Mitsubishi Electric MELSERVO-J2S Series Transition Handbook page 418

Part 9: Review on Replacement of Optional Peripheral Equipment
200_4 MR-RB5H-4/MR-RB5G-4/MR-RB54-4
500_4
700_4
49 82.5
2.3
200
217
11K_4 MR-RB6B-4/MR-RB60-4
15K_4 MR-RB136-4/MR-RB138-4
30K_4
2-φ6 mounting hole
37K_4
45K_4
55K_4
10
15
15
82.5
MR-J2S
Screw for mounting cooling fan
(2-M3 screw)
Positioned on opposite side
7×14
slotted
hole
7
17 12 108
120
Cooling fan intake
15 197
230
260 215
15
230
Screw for mounting cooling fan
4-M3 screw
82.5
MR-RB5G-4/MR-RB54-4/MR-RB5U-4
49 82.5
Intake
2.3
(30) 200
217
8
MR-RB137-4/MR-RB13V-4
2-φ6 mounting hole
2.3
10
15
15
15
82.5
9 - 9
MR-J4
Screw for mounting cooling fan
(2-M3 screw)
Positioned on opposite side
7×14
slotted
hole
7
12
17 108
120
MR-RB5K-4/MR-RB6K-4
Cooling fan intake
15
197
230
260 215
15
230
Screw for mounting cooling fan
4-M3 screw
82.5
Intake
(30)
8
2.3
15