MELSERVO J4 Rotary Servo Motor

Rotary 
Servomotor 
Series

Rated Speed (Max. r/min)

Rated Output Capacity (kW) (*1)

Servomotor Type

Protective Degree (*3)

Compatible Series

Features

Application Examples

 

Electro-magnetic
Brake Available

With Reducer (G1) (*2)

With Reducer (G5, G7) (*2)

 

Small 
Capacity

HG-KR

3000 (6000)

5 Types
0.05, 0.1, 0.2, 0.4, 0.75

X

X

X

IP65

HF-KP

Low inertia, perfect for general industrial machines

  • Belt Drive
  • Robots
  • Mounters
  • Sewing Machines
  • X-Y Tables
  • Food Processing Machines
  • Semiconductor manufacturing devices
  • Knitting and embroidery machines

HG-MR

3000 (6000)

5 Types
0.05, 0.1, 0.2, 0.4, 0.75

X

-

-

IP65

HF-MP

Ultra-low inertia
Well suited for
high-throughput
operations

  • Inserters
  • Mounters

Medium Capacity

HG-SR

1000 (1500)

6 Types
0.5, 0.85, 1.2, 2.0, 3.0, 4.2

X

-

-

IP67

HF-SP

Medium inertia
This series is
available with two rated speeds

  • Material handling systems
  • Robots
  • X-Y tables

2000 (3000)

14 types
0.5, 1.0, 1.5, 2.0, 3.5, 5.0, 7.0

 

0.5, 1.0, 1.5, 2.0, 3.5,5.0, 7.0

X

X

X

IP67

Medium/
Large 
Capacity

HG-JR

3000

(6000: 0.5~5 kW

5000: 7, 9 kW)

18 types
0.5, 0.75, 1.0, 1.5, 2.0, 3.5, 5.0, 7.0, 9.0

 

0.5, 0.75, 1.0, 1.5, 2.0,3.5, 5.0, 7.0, 9.0

X

-

-

IP67

HF-JP

Low inertia

Well suited for
high-throughput and high-acceleration/
deceleration
operations

  • Food packaging machines
  • Printing machines

1500

(3000: 11~15 kW

2500: 22 kW_)

14 types
7.0, 11, 15, 22, 30, 37 7.0, 11, 15, 22, 30,37, 45, 55

X (*5)

-

-

IP67/

 

IP44

(*4)

HF-JP

 

HA-LP

  • Injection molding machines
  • Press machines

1000

(2000: 6~12 kW

1500: 15~37 kW_)

16 types
6.0, 8.0, 12, 15, 20, 25, 30, 37

6.0, 8.0, 12, 15, 20, 25, 30, 37

X (*5)

-

-

IP67/

 

IP44

(*4)

HA-LP

Medium Capacity

HG-RR

3000

(4500)

5 types
1.0, 1.5, 2.0, 3.5, 5.0

X

-

-

IP65

HC-RP

Ultra-low inertia
Well suited for
high-throughput
operations

  • Ultra-high-throughput material handling systems

Medium capacity, flat type

HG-UR

2000

(3000: 0.75~2 kW

2500: 3.5, 5 kW)

5 types
0.75, 1.5, 2.0, 3.5, 5.0

X

-

-

IP65

HC-UP

Flat type

 

The flat design makes
this unit well suited for
situations where the
installation space is
limited

  • Robots
  • Food processing machines

 

HG-KR Series 3000 r/min (Low Inertia, Small Capacity) Specifications 200V

Servomotor Model HG-KR_

053(B)

13(B)

23(B)

43(B)

73(B)

Servo Amplifier Model

MR-J4-_

Refer to "Combinations of Servomotor and Servo Amplifier" in this selection guide

MR-J4W_-_

Power Supply Capacity (kVA) (*1)

0.3

0.3

0.5

0.9

1.3

Continuous Running Duty

Rated Output (W)

50

100

200

400

750

Rated Torque (N•m) 
(Note 3)

0.16

0.32

0.64

1.3

2.4

Maximum Torque (N•m)

0.56

1.1

2.2

4.5

8.4

Rated Speed (r/min)

3000

Maximum Speed (r/min)

6000

Permissible Instantaneous Speed (r/min)

6900

Power Rate Continuous 
Rated Torque

Standard (kW/s)

5.63

13.0

18.3

43.7

45.2

With Electromagnetic Brake (kW/s)

5.37

12.1

16.7

41.3

41.6

Rated Current (A)

0.9

0.8

1.3

2.6

4.8

Maximum Current (A)

3.2

2.5

4.6

9.1

17

Regenerative Braking Frequency (*2)

