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Home / Product / Geared Stepper Motor / Planetary Gear Stepper Motor / 28JXS40K/28STH Precise Angular Displacement Planetary Gear Stepping Motor
28JXS40K/28STH Precise Angular Displacement Planetary Gear Stepping Motor

28JXS40K/28STH Precise Angular Displacement Planetary Gear Stepping Motor

The 28JXS40K/28STH is a hybrid motor with a metal inner ring that can be used in a variety of environments.
The stepper motor itself has a high positioning accuracy and can convert the electrical pulse signal into an accurate angular displacement. With the high precision transmission of the planetary reducer, its positioning accuracy can be further improved. Generally speaking, the step Angle accuracy of the planetary deceleration stepper motor can be controlled within ±3%, and the repeated positioning accuracy can reach ±0.01°. The inertia reduction effect of the reducer is the square of the reduction ratio, which can effectively reduce the interference of the load on the dynamic response of the stepper motor and improve the stability of the system start-stop and commutation.

  • 28JXS40K/28STH Precise Angular Displacement Planetary Gear Stepping Motor
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28JXS40K/28STH

28mm Planetary Gearbox

Permissible Load Range: 1.2N.m~4.0N.m

Planetary Gear Stepping Motor (Ring Gear Material: Metal)

Dimensions

Planetary Gearbox

Ring material

Metal

Bearing at output

Ball bearings

Max. Radial load （10mm from flange）

35N

Max. shaft axial load

25N

Radial play of shaft （near to flange）

0.07mm

Axial play of shaft

≤0.3 mm

Backlash at no-load

1.5°

Technical Data

28STH Hybrid Stepping Motor Specifications

Model No.

Rated Voltage

Current/Phase

Resistance/Phase

Inductance/Phase

Holding Torgue

# of Leads

Rotor Inertia

Weight

Length L1

Max. Gear Ratio

Single Shaft

V

A

Ω

mH

g.cm

g-m²

g

mm

28STH45-0956A

3.4

0.95

3.4

1.2

750

6

12

44.5

44.5

≤1:189

28STH51-0956A

4.4

0.95

4.6

1.8

900

6

18

50.5

50.5

≤1:189

A Single Shaft, B Double shaft

28JXS40K Planetary Gearbox Specifications

Reduction ratio

3.71

5.18

14

19

27

51

71

100

139

189

264

369

Number of gear trains

1

2

3

4

Length(L2) mm

31

40.1

49

57.9

Max. rated torque kg. cm

12

20

32

40

Short time permissible torque kg.cm

36

60

96

120

Efficiency %

0.9

0.81

0.73

0.66

Weight g

60

85

95

110

Frequency-torque Characteristics

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About
Zhejiang Dongzheng Motor Co.,Ltd.

Dongzheng Motor was established in 2003, 28JXS40K/28STH Precise Angular Displacement Planetary Gear Stepping Motor Suppliers in China. The company has more than 100 independent intellectual property rights, including 9 valid invention patents and 75 valid utility model patents and others. The factory has more than 140 employees and covers an area of more than 7000 square meters, construction area of 15000 square meters. As 28JXS40K/28STH Precise Angular Displacement Planetary Gear Stepping Motor Company, our well-equipped testing laboratory conducts comprehensive quality testing from materials to finished products to ensure product quality. We have supporting automation equipment that can ensure the improvement of production capacity and the control of process accuracy.

At present, our products are mainly DC gear motors, planetary gear motors, worm gear motors and micro reducers, etc. And widely used in service robots, medical equipment, financial apparatus, intelligent office equipment, solar tracker systems, rehabilitation and health equipment, automatic doors, etc. Our products are exported to the United States, Europe, Israel, Korea, Japan, Taiwan and other countries and regions.

Certificate Of Honor
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  • UKCA
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  • CCC
  • RoHS
  • ISO 9001
  • ISO 14001
  • ISO 45001
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