NEMA 14 Motors | McMaster-Carr

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19 Products

Stepper Motors

Motors


Square Body	Round Body

These stepper motors are good for precise, repetitive movements, such as those made by the head of a 3D printer. Similar to the hands of a clock, their shaft turns in small, equal increments. When the shaft stops, it holds its position even when a counteracting force is applied to the load. You can control the position of the load without having to configure encoders or sensors. All are bipolar hybrid stepper motors, so the current can flow in both directions. This helps them deliver higher torque, precision, and efficiency than unipolar stepper motors.

All motors require a controller and drive (not included).

Maximum Holding Torque—Holding torque is the force needed to move the shaft out of position when it is stationary. When the shaft is in motion, torque generally decreases as speed increases. Use a torque-speed curve to confirm which motor will work for your application. Click on a part number and select “Product Detail” to view the curve for a motor.

Full Step Increment—Full step increment is the rotation of the shaft from one position to the next. A smaller full step increment means the rotor has more teeth, producing smoother and more precise motion. 1.8° is considered standard.

							Overall			Shaft					Temp. Range, ° F
	Max. Holding Torque, in·ozf	Max. Rotation Speed, rpm	Max. Current per Phase, amp	Full Step Increment	Stepper Motor Polarity	No. of Wire Leads	Lg.	Wd.	Ht.	Dia., mm	Lg., mm	Ctr.-to-Base Lg.	Type	No. of Shafts	Min.	Max.		Each
Square Body







				NEMA 14 Frame Size

				7.5	3,300	0.45	1.8°	Bipolar	4	1.6"	1.4"	1.4"	5	13.5	0.7"	Solid	1	0	120	6627T39	000000


				20	1,800	0.8	1.8°	Bipolar	4	1.9"	1.4"	1.4"	5	13.5	0.7"	Solid	1	0	120	6627T38	000000
				56.6	3,000	2	1.8°	Bipolar	4	3.1"	1.4"	1.4"	5	22	0.7"	D-Profile	1	0	120	6627T141	000000


				Round Body







								NEMA 14 Frame Size

								15.5	825	0.6	0.9°	Bipolar	4	1.6"	1.4"	1.4"	5	18.2	0.7"	D-Profile	1	0	120	6627T211	00000


								15.5	1,475	1.2	0.9°	Bipolar	4	1.6"	1.4"	1.4"	5	18.2	0.7"	D-Profile	1	0	120	6627T221	00000

Stepper Motors with Linear Actuation

Instead of a shaft, these stepper motors have a lead screw that converts rotational motion to linear motion. Moving in increments smaller than the thickness of a sheet of paper, they're ideal for applications that require fine motion control, such as positioning electrical components on a circuit board. They move in equal steps and hold their position when stationary, so they do not require encoders, sensors, or other position feedback devices. The lead screw is built into the motor, so there are fewer points of failure than systems that use a shaft coupling to connect the lead screw. All are bipolar hybrid stepper motors, which deliver greater torque, precision, and efficiency than other types of stepper motors.

All motors require a controller and drive (not included).

External Lead Screw—External lead screw stepper motors work similar to a traditional linear motion system; attach the load to the flanged nut, which travels back and forth along the lead screw.

Pass-Through Lead Screw—Pass-through lead screw stepper motors give you the most design versatility because there are two ways to move your load: on the motor body or on the ends of the lead screw. The motor moves when the lead screw is fixed or the lead screw moves when the motor body is fixed.

Travel Distance per Full Step—Travel distance per full step determines the control you have over the motor’s positioning. The smaller the measurement, the finer positioning control you have, but the more steps it will take to go the same distance.

Dynamic Load Capacity—Dynamic load capacity is the maximum load a motor can move. If you increase the speed, the dynamic load capacity decreases. Click on a part number and select "Product Detail" to view the load-speed chart and confirm the motor will work for your application.

