The Steel Ball Torque Limiter features an automatic disengagement design: steel balls detach from the clamping grooves instantly in case of equipment overload to cut off power transmission, effectively preventing equipment stalling, gear tooth breakage and damage to core components.
Compared with friction-type torque limiters, it delivers several times faster response speed, providing more reliable protection for high-speed precision operation and heavy-load impact working conditions.
In case of overload the ratchet parts balls leave their indentations, and a relative motion between the driving and driven side is produced. In this way damages due to overload are avoided. The shift ring makes an axial motion to the shifting way "S" and activates the limit switch or proximity initiator. The signal can be used for control functions or for disconnection of the drive. For the restart we would recommend to electrically bypass the limit switch or proximity initiator for a short time.
Once the overload condition is resolved, the steel balls rotate within their cage—turning through a specific angle—and automatically reseat themselves into the next set of detents; consequently, the driving and driven components resume normal rotation after having rotated relative to one another through that same angle.
The JTA-series Steel Ball Torque Limiter meets the demanding requirements of modern electronic drive systems, offering high precision, high dynamic performance, and exceptional safety, while enabling the transmission of torque with absolutely zero backlash.
The Steel Ball Torque Limiter can be divided into some types, namely Design JTA-4.0 with clamping connection、Design JTA key connection、JTAL type steel ball torque limiter. The following are the structural diagrams and technical parameter tables of these products respectively.
|
JTA4.0 Model |
Torque Range (Nm) |
|
|
|
Max speed Unbalancedrpm |
Thrust unbalance (mm) |
Mass moments of inertia |
|
Clamping screws and tightening torques forΦd |
|
Weight (kg) |
|
|
X-shaped |
L-shaped |
M-shaped |
H-shaped |
|
|
Hub-side Kg㎡ |
Flexible-side Kg㎡ |
Size(mm) |
Torque(Nm) |
|
|
01 |
5-12.5 |
10-25 |
20-50 |
25-62.5 |
4000 |
1.2 |
0.000211 |
0.000093 |
4×M4 |
4 |
0.68 |
|
02 |
10-25 |
20-50 |
40-100 |
50-125 |
3000 |
1.5 |
0.000531 |
0.000234 |
6×M4 |
4 |
1.14 |
|
03 |
20-50 |
40-100 |
80-200 |
100-250 |
2500 |
1.8 |
0.001388 |
0.000643 |
8×M4 |
4 |
1.98 |
|
04 |
40-100 |
80-200 |
160-400 |
200-500 |
2000 |
2.0 |
0.002846 |
0.001306 |
8×M5 |
8 |
2.88 |
|
05 |
70-175 |
140-350 |
280-700 |
380-875 |
1200 |
2.2 |
0.006858 |
0.002649 |
8×M6 |
12 |
4.59 |
|
06 |
120-300 |
240-600 |
480-1200 |
600-1500 |
800 |
2.5 |
0.029432 |
0.006690 |
8×M8 |
15 |
10.63 |
|
JTA4.0 Model |
dmin |
dmax |
D |
F |
E (h6) |
K |
K1 |
L |
H |
A1 |
A2 |
A3 |
a |
b |
S |
SW |
|
01 |
10 |
20 |
70 |
38 |
47 |
65 |
56 |
47 |
40 |
12 |
7 |
8 |
5 |
6 |
8×M4 |
7 |
|
02 |
15 |
25 |
85 |
44 |
62 |
80 |
71 |
56 |
48 |
13.5 |
8 |
11 |
7 |
7 |
8×M5 |
7 |
|
03 |
22 |
35 |
100 |
56 |
75 |
95 |
85 |
67 |
59 |
16 |
9 |
14 |
9 |
9 |
8×M6 |
7 |
|
04 |
32 |
44 |
115 |
70 |
90 |
110 |
100 |
73 |
64 |
17 |
10 |
16 |
10 |
10 |
8×M6 |
8 |
|
05 |
35 |
55 |
135 |
84 |
100 |
130 |
116 |
86 |
75 |
20.5 |
12 |
18 |
10 |
12 |
8×M8 |
10 |
|
06 |
40 |
65 |
171 |
100 |
130 |
166 |
150 |
130 |
115 |
46 |
16 |
21 |
12 |
15 |
8×M10 |
13 |
|
Size/Type |
Torque Range(Nm) |
Finish bore(H8) |
Finish bore(H8)to JB/T7934-1999 |
|
JTA4.0-03 |
L |
1.further sizes for smaller and largetorques available on request；
2.smaller bores for low torques available on request；
3.H8 tolerance user-side H8.
