0.79 in. (20 mm) NEMA 8 PK Series 5-Phase Stepper Motors

The high-torque PK/PKP series stepper motor offers balanced performance enhanced by high torque, low vibration and low noise.

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Gear Type

Taper Hobbed, Low Backlash (up to 45 arc min), Offset Shaft
Planetary, Low Backlash (up to 35 arc min), Centered Shaft
Planetary, Non Backlash (3 arc min), Centered Shaft
Harmonic, Non Backlash (0 arc min), Centered Shaft
No Gearhead

Shaft

Single
Double

Item #	Frame Size	Basic Step Angle	Speed-Torque Characteristics	Holding Torque	Current per Phase	Shaft/Gear Type	Gear Ratio (X:1)	Encoder Output	Shaft	Add To Cart / Contact Sales

PK546PA-R27L	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 59 oz-in0.42 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 500 P/R Differential, 3-Channel	- Single	Add To Cart Request Quote
PK543NAW-R17	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 18.4 oz-in0.13 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 500 P/R TTL 2-Channel	- Single	Add To Cart Request Quote
PK543NAW-R18	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 18.4 oz-in0.13 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 1000 P/R TTL 2-Channel	- Single	Add To Cart Request Quote
PK543NAW-R27	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 18.4 oz-in0.13 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 500 P/R TTL 3-Channel	- Single	Add To Cart Request Quote
PK543NAW-R28	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 18.4 oz-in0.13 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 1000 P/R TTL 3-Channel	- Single	Add To Cart Request Quote
PK544NAW-R17	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 25 oz-in0.18 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 500 P/R TTL 2-Channel	- Single	Add To Cart Request Quote
PK544NAW-R18	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 25 oz-in0.18 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 1000 P/R TTL 2-Channel	- Single	Add To Cart Request Quote
PK544NAW-R27	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 25 oz-in0.18 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 500 P/R TTL 3-Channel	- Single	Add To Cart Request Quote
PK544NAW-R28	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 25 oz-in0.18 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 1000 P/R TTL 3-Channel	- Single	Add To Cart Request Quote
PK544PA-R17	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 34 oz-in0.24 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 500 P/R TTL 2-Channel	- Single	Add To Cart Request Quote
PK544PA-R18	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 34 oz-in0.24 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 1000 P/R TTL 2-Channel	- Single	Add To Cart Request Quote
PK544PA-R27	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 34 oz-in0.24 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 500 P/R TTL 3-Channel	- Single	Add To Cart Request Quote
PK544PA-R28	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 34 oz-in0.24 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- 1000 P/R TTL 3-Channel	- Single	Add To Cart Request Quote
PK543AW	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 18.4 oz-in0.13 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- None	- Single	Add To Cart Request Quote
PK543BW	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 18.4 oz-in0.13 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- None	- Double	Add To Cart Request Quote
PK544AW	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 25 oz-in0.18 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- None	- Single	Add To Cart Request Quote
PK544BW	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 25 oz-in0.18 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- None	- Double	Add To Cart Request Quote
PK545AW	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 34 oz-in0.24 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- None	- Single	Add To Cart Request Quote
PK545BW	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 34 oz-in0.24 N·m	- 0.75 A/phase	- Round Shaft (No Gearhead)	-	- None	- Double	Add To Cart Request Quote
PK543AW-PS25	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 350 oz-in2.5 N·m	- 0.75 A/phase	- Planetary Gear	- 25 :1	- None	- Single	Add To Cart Request Quote
PK543AW-PS36	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 420 oz-in3 N·m	- 0.75 A/phase	- Planetary Gear	- 36 :1	- None	- Single	Add To Cart Request Quote
PK543AW-PS50	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 420 oz-in3 N·m	- 0.75 A/phase	- Planetary Gear	- 50 :1	- None	- Single	Add To Cart Request Quote
PK543BW-PS25	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 350 oz-in2.5 N·m	- 0.75 A/phase	- Planetary Gear	- 25 :1	- None	- Double	Add To Cart Request Quote
PK543BW-PS36	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 420 oz-in3 N·m	- 0.75 A/phase	- Planetary Gear	- 36 :1	- None	- Double	Add To Cart Request Quote
PK543BW-PS50	- 1.65 in42 mm	- 0.72º	Speed-Torque Characteristics	- 420 oz-in3 N·m	- 0.75 A/phase	- Planetary Gear	- 50 :1	- None	- Double	Add To Cart Request Quote