MR-J4- (times/min)

(*4)

(*4)

453

268

157

MR-J4W_- (times/min)

2500

1350

451

268

393

Moment of inertia 
J (x10-4kg•m²)

Standard

0.0450

0.0777

0.221

0.371

1.26

With Electromagnetic Brake

0.0472

0.0837

0.243

0.393

1.37

Recommended Load/Motor Inertia Ratio (Note 1)

17 times or less

26 times or less

25 times or less

17 times or less

Speed/Position Detector

Absolute/incremental 22-bit encoder (resolution: 4194304 pulses/rev)

Oil Seal

None

None (Servomotors with oil seal are available. 
(HG-KR_J))

Insulation Class

130 (B)

Structure

Totally enclosed, natural cooling (IP rating: IP65) (Note 2)

Environment (*3)

Ambient Temperature

0°C to 40°C (non-freezing), storage: -15°C to 70°C (non-freezing)

Ambient Humidity

80% RH maximum (non-condensing), storage: 90% RH maximum (non-condensing)

Atmosphere

Indoors (no direct sunlight); no corrosive gas, inflammable gas, oil mist or dust

Elevation / Vibration (*4)

1000 m or less above sea level; X: 49 m/s² Y: 49 m/s²

Vibration Rank

V10 (*6)

Permissible Load 
for the Shaft (*5)

L (mm)

25

25

30

30

40

Radial (N)

88

88

245

245

392

Thrust (N)

59

59

98

98

147

Weight (kg)

Standard

0.34

0.54

0.91

1.4

2.8

With Electromagnetic Brake

0.54

0.74

1.3

1.8

3.8

 

HG-MR Series 3000 r/min (Ultra Low Inertia, Small Capacity) Specifications 200V

Servomotor Model HG-MR_

053(B)

13(B)

23(B)

43(B)

73(B)

Servo Amplifier Model

MR-J4-_

Refer to "Combinations of Servomotor and Servo Amplifier" in this selection guide

MR-J4W_-_

Power Supply Capacity (kVA) (*1)

0.3

0.3

0.5

0.9

1.3

Continuous Running Duty

Rated Output (W)

50

100

200

400

750

Rated Torque (N•m) 
(Note 3)

0.16

0.32

0.64

1.3

2.4

Maximum Torque (N•m)

0.48

0.95

1.9

3.8

7.2

Rated Speed (r/min)

3000

Maximum Speed (r/min)

6000

Permissible Instantaneous Speed (r/min)

6900

Power Rate Continuous Rated Torque

Standard (kW/s)

15.6

33.8

46.9

114.2

97.3

With Electromagnetic Brake (kW/s)

11.3

28.0

37.2

98.8

82.1

Rated Current (A)

1.0

0.9

1.5

2.6

5.8

Maximum Current (A)

3.1

2.5

5.3

9.0

20.0

Regenerative Braking Frequency (*2)

MR-J4- (times/min)

(Note 4)

(Note 4)

1180

713

338

MR-J4W_- (times/min)

7310

3640

1170

710

846

Moment of Inertia 
J (x10-4kg•m²)

Standard

0.0162

0.0300

0.0865

0.142

0.586

With Electromagnetic Brake

0.0224

0.0362

0.109

0.164

0.694

Recommended Load/Motor Inertia Ratio (Note 1)

35 times or less

32 times or less

Speed/Position Detector

Absolute/incremental 22-bit encoder (resolution: 4194304 pulses/rev)

Oil Seal

None

None (Servomotors with oil seal are available. 
(HG-MR_J))

Insulation Class

130 (B)

Structure

Totally enclosed, natural cooling (IP rating: IP65) (Note 2)

Environment (*3)

Ambient Temperature

0°C to 40°C (non-freezing), storage: -15°C to 70°C (non-freezing)

Ambient Humidity

80% RH maximum (non-condensing), storage: 90% RH maximum (non-condensing)

Atmosphere

Indoors (no direct sunlight); no corrosive gas, inflammable gas, oil mist or dust

Elevation / Vibration (*4)

1000 m or less above sea level; X: 49 m/s² Y: 49 m/s²

Vibration Rank

V10 (*6)

Permissible Load for the Shaft (*5)

L (mm)

25

25

30

30

40

Radial (N)

88

88

245

245

392

Thrust (N)

59

59

98

98

147

Weight (kg)

Standard

0.34

0.54

0.91

1.4

2.8

With Electromagnetic Brake

0.54

0.74

1.3

1.8

3.8

 

HG-SR 2000 r/min Series (Medium Inertia, Medium Capacity) Specifications 200V

Servomotor Model HG-SR_

52(B)

102(B)

152(B)

202(B)

352(B)

502(B)

702(B)

Servo Amplifier Model

MR-J4-

Refer to "Combinations of Servomotor and Servo Amplifier" in this guide.

