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Home / Products Centre / Ac Servo Motor / S1 AC Servo Motors

S1 Series AC Servo Motors

An AC servo motor operates using a closed-loop control system. In this setup, the motor receives signals from a servo controller, which determines the required motion parameters based on input commands. A feedback device continuously monitors the motor's performance, sending data back to the controller. This allows for instant corrections in speed or position, ensuring high accuracy.

1、Controller sends input signals for speed or position.

2、Drive unit converts these signals into electrical power for the motor.

3、Rotor movement occurs as the stator generates a rotating magnetic field.

4、Feedback system (encoder/resolver) measures performance.

5、Controller adjusts output to match the desired setpoint.

 

Jkongmotor's S1 Series AC Series Motors include 40ST, 60CST, 80ST, 90ST, 100ST, 110ST, 130ST, 150ST, 180ST.

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40ST Series AC Servo Motors

Ac Servo motor, small size, high precision, fast response, quiet operation, high efficieny, long service life, versatility.
Optional: Brakes, Drivers /Controllers...
Motor Model Unit 40ST-M00130 40ST-M00330
Rated power W 50 50 100 100
Rated voltage V 48 220 48 220
Rated current A 1.1 0.4 2.5 0.6
Rated speed Rpm 3000 3000 3000 3000
Holding torque N.m 0.16 0.16 0.32 0.32
Peak torque N.m 0.48 0.32 0.95 0.64
Voltage constant V/1000r/min 9.2 36.8 8.2 32.8
Torque coefficient N.m/A 0.145 0.4 0.128 0.53
Rotor inertia Kg.m2 0.025x10-4 0.025x10-4 0.051x10-4 0.051x10-4
Line-Line Resistance Ω 6.75 108 2.2 34
Line-Line Inductance mH 7.5 108 3 40
Mechanical time-constant Ms 1.11 1 1.36 0.18
Weight Kg 0.32 0.32 0.47 0.47
Encoder line number PPR 2500
Insulation class Class Class B
Safety class IP IP65
Environmental Conditions Temperature ℃ Temperature -20℃ ~ +40℃  Humidity Below 90%RH No dewing
Motor winding plue / Winding lead wire U (red) V (yellow) W (blue) PE (yellow/ green/black)
Plug serial number 1 2 3 4
Encoder plug / Signal lead wire 5V 0V B+ Z- U+ Z+ U- A+ V+ W+ V- A- B- W- PE
Plug serial number 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1
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60CST Series AC Servo Motors

Ac Servo motor, small size, high precision, fast response, quiet operation, high efficieny, long service life, versatility.
Optional: Brakes, Drivers /Controllers...
Motor Model Unit 60CST-M00630 60CST-M01330 60CST-M01930
Rated power W 200 400 600
Rated voltage V 220 220 220
Rated current A 1.2 2.8 3.5
Rated speed Rpm 3000 3000 3000
Holding torque N.m 0.637 1.27 1.91
Peak torque N.m 1.91 3.9 5.73
Voltage constant V/1000r/min 30.9 29.6 34
Torque coefficient N.m/A 0.53 0.45 0.55
Rotor inertia Kg.m2 0.175x10-4 0.29x10-4 0.39x10-4
Line-Line Resistance Ω 6.18 2.35 1.93
Line-Line Inductance mH 29.3 14.5 10.7
Mechanical time-constant Ms 4.74 6.17 5.5
Weight Kg 1.16 1.6 2.07
Encoder line number PPR 2500
Insulation class Class Class B
Safety class IP IP65
Environmental Conditions Temperature ℃ Temperature -20℃ ~ +40℃ Humidity Below 90%RH No dewing
Motor winding plue / Winding lead wire U (red) V (yellow) W (blue) PE (yellow/ green/black)
Plug serial number 1 2 3 4
Encoder plug / Signal lead wire 5V 0V B+ Z- U+ Z+ U- A+ V+ W+ V- A- B- W- PE
Plug serial number 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1
Absolute Encoder Socket (7 pin) / Signal lead wire E- E+ SD- 0V SD+ +5V PE
Plug serial number 2 3 4 5 6 7 1
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80ST Series AC Servo Motors

