26 lb-in (1.0 ~ 3  N·m)
			2.36 in. (60 mm)	2.36 in. (60 mm)		30 ~ 70 lb-in (3.5 ~ 8 N·m)
	PN Geared (Planetary Gear)	A high-accuracy geared motor achieving a backlash of 3 arc minutes or less. It also provides high strength and wide gear ratios. • Backlash: 2 ~ 3 arc minute • Gear ratios: 5:1, 7.2:1, 10:1, 25:1, 36:1, 50:1	1.10 in. (28 mm)	-	0.072° - 0.144°	28 ~ 56 oz-in (0.2 ~ 0.4 N·m)
			1.65 in. (42 mm)	-		7 ~ 13.2 lb-in (0.8 ~ 1.5 N·m)
			2.36 in. (60 mm)	-	0.0144° - 0.144°	30 ~ 70 lb-in (3.5 ~ 8 N·m)
	HG Geared (Harmonic Gear)	A high-accuracy, backlash-free geared motor adopting a newly developed harmonic gear. It ensures high strength in a compact body. • Backlash: 0 arc minute • Gear Ratios: 50:1, 100:1	0.79 in. (20 mm)	-	0.0072° - 0.0144°	3.5 ~ 5.3 lb-in (0.4 ~ 0.6 N·m)
			1.18 in. (30 mm)	-		15.9 ~ 21 lb-in (1.8 ~ 2.4 N·m)
			1.65 in. (42 mm)	1.65 in. (42 mm)		30 ~ 44 lb-in (3.5 ~ 5 N·m)
			2.36 in. (60 mm)	2.36 in. (60 mm)		48 ~ 70 lb-in (5.5 ~ 8 N·m)

View Products = View all available part numbers for CRK Series Stepper Motor and Driver Systems

*Motor and encoder cables included with the package, driver lead wire set sold separately.

Build a complete system online by selecting your base motor and driver and adding all necessary accessories and/or controller.

Driver Lead Wire Set

Lead wires with a connector are available as an accessory for DC input drivers. These lead wires allow for easy connection of the motor, power supply and input/output signals without crimping. The connection cable set includes three connection cables (for motor, power supply and input/output signals).

Clean Dampers

Mechanical dampers suppress stepper motor vibration and improve high-speed performance. An inertia body and silicon gel are hermetically sealed in a plastic case.

(For use with Double Shaft motors)

 

Connection Cables

These cables extend the distance between the motor and driver. The motor includes a 2 ft. (600 mm) cable. Use a flexible motor cable if the motor is installed on a moving part or its cable will be flexed.

Connection Cables for Connector Type Motors
(included in package)

This lead wire connection cable with a conveniently crimped connector is for connector-coupled motor, and for connecting motors and drivers. [A connection cable of 2 ft. (0.6 m) is included with the motor with connector and driver packages.]

Controllers

Controllers are devices that output pulse signals needed to operate a stepper motor. Controllers let you make various settings to control your motor and also permit connection with a host programmable controller and sensors or PC. Select a controller that best suits your system.

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