29SM-K(71○ 1.8°)

Stepping motors rotate at fixed angles with digitally controlled electronic pulses and they are able to start, stop and position with good control characteristics. Hybrid-type stepping motors consist of a rotor with permanent magnets and magnetic bodies, and by using ball bearings they can perform highly precise and reliable motions. Stepping motors can be used in wide range of applications, such as copy machines, multifunction printers, medical equipment, semiconductor manufacturing equipment, factory automation equipment, robots and other industrial equipment.

Click the arrow icon in the table below to switch from ascending to descending order.

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Model	Outer Diameter [mm]	Step Angle [°]	Drive Sequence	Rated Current [A]	Resistance [Ω]	Holding Torque [mN・m]	Inductance [mH]	Rotor Inertia [g・cm2]	Detent Torque [mN・m]	Mass [g]
29SM-K050U	71.0	1.800	UNI-POLAR	2.00	1.85	1236	3.70	390.00	37.00	900
29SM-K149U	71.0	1.800	UNI-POLAR	2.00	2.13	1569	4.70	515.00	49.00	1180
29SM-K250U	71.0	1.800	UNI-POLAR	1.60	2.00	672	3.30	220.00	22.00	660
29SM-K379U	71.0	1.800	UNI-POLAR	1.90	1.75	1000	3.10	330.00	32.00	820
29SM-K550U	71.0	1.800	UNI-POLAR	1.50	2.10	500	3.10	165.00	12.00	570
29SM-K649U	71.0	1.800	UNI-POLAR	2.00	1.50	843	2.40	260.00	25.00	720
29SM-K711U	71.0	1.800	UNI-POLAR	3.00	1.00	1961	2.20	660.00	59.00	1390
29SM-K050B	71.0	1.800	BI-POLAR	2.80	0.97	1569	3.70	390.00	37.00	900
29SM-K149B	71.0	1.800	BI-POLAR	2.80	1.12	2079	4.70	515.00	49.00	1180
29SM-K250B	71.0	1.800	BI-POLAR	2.30	1.00	902	3.30	220.00	22.00	660
29SM-K379B	71.0	1.800	BI-POLAR	2.70	0.90	1373	3.10	330.00	32.00	820
29SM-K550B	71.0	1.800	BI-POLAR	2.10	1.10	667	3.10	165.00	12.00	570
29SM-K649B	71.0	1.800	BI-POLAR	2.80	0.75	1108	2.40	260.00	25.00	720
29SM-K711B	71.0	1.800	BI-POLAR	2.20	2.00	2550	8.50	660.00	59.00	1390

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Model	size "L" [mm]	size "L" [Inch]
29SM-K5**	39.5	1.55
29SM-K2**	43.5	1.71
29SM-K6**	46.5	1.83
29SM-K3**	51.5	2.03
29SM-K0**	55.5	2.18
29SM-K1**	67.5	2.66
29SM-K7**	77.5	3.05

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PHASE

A

A COM

A/

B

B COM

B/

PIN NO. 3 1 2 8 7 5
Associated Data
- PDF product catalog
CAD
- 3D/2D CAD

PHASE	A	A COM	A/	B	B COM	B/
PIN NO.	3	1	2	8	7	5

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