|
JTA Model |
Torque Range (Nm) |
|
|
|
Max speed (rpm) |
Thrust unbalance (mm) |
Mass moments of inertia |
|
Clamping screws and tightening torques forΦd |
|
Weight (kg) |
|
|
X-shaped |
L-shaped |
M-shaped |
H-shaped |
|
|
Hub-side Kgm² |
Flexible-side Kgm² |
Size (mm) |
Torque (Nm) |
|
|
01 |
5-12.5 |
10-25 |
20-50 |
25-62.5 |
4000 |
1.2 |
0.000205 |
0.000093 |
4×M4 |
4 |
0.63 |
|
02 |
10-25 |
20-50 |
40-100 |
50-125 |
3000 |
1.5 |
0.000505 |
0.000234 |
6×M4 |
4 |
1.02 |
|
03 |
20-50 |
40-100 |
80-200 |
100-250 |
2500 |
1.8 |
0.001302 |
0.000643 |
8×M4 |
4 |
1.75 |
|
04 |
40-100 |
80-200 |
160-400 |
200-500 |
2000 |
2.0 |
0.002630 |
0.001306 |
8×M5 |
8 |
2.55 |
|
05 |
70-175 |
140-350 |
280-700 |
380-875 |
1200 |
2.2 |
0.006329 |
0.002649 |
8×M6 |
12 |
4.07 |
|
06 |
120-300 |
240-600 |
480-1200 |
600-1500 |
800 |
2.5 |
0.028443 |
0.006690 |
8×M8 |
15 |
10.06 |
|
JTA Model |
d |
D |
E (h6) |
K |
K1 |
H |
A2 |
A3 |
a |
b |
S |
|
01 |
12-20 |
70 |
47 |
65 |
56 |
40 |
7 |
8 |
5 |
6 |
8×M4 |
|
02 |
15-22 |
85 |
62 |
80 |
71 |
48 |
8 |
11 |
7 |
7 |
8×M5 |
|
03 |
22-30 |
100 |
75 |
95 |
85 |
59 |
9 |
14 |
9 |
9 |
8×M6 |
|
04 |
28-40 |
115 |
90 |
110 |
100 |
64 |
10 |
16 |
10 |
10 |
8×M6 |
|
05 |
32-50 |
135 |
100 |
130 |
116 |
75 |
12 |
18 |
10 |
12 |
8×M8 |
|
06 |
40-65 |
166 |
130 |
171 |
150 |
115 |
16 |
21 |
12 |
15 |
8×M10 |
1.further sizes for smaller and largetorques available on request；
2.smaller bores for low torques available on request；
3.tolerance user-side H7.
|
Size/type |
Torque Range (Nm) |
Finish bore (H7) |
Finished hole diameter (H7) Keyway in accordance with GB/T3852-1997 (JS9) standard |
|
JTA03 |
L |
Φ22 |
Φ22key way |
|
JTAL |
Torque Range (Nm) - X |
Torque Range (Nm) - L |
Torque Range (Nm) - M |
Max.speed unbalanced rpm |
Thrust washer stroke on overload mm |
|
01 |
5-12.5 |
10-25 |
20-50 |
4000 |
1.2 |
|
02 |
10-25 |
20-50 |
40-100 |
3000 |
1.5 |
|
03 |
20-50 |
40-100 |
80-200 |
2500 |
1.8 |
|
04 |
40-100 |
80-200 |
160-400 |
2000 |
2.0 |
|
05 |
70-175 |
140-350 |
280-700 |
1200 |
2.2 |
|
06 |
120-300 |
240-600 |
480-1200 |
800 |
2.5 |
|
JTAL |
Φd1 |
Φd2 |
Φd3 |
Φd4 |
Dₐ |
DH |
D |
LG1 |
LG2 |
L₁ |
L₂ |
|
01 |
15-28 |
10-20 |
8-28 |
10-20 |
70 |
55 |
70 |
102 |
95 |
30 |
47 |
|
02 |
19-35 |
15-25 |
10-38 |
15-25 |
85 |
65 |
85 |
120 |
112 |
35 |
57 |
|
03 |
20-45 |
20-35 |
12-45 |
20-30 |
100 |
80 |
100 |
146 |
138 |
45 |
69 |
|
04 |
28-45 |
30-45 |
14-55 |
30-40 |
115 |
95 |
115 |
159 |
150 |
50 |
74 |
|
05 |
35-55 |
35-55 |
20-60 |
35-50 |
135 |
105 |
135 |
182 |
171 |
56 |
87 |
|
06 |
45-80 |
40-65 |
35-80 |
40-65 |
175 |
135 |
171 |
255 |
240 |
75 |
130 |
|
JTAL03 |
L |
Φ20 |
Φ 20 |
Φ20keyway/ Φ 20-4.0 Φ 20-4.0 claping |
|
Size/type of joint |
Torque Range (Nm) |
Finish bore (H7) |
Finish bore (H7) |
Finish bore (H7) Keyway to GB/T3852 sheet 1997 (Js9) |
Address
No. 1068 Jinyang East Road, Lujia Town, Kunshan City, Jiangsu Province, China
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If you have any enquiry about quotation or cooperation, please feel free to email us at jiteng2009@126.com or use the following inquiry form.Our sales representative will contact you within 24 hours. Thank you for your interest in our products.