Ac Servo motor, small size, high precision, fast response, quiet operation, high efficieny, long service life, versatility.
Optional: Brakes, Drivers /Controllers...
Motor Model Unit 80ST-M01330 80ST-M02430 80ST-M03520 80ST-M04025
Rated power KW 0.4 0.75 0.73 1
Rated voltage V 220 220 220 220
Rated current A 2 3 3 4.4
Rated speed Rpm 3000 3000 2000 2500
Holding torque N.m 1.27 2.39 3.5 4
Peak torque N.m 3.8 7.1 10.5 12
Peak Current A 6 9 9 13.2
Voltage constant V/1000r/min 40 48 71 56
Torque coefficient N.m/A 0.64 0.8 1.17 0.9
Rotor inertia Kg.m2 1.05x10-4 1.85x10-4 2.63x10-4 2.97x10-4
Line-Line Resistance Ω 4.44 2.88 3.65 1.83
Line-Line Inductance mH 7.93 6.4 8.8 4.72
Mechanical time-constant Ms 1.66 2.22 2.4 2.58
Weight Kg 1.78 2.9 3.9 4.1
Encoder line number PPR 2500
Insulation class Class Class B
Safety class IP IP65
Environmental Conditions Temperature ℃ Temperature -20℃ ~ +40℃ Humidity Below 90%RH No dewing
Motor winding plue / Winding lead wire U (red) V (yellow) W (blue) PE (yellow/ green/black)
Plug serial number 1 2 3 4
Photoelectric Encoder Socket (15 Pin) / Signal lead wire 5V 0V B+ Z- U+ Z+ U- A+ V+ W+ V- A- B- W- PE
Plug serial number 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1
Absolute Encoder Socket (7 pin) / Signal lead wire E- E+ SD- 0V SD+ +5V PE
Plug serial number 2 3 4 5 6 7 1
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90ST Series AC Servo Motors

Ac Servo motor, small size, high precision, fast response, quiet operation, high efficieny, long service life, versatility.
Optional: Brakes, Drivers /Controllers...
Motor Model Unit 90ST-M02430 90ST-M03520 90ST-M04025
Rated power KW 0.75 0.73 1
Rated voltage V 220 220 220
Rated current A 3 3 4
Rated speed Rpm 3000 2000 2500
Holding torque N.m 2.4 3.5 4
Peak torque N.m 7.1 10.5 12
Peak Current A 9 9 12
Voltage constant V/1000r/min 51 67 60
Torque coefficient N.m/A 0.8 1.2 1
Rotor inertia Kg.m2 2.45x10-4 3.4x10-4 3.7x10-4
Line-Line Resistance Ω 3.2 4.06 2.69
Line-Line Inductance mH 7 9.7 6.21
Mechanical time-constant Ms 2.2 2.39 2.3
Weight Kg 3.1 3.9 4.2
Encoder line number PPR 2500
Insulation class Class Class B
Safety class IP IP65
Environmental Conditions Temperature ℃ Temperature -20℃ ~ +40℃ Humidity Below 90%RH No dewing
Motor winding plue / Winding lead wire U (red) V (yellow) W (blue) PE (yellow/ green/black)
Plug serial number 1 2 3 4
Photoelectric Encoder Socket (15 Pin) / Signal lead wire 5V 0V B+ Z- U+ Z+ U- A+ V+ W+ V- A- B- W- PE
Plug serial number 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1
Absolute Encoder Socket (7 pin) / Signal lead wire E- E+ SD- 0V SD+ +5V PE
Plug serial number 2 3 4 5 6 7 1
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100ST Series AC Servo Motors