MR-J4W_-_

Power Supply Capacity (kVA) (*1)

1.0

1.7

2.5

3.5

5.5

7.5

10

Continuous Running 
Duty

Rated Output (kW)

0.5

1.0

1.5

2.0

3.5

5.0

7.0

Rated Torque (N•m) (Note 3)

2.4

4.8

7.2

9.5

16.7

23.9

33.4

Maximum Torque (N•m)

7.2

14.3

21.5

28.6

50.1

71.6

100

Rated Speed (r/min)

2000

Maximum Speed (r/min)

3000

Permissible Instantaneous Speed (r/min)

3450

Power Rate Continuous 
Rated Torque (kW/s)

Standard (kW/s)

7.85

19.7

32.1

19.5

35.5

57.2

74.0

With ElectromagneticBrake (kW/s)

6.01

16.5

28.2

16.1

31.7

52.3

69.4

Rated Current (A)

2.9

5.6

9.4

9.6

14

22

26

Maximum Current (A)

9.0

17.4

29

31

45

70

83

Regenerative Braking Frequency (*2)

MR-J4- (times/min)

31

38

139

47

28

29

25

MR-J4W_- (times/min)

154

96

-

-

-

-

-

Moment of Inertia 
J (x10-4kg•m²)

Standard

7.26

11.6

16.0

46.8

78.6

99.7

151

With Electromagnetic Brake

9.48

13.8

18.2

56.5

88.2

109

161

Recommended Load/Motor Inertia Ratio (Note 1)

15 times or less

17 times or less

15 times or less

Speed/Position Detector

Absolute/incremental 22-bit encoder (resolution: 4194304 pulses/rev)

Oil Seal

None (Servomotors with oil seal are available. (HG-SR_J))

Insulation Class

155 (F)

Structure

Totally enclosed, natural cooling (IP rating: IP67) (Note 2)

Environment (*3)

Ambient Temperature

0°C to 40°C (non-freezing), storage: -15°C to 70°C (non-freezing)

Ambient Humidity

80% RH maximum (non-condensing), storage: 90% RH maximum (non-condensing)

Atmosphere

Indoors (no direct sunlight); no corrosive gas, inflammable gas, oil mist or dust

Elevation

1000 m or less above sea level

Vibration (*4)

X: 24.5 m/s² Y: 24.5 m/s²

X: 24.5 m/s² Y: 49 m/s²

X: 24.5 m/s² Y: 29.4 m/s²

Vibration Rank

V10 (*6)

Permissible Load 
for the Shaft (*5)

L (mm)

55

55

55

79

79

79

79

Radial (N)

980

980

980

2058

2058

2058

2058

Thrust (N)

490

490

490

980

980

980

980

Weight (kg)

Standard

4.8

6.2

7.3

11

16

20

27

With Electromagnetic Brake

6.7

8.2

9.3

17

22

26

33

 

HG-SR 2000 r/min Series (Medium Inertia, Medium Capacity) Specifications 400V

Servomotor Model HG-SR_

524(B)

1024(B)

1524(B)

2024(B)

3524(B)

5024(B)

7024(B)

Servo Amplifier Model

MR-J4-

Refer to "Combinations of Servomotor and Servo Amplifier" in this guide.

Power Supply Capacity (kVA) (*1)

1.0

1.7

2.5

3.5

5.5

7.5

10

Continuous Running Duty

Rated Output (kW)

0.5

1.0

1.5

2.0

3.5

5.0

7.0

Rated Torque (N•m) (Note 3)

2.4

4.8

7.2

9.5

16.7

23.9

33.4

Maximum Torque (N•m)

7.2

14.3

21.5

28.6

50.1

71.6

100

Rated Speed (r/min)

2000

Maximum Speed (r/min)

3000

Permissible Instantaneous Speed (r/min)

3450

Power Rate Continuous Rated Torque (kW/s)

Standard (kW/s)

7.85

19.7

32.1

19.5

35.5

57.2

74.0

With ElectromagneticBrake (kW/s)

6.01

16.5

28.2

16.1

31.7

52.3

69.4

Rated Current (A)

1.5

2.8

4.7

4.9

7

11

13

Maximum Current (A)

4.5

8.9

17

17

27

42

59

Regenerative Braking Frequency (*2)

