Mini geared 28HSP 1200g.cm NEMA11 planetary gearbox stepper motor

Stepper motors are known for their accurate positioning capabilities and high torque delivery at low speeds, but they require careful sizing to ensure the motor matches the load and application parameters, to minimize the possibility of lost steps or motor stalling. Adding a gearbox to a stepper motor system can improve the motor’s performance by decreasing the load-to-motor inertia ratio, increasing torque to the load, and reducing motor oscillations.

 
1.Genaral Specification of stepper motors:

• Step Angle(degrees): 1.8 Degree
• Phase: 2
• Type: Hybrid
• Model Number: NEMA11
• Model: JK28HS51-0674PG5.18
• Holding Torque: 1200g.cm
• Current / Phase: 0.67A
• Motor length: 51mm
• Diameter of axle: 6mm
• Temperature rise: below 80 ℃
• Ambient temperature: -20 ℃ ~ + 50 ℃
• Insulation resistance: minimum 100MΩ, 500VDC
• Dielectric strength: 500VAC for 1 minute
• Shaft radial clearance: 0.02 max (450 g load)
• Shaft axial clearance: 0.08Max. (450 g load)
• Maximum radial force: 28N (20mm from flange)
• Maximum axial force: 10N
• size: Approximately 28x28x51mm

 
2.Electrical Specification of Nema11 stepper moror

Model No.	Step Angle	Motor Length	Current /Phase	Resistance /Phase	Inductance /Phase	Holding Torque	# of Leads	Rotor Inertia	Motor Weight
	( °)	(L)mm	A	Ω	mH	g.cm	No.	g.cm	Kg
JK28HS32-0674PG5.18	1.8	32	0.67	5.6	3.4	600	4	9	0.11
JK28HS45-0674PG51	1.8	45	0.67	6.8	4.9	950	4	12	0.14
JK28HS51-0674PG71	1.8	51	0.67	9.2	7.2	1200	4	18	0.2

3.Drawing of JK28HS51 step motor with encoder:

 
4.Produce equipment:
 

 
5.Production Process:

6.Advantages of hybrid Stepper Motor

The motor is simple in construction, reliable.
At the standstill condition, the motor has full torque.
The motors are less costly.
They require little maintenance.
The stepper motor has an excellent and accurate starting, stopping and reversing response.