Ac Servo motor, small size, high precision, fast response, quiet operation, high efficieny, long service life, versatility.
Optional: Brakes, Drivers /Controllers...
Motor Model Unit 100ST-M03230 100ST-M06430
Rated power KW 1 2
Rated voltage V 220 220
Rated current A 5 9.9
Rated speed Rpm 3000 3000
Holding torque N.m 3.2 6.4
Peak torque N.m 9.6 19.2
Voltage constant V/1000r/min 39.5 39
Torque coefficient N.m/A 0.64 0.65
Rotor inertia Kg.m2 2.458X10-4 4.422X10-4
Line-Line Resistance Ω 0.98 0.41
Line-Line Inductance mH 8.91 3.92
Mechanical time-constant Ms 9.09 9.56
Weight Kg 4.04 7.12
Encoder line number PPR 2500
Insulation class Class Class B
Safety class IP IP65
Environmental Conditions Temperature ℃ Temperature -20℃ ~ +40℃ Humidity Below 90%RH No dewing
Motor winding plue / Winding lead wire U V W PE
Plug serial number 2 3 4 1
Photoelectric Encoder Socket (15 Pin) / Signal lead wire 5V 0V B+ Z- U+ Z+ U- A+ V+ W+ V- A- B- W- PE
Plug serial number 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1
Absolute Encoder Socket (7 pin) / Signal lead wire E- E+ SD- 0V SD+ +5V PE
Plug serial number 2 3 4 5 6 7 1
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110ST Series AC Servo Motors

Ac Servo motor, small size, high precision, fast response, quiet operation, high efficieny, long service life, versatility.
Optional: Brakes, Drivers /Controllers...
Motor Model Unit 110ST-M02030 110ST-M04020 110ST-M04030 110ST-M05030 110ST-M06020 110ST-M06030
Rated power KW 0.6 0.8 1.2 1.5 1.2 1.8
Rated voltage V 220 220 220 220 220 220
Rated current A 2.5 3.5 5 6 4.5 6
Rated speed Rpm 3000 2000 3000 3000 2000 3000
Holding torque N.m 2 4 4 5 6 6
Peak torque N.m 6 12 12 15 12 18
Voltage constant V/1000r/min 56 79 54 62 83 60
Torque coefficient N.m/A 0.8 1.14 0.8 0.83 1.3 1
Rotor inertia Kg.m2 0.31x10-3 0.54x10-3 0.54x10-3 0.63x10-3 0.76x10-3 0.76x10-3
Line-Line Resistance Ω 3.6 2.41 1.09 1.03 1.46 0.81
Line-Line Inductance mH 8.32 7.3 3.3 3.43 4.7 2.59
Mechanical time-constant Ms 2.3 3 3 3.33 3.2 3.2
Weight Kg 4.5 6 6 6.8 7.9 7.9
Encoder line number PPR 2500
Insulation class Class Class B
Safety class IP IP65
Environmental Conditions Temperature ℃ Temperature -20℃ ~ +40℃ Humidity Below 90%RH No dewing
Motor winding plue / Winding lead wire U V W PE
Plug serial number 2 3 4 1
Photoelectric Encoder Socket (15 Pin) / Signal lead wire 5V 0V B+ Z- U+ Z+ U- A+ V+ W+ V- A- B- W- PE
Plug serial number 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1
Absolute Encoder Socket (7 pin) / Signal lead wire E- E+ SD- 0V SD+ +5V PE
Plug serial number 2 3 4 5 6 7 1
750w ac servo motor​

