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Hybrid Nema17 3d Printer Closed Loop Stepper With Permanent Magnets

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Hybrid Nema17 3d Printer Closed Loop Stepper With Permanent Magnets

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Brand Name :	Jkongmotor
Model Number :	JK42HS48-1684BED-02
Certification :	CE, ROHS,ISO9001
Price :	US $20.00 - US $35.00
Payment Terms :	T/T , paypal , Western Union, L/C
Supply Ability :	50000pcs/month
Delivery Time :	For samples , 7-25 days / For batch , 15-40days

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Hybrid Nema17 3d Printer Closed Loop Stepper With Permanent Magnets

Hybrid Nema17 Easy closed loop stepper motor system with encoder 7.3kg.cm Black Color

Stepper motors consist of a rotor with permanent magnets and a stationary stator that carries the windings. When current runs through the stator windings, it generates a magnetic flux distribution that interacts with the magnetic field distribution of the rotor to apply a turning force. Stepper motors feature very high pole counts, typically 50 or more. The stepper motor driver energizes each pole in sequence so that the rotor turns in a
series of increments, or steps. Because of the very high pole count, the motion appears to be continuous.

Genaral Specification:

Item	Specifications
Step Angle	1.8°
Temperature Rise	80℃max
Ambient Temperature	-20℃~+50℃
Insulation Resistance	100 MΩ Min. ,500VDC
Dielectric Strength	500VAC for 1minute
Shaft Radial Play	0.02Max. (450g-load)
Shaft Axial Play	0.08Max. (450g-load)
Max. radial force	28N (20mm from the flange)
Max. axial force	10N

Electrical Specification:

Model No.	Step Angle	Motor Length	Current /Phase	Resistance /Phase	Inductance /Phase	Holding Torque	# of Leads	Detent Torque	Rotor Inertia	Mass
	( °)	(L)mm	A	Ω	mH	kg.cm	No.	g.cm	g.cm	Kg
JK42HS25-0404	1.8	25	0.4	24	36	1.8	4	75	20	0.15
JK42HS28-0504	1.8	28	0.5	20	21	1.5	4	85	24	0.22
JK42HS34-1334	1.8	34	1.33	2.1	2.5	2.2	4	120	34	0.22
JK42HS34-0406	1.8	34	0.4	24	15	1.6	6	120	34	0.22
JK42HS34-0956	1.8	34	0.95	4.2	2.5	1.6	6	120	34	0.22
JK42HS40-0406	1.8	40	0.4	30	30	2.6	6	150	54	0.28
JK42HS40-1704	1.8	40	1.7	1.5	2.3	4.2	4	150	54	0.28
JK42HS40-1684	1.8	40	1.68	1.65	3.2	3.6	4	150	54	0.28
JK42HS40-1206	1.8	40	1.2	3	2.7	2.9	6	150	54	0.28
JK42HS48-0406	1.8	48	0.4	30	25	3.1	6	260	68	0.35
JK42HS48-1684	1.8	48	1.68	1.65	2.8	4.4	4	260	68	0.35
JK42HS48-1206	1.8	48	1.2	3.3	2.8	3.17	6	260	68	0.35
JK42HS60-0406	1.8	60	0.4	30	39	6.5	6	280	102	0.5
JK42HS60-1704	1.8	60	1.7	3	6.2	7.3	4	280	102	0.5
JK42HS60-1206	1.8	60	1.2	6	7	5.6	6	280	102	0.5

Note: We can also manufacture products according to customer's requirements.

Dimensions:(unit=mm)

Hybrid Nema17 3d Printer Closed Loop Stepper With Permanent Magnets

Servo Motors

Like stepper motors, servo motors have many implementations. Let’s consider the most common design, which incorporates a rotor with permanent magnets and a stationary stator with the windings. Here too, the current creates a magnetic field distribution that acts on the rotor to develop torque. Servo motors have significantly lower pole counts than stepper motors, however. As a result, they must be run closed-loop.

In general, servo motors are more sophisticated than stepper motors. They run significantly faster than stepper motors, with speeds on the order of several thousand RPMs. This enables servo motors to be used with gearboxes to deliver much higher torque at useful speeds. They also deliver more consistent torque across the speed range of the motor. Unlike stepper motors, they do not have holding torque per se.

Closed-loop operation enables the controller/drive to command that the load remain at a specific position, however, and the motor will make continual adjustments to hold it there. Thus, servo motors can deliver de facto holding torque. Note, however, the zero-speed torque scenario depends upon the motor being sized properly to control the load and prevent oscillation about the commanded location.

With closed-loop feedback, servo motors deliver high accuracy positioning coupled with better speed and acceleration than stepper motors. The trade-off is increased cost, size, and complexity.

Servo motors typically use rare-earth magnets while stepper motors more frequently use less expensive conventional magnets. Rare-earth magnets enable the development of higher torque in a smaller package. Servo motors also gain a torque advantage from their overall physical size. Servo motor diameters typically range from NEMA 17 all the way up to 220 mm. As a result of these combined factors, servo motors can deliver torques of up to 250 foot-pounds.

The combination of speed and torque enables servo motors to deliver better acceleration than stepper motors. They also deliver improved positioning accuracy as a result of closed-loop operation.

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