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PK	PK-P	PK-M	PK-SG	PK-PL	PK-T	PV
Standard Type	High Torque	High Resolution	SH Geared	PL Geared	Terminal Box	High Inertia
Offers balanced performance enhanced by high torque, low vibration and low noise. Lead wire options: 4, 6, 8 Encoder option Learn More	Combines 1.5 time more torque than a standard type allowing for downsizing or high torque operation, even in the high speed range. Connector type options: 4, 6 Optional cable Encoder option Learn More	Half the step angle (0.9) of standard stepping motors (1.8), further reducing vibration and noise with increased accuracy from the smaller basic step angle.  Lead wire options: 4, 6 Encoder option Learn More	Basic spur gearhead, effective for inertia reduction, increasing torque, higher resolution and suppressing vibration. Six gear ratios are available. Lead wire options: 4, 6 Encoder option Learn More	Planetary gearhead with center output shaft, designed for high torque requirements, inertia reduction, higher resolution, suppressing vibration with low backlash. Three gear ratios are available. Lead wire options: 4, 6 Encoder option Learn More	4 or 8 terminals available for Bipolar (series) or (parallel) or Unipolar winding configuration with protective earth terminal for grounding, conforms to the IP65 standard for ingress protection and dust and water. Lead wire options: 4, 8 Learn More	Utilizes a larger rotor diameter and larger magnets to significantly increase out put torque also allowing for improved motor to load inertia ratios. Lead wire options: 4, 6 Learn More

Standard Type

The standard PK Series 2-phase stepping motor offers balanced performance enhanced by high torque, low vibration and low noise. Optimal motor size and winding specification can be selected from a wide range of motor variations.

Encoder Option Available

The PK Series 2-phase stepping motor with encoder offers high torque and precise feedback capability.

• Encoder Feedback Type: Incremental
• Two feedback resolutions: 200 and 400 pulses/rev.
• 2-channel or 3-channel
• Provides closed loop system capability

High Torque Type

This motor combines high torque and a compact size. Three frame sizes, 1.10 in. (28mm), 1.38 in. (35mm) and 1.65 in. (42mm), are available. Each specification provides torque equivalent to a motor of the next larger frame size, supporting high-torque operation even in the high-speed range. For example, high torque type PK246PB [motor frame size 1.65 in. (42mm)] has the same holding torque as the standard type PK266-01B [motor frame size 2.22 in. (56.4mm)]. This means a smaller size motor will maintain the same torque. This allows for downsized and lightweight equipment.

High Resolution Type

These 2-phase, high resolution stepping motors have half the step angle of standard stepping motors. The high resolution type increases motor resolution from 200 steps/revolution to 400 steps/revolution. Smaller step angles can be achieved by half-step driving or microstep driving. Other than having twice as many rotor teeth as standard stepping motors, all other structures are exactly the same as standard stepping motors.

SH Geared Type

Incorporating SH gears with high permissible torque, these models offer the full benefit of the speed reducing capability of geared motors, delivering high resolution, high torque and smooth low-speed rotation. With performance like this, the SH Geared type can easily satisfy the requirements of various kinds of low-speed positioning applications.

Smooth Rotation at Low Speeds
Stepping motors at low speed produce a relatively high amount of vibration. Use of a gearhead allows for an increase in the speed of the motor which results in a smoother motion while maintaining the low output speed required by the application.

Six Gear Ratios
SH geared motors are available with six different gear ratios: 3.6:1, 7.2:1, 9:1, 10:1, 18:1, and 36:1. The low ratios of these gearheads can greatly facilitate speed control of the 2-phase stepping motors.

Ideal for High Inertia Drive
The stepping motor itself can drive an inertia of 10 times the rotor inertia. The geared type can reduce the load inertia by the square of the gear ratio. Therefore, the geared type is suitable for driving larger inertial loads.

Terminal Box Type

The terminal box type motor conforms to the IP65 standard of ingress protection against water and dust.

PL Geared Type

The PL gear mechanism is comprised primarily of a sun gear, planetary gears and an internal tooth gear. The sun gear is installed on the central axis surrounded by planetary gears enclosed in an internal tooth gear centered on the central axis. The PL gear offers high permissible torque and low backlash [35 arc minutes (0.58°)]. Gear ratios of 5:1, 10:1and 36:1 are available.

The PL gear mechanism is comprised primarily of a sun gear, planetary gears and an internal tooth gear. The sun gear is installed on the central axis surrounded by planetary gears enclosed in an internal tooth gear centered on the central axis.

PV Series
High Inertia Capability

The PV Series provides, on average, 1.5 times higher torque than a standard stepping motor. By utilizing a larger rotor diameter, larger magnets can be used to significantly increase the output torque.

RoHS Compliant

RoHS (Restriction of Hazardous Substances) Directive:
Directive on restriction of the use of certain hazardous substances in electrical and electronic equipment (2002/95/EC).
The RoHS Directive prohibits the use of six chemical substances in electrical and electronic products sold in the EU member states. The six controlled substances are: lead, hexavalent chromium, cadmium, mercury and two specific brominated flame-retardants (PBB and PBDE).

Product Lineup

Type	Frame Size (in. sq.)	without Encoder	with Encoder	Connection Type	Lead Wires	Max. Holding Torque (lb-in)
Standard	1.65			Bipolar (Series), Unipolar	6	1.37 ~ 3.81
	1.97			Bipolar (Series), Unipolar	6	5.31 ~ 13.7
	2.22			Bipolar	4	3.43 ~ 15
				Bipolar (Series), Unipolar	6
				Bipolar (Series & Parallel), Unipolar	8
	3.35			Bipolar	4	19.3 ~ 82.5
			-	Bipolar (Series), Unipolar	6
			-	Bipolar (Series & Parallel), Unipolar	8
High-Torque	1.10			Bipolar	4	0.443 ~ 0.975
				Bipolar (Series), Unipolar	6
	1.38			Bipolar	4	1.37 ~ 3.25
				Bipolar (Series), Unipolar	6
	1.65			Bipolar	4	3.43 ~ 8.25
				Bipolar (Series), Unipolar	6
	2.22			Bipolar (Series), Unipolar	6	4.5 ~ 20
High-Resolution	1.65			Bipolar (Series), Unipolar	6	1.37 ~ 3.31
	2.22			Bipolar (Series), Unipolar	6	3.43 ~ 15
SH Geared	1.10			Bipolar (Series), Unipolar	6	2.6 ~ 3.5
	1.65			Bipolar (Series), Unipolar	6	1.77 ~ 7
	2.36			Bipolar (Series), Unipolar	6	8.8 ~ 35
	3.54		-	Bipolar (Series), Unipolar	6	22 ~ 106
PL Geared	1.65			Bipolar	4	13.2 ~ 26
	2.36			Bipolar	4	30 ~ 70
Terminal Box	2.22		-	Bipolar	4	4.25 ~ 15
	3.35		-	Bipolar	4	19.3 ~ 82.5
				Bipolar (Series & Parallel), Unipolar	8
High Inertia	2.36		-	Bipolar	4	6.62 ~ 27.5
				Bipolar (Series), Unipolar	6

View Products = View all PK/PV Series 2-Phase Stepping Motors