Mitsubishi Electric MELSERVO-J4 MR-J4 TM Instruction Manual page 392

11. OPTIONS AND PERIPHERAL EQUIPMENT
(d) Mounting dimensional diagram
Servo
amplifier
Attachment
236
280
Mounting
hole
Approx. 260
11 - 99
[Unit: mm]
20
Panel
Servo amplifier
Panel
3.2
Approx. 11.5
155 105
Approx. 260