Mitsubishi Electric MELSERVO-J2S Series Transition Handbook page 269

Part 7: Common Reference Material
Comparison of 400 V class dimensions
MR-J2S series dimensions
MR-J2S-60_4, MR-J2S-100_4
Servo amplifier Mass [kg]
MR-J2S-60A4/B4 2.1
MR-J2S-100A4/B4
2.2
MR-J2S-200A4/B4
MR-J2S-200_4
Servo amplifier Mass [kg]
MR-J2S-60A4/B4 2.1
MR-J2S-100A4/B4
2.2
MR-J2S-200A4/B4
MR-J2S-350_4
Servo amplifier Mass [kg]
MR-J2S-350A4/B4
5
MR-J2S-500A4/B4
MR-J4 series dimensions
MR-J4-60_4, MR-J4-100_4
φ6 mounting hole
MR-BAT6V1SET
mounted
φ6 mounting hole
MR-BAT6V1SET
mounted
2-φ6 mounting hole
7 - 30
MR-J4-200_4
MR-J4-350_4
Cooling fan exhausts air
MR-BAT6V1SET
mounted
Exhaust
Cooling fan
intakes air
Intake