Mitsubishi HG-JR User Manual

6. HG-MR SERIES/HG-KR SERIES 

6 -  7 

 
6.5 Servo motors with special shafts 

The servo motors with special shafts indicated by the symbols (K and D) in the table are available. K and D 
are the symbols included in the servo motor model names. Refer to section 6.6.2 (4) for geared servo motors 
with special shaft. 

 

Servo motor 

Shaft shape 

Key shaft (with key) 

D cut shaft 

HG-MR053(B)_
HG-MR13(B)_ 
HG-KR053(B)_ 
HG-KR13(B)_ 

 D 

HG-MR23(B)_ 
HG-MR43(B)_ 
HG-MR73(B)_ 
HG-KR23(B)_ 
HG-KR43(B)_ 
HG-KR73(B)_ 

K  

 
6.5.1 Key shaft (with 2 round end key) 

Q

A

A

QK

R

T

W

U

QL

Y

Shaft section view A-A

S

 

Variable dimension table 

[Unit: mm]

Servo motor 

Variable dimensions 

S R Q W 

QK 

QL U T  Y 

HG-MR23(B)K 
HG-MR43(B)K 
HG-KR23(B)K 
HG-KR43(B)K 

14h6 30 26

5 20 3  3  5 

M4 

Screw 

hole 

depth 

15 

HG-MR73(B)K 
HG-KR73(B)K 

19h6 40 36

6  25  5 3.5 6 

M5 

Screw 

hole 

depth 

20 

 
6.5.2 D cut shaft 

[Unit: mm] 

8h6

25

21.5

20.5

1