SBS series : Clutch Brakes : Non-excitation Electromagnetic Brakes(Spring Closed Type): SINFONIA TECHNOLOGY CO., LTD.

A comprehensive line of clutches and brakes

Spring Closed Type

For braking

Features

Operates immediately at power off.
There is no need to adjust gap when mounted.
Superior braking durability and maintain stable braking force.
Realized small size with high torque by multi-plate structure.
Static friction torque could be adjustable by changing number of disc.

Indication of type

SBS-140-4D:Model symbol-Nominal number-Number of disks

Torque / Rated voltage

Type SBS-	120		140		170		230		300
Type SBS-	4D	8D	4D	8D	4D	8D	4D	8D	4D	8D
Static friction torque Nm	15	30	30	60	60	120	260	500	800	1500
Rated voltage DC-V	24

Structure

fig

Characteristics

Response Characteristics

Model/ SBS-	120		140		170		230		300
Model/ SBS-	4D	8D	4D	8D	4D	8D	4D	8D	4D	8D
Armature pull-in time ta (ms)	200		300		400		600		900
Armature release time tar (ms)	150		200		200		250		300

Allowable workload / Max speed / Inertia J

Model	Allowable workload(J)			Max speed (r/min)		Inertia J (kgm²)
Model	per single time	per Minute	Limit for adjustment	at braking	at idling	Inertia J (kgm²)
SBS-120‒4D	3000	1400	8.50×10⁶	2000	4000	2.25×10^-4
SBS-120‒8D	5000	1400	8.50×10⁶	2000	2000	4.00×10^-4
SBS-140‒4D	4000	2000	1.10×10⁷	1800	3600	8.75×10^-4
SBS-140‒8D	8000	2000	1.10×10⁷	1800	1800	1.35×10^-3
SBS-170‒4D	6000	3000	1.70×10⁷	1800	3000	2.80×10^-3
SBS-170‒8D	14000	3000	1.70×10⁷	1800	1800	3.50×10^-3
SBS-230‒4D	12000	6000	4.80×10⁷	1500	2200	0.0120
SBS-230‒8D	26000	6000	4.80×10⁷	1500	1500	0.0156
SBS-300‒4D	15000	10000	7.90×10⁷	1200	1600	0.0843
SBS-300‒8D	45000	10000	7.90×10⁷	1200	1200	0.114

Installation Example

fig

Model list