130ST Series AC Servo Motors

Ac Servo motor, small size, high precision, fast response, quiet operation, high efficieny, long service life, versatility.
Optional: Brakes, Drivers /Controllers...
Motor Model Unit 130ST-M04025 130ST-M05025 130ST-M06025 130ST-M07725 130ST-M10010 130ST-M10015 130ST-M10025 130ST-M15015 130ST-M15025
Rated power KW 1 1.3 1.5 2 1 1.5 2.6 2.3 3.8
Rated voltage V 220 220 220 220 220 220 220 220 220
Rated current A 4 5 6 7.5 4.5 6 10 9.5 13.5
Rated speed Rpm 2500 2500 2500 2500 1000 1500 2500 1500 2500
Holding torque N.m 4 5 6 7.7 10 10 10 15 15
Peak torque N.m 12 15 18 22 20 25 25 30 30
Voltage constant V/1000r/min 72 68 65 68 140 103 70 114 67
Torque coefficient N.m/A 1 1 1 1.03 2.2 1.67 1 1.58 1.11
Rotor inertia Kg.m2 0.85X10-3 1.06X10-3 1.26X10-3 1.53X10-3 1.94X10-3 1.94X10-3 1.94X10-3 2.77X10-3 2.77X10-3
Line-Line Resistance Ω 2.76 1.84 1.21 1.01 2.7 1.5 0.73 1.1 0.49
Line-Line Inductance mH 6.42 4.9 3.87 2.94 8.8 4.37 2.45 4.45 1.68
Mechanical time-constant Ms 2.32 2.66 3.26 3.8 3.26 2.91 3.36 4.05 3.43
Weight Kg 6.2 6.6 7.4 8.3 10.2 10.2 9.8 12.6 11.7
Encoder line number PPR 2500
Insulation class Class Class B
Safety class IP IP65
Environmental Conditions Temperature ℃ Temperature -20℃ ~ +40℃ Humidity Below 90%RH No dewing
Motor winding plue / Winding lead wire U V W PE
Plug serial number 2 3 4 1
Photoelectric Encoder Socket (15 Pin) / Signal lead wire 5V 0V A+ B+ Z+ A- B- Z- U+ V+ W+ U- V- W- PE
Plug serial number 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1
Absolute Encoder Socket (7 pin) / Signal lead wire E- E+ SD- 0V SD+ +5V PE
Plug serial number 2 3 4 5 6 7 1
ac servo motor and drive​

150ST Series AC Servo Motors

Ac Servo motor, small size, high precision, fast response, quiet operation, high efficieny, long service life, versatility.
Optional: Brakes, Drivers /Controllers...
Motor Model Unit 150ST-M15025 150ST-M15020 150ST-M18020 150ST-M23020 150ST-M27020
Rated power KW 3.8 3 3.6 4.7 5.5
Rated voltage V 220 220 220 220 220
Rated current A 17 14 17 21 24
Rated speed Rpm 2500 2000 2000 2000 2000
Holding torque N.m 15 15 18 23 27
Peak torque N.m 30 30 36 46 54
Voltage constant V/1000r/min 59 70 71 72 64
Torque coefficient N.m/A 0.88 10.7 1.05 1.09 1.1
Rotor inertia Kg.m2 3.88X10-3 3.88X10-3 4.6X10-3 5.8X10-3 6.5X10-3
Line-Line Resistance Ω 0.23 0.34 0.255 0.2 0.125
Line-Line Inductance mH 1.08 1.55 1.3 1.06 0.7
Mechanical time-constant Ms 4.7 4.56 5.1 5.3 5.6
Weight Kg 15 15 17 20.4 22.7
Encoder line number PPR 2500
Insulation class Class Class B
Safety class IP IP65
Environmental Conditions Temperature ℃ Temperature -20℃ ~ +40℃ Humidity Below 90%RH No dewing
Motor winding plue / Winding lead wire U V W PE
Plug serial number 2 3 4 1
Photoelectric Encoder Socket (15 Pin) / Signal lead wire 5V 0V A+ B+ Z+ A- B- Z- U+ V+ W+ U- V- W- PE
Plug serial number 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1
Absolute Encoder Socket (7 pin) / Signal lead wire E- E+ SD- 0V SD+ +5V PE
Plug serial number 2 3 4 5 6 7 1
ac servo motors

