Rotary Servo Motors With Special Shafts; Keyed Shaft (With Double Round-Ended Key) - Mitsubishi Electric MELSERVO-J5 HK Series User Manual

8.5

Rotary servo motors with special shafts

For rotary servo motors, there are two types of shafts: keyed shaft (with double round-ended key) and keyed shaft (without
key).
To prevent an accident such as motor shaft fracture, do not use a servo motor with a keyed shaft for frequent start/stop
applications.
Rotary servo motor
HK-RT103(4)W
HK-RT153(4)W
HK-RT203(4)W
HK-RT353(4)W
HK-RT503(4)W
HK-RT703(4)W

Keyed shaft (with double round-ended key)

R
Q
QK
[Unit: mm]
Rotary servo motor
HK-RT103(4)WK
HK-RT153(4)WK
HK-RT203(4)WK
HK-RT353(4)WK
HK-RT503(4)WK
HK-RT703(4)WK
8 HK-RT SERIES
196
8.5 Rotary servo motors with special shafts
Shaft shape
Keyed shaft
With double round-ended key
K
QL
U Y
A
A
T
Section A-A
Variable dimensions
S R Q
40 36
0
19
-0.013
55 50
0
24
-0.013
Without key
N
W QK QL
6 25 5
8 36 5
U T Y
3.5 6 M5
Screw hole
depth
20
4 7 M8
Screw hole
depth
20