MR-J4- (times/min)

46

29

139

47

34

29

25

Moment of Inertia 
J (x10-4kg•m²)

Standard

7.26

11.6

16.0

46.8

78.6

99.7

151

With Electromagnetic Brake

9.48

13.8

18.2

56.5

88.2

109

161

Recommended Load/Motor Inertia Ratio (Note 1)

15 times or less

17 times or less

15 times or less

Speed/Position Detector

Absolute/incremental 22-bit encoder (resolution: 4194304 pulses/rev)

Oil Seal

None (Servomotors with oil seal are available. (HG-SR_J))

Insulation Class

155 (F)

Structure

Totally enclosed, natural cooling (IP rating: IP67) (Note 2)

Environment (*3)

Ambient Temperature

0°C to 40°C (non-freezing), storage: -15°C to 70°C (non-freezing)

Ambient Humidity

80% RH maximum (non-condensing), storage: 90% RH maximum (non-condensing)

Atmosphere

Indoors (no direct sunlight); no corrosive gas, inflammable gas, oil mist or dust

Elevation

1000 m or less above sea level

Vibration (*4)

X: 24.5 m/s² Y: 24.5 m/s²

X: 24.5 m/s² Y: 49 m/s²

X: 24.5 m/s² Y: 29.4 m/s²

Vibration Rank

V10 (*6)

Permissible Load for the Shaft (*5)

L (mm)

55

55

55

79

79

79

79

Radial (N)

980

980

980

2058

2058

2058

2058

Thrust (N)

490

490

490

980

980

980

980

Weight (kg)

Standard

4.8

6.2

7.3

11

16

20

27

With Electromagnetic Brake

6.7

8.2

9.3

17

22

26

33

 

HG-JR 3000 r/min Series (Low Inertia, Medium Capacity) Specifications 200V

Servomotor Model HG-JR_

53(B)

73(B)

103(B)

153(B)

203(B)

353(B)

503(B)

703(B)

903(B)

Servo Amplifier Model

MR-J4-

Refer to "Combinations of Servomotor and Servo Amplifier" in this guide.

MR-J4W_-_

Power Supply Capacity (kVA) (*1)

1.0

1.3

1.7

2.5

3.5

5.5

7.5

10

13

Continuous Running 
Duty

Rated Output (kW)

0.5

0.75

1.0

1.5

2.0

3.3 <3.5> (Note 5)

5.0

7.0

9.0

Rated Torque (N•m) (Note 3)

1.6

2.4

3.2

4.8

6.4

10.5 <11.1> (Note 5)

15.9

22.3

28.6

Maximum Torque (N•m) (Note 6)

4.8 <6.4>

7.2 <9.6>

9.6 <12.7>

14.3 <19.1>

19.1 <25.5>

32.0 <44.6>

44.7 <63.7>

66.8

85.8

Rated Speed (r/min)

3000

Maximum Speed (r/min)

6000

5000

Permissible Instantaneous Speed (r/min)

6900

5750

Power Rate Continuous Rated Torque (kW/s)

Standard (kW/s)

16.7

27.3

38.2

60.2

82.4

83.5

133

115

147

With ElectromagneticBrake (kW/s)

12.5

22.0

32.2

53.1

74.8

71.6

119

93.9

125

Rated Current (A)

3.0

5.6

5.6

11

11

17 <18> (Note 5)

27

34

41

Maximum Current (A) (Note 5)

9.0 <12>

17 <23>

17 <23>

32 <43>

32 <43>

51 <71>

81 <108>

103

134

Regenerative Braking Frequency 
(*2, Note 5)

MR-J4- (times/min)

67 <137>

98 <511>

76 <396>

271 <271>

206 <206>

73 <98>

68 <89>

56

204 
(Note 7)

MR-J4W_- (times/min)

328 <328>

237

186

-

-

-

-

-

-

Moment of Inertia 
J (x10-4kg•m²)

Standard

1.52

2.09

2.65

3.79

4.92

13.2

19.0

43.3

55.8

With Electromagnetic Brake

2.02

2.59

3.15

4.29

5.42

15.4

21.2

52.9

65.4

Recommended Load/Motor Inertia Ratio (Note 1)

10 times or less

Speed/Position Detector

Absolute/incremental 22-bit encoder (resolution: 4194304 pulses/rev)

Oil Seal

Attached

Insulation Class

155 (F)

Structure

Totally enclosed, natural cooling (IP rating: IP67) (Note 2)

Environment (*3)

Ambient Temperature

0°C to 40°C (non-freezing), storage: -15°C to 70°C (non-freezing)