180ST Series AC Servo Motors

Ac Servo motor, small size, high precision, fast response, quiet operation, high efficieny, long service life, versatility.
Optional: Brakes, Drivers /Controllers...
Motor Model Unit 180ST-M17215 180ST-M19015 180ST-M21520 180ST-M27010 180ST-M27015 180ST-M35010 180ST-M35015 180ST-M48015
Rated power KW 2.7 3 4.5 2.9 4.3 3.7 5.5 7.5
Rated voltage V 220 380 220 380 220 380 220 380 220 380 220 380 220 380 220 380
Rated current A 10.5 6.5 12 7.5 16 9.5 12 7.5 16 10 16 10 24 12 32 20
Rated speed Rpm 1500 1500 2000 1000 1500 1000 1500 1500
Holding torque N.m 17.2 19 21.5 27 27 35 35 48
Peak torque N.m 43 47 63 67 67 70 70 96
Voltage constant V/1000r/min 112 167 97 170 84 140 138 224 103 172 134 223 90 181 94 156
Torque coefficient N.m/A 1.64 2.65 1.58 2.5 1.34 2.26 2.25 3.6 1.69 2.7 2.2 3.5 1.48 2.9 1.5 2.4
Rotor inertia Kg.m2 3.4x10-3 3.8x10-3 4.7x10-3 6.1x10-3 6.1x10-3 8.6x10-3 8.6x10-3 9.5x10-3
Line-Line Resistance Ω 0.7 1.47 0.4 1.23 0.24 0.71 0.48 1.37 0.28 0.796 0.31 0.93 0.14 0.62 0.104 0.273
Line-Line Inductance mH 3.5 7.8 2.42 7.3 1.45 4 3.26 8.6 1.74 4.83 3.28 9.1 1 4 0.77 2.14
Mechanical time-constant Ms 5 5.3 6 5.93 6 5.6 6.79 6.27 6.2 6 10.58 9.78 7.14 6.45 7.4 7.8
Weight Kg 19.5 20.5 22.2 25.5 25.5 30.5 30.5 40
Encoder line number PPR 2500
Insulation class Class Class B
Safety class IP IP65
Environmental Conditions Temperature ℃ Temperature -20℃ ~ +40℃ Humidity Below 90%RH No dewing
Motor winding plue / Winding lead wire U V W PE
Plug serial number 2 3 4 1
Photoelectric Encoder Socket (15 Pin) / Signal lead wire 5V 0V A+ B+ Z+ A- B- Z- U+ V+ W+ U- V- W- PE
Plug serial number 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1
Absolute Encoder Socket (7 pin) / Signal lead wire E- E+ SD- 0V SD+ +5V PE
Plug serial number 2 3 4 5 6 7 1

OEM ODM Customized Services FAQs

—— OEM ODM Customized Intelligent BLDC / Steper Motion Control Manufacturer / Solution Provider Since 2011  ——

  • 1. What is an Ac servo motor?

    An AC servo motor is a closed-loop motion control motor that adjusts speed and position in real time using feedback from an encoder or resolver for high precision.

  • 2. What are ac servo motor kits?

    AC servo motor kits include the motor, encoder, and often accessories such as brakes and drivers to provide a complete motion control solution.

  • 3. What are the main advantages of an Ac servo motor?

    AC servo motors deliver high precision, fast dynamic response, wide speed range, high efficiency, and quiet operation for demanding automation tasks.

  • 4. Why choose ac servo motor kits for system integration?

    AC servo motor kits simplify installation, reduce wiring complexity, and ensure compatible components for reliable system performance.

  • 5. Can ac servo motor kits improve energy efficiency?

    Yes, AC servo kits optimize power use by delivering energy only when needed, reducing operational cost and heat generation.

  • 6. What precision can I expect from an Ac servo motor system?

    Closed-loop control with high-resolution encoders enables precise speed, torque, and positioning control, ideal for precision machinery.

  • 7. Are Jkongmotor Ac servo motors suitable for high speed applications?

    Yes, these motors maintain stable performance and torque across a wide speed range, from slow positioning to high RPM motion.

  • 8. Do the ac servo motor kits include feedback devices?

    Yes, most kits come with high quality encoders (typically 2500 PPR) for accurate feedback and reliable closed-loop control.

  • 9. Can brakes be added to ac servo motor kits?

    Yes, optional brakes can be configured to improve holding torque and enhance safety in specific applications.

  • 10. What industrial applications use ac servo motor kits?

    AC servo motor kits are widely used in robotics, CNC machines, packaging, automated conveyors, printing machines and more.
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