									Overall					Temp. Range, ° F
	Travel Distance per Full Step	Travel Lg.	Dynamic Load Cap., lb.	Max. Speed, in/sec	Max. Current per Phase, amp	Full Step Increment	Stepper Motor Polarity	No. of Wire Leads	Lg.	Wd.	Ht.	Lead Screw Lg.	Thread Size	Min.	Max.		Each
External Lead Screw







				NEMA 14 Frame Size

				0.00024"	5.2"	50	0.3	1.2	1.8°	Bipolar	4	7.4"	1.4"	1.4"	6"	7/32"-48	35	130	8677N46	0000000


				0.00024"	11.2"	50	0.3	1.2	1.8°	Bipolar	4	13.4"	1.4"	1.4"	12"	7/32"-48	35	130	8677N47	000000
				0.00125"	3.2"	28	2	2	1.8°	Bipolar	4	5.7"	1.4"	1.4"	4"	1/4"-16	35	130	8677N48	000000
				0.00125"	5.2"	16	1.7	1.2	1.8°	Bipolar	4	7.4"	1.4"	1.4"	6"	1/4"-16	35	130	8677N49	000000
				0.00125"	7.2"	28	2	2	1.8°	Bipolar	4	9.7"	1.4"	1.4"	8"	1/4"-16	35	130	8677N51	000000
				0.00125"	11.2"	16	1.7	1.2	1.8°	Bipolar	4	13.4"	1.4"	1.4"	12"	1/4"-16	35	130	8677N52	000000


				Pass-Through Lead Screw







								NEMA 14 Frame Size

								0.00024"	4.5"	50	0.3	1.2	1.8°	Bipolar	4	6.3"	1.4"	1.4"	6"	7/32"-48	35	130	8677N75	000000


								0.00024"	10.5"	50	0.3	1.2	1.8°	Bipolar	4	12.3"	1.4"	1.4"	12"	7/32"-48	35	130	8677N76	000000
								0.00125"	4.5"	16	1.7	1.2	1.8°	Bipolar	4	6.3"	1.4"	1.4"	6"	1/4"-16	35	130	8677N77	000000
								0.00125"	10.5"	16	1.7	1.2	1.8°	Bipolar	4	12.3"	1.4"	1.4"	12"	1/4"-16	35	130	8677N78	000000

Positioning Slides for Stepper Motors

Add your own stepper motor and controller to precisely move the ball screw and carriage smoothly at high speeds, like a head on an inkjet printer. With a repeatability of -0.01 to 0.01 mm—thinner than a strand of hair—the carriage hits the same spot every time. These positioning slides work well for automated assemblies and other applications that require fine, repeatable motion control.

The carriage rides along the inside of the rail, making these slides more compact than traditional carriages and guide rails. Made of steel with a U-shaped rail, these slides resist twisting forces that could affect their positioning. This also means they can be installed with only one end supported or with both ends overhanging. The same load rating applies no matter how the slides are oriented.

Travel Distance per Turn—Travel distance per turn, also known as screw lead, is how far the carriage moves with one rotation of the ball screw.

		Dynamic Load Cap., lb.						For Max. Motor		Overall, mm			Carriage
	Stroke Lg., mm	Horiz.	Vert.	Max. Speed, mm/s	Travel Distance per Turn, mm	Repeatability, mm	For Shaft Dia., mm	Speed, rpm	Torque, in·ozf	Lg.	Wd.	Ht.	Lg., mm	Wd., mm	Bearing Type	Base Material		Each
For NEMA 14 Motor Frames



		30	148	148	100	1	-0.01 to 0.01	5	6,000	29.3	166	40	42	46	23	Ball	Steel	6734K211	0000000


		80	148	148	100	1	-0.01 to 0.01	5	6,000	29.3	216	40	42	46	23	Ball	Steel	6734K212	00000000
		110	528	528	200	2	-0.01 to 0.01	5	6,000	88.1	276	50	36	47.4	31	Ball	Steel	6734K214	00000000
		130	148	148	100	1	-0.01 to 0.01	5	6,000	29.3	266	40	42	46	23	Ball	Steel	6734K213	00000000