Stepping Motors - PK Series with Gearhead

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PK Series Stepping Motors

Available Frame Sizes

1.65 in. (42 mm) 2.36 in. (60 mm) 3.54 in. (90 mm)
(Not all Gear Types shown)

Geared Stepping Motors

	Non-backlash		Low Backlash			Basic
Basic Step Angle	0.72°	0.72°	0.72°	1.8°	0.72°	1.8°
Gear Type
Gear Type	Harmonic Gear	Planetary Gear	Planetary Gear	Planetary Gear	Taper Hobbed Gear	Spur Gear
Features	High accuracy positioning High permissible / maximum torque High gear ratios, high resolution	High speed (low gear ratio), high accuracy positioning High permissible / maximum torque	High speed (low gear ratio) High permissible / Maximum torque Low backlash	High permissible torque Low backlash	Wide variety of low gear ratios, high-speed operation	Wide variety of low gear ratios, high-speed operation
Output Shaft	Centered	Centered	Centered	Centered	Offset	Offset
Gear Ratios	50:1 100:1	5:1 7.2:1 10:1 25:1 36:1 50:1	5:1 7.2:1 10:1 25:1 36:1 50:1	5:1 10:1 36:1*	3.6:1 7.2:1 10:1 20:1 30:1	3.6:1 7.2:1 9:1 10:1 18:1 36:1
Available Frame Sizes	0.79 in. (20 mm) 1.18 in. (30 mm) 1.65 in. (42 mm) 2.36 in. (60 mm) 3.54 in. (90 mm)	1.10 in. (28 mm) 1.65 in. (42 mm) 2.36 in. (60 mm) 3.54 in. (90 mm)	1.10 in. (28 mm) 1.65 in. (42 mm) 2.36 in. (60 mm) 3.54 in. (90 mm)	1.10 in. (28mm) 1.65 in. (42 mm) 2.36 in. (60 mm)	1.10 in. (28 mm) 1.65 in. (42 mm) 2.36 in. (60 mm) 3.54 in. (90 mm)	1.10 in. (28 mm) 1.65 in. (42 mm) 2.36 in. (60 mm) 3.54 in. (90 mm)
Available Encoder Options	500 P/R, 3-channel TTL or Line Driver†	-	500 P/R, 3-channel TTL or Line Driver*	200 or 400 P/R, 2 or 3-channel TTL*	500 P/R, 3-channel TTL or Line Driver*	200 or 400 P/R, 2 or 3-channel TTL*
Maximum Torque	320 lb-in (37 N·m)	320 lb-in (37 N·m)	320 lb-in (37 N·m)	70 lb-in (8 N·m)	106 lb-in (12 N·m)	35 lb-in (4 N·m)
Permissible Torque	320 lb-in (37 N·m)	320 lb-in (37 N·m)	320 lb-in (37 N·m)-	-	106 lb-in (12 N·m)	-
Backlash (Reference Value)	0 arc min	3 arc min	35 arc min	35 arc min	60 arc min	Approx. 1° ~ 2°
Minimum Resolution	0.0072°/step	0.0144°/step	0.0144°/step	0.05°/step	0.024°/step	0.05°/step
Maximum Output Shaft Speed	70 r/min	600 r/min	600 r/min	360 r/min	500 r/min	500 r/min
Connection Type	New Pentagon (Bipolar)	New Pentagon (Bipolar)	New Pentagon (Bipolar)	Bipolar	New Pentagon (Bipolar)	Unipolar, Bipolar
Lead Wires	5	5	5	4	5	6