Ambient Humidity

80% RH maximum (non-condensing), storage: 90% RH maximum (non-condensing)

Atmosphere

Indoors (no direct sunlight); no corrosive gas, inflammable gas, oil mist or dust

Elevation

1000 m or less above sea level

Vibration (*4)

X: 24.5 m/s² Y: 24.5 m/s²

X: 24.5 m/s² Y: 29.4 m/s²

Vibration Rank

V10 (*6)

 

Permissible Load for the Shaft (*5)

L (mm)

40

40

40

40

40

55

55

79

79

Radial (N)

323

323

323

323

323

980

980

2450

2450

Thrust (N)

284

284

284

284

284

490

490

980

980

Weight (kg)

Standard

3.0

3.7

4.5

5.9

7.5

13

18

29

36

With Electromagnetic Brake

4.4

5.1

5.9

7.3

8.9

15

20

35

42

 

HG-JR 3000 r/min Series (Low Inertia, Medium Capacity) Specifications 400V

Servomotor Model HG-JR_

534(B)

734(B)

1034(B)

1534(B)

2034(B)

3534(B)

5034(B)

7034(B)

9034(B)

Servo Amplifier Model

MR-J4-

Refer to "Combinations of Servomotor and Servo Amplifier" in this guide

Power Supply Capacity (kVA) (*1)

1.0

1.3

1.7

2.5

3.5

5.5

7.5

10

13

Continuous Running Duty

Rated Output (kW)

0.5

0.75

1.0

1.5

2.0

3.3 <3.5> (Note 5)

5.0

7.0

9.0

Rated Torque (N•m) (Note 3)

1.6

2.4

3.2

4.8

6.4

10.5 <11.1> (Note 5)

15.9

22.3

28.6

Maximum Torque (N•m) (Note 6)

4.8 <6.4>

7.2 <9.6>

9.6 <12.7>

14.3 <19.1>

19.1 <25.5>

32.0 <44.6>

47.2 <63.7>

66.8

85.8

Rated Speed (r/min)

3000

Maximum Speed (r/min)

6000

5000

Permissible Instantaneous Speed (r/min)

6900

5750

Power Rate Continuous Rated Torque (kW/s)

Standard (kW/s)

16.7

27.3

38.2

60.2

82.4

83.5

133

115

147

With Electromagnetic Brake (kW/s)

12.5

22.0

32.2

53.1

74.8

71.6

119

93.9

125

Rated Current (A)

1.5

2.8

2.8

5.4

5.4

8.3 <8.8> (Note 5)

14

17

21

Maximum Current (A) (Note 6)

4.5 <6.0>

8.4 <12>

8.4 <12>

17 <22>

17 <22>

26 <36>

41 <54>

52

67

Regenerative Braking Frequency (*2) (Note 6)

MR-J4- (times/min)

99 <100>

72 <489>

56 <382>

265 <275>

203 <209>

75 <98>

68 <89>

56

205 
(Note 7)

Moment of Inertia 
J (x10-4kg•m²)

Standard

1.52

2.09

2.65

3.79

4.92

13.2

19.0

43.3

55.8

With Electromagnetic Brake

2.02

2.59

3.15

4.29

5.42

15.4

21.2

52.9

65.4

Recommended Load/Motor Inertia Ratio (Note 1)

10 times or less

Speed/Position Detector

Absolute/incremental 22-bit encoder (resolution: 4194304 pulses/rev)

Oil Seal

Attached

Insulation Class

155 (F)

Structure

Totally enclosed, natural cooling (IP rating: IP67) (Note 2)

Environment (*3)

Ambient Temperature

0°C to 40°C (non-freezing), storage: -15°C to 70°C (non-freezing)

Ambient Humidity

80% RH maximum (non-condensing), storage: 90% RH maximum (non-condensing)

Atmosphere

Indoors (no direct sunlight); no corrosive gas, inflammable gas, oil mist or dust

Elevation

1000 m or less above sea level

Vibration (*4)

X: 24.5 m/s² Y: 24.5 m/s²

X: 24.5 m/s² Y: 29.4 m/s²

Vibration Rank

V10 (*6)

Permissible Load for the Shaft (*5)

L (mm)

40

40

40

40

40

55

55

79

79

Radial (N)

323

323

323

323

323

980

980

2450

2450

Thrust (N)

284

284

284

284

284

490

490

980

980

Weight (kg)

Standard

3.0

3.7

4.5

5.9

7.5

13

18

29

36

With Electromagnetic Brake

4.4

5.1

5.9

7.3

8.9

15

20

35

42