Ultra Thin Spring Brake

UTSEB Series

Ultra Thin Spring Brake

  • 1.02 to 2.80” diameter ; 0.47 to 0.75” length
  • Bore sizes from 0.19 to 0.79”
  • Static torque from 0.53 to 28.32 lb-in
  • 24VDC coil voltage for 0.5 sec max; 7VDC holding voltage with PWM controller
  • Modified designs and customized assemblies available
Performance / Mechanical Specifications UTSEB Series — Model Size
UTSEB - 102 UTSEB - 114 UTSEB - 154 UTSEB - 189 UTSEB - 221 UTSEB - 268 UTSEB - 280 UTSEB - 328
STP File Model
Model: UTSEB - 102
Model: UTSEB - 114
Model: UTSEB - 154
Model: UTSEB - 189
Model: UTSEB - 221
Model: UTSEB - 268
Model: UTSEB - 280
Model: UTSEB - 328
Model:
Torque Rating (Static) lb-in
Model: UTSEB - 102
0.53
Model: UTSEB - 114
1.42
Model: UTSEB - 154
2.83
Model: UTSEB - 189
5.49
Model: UTSEB - 221
11.68
Model: UTSEB - 268
22.13
Model: UTSEB - 280
28.32
Model: UTSEB - 328
44.25
Model:
(Nm)
Model: UTSEB - 102
0.06
Model: UTSEB - 114
0.16
Model: UTSEB - 154
0.32
Model: UTSEB - 189
0.62
Model: UTSEB - 221
1.32
Model: UTSEB - 268
2.50
Model: UTSEB - 280
3.20
Model: UTSEB - 328
5.00
Model:
Recommended Max Speed rpm
Model: UTSEB - 102
5000
Model: UTSEB - 114
5000
Model: UTSEB - 154
5000
Model: UTSEB - 189
5000
Model: UTSEB - 221
5000
Model: UTSEB - 268
5000
Model: UTSEB - 280
5000
Model: UTSEB - 328
5000
Model:
Body Diameter in
Model: UTSEB - 102
1.02
Model: UTSEB - 114
1.54
Model: UTSEB - 154
1.54
Model: UTSEB - 189
1.89
Model: UTSEB - 221
2.20
Model: UTSEB - 268
2.68
Model: UTSEB - 280
2.80
Model: UTSEB - 328
3.29
Model:
(mm)
Model: UTSEB - 102
(26.0)
Model: UTSEB - 114
(29.0)
Model: UTSEB - 154
(39.0)
Model: UTSEB - 189
(48.0)
Model: UTSEB - 221
(56.0)
Model: UTSEB - 268
(68.0)
Model: UTSEB - 280
(71.0)
Model: UTSEB - 328
(83.5)
Model:
Overall Length (ref) in
Model: UTSEB - 102
0.49
Model: UTSEB - 114
0.47
Model: UTSEB - 154
0.55
Model: UTSEB - 189
0.55
Model: UTSEB - 221
0.57
Model: UTSEB - 268
0.67
Model: UTSEB - 280
0.75
Model: UTSEB - 328
0.84
Model:
(mm)
Model: UTSEB - 102
(12.6)
Model: UTSEB - 114
(12.0)
Model: UTSEB - 154
(14.0)
Model: UTSEB - 189
(14.0)
Model: UTSEB - 221
(14.5)
Model: UTSEB - 268
(17.0)
Model: UTSEB - 280
(19.0)
Model: UTSEB - 328
(21.3)
Model:
Pilot Diameter in
Model: UTSEB - 102
0.28
Model: UTSEB - 114
0.35
Model: UTSEB - 154
0.35
Model: UTSEB - 189
0.59
Model: UTSEB - 221
0.59
Model: UTSEB - 268
0.79
Model: UTSEB - 280
0.87
Model: UTSEB - 328
1.85
Model:
(mm)
Model: UTSEB - 102
(7.0)
Model: UTSEB - 114
(9.0)
Model: UTSEB - 154
(9.0)
Model: UTSEB - 189
(9.0)
Model: UTSEB - 221
(15.0)
Model: UTSEB - 268
(20.0)
Model: UTSEB - 280
(22.0)
Model: UTSEB - 328
(47.0)
Model:
Hub Bore Diameter in
Model: UTSEB - 102
0.197
Model: UTSEB - 114
0.315
Model: UTSEB - 154
0.315
Model: UTSEB - 189
0.551
Model: UTSEB - 221
0.551
Model: UTSEB - 268
0.748
Model: UTSEB - 280
0.790
Model: UTSEB - 328
0.748
Model:
(mm)
Model: UTSEB - 102
(5.00)
Model: UTSEB - 114
(8.00)
Model: UTSEB - 154
(8.00)
Model: UTSEB - 189
(14.00)
Model: UTSEB - 221
(14.00)
Model: UTSEB - 268
(19.00)
Model: UTSEB - 280
(20.00)
Model: UTSEB - 328
(19.00)
Model:

UTSEB Operation:

The magnet body is attached to the rear of the motor or bulkhead, and the hub is attached to the shaft with two set screws. When the coil is energized, the electromagnetic field attracts the armature plate and compresses the springs. This allows the friction plate to rotate freely with the hub and shaft.

Once energized with 24 VDC, the PWM controller will provide the 7VDC to hold the brake in the release position.
When power is turned off, the electromagnetic field dissipates, allowing the springs to push the armature plate into contact with the friction disk. This squeezes the friction disk between the pressure plate and the armature plate, thus transmitting torque, and stopping/holding the friction disc, hub, and shaft.