Ultra Thin Spring Brake

Ultra Thin Spring-Engaged Power-Off Brakes

UTSEB Series(Must be used with PWM Controller)

Ultra Thin Spring Brake

1.02 to 3.29” 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

Available Downloads

Resources

Questions? (607) 732-2030

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 3D	Model: UTSEB - 114 3D	Model: UTSEB - 154 3D	Model: UTSEB - 189 3D	Model: UTSEB - 221 3D	Model: UTSEB - 268	Model: UTSEB - 280 3D	Model: UTSEB - 328 3D	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.