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A jaw coupling is a type of general purpose power transmission coupling that also can be used in motion control (servo) applications. It is designed to transmit torque (by connecting two shafts) while damping system vibrations and accommodating misalignment, which protects other components from damage. Jaw couplings are composed of three parts: two metallic hubs and an elastomer insert called an element, but commonly referred to as a "spider". The three parts press fit together with a jaw from each hub fitted alternately with the lobes of the spider. Jaw coupling torque is transmitted through the elastomer lobes in compression.
Tn
/(N·m)
[n]
/(r/min)
d1d2dz
/mm
L0
/mm
D
/mm
m
/kg
I
/(kg·m2)
Y
J1,Z
L
a/HA
b/HD
L
80±5
60±5
LM1
25
45
15 300
12,14
32
27
35
86
50
0.66
0.000 2
16,18,19
42
30
20,22,24
52
38
25
62
44
LM2
50
100
12 000
16,18,19
42
30
38
95
60
0.93
0.000 4
20,22,24
52
38
25,28
62
44
30
82
60
LM3
100
200
10 900
20,22,24
52
38
40
103
70
1.41
0.000 9
25,28
62
44
30,32
82
60
LM4
140
280
9 000
22,24
52
38
45
114
85
2.18
0.002
25,28
62
44
30,32,35,38
82
60
40
112
84
LM5
350
400
7 300
25,28
62
44
50
127
105
3.6
0.005
30,32,35,38
82
60
40,42,45,
112
84
LM6
400
710
6 100
30,32,35,38
82
60
55
143
125
6.07
0.0114
40,42,45,48
112
84
LM7
630
1 120
5 300
35*,38*
82
60
60
159
145
9